Pit¢@R'N E-235 VOL. 29 TRANSMISSION SYSTEM EXPANSION PROJECT NO.9 ( 41994 - 1998 ) VOLUME I DETAILED ECONOMIC ANALYSIS ELECTRICITY GENERATING AUTHORITY OF THAILAND REPORT NO. 21200-3809 SYSTEM PIANNING DEPARTMENT MARCH1995 Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized
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Pit¢@R'N
E-235 VOL. 29
TRANSMISSION SYSTEM
EXPANSION PROJECT NO.9
( 41994 - 1998 )
VOLUME I DETAILED ECONOMIC ANALYSIS
ELECTRICITY GENERATING AUTHORITY OF THAILAND
REPORT NO. 21200-3809 SYSTEM PIANNING DEPARTMENT
MARCH 1995
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TRANSMISSION SYSTEM EXPANSION PROJECT NO.9
(1994-1998)
VOLUME II DETAILED ECONOMIC ANALYSIS
REPORT NO. 21200-3809
MARCH 1995
Prepared By Concurred By
Transmission System Planning DivisionemPlanino_(Prakob Dhienhirunya)
Chief, Transmission System Director, System Planning Department
Planning Division
ABBREVIATIONS
ACSR - Aluminum Conductor Steel Reinforced
cct-klm - Circuit-Kilometer
DC/ST - Double Circuit/Steel Tower
DEDP - Department of Energy Development and Promotion
DR. - Discount Rate
EDR. - Equalized Discount Rate
EGAT - Electricity Generating Authority of Thailand
FBC - Fluidized Bed Combustion
F.C. - Foreign Currency
IDC - Interest During Construction
L.C. - Local Currency
MTHB - Million Baht
MEA - Metropolitan Electricity Authority
MCM - Thousand Circular Mils
MVA - Megavolt-ampare
MVAr - Megavolt-ampere Reactive
MW - Megawatt
NEPC - National Energy Policy Council
NEPO - National Energy Policy Office
NESDB - National Economic and Social Development Board
NESDP - National Economic and Social Development Plan
NIDA - National Institute of Development Administration
PDP - Power Development Plan
PEA - Provincial Electricity Authority
P.V. - Present Value
TDRI - Thailand Development Research Institute
THB - Baht
USD - US Dollar
VAT - Value Added Tax
W/O - Without
TABLE OF CONTENTS
Page
1. INTRODUCTION I
2. SUMMARY AND RECOMMENDATION 2
3. CRITERIA AND ASSUMPTIONS FOR ECONOMIC ANALYSIS
OF SUBPROJECTS 7
4. DETAILED ECONOMIC ANALYSIS OF EACH SUBPROJECT 11
5T FNANCTAT. TJTIFICATION OF TS-9 PROJECT BASED ON
TIME SLICE APPROACH 139
APPENDIXES
1. Load Flow Diagrams of the Proposed Plan of each Subproject 147
2. Full Name and Abbreviation ot Substation 217
tKOGRIVEn
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i. INTRODUCT
Report Volume II (Detailed Economic Analysis) presents details of the
economic and financial justifications of the Transmission System Expansion ProjectNo.9 (TS.9). The project comprises 24 subprojects for transmission line and substationexpansion and reinforcement, addition of new transformers, reactive power supply andmiscellaneous equipments including related communication system. The scope and
purpose of each subproject are described in Volume I (Main Report).
The economic justification of each subproject is performed based on theleast cost solution. Each proposed subproject is the least cost alternative among other
alternatives which serve the same objectives.
Since TS.9 Project is an integral part of EGAT's overall development
program, the economic justification of the whole project package in terms of economicand financial internal rate of return (EIRR and FIRR) has been therefore evaluated based
on the time-slice study of EGAT'is overall llower Development Plan (PDP) for the
period covered by the Project.
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2. SUMMARY AND RECOMMENDATION
2.1 Economic Analysis of each subproject is evaluated based on the least cost
solution. The proposed subproject is selected from at least three other possible
altematives which can satisfy the same objiectives. The -resent value of te t0o Cost
of each possible alternative which include investment cost, operation and maintenance
cost and the cost of system losses of each alternative, is calculated and compared.
System losses of each subproject and its alternatives are obtained from the power flow
studies of the whole EGAT's power system. The economic viability of each subproject
is presented in terms of the Net Present Value (NPV) and benefit/cost ratio (B/C ratio)
at 10 % discount rate and equalized discount Rate (EDR).
2.2 Results of economic analysis w\hich has indicated that all proposedsu'bprojects in TS.9 Project are the least cost alternative, are summarized in Table 2.1.
2.3 The four years time slice study oflGA(iT'l's overall Power Development Plan
(PDP) 1995-1998 is performed to represent the economic and financial rate of return
(EIRR and FIRR) of the whole package of TS.9 project. The result ol the study shows
the EIRR and FIRR of the Project is 11 .77 and 4.51 percent respectively.
2.4 It can be concluded from the analyses that the TS.9 Project is the least cost
solution for EGAT's power system reinforcement and expansion in each subproject area
and the whole package of TS.9 project for the period of 1995-1998 is also economically
viable.
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Table 2.1 Summary Result of Economic Analysis in TS. 9
No. Fiscal Description Net P.V. R/r EquelizedYear @10 %DR.1 Ratio Discount
__(MTHB) Rate
CENTRAL REGION
1. 230/115 KV BAN PONG 2 - BAN PONG I - NAKHON CHAISI - SAM PHRAN 2 LINES AND SUBSTATIONSa. 1998 - Reconstruction ot115kV Ban Pong 2-Ban Pong 1-Nakhon Chalsl-Samn Phran 2to
- Construction of 230 kV Ban Pong 2-Sal Noi DC/ST 1,272 MCM ACSR, 53.6 km- Reconstruction ot 230 kV Ratchaburi 2-Ban Pon 2 to DC/ST 2x1272 MCM ACSR, 41.7 km - --- Base Ca se
b. 1998 -Reconstructionot115kVBanPong2-(BanPongl)-NakhonCharsito 230kVDC/ST
2006 - Construction of 230 kV Ban Pong 2 - Sai Noi DC/ST 1.272 MCM ACSR. 53.6 km- Reconstruction o 230 kV Ratchaburi 2-Ban Pon 2 to DC/ST 2xt 272 MCM ACSR, 41.7 km 88.56 1.0026 N.A.
C. 1998 - Construction of 230 kV Sai Noi-Nakhon Chaisi DC/ST 2x1.272 MCM ACSR. 35 km and-Reconstnjctlono 115kV NakhonChaisi-Samphran2 to 1151230 kV DC/ST 2x1.272 MOM ACSR. Skm-Installation of 230/115 kV 2x200 MVA Transformer at Nakhon Chaisi Suostation
1999 - Construction of 230kV Ban Pong 2-Sal Nol DC/ST 1,272 MCM ACSR, 53.6 km2006 - Reconstruction ot 230 kV Ratchaburi 2 -Ban Pong 2 to DC/ST 2x2 272 MCM ACSR, 41.7 km
a. 1997 - Construction ot tISkV Bo Win-Ban Bung DC/ST 2x795 MOM ACSR. 27 kmn2001 - Installation ot230/115 kV 1x200 MVA Transformer at Bo Win Substation -Bae Case
b. 1997 - Reconstruction of 11 SkV Ao Phai-Si Racha-Ban Bung to Ao Phal-Ban Bung DC/ST 2x795 MCM ACSR,
38 km with detour line Si Racha-Ban Bung 33 km2004 - Installation ot 230/115kV 1 x200 MVA Transtormer at Bo Win Substation
-Installatbon ot 230/115 kV 1 x200 MVA Transtormer at Ao Phai Substation 90.02 1.0036 > 150.0c, 1997 - Construction of 230 kV Bo Win-Ban Bung DC/ST 1,272 MCM ACSR, 27 km
- lnstallaton of 230/115 kV 2x200 MVA transtormer at Ban BtSng Substation___ 2004 - Installation of 230/1 1 5 kV i x200 MVA Transtormer at Bo Win Substation 243.37 1.0096 >150.0%
3. 115 KVTHAWUNG SUBSTATION AND LINES CONNECTIONa. 1898 -Construction ot The Wung Switching Substation at intersection point of 11SkV
Lop Buril -Sing Burl and Ang Thong 2-Lop Bun 2 line.- Installation of 1 x200 MVA Transformer at Ang Thong I Substation
2002 - Construction of 115 kV Tha Wung-Lop Burl 1 SC on DC/ST. 795 MCM ACSR, 13 kmBase Case …b. 1998 -Reconstruction ot115 kV Ang Thong 1-Sing Burto be DC/ST 2x795 MOM ACS, 234km
- Installation of 1 x200 MVA Transformer at Ang Thong I Substation- Installation o0 44.08 and 22.04 MVAr Capacitor Bank at Sing Burn and Lop Buri I Substation respectrtely.
2002 -Construction ot15WkV Sing Burl-Lop Buri 1 SC on DC/ST, 795 MCM ACSR, 27 km 20.76 1.0001 N.A.c. 1 998 - Tenmination of one cctot 230 kV Tha Tako-Ang Thong 1 to Sing Buri
-Installation of 1x200 MVA Transtormer at Sing Buri Substation2002 -Construction o115kV Sing Buri-Lop Buri SCon DC/ST. 795 MCM ACSR, 27 km2006 -Installation ot 1x200 MVA Transformer atAng Thong 1 Substation 3_ 32.30 1.0016 | N.A.
d. 1998 -TerminationofonecCtof23okVThaTako-Thalan3anc tl5kV SngBuri- LopBur 1 toThaWung- Installation of 1x200 MVA Transformer at Tha Wung
2002 - Construction of 115 kV Tha Wung - Lop Burn I SC on DC/ST. 795 MCM ACSR. 13 km2003 -Installation o12x200 MvATranstormer at AnRThong)l Srstato-__-| 44.866 1.0022 N.A.
4. 115 KV THALAN 3 - SARABURI 1 LINE AND SUBSTATIONSa. t998 -Reconstruction of I 15 kV Thalan 1 -Saraburi I to Thalan 3-Saraburi I DC/ST 795 MCM ACSR.
I1t5 km (with detour line) and 115 kV Thalan I-Thalan 3 SC on DC/ST79S5 MCM ACSR, 5 km … - -_--Base Case-----b. t998 -Reconstruction ot I1 t kV Thalan 1 -Saraburi I to DC/ST 795 MCM ACSR.t8 km (with detour line) I
- Reconstruction oft Is kV Thalan 1 -Thalan 3 to DC/ST 795 MCM ACSR. 5km 10.03 1.0004| 31.36 %c. 1998 - ConStrUctionof IIskVThalan3-Saraouri I SConDC/ST795MCMACSR. 14kmank d an
- Terminaton of 115 kV Thalan I -Saraburi I to Thalan 3 and- Reconstruction of I 15 kV Thalan 1 -Thalan 3 to SC on DC/ST 795 MCM ACSR,5 krn
__ 2003 --Strlnging2rtdcctof115kVThalan3-Saraburi t 795MCMACSR, 14km 10.97 1.0004 | 25.28 %5. 115:kV RATCHASURI 2 - PHETCHABURI UNE AND SUBSATIONS
a. 1998 - Reconstruction of 115 kV Ratchaburi 2-Phetchaburl to DC/ST ix795 MCM ACSR, 53 km| - Installation of 6.04 and 12.08 MVAr Capecitor Bank at Cha-Am and Phetchaburi Substation respectively. … Base Case …
b. 1998 - Teminiation of 2nd Cet ot 230 kV Ratchaburl 2-Prachuap Khiri Khan line to Hua Hin 1,272 MCM ACSR. 10 kl2006 - Construction of 115 kV Ratchaburi 2-Phetchaburi SC on DC/ST 2x795 MCM ACSR, 53 km 12.09 1.0005 12.77 %
Table 2.1 Summary Result of Economic Analysis in TS. 9_ _LCPN~T1NUED) ________
No. Fiscal |Description Net P.V. B/C EquaiizedYear @10 %DR. Ratio Discount
(MTHB) Rate
CENTRAL REGION (CONTINUED)
S. 115 KV PRACHINBUFRi 2- WATTHANA NAKHON LINE AND SUBSTATIONS
a. 1998 - Construction of I 15 kV Prachin Burl 2-Watthana Nakhon SC on DC/ST 2k795 MBCM ACSR, i7 kn - … Base Case …-. *ooe Co,-trtio.. 9. 230;11S kVP,,;ri Bu,, 2r-rrN_ihana Nagirron Sr_ on jCisi 1.272 MOM AcSR. 87 km _lUtt.UU 1 .UU3U >1150. *! c. 1998 -Construction ot 230 kV Prachi/ni Bu 2-WatthaniaNakghonl SC on DCIST 1.272 MCM ACSR. 07 km
--Instailaton o/230/115 kV1Ix209MVA Trsnslormer at WattiaNathon Substation. 322.14 1.0173 >150.0%NORTHEASTERN REGION
7. 230/115 KV MUKDAHAN 2 SUBSTATION AND 115 KV MUKDAHAN 2 - THAT PHANOM - NAKHON PHANOM
UNES. AND SLEBsTATONS
a. 1998 - Construction of Mukdahan 2 Substation and
- Temirnation oa one cct of 230 kV Savannakhet - Rol Et to Mukdahan 2 SubstatiOn
- tnstailation of 230/115 kV 2x200 MVA Transformers at Mukdahan 2 Substation
- Constnuction of 115 KV Mukdahan 2 - That Phanom DC/ST 795 MCM ACSR S8 km
- Construction of 115 kV That Phanon - Nakhon Phanom SC on DCIST 795 MCM ACSR 59 km
2003 -IInstailaton ot 230/115 kV 1x200 MVA Transformer at Rog Et Substation
2005 - Stringin 2nd cct of t t5 kV That Phanom - Nakrion Phanom 795 MCM ACSR 59 km _ Base Ca se …b. 1 998 - Construction ot NaLkhon Phanom 2 Sutstation and
- Terninaton of onre ct of 230 kV Thakhek - Sakon Nakhon 2 to Nakhon Phanom 2 Substation
- instailalton ot 230/115 kV 2x200 MVA Transformers at Nakhon Phanom 2 Sutbstation
- Construct/on of 115 kV Nakhon Phanom I -That Phanom DC/ST 795 MCM ACSR. 59 km
- Constructionof 1i5kVThatPhanom-Mukdalian SC on DC/ST 795 MCM ACSR., 45km
2001 -InstallatIon of 230/115 kV 1 x200 MVA Transformer at Roi El Substation
2004 -Stringing 2nd cct of 115 kV That Phanom - Mukdahan 795 MCM ACSR 45 km 367.72 1.0230>1c. 1998 - Construction alt I 5 kV Sakon Nakhon - That Phanom DC/ST 795 MCM ACSR 70 km
- Construction of 115 kV That Phanom - Nakhon Phanom SC on DC/ST 795 MCM ACSR 59 km
- Consttnction of 115 kV That Phanom - Mukdahan SC on DC/ST 795 MCM ACSR, 45 km
2001 - Installaton of 230/115 kV 1 x200 MVA Transformer at Roi Et Substation
2004 - Stringing 2nd cct 01115 kV That Phanom - Mukdahan 795 MCM ACSR. 45 km
2005 - Stnnging 2nd cct of I I5 kV That Phanom - Nakhon Phanom 795 MGM A9SR. 59 km 263.81 1.0165 31.53%d. 1998 - Construction o t115 kV Sakon Nakhon - Tnat Phanom DC/ST 795 MCM ACSR 70 km
- Construction of 115 kV That Phanom - Nakhon Phanom SC on DC/ST 795 MCM ACSR 59 km
- ConstrUction o0 115 kV Phon Thong - Mukdanlan SC on DC/ST 795 MCM ACSR, 90 km
2005 -Stringing2ndoctotl115kVThatPhanom-NakhorinPnamm 795MOM.ACSR, 59km 281.971 1.0177 145.89% 18. t t15iV UDON 2 - NONG BUA LAM PHU UNE AND SUBSTATIONS
a. 1998 - Construction of 115kV Udon Thani 2 - Nong Bua Lam Phu SC on DC/ST 795 MCM ACSR, G1 km
2001 - Construction ot 115 kV Nong Bua Lam Phu - Loeg SC on DC/ST 795 MCM ACSR, 79 km
2005 - Stringing 2nd cct of115 kV Udon Thani 2 - NongBua Lam Phu 795 MCMACSR, 81 km ------…Base Case--…--b. 1 8 - Construction of 11 SkV Udon Than 2 - Nong Bua Lam Phu DC/ST 795 MCM AC SR. 61 km
2001 - ConstructionofIl5kVNongBuaLamPhu- Leai SConDCIST 79sMCMACSR, 79kmrn 6.04 1.0004| N.A. c. 1998 - Construction ot 230/115 kV Udon Than, 2 - Nong Bua Lam Phu DC/ST 1,272 MCM ACSR, 8I km
2001 -Construction of 115 kV Nong Bua Lam Phu- Loei SO on DC/ST 795 MCM ACSR, 79 km 63.02 1.0040 >150.0%19. 15 KV ROI ET- PHAYAKKHAPHUM PHISAI - SURIN UNES AND SLBSTATIONS
a. 1998 -Stringing 2nd ot 115 kVRoi Et-Phayakkhaphum Phisai 795 MCM ACSR, 84km and
- ConstructIon of 1115 kV Phayakkhaphum Phisai - Surin SC on DC/ST 795 MCM ACSR 80 km i
2003 - Stringing 2nd cot 0/1115 kV Phayakkhaphum Phisai - Surin 795 MCM ACSR 80 km ------ Base Case … =_--b. 1998 - Construction o0 115 kV Si Sa Ket - Surin SC on DC/ST 795 MCM ACSR 951km k -
- Stringing 2nd of 115 kV Roi Et - Phayakkhaphum Phisai 795 MCM AC SR 84 km
2003 - Stringing 2nd cct o 115kV Si Sa Ket - Surin 75 MCM ACSR 95km _ 67.15 [ 1.0041 58.57 %c. 1998 - Construction of 115 kV Burram - Surin SC on DC/ST 795 MCM ACSR 47 km
a. 1998 -ConstructIon of 115 kV Chaeyaphum - Bamnet Narong SC on DC/ST 795 MCM ACSR 58 km
- Installaeono/ 115-22-11 kV2xS0MVA Transformer at Bamnet Narong Substatlon. B------Base Case-----b. 1998 -Constructionotf 15kVNakhonFRatchasgma2 - Bamnet Narong SC on DC/ST 795 MCM ACSR 85km K
| |_______ - Installation of 115-22-11 kV 2xS0 MVA Transformer at Bamnet Naron Substatlon 1 65.38| 1.00901 >150.0%||c. 1998 i-Installation o0 Gas Turbine Powa Plants at Bamnet Narong 1_ 1,009.561 1.0458 62.81 %;I
21-Mar-9504109 PM
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Table 2.1 Summary Result of Economic Analysis in TS. 9
N. Fiscal DeIr jin Iin Not P.V /RC I EaualizedYear , @10 -DR.I Ratio Discount
(MTHB) Rate
NORTHEASTERN REGION (CONTINUED) I
11. 115 KY UBON RATCHATHANI 2 - KANTHARALAK LINE AND SUBSTATIONS
a. 1998 -Construction of 11 SkV Ubon Ratchathani 2 - Kantharalak SC on DC/ST 795 MCM ACSR 55 km
-Installaton of 115-22-11 kV2x50 MVA Transformer at KamtharalakSubstation_. Base Case …-----b. 1998 -Construction of 11 5kV SI Sa Ket - Kantharalak SC on DC/ST 795 MCM ACSR 65 km
_ -Installaton ot1 15-22-11 kV 2xs0 MVA Transformerat Kantharalak Substation. 27.22 1.0018 >150.0 %_ c. 1998 _ Installaton ot Gas Turbine Power Plants at Kantharelak 449.55 1.02941 83.90 _
12. 115 KV SURIN - SANGKHA LINE AND SUBSTATIONSa. 1998 - Construction of 1 15 kV Surin - Sangkha SC on DC/ST 795 MCM ACSR 49 km
- Installationo '115-22-11 kV2xs5oMVATransrormeratSangqha uLbstation. -_____- Base Cas e …--__b. 1998 -Construction o1 115 kV Si Sa Ket - Sangkha SC on DC/ST 795 MCM ACSR 74 km
- Installatton o 115-22-11 kV 2x5oMVA Transo as n. 92.40 1.0061 >150.0 %c. 1998 -Constrnction of22 kV Surin - Sangkha 2xDC with AVR 185 sq.mm. AAC 66 km and
- Installabon of 115-22-11 kV 2xS oMVA Transformer at Sangkha Substation._ 2000 -Construction f 115 kV Surin-Sha _SC_ojn DC/ST 795 MCM ACSR 49 km 42.95 1.0028 30.63 S
SOUTHERN REGION13. 230:KV NAKHON Si THAMARAT - THUNG SONG - SURAT THANI LINES AND SUBSTATIONS
a. 1998 - Reconstruction of 115 kV Nakhon Si Thammarat - Thung Song to230/1 15 kV DC/ST 1272 MCM ACSR, 54 km
- Reconstruction of 15s kV Surat Thani-Thung Song to 230 kV DC/ST 2xr1272 MCM ACSR. 122 km- Installation of 2x200 MVA Transformers at Thung Song Substation.
2003 - Conversion o1 115/230 kV Nakhon Si Thammarat - Thung Bon ire to energized at 230 kV B-----Base Case-b. 1995 - Reconstruction of 115 kV Nakhon Si Thammarat - Thung Song to 230 kV DC/ST 1,272 MCM ACSR. 54 m
- Construction of 230 kV Surat Thani - Nakhon Si Thammara DC/ST 2x1272 MCM ACSR 145 km- Installabon of 2x200 MVA Transformers at Thung Song Substation.
2006 --insfallationof xlooMvATransformerat suraf Than; Substation ___ 569.14 1.0172 107.18 %c. 1998 - Reconstruction of 115kV Nakhon Si Thammarat - Thung Song to 230kV DC/ST 1,272 MCM ACSR, 54km
- Construction or230kV Khanom - Nakihon Si Thammarat DC/ST 2x1272 MCM ACSR 98 km- Installatonof2x200MVA Transformers at Thu.o Sonm Sibrgati.n
2006 - Installatonof1x100MVATransformer-atSurat Thani-substatior _ 64.73 1.0020 32.62 jd. 1998 - Reconsttwetion of 115 kV Surat Thani-Thung Song to 230kV DC/ST 2x .272 MCM ACSR, 122 km
- Installabon of 2x200 MVA Transtormers at Thung So ng Substation.- Construction of new 230 kV Phattalung Substation and Termination of 230 kV
___________ Nakhon Si Thammarat-Fkhattalung and 230hV Thung Song-Khong Njae to Pnattlung Substation 91.47 > 150.0 94. 230 KV KHLONG NGAE - YALA LINES AND SUBSTATIONS
a. 1998 -Construction of 230kV Khlong Ngae-Yala DC/ST 1272 MCM ACSR. 120 km I I_-(using existing Hat Yai 2-Ye a PW)and installation of 2x0OOMVA Transformer at Yala Substation.… Base Case…-----
b. 1998 -Construction of 230/115 kV Khlong Ngae-Yala DC/ST 1272 MCM ACSR, 120 km(using existing HY2-YL ROW) and installation of t x200 MVA Transformer at Khlong Ngae
2006 - Conversion o1230/115 kV Khlong Ngae-YalaOC/ST 1272 MCM ACSR to be energiZed at 230kV __k _ 108.78 1.0053 41.25 %c. 1998 -Construction01230kVKflongNgae-Yala DC/ST 1272MCMACSR, 120km
(using new ROW) and Installaton of 2x200 MVA Transformer at Yala Substation. 251.45 1.0122 > 150.0 %5. 230/1 15 KV PHANGNGA - PHUKET JUNCTION - PHUKET 2 LINES AND SUBSTATIONS
a. 1998 -Construction of 230/t11 kVPhangnga-PhuketJunction (Future Phuket 3 Substation)DC/ST 1.272 MCM ACSR, 76 km Initially energized at 115 kV(using ROW of existing 115 kV Phangnga-Phuket Junction 150 sqmm AAAC line) and
- Construction of 1 15 kV Phuket Junction-Phuket 2 SC compact line, 2x795 MCM ACSR 12 km |and connect with one cot of new 230/115 kV Pnangnga-Phuket Junction line and
- Connection of existing 1 15 kV Phuket Junction-Phuket 2 with another cot Ofnew 230/1i5kV Phangnga-Phuket Junction line and
- Replacement of 2x1tOD MVA Transformer at R_atjp1a_ha Substation with 2x200 MVA B - -=-Base Case--…---b. 1995 - Sameas*a.-but use2x795MCMACSR conductor for ll5kVPhangnga-PhuketJunctionline 1
2002 - Construction of 115 kV Phuket 3 Substation at Phuket Junction and Terminate 2 cots of new 115kV I IPhangrnga-Phuket Junction and existing 1 15 kV Phangnga-Phuket t to Phuket 3 Substation andreconstruction of the existing 115 kV Phangnga -Phuket 1 from Phangnga to Phuket 3 to DC/ST2x795 MCM ACSR, 70km _ _ 108.56| 1 .0047 > 150.0 %S
c. 1998 - Construction o1230 kVPhuket 3 Substation at Phuket Junction and reconstrucson of existing 11 5kV iIFRailaprabha-Phangnga and Phangnga-Phuket Junction to 230kV Rallaprabha-Phuket 3 DC/ST I1,272 MCM ACSR, i49kmaniterminate2 cots of existing IlskVPhangnga-Phuktt I toPhuyket3
- Installation of 2x200 MVA transformer at Phuket 3 Substation2004 -Construction of 115 kV Phuket 2-Phuket Junction SC CoTpact line, 2x795 MCM ACSR 121km 1160.74 1.0069 N.A.
1:15 KV YALA -NARATHIWAT LINE AND SUBSTATIONSa. 1998 - Constructlon of 1 15 kV Yala - Narathiwat SC on DC/ST 795 MCM ACSR, 61 km B- - ase Case- - -- …b. 1998 |-Constructionof lskvPattani - Narathlwat SC onDC/ST 795 MCM ACSR, 80km 137.031.0081 _50.0_
C. 1998 -ConstrLctionofII5kVYala-Narathiwat DC/ST 795MCMACSR 61km 23.77 1.00141 >150.0 %I21-Mar-95
04:19 PM
Table 2.1 Summary Result of Economic Analysis in TS. 9________ ________ ________(C9NTNUED) _ __ _ _ _ _ _ _ _ _
No. Fiscal Description Net P.V. B/C EqualizecYear @10 %DR. Ratio Discount
(MTHB) RateSOUTHERN REGION (CONTINUED) I
17. 115 KV SURAT THANI - BAN DON UNE AND SUBSTATIONSa. 1998 |-Stringing 2ndcctOtI15kVSuratThani-BanDon477MCMACSR. 13.4km
- Reconstruction of 115 kV Surat Thnrs-Phunprhin to be SC on DC/ST 795 MCM ACSR, 6.2 km2003 - Stringing 2nod cot of 1 I5 kV Surat thani-Phunphin795 MCM ACSR 22.20 1.0012 >150.0 9
c . 1998 - Irstallabon ot Gas Turbine Power Plants at Ban Don Substation 5164.1 1 1.2760 >150.0 9NORTHERN REGION
18. CONVERSION OF MAE MOH 3- CHAING RAI FROM 115 KV TO 230 KVa. 1998 - Conversion of 230/115 kV Mae Moh 3-Chang Ral DC/ST 1.272 MCM ACSR,200 km
to energized at 230 kV-Instaliation of 2x200 MVA Transformer at Chiang Ral Substation
2006 - Installabon of 1 x200 MVA Transformer at Mae Moh 3 Substation ------ Base Case- - - - -b. 1998 - 115 kV Phayao - Chiang Rai SC on DC/ST 795 MCM ACSR,80 km
-Installabon of 1 x200 MVA Transtormer at Mae Moh3 Substation1999 - Addition of Capaotor Bank2001 - Conversion of 230/115 kV Mae Moh 3-Chiang Rai DC/ST 1.272 MCM ACSR,200 km to be energized at 230 26.1
-Installaton of 2x200 MVA Transformer at Chiang Ral Substation ___ _ 226.96 1.0130 >_150.0___C. 1998 - Tenmination oft I s kV Mae Moh 3 - Chiang Rai to Phayao 1,272 MCM ACSR. I km
-Installabon of 11 x200 MVA Transformer at Mae Moh 3 Substation1999 - Addition of Capackor Bank2001 - Conversion o' 230/11 5kV Mae Moh 3-Cheang Rai DC/ST 1.272 MCM ACSR.200 km to be energmed at 230k
- Installabon of 2x200 MVA Transformer at Chiang Rai Substation _ 61.591 1.0035 22.63 %19. 115 KV LAN KRABU - KAMPHAENG PHET LINE AND SUBSTATIONS
a. 1998 -Construction of 115kV Lan Krabu - Kamphaengphet DC/ST 795 MCM ACSR, 47 km2006 - Construction o I 15kV Bhumibol - Tak I SC on DC/ST 785 MCM ACSR, 47 km ------ Base Case- - - - -
b. 1998 - Terminaton o115 kV Tak 1 - Kamphaengphet to Tak 2 SC/ST 477 MCM ACSR, 3 km-Installaton of 2x200 MVA Transformer at Tak 2 Substation-Construction of I 15kV Bhumibol - Tak 1 SC on DC/ST 795 MCM ACSR, 47 km- Conrstruction of 11S kV Tak 2- Kamphaengphet SC on DC/ST 795 MCM ACSR. 53 km. 246.07! 1.0140 > 150.0 9W
c. 1998 - Terminarton of one cot of 230 kV Shumibol - Nakhorn Sawan lime to Kamphaengphet, 2 km- Installabon of 2x200 MVA Transformer at Kamphaengphet Substatlon
2006 - Terminatbon of 2nd cot of 230 kV Bhumibol - Nakhon Swan lIme to Kamphaengphat. 2 km 163.04 1.0093 >150.0920. 116 KV MAE MOH 3- LAMPANG 2 UNE AND SUBSTATIONS
a. 1998 - Construction of 115 kV Mae Moh 3- Lampang 2 DC/ST 2x795 MCM ACSR. 27 km (New R-O-W)- Termination of two cot of 115 kV Lamphun 2 - Mae Moh 2 line to Lampang 2
1999 - Installaton of 1x200 MVA Transformer at Chiang Mai 3 Substation2000 -Reconstructionof 115kV MaeMoh2-Lampang 1-Lamphun 1 tobe230kV Mae,Molh3-Saraphi
DC/ST 2x1,272 MCM ACSR. 124.4 km and 1 15 kV Mae Moh 3- Lampang 1 DC/ST 795 MCM ACSR. 41.4 knand 115 kV Lampang 2-Lamphun I DC/ST 785 MCM ACSR 16 1 km
-Terrninabon of 115 kV Lamphun 2 -Chiang Ma 2 line to Saraphl Substation DC/ST andReconstruebon of0115kV Lamphun 2-Saraphiltobe DC/ST 2x795 MCM ACSR. 10km
-installaton o121200 MVA Transformer at Saraphi Substation ------…Base Case- - - - -b. 1998 - Reconstnrction of 115kV Mae Moh 2-Lampang I-Lamphun ' tobe 230kV Mae Moh 3-Saraphi i
DC/ST 2x1,272 MCM ACSR, 124.4 km and 115 kV Mae Moh 3- Lampang I DC/ST 795 MCM ACSR,41.4 krand 115 kV Lamphun 2-Lamphun 1 DC/ST 795 MCM ACSR 16 1 km
- Terminaton of 1115 kV Lamphun 2-Chiang Mal 2 line to Saraphi Substation DC/ST andReconstnrction of 115 kV Lamphun 2 - Saraphi to be DC/ST 2x795 MCM ACSR. 10 km I
-rInstallation of 2x200 MVA Transformer at Saraphi Substation .2000 - Constnrction of 115 kV Mae Moh 3- Lampang 2 DC/ST 2x795 MCM ACSR. 27 km (New ROW) I I2006 - Installaton of 1 x200 MVA Transformer at Chiang Mal 3 Substation 53.20 1.00331 N.A
c. I1998 - Termtnabon of230 kV Mae Moh 3 - Chiang Mai 3 line and 115 kV Lampang 2- Lamphun 2 line to Hang Ch 0N- Installaton of 2x200 MVA Transformer at Hang Chat Substation
2000 - Reconstruction of 115 kV Mae Moh 2-Lampang I -I.amphun I to be 230 kV Mae Moh 3-SaraphiDC/ST 2x1.272 MCM ACSR, 124.4 km and 115 kV Mae Moh 3- Lampang I DC/ST 795 MCM ACSR.41 .4kando 115 kV Lamphun 2-Lamphun I DC/ST 795 MCM ACSR 1 6. 1 km I
- Termination o1115 kV Lamphun 2 -Chiang Ma 2 ine to Saraph1 Substation DC/ST andReconstruction o1 115 kV Lamphun 2 - Sarapht to be DC/ST 2x795 MCM ACSR, 10 km
- Installabon of 21200 MVA Transformer at Saraph, Substation2006 -Reconstruction of 115 kV Saraphi - Chiang Mai 2 line to be DC/ST 2x795 MCM ACSR, 16.1 km 267.08|1. >150.0 s
21. t115 KV CHIANG MAI 2- MAE TAENG LINE AND SUBSTATIONa. 1998 - Construction of 115 kV Chiang Mai 2- Mae Taeng SC on DC/ST 795 MCM ACSR. 42 km
- Installation of 2x50 MVA Transforner at Mae Taeng sustation. _ _ __ |------EBase Case- - - - -b. 1998 - Installation of Diesel Power Plants at Mae Taeng _ 573.501 1.03871 52.37%C. 1998 |-Installabon of Gas Turbine Power Plants at Ma.Taeng _T __ 612.56 1.0413l 110.56X
21 -M--604: 19 PI
-6-
3. i...t tLIiA ArN v A SSUP ivirTIONS r n r tJ1VIIC A'NALYSIS OF
SUBPROJECTS
3.1 Methodology of Analysis The economic analysis is made to find out the
least-cost program to serve the electricity demand in each project area. The
transmission system expansion program which includes the proposed subproject is
compared with the other two or three possible alternatives. The benefit/cost ratio (B/C
ratio), net present value (NPV) and equalized discount rate (EDR) are calculated to
indicate that the proposed subproject is included into the least-cost program. The
discount rate of 10 % is used to determine the least cost solution.
3.2 Alternative Transmission System Expansion Program Details of three or
four possible transmission system expansion alternatives to each subproject are
described in Section 4.
3.3 Capital Cost of Alternatives All capital costs are estimated based on 1994
price level. The cost without import duties and taxes, interest during construction
(IDC), and escalation are used in the study.
3.3.1 Transmission System The details of cost estimate of each proposed
subproject is shown in Volume I (Main Report). The cost estimate of transmission
system included in each alternative plan are based on 1994 constant price including
engineering, supervision and physical contingencies using the same unit price for each
subproject.
-7-
3.3.2 Distribution System 'lhe capital cost of the distribution system is
estimated based on the following unit price: -
22 kV 33 kV
a) Construction of distribution line
185 sq.mm.AAC conductor (MTHB/km)
- Single Circuit Structure 0.395 0.433
- Double Circuit Structure 0.777 0.859
- Single Circuit on D)ouble
Circuit Structure 0.424 0.469
- Stringing 2nd Circuit 0.394 0.436
b) Aerial Cable (MTHB/km/cct) 0.924 1.271
c) Automatic Voltage Regulator (AVR)
(MTHB/Set) 5.500 7.500
d) Switchgear (for I feeder) 2.000 2.000
e) Installation of one bank of
50 MVA Transformer at the
Terminal Substation 30.300 30.300
3.3.3 Diesel Power Plant The capital cost of 2.5 MW diesel power plant
used in the study is 20,600 THB/kW (USD. 792/kW).
3.3.4 Gas Turbine Power Plant The capital cost of 25 MW gas turbine
unit is estimated at 15,120 THB/kW (USSD. 582/kW).
-8-
3 4 Economic Life The economic lives of various project elements used in the
study are
Years
Transmission and Distribution Line 40
Substation and Equipment 25
Diesel Power Plant 15
Gas Turbine Power Plant 15
3.5 Operation and Maintenance Cost (O&M Cost) The O&M cost for various
types of project is assumed to be a fixed percentage of capital cost as follows
% of Capital Cost
Transmission Line 1.0
Distribution Line 1.0
Substation and Equipment 2.0
Diesel Power Plant 3.0
Gas Turbine Power lPlant 3.0
3.6 Capacity and Energy Cost of the 'T'ransmission and Distribution
Alternatives
Since the transmission and distribution system alternative do not produce
any generating capacity to the power system so when these alternatives are compared
with the installation of diesel or gas turbine power plant alternative, the cost of
producing power and energy to the system must be included in the cost of transmission
and distribution system alternative.
The Long Run Marginal Cost (LRMC) of EGAT's overall power
development plan is used to represent the cost of producing power and energy to the
system. The LRMC of capacity cost is calculated by using Average Incremental Cost
(AIC) concept, which is the ratio of discounted investment cost corresponding to
-9
EGAT's Power Development Plan during 1995-2004 to the discounted value of
incremental power of the same period. The LRMC of energy is calculated as a
weighted average, with the weights depending on the share of future energy generation
by the different types of power plant during the same period.
The capacity and energy cost based on EGAT's Power Development Plan
SUBPROJECT NO.1230/115 KV BAN PONG 2 - BAN PONG 1 - NAKHON CHAISI -
SAM PRAN 2 LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.1.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 19
- Reconstruction of the existing Ban Pong 2 - Ban Pong I - Nakhon Chaisi
- Sam Phran 2 from 115 kV double circuit line to 230 kV double circuit line, using2x1272 MCM ACSR conductor, a distance of approximately 43 km, initially energizedat 115 kV.
The economic cost is 583.2 MTIIB.
Year 2006
- Construction of 230 kV Ban Pong 2 - Sai Noi, double circuit line, using
1272 MCM ACSR conductor, a distance of approximately 53.6 km.
- Reconstruction of the existing 230 kV Ratchaburi 2 - Ban Pong 2 from
double circuit line using 1272 MCM ACSR conductor to double circuit line using2x1272 MCM ACSR conductor, a distance of approximately 42 km.
- Installation of lx200 MVA 230/115 kV transformer at Ban Pong 2
Substation.
The economic cost is 946.8 MTHB.
-12-
Alternative B:
Year 1998
- Reconstruction of the existing Ban Pong 2 - Ban Pong 1 - Nakhon Chaisi
- Sam Phran 2 from 115 kV double circuit line to 230 kV double circuit line using
2x1272 MCM ACSR conductor, a distance of approximately 43 km, the Nakhon Chaisi
- Sam Phran 2 line section will be initially energized at 115 kV.
- Installation of 3x200 MVA 230/115 kV transforners at Nakhon Chaisi
Substation.
The economic cost is 1,046.6 MTHB.
Year 2006
- Construction of 230 kV Ban Pong 2 - Sai Noi line, double circuit steel
tower, using lx1272 MCM ACSR conductor, a distance of approximately 54 km.
- Reconstruction of the existing 230 kV Ratchaburi 2 - Ban Pong 2 from
230 kV double circuit line using 1272 MCM ACSR conductor to double circuit line
using 2x1272 MCM ACSR conductor, a distance of approximately 42 km.
The economic cost is 852.4 MTHB.
Alternative C
Year 1998
- Construction of 230 kV Sai Noi - Nakhon Chaisi - Sam Phran 2 line,
double circuit steel tower, using 2x 1272 MCM ACSR conductor, a distance of
approximately 40 km, the Nakhon Chaisi - Sam Phran 2 line section will be initially
energized at 115 kV.
-13-
- Installation of 2x200 MVA 230/115 kV transformer at Nakhon ChaisiSubtation.
The econnom.ic cost is 9186 MAATHB
Year 1999
- Construction of 230 kV Ban Pong 2 - Sai Noi line, double circuit steeltower, using 1x1272 MCM ACSR conductor, a distance of approximately 54 km.
The economic cost is 463.9 MTHB.
Year 2006
* Reconstruction of the existing 230 kV Ratchaburi 2 - Ban Pong 2 from
double circuit line using 1272 MCM ACSR conductor to double circuit line using2x1272 MCM ACSR conductor, a distance of approximately 42 km.
- Installation of 1x200 MVA 230/115 kV transformers at Nakhon ChaisiSubstation.
The economic cost is 388.5 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 34,440.95
Alternative B 34,529.51
Alternative C 34,942.10
-14-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%_
Alternative A VS. Alternative B 88.56 1.0026 N.A.
Alternative A VS. Alternative C 501.16 1.0146 >150.00
Results of the analysis have led to the conclusion that the construction of
230/115 kV Ban Pong 2 - Ban Pong I - Nakhon Chaisi - Sampran 2 transmission
system project is the least cost alternative.
-15-
Table 4.1
Load Forecast for Ban Pong 1, Nakhon Chaisiand Sam Pran 2 Substations
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.3.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1997
- Construction of 115 kV Bo Win - Ban Bung line, double circuit steel
tower, using 2x795 MCM ACSR conductor. a distance of approximately 27 km.
The economic cost of the project is 206.8 MTHB.
Year 2001
- Installation of lx200 MVA 230/115 kV transformer at Bo Win
Substation.
The economic cost is 81.6 MTHB.
Alternative B
Year 1997
- Rolo the existing Ao Phai - Si Racha - Ban Bung iine from
115 kV single circuit line to 115 kV Ao Phai - Ban Bung double circuit line, using
2x795 MCM ACSR conductor, a distance of approximately 38 km.
-18-
The economic cost of the project is 277.6 MTHB.
Year 2004
- Installation of 1 x200 MVA 230/115 kV transformer at Bo Win
Substation.
- Installation of l x200 MVA 230/115 kV transformer at Ao Phai
Substation.
The economic cost is 189.0 MTHB.
Alternative C
Year 1997
- Construction of 230 kV Bo Win - Ban Bung line, double circuit steel
tower, using 1,272 MCM ACSR conductor, a distance of approximately 27 km.
- Installation of 2x200 MVA 230/115 kV transformer at Ban Bung
Substation.
The economic cost of the project is 531.7 MTHB.
Year 2004
- Installation of Ix200 MVA 230/115 kV transformer at Bo Win
Substation.
The economic cost is 81.9 MTHB.
-19-
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Econom..ic A.a;ivsis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 25,346.84
Alternative B 25,436.86
Alternative C 25,590.21
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 90.02 1.0036 >150.00
Alternative A VS. Alternative C 243.3.7 1.0096 >150.00
Results of the analysis have led to the conclusion that the construction of115 kV Bo Win - Ban Bung transmission system project is the least cost alternative.
Project Transmission System Expansion Project No. 9Region 1; Subproject No.3
Cost Stream Alternative A
Benefit Stream Alternative D
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit _ Cost _ Net Benefit4.00 47786.05 47760.13 1.0005 25.926.00 35307.69 35270.41 1.0011 37.298.00 26615.17 26572.37 1.0016 42.81
230/115 KV MUKDAHAN 2 SUBSTATIONS AND 115 KV MUKDAHAN 2
- THAT PHANOM - NAKHON PHANOM LINES AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.13.
b) Alternative Plans The four possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998QI Lai-I i1~
- Termination of one circuit ot 230 kV Savannakhet - Roi Et at Mukdahan
2 Substation.
- Installation of 2x200 MVA 230/115 kV transformers at Mukdahan 2
Substation.
- Construction of 115 kV Mukdahan 2 - That Phanom line, double circuit
steel tower, using 795 MCM ACSR, a distance of approximately 36 km.
- Construction of 115 kV That Phanom - Nakhon Phanom line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 59 km.
The economic cost is 755.5 MTHB.
-45-
Year 2003
- Installation of lx20( MVA 230/115 kV transformer at Roi Et Substation.
The economic cost is 114.2 MTHB.
Year 2005
- Stringing second circuit of 115 kV That Phanom - Nakhon Phanom line,
using 795 MCM ACSR conductor, a distance of approximately 59 km.
The economic cost is 6237 MTHB.
Alternative B
Year 1998
- Termination of one circuit of 230 kV Thakhek - Sakon Nakhon 2 at
Nakhon Phanom 2 Substation.
- Installation of 2x200 MVA 230/115 kV transformers at Nakhon Phanomn
2 Substation.
- Construction of 115 kV Nakhon Phanom 2 - Nakhon Phanom 1 line,
double circuit steel tower, using 2x795 MCM ACSR conductor, a distance of
approximately 13 km.
- Construction of 115 kV Nakhon Phanom 1 - That Phanom line, double
circuit steel toWer, using 795 MCM ACSR conductor, a distance of approximately 59
km.
- Construction of 115 kV That Phanom - Mukdahan line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 45 km.
The economic cost is 865.5 MTHB.
-46 -
Year 2001
- Installation of lx200 MVA 230/115 kV transformer at Roi Et Substation.
The economic cost is 114.2 MTHB.
Year 2005
- Stringing second circuit of 115 kV That Phanom - Mukdahan line, using
795 MCM ACSR conductor, a distance of approximately 45 km.
The economic cost is 45.0 MTHB.
Alternative C
X.TA..A._ 1 AA OIL lai 17:70
- Construction of 115 kV Sakon Nakhon - That Phanom line, double
circuit line, using 795 MCM ACSR conductor, a distance of approximately 70 km.
- Construction of I 15 kV That Phanom - Nakhon Phanom line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 59 km.
- Construction of 115 kV That Phanom - Mukdahan line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 45 km.
The economic cost is 625.0 MTHB.
Year 2001
- Installation of I x200 MVA 230/115 kV transformer at Roi Et Substation.
The economic cost is 114.2 MTHB.
-47-
Year 2004
- Stringing second circuit of 115 kV That Phanom - Mukdahan line. usine
795 MCM ACSR conductor, a distance of approximately 45 km.
The economic cost is 45.0 MTHB.
Year 2005
- Stringing second circuit of 115 kV That Phanom - Nakhon Phanom line,
using 795 MCM ACSR conductor, a distance of approximately 59 km.
The economic cost is 62.7 MTHB.
Alternative D
Year 1998
- Construction of 115 kV Sakon Nakhon - That Phanom line, double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 70
km.
- Construction of 115 kV That Phanom - Nakhon Phanom line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distancc of
approximately 59 km.
- Construction of 115 kV Phon Thong - Mukdahan line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance ol
approximately 90 km.
- Stringing second circuit of 115 kV Roi Et - Phon Thong line, using 795
MCM ACSR conductor, a distance of approximately 45 km.
-48-
The economic cost is 847.7 MTHB.
Year 2001
- Installation of lx200 MVA 230/115 kV transformer at Roi Et Substation.
The economic cost is 114.2 MTHB.
Year 2004
- Stringing second circuit of 115 kV Phon Thong - Mukdahan line, using
795 MCM ACSR conductor, a distance of approximately 90 km.
The economic cost is 71.2 MTHB.
wy.. ~nr.nr
- Stringing second circuit of 115 kV That Phanom - Nakhon Phanom line,
using 795 MCM ACSR conductor, a distance of approximately 59 km.
The economic cost is 62.7 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix l.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 15,955.30
Alternative B 16,323.02
Alternative C 16,219.11
Alternative D 16,237.27
-49-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 367.72 1.0230 >150.00
Alternative A VS. Alternative C 263.81 1.0165 31.53
Alternative A VS. Alternative D 281.97 1.0177 145.89
Results of the analysis have led to the conclusion that the constructionof 230/115 kV Mukdahan 2 Substation and line termination together with construction
of 115 kV Mukdahan 2 - That Phanom - Nakhon Phanom transmission system project
is the least cost alternative.
-sn-.
Tabie 4.13Load Forecast for Nakhon Phanom, That Phanom
SUBPROJECT NO.10115 KV CHAIYAPHUM - BAMNET NARONG LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.19.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
* Construction of 115 I-V Chai-aphum - Bim. net NTrong line, siLng circui
on double circuit steel tower, using 795 MCM ACSR conductor, a distance ofapproximately 58 km.
The economic cost is 251.7 MTHB.
Alternative B
Year 1998
- Construction of 115 kV Nakhon Ratchasima 2 - Bamnet Narong line,
single circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance
of approximately 65 km.
The economic cost is 264.1 MTHB.
-65-
Alternative C:
Year 1998
- Installation of three units 25 MW gas turbine power plant at Bamnet
Narong Substation.
The economic cost is 1,134.0 MTHB.
The installation schedules of Alternative A, B and C are shown in Figures
4.1 to 4.3.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 22,059.14
Alternative B 22,124.52
Alternative C 23,068.70
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%_
Alternative A VS. Alternative B 65.38 1.0030 >150.00
Alternative A VS. Alternative C 1,009.56 1.0458 62.81
Results of the analysis have led to the conclusion that the construction ofthe proposed 115 kV Chaiyaphum - Bamnet Narong transmission system project is the
least cost alternative.
-66-
Table 4.19
Load Forecast for Bamnet Narong Substation
Subprojec No.10
Fiscal Peak Demand Energy Demand Load Factor
Year MW % Increase GWh % Increase (%)
1994 14.00 - 61.40 - 50.07
1995 18.00 28.57 a 70.20 14.33 at 44.52
1996 19.20 6.67 79.20 12.82 47.09
1997 35.50 84.90 a/ 116.50 47.10 a/ 37.46
1998 36.80 3.66 189.00 62.23 58.63
1999 38.10 3.53 222.30 17.62 66.61
2000 39.40 3.41 253.10 13.86 73.33
2001 40.80 3.55 260.50 2.92 72.89
2002 42.20 3.43 268.10 2.92 72.52
2003 43.60 3.32 276.00 2.95 72.26
2004 45.00 3.21 284.10 2.93 72.07
2005 46.40 3.11 292.60 2.99 71.99
2006 47.79 3.00 301.30 2.97 71.97
Note: _l Highly demand increase due to demand of Asean Potash Mine Project.
-67-
Table 4.20Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9
Region 2; Subproject No. 10
Cost Stream : AterMftve A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
Figure 4.6 Installation Schedule for Subproject No.11(Kantharalak Substation) Alternative C
SUBPROJECT NO.12115 KV SURIN - SANGKIIA LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted asshown in Table 4.23.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 115 kV Surin - Sangkha line, single circuit on doublecircuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 49km.
The economic cost is 230.7 MTHB.
Alternative B
xYear 1998
- Construction of 115 kV Si Sa Ket - Sangkha line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance ofapproximately 74 km.
The economic cost is 291.6 MTHB.
-80 -
Alternative C
Year 1998
- Construction of 22 kV Surin - Sangkha distribution line with automatic
voltage regulators (AVR), using 185 sq.mm AAC conductor, a distance of
approximately 66 km.
The economic cost is 111.58 MTHB.
Year 2000
- Construction of 115 kV Surin - Sangkha line, single circuit on double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 49km.
The economic cost is 230.7 MTIHB.
The installation schedules of Alternative A, B and C are shown in Figure4.7 to 4.9.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 15,138.38
Alternative B 15,230.78
Altemative C 15,181.33
-81-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTIHB! _ _ _
Alternative A VS. Alternative B 92.40 1.0061 >150.00
Alternative A VS. Alternative C 42.95 1.0028 30.63
Results of the analysis have led to the conclusion that the construction ofthe proposed 115 kV Surin - Sangkha transmission system project is the least cost
SUBPROJECT NO.14230 KV KHLONG NGAE - YALA LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.27.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 230 kV Khlong Ngae - Yala line, double circuit steeltower, ising 1 j272 MCM ACSR rnuictor, a itanc osf a 120 km. (usicn
existing right-of-way of existing 115 kV Hat Yai 2 - Yala line).
- Construction of 230 kV Yala Substation with 2x200 MVA 230/115 kVtransforners.
The economic cost is 934.4 MTHB.
Alternative B
Year 1998
- Construction of 230 kV Khlong Ngae - Yala line, double circuit steel
tower, using 1,272 MCM ACSR conductor, a distance of approximately 120 km (usingexisting right-of-way of 115 kV Hat Yai 2 - Yala line), initially energized at 115 kV.
- Installation of 2x200 MVA 230/115 kV transformer at Khlong NgaeSubstation.
The economic cost is 896.6 MTHB.
-95-
Year 2006
- Installation of 1 x200 MVA 230/115 kV transformer at Hat Yai 2a-abstationl.
The economic cost is 89.4 MTHB.
Alternative C:
Year 1998
- Construction of 230 kV Khlong Ngae - Yala line, double circuit steel
tower, using 1,272 MCM ACSR conductor, a distance of approximately 120 km.
- Construction of 230 kV Yala Substation with 2x200 MVA 230/115 kVtransformer.
The economic cost is 1,258.0 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 20,548.56Alternative B 20,657.35Alternative C 20,891.41
Alternative D 20,800.02
-96-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.-
(MTHB)
Alternative A VS. Alternative B 108.78 1.0053 41.25
Alternative A VS. Alternative C 251.45 1.0122 >150.00
Results of the analysis have led to the conclusion that the construction of
230 kV Khlong Ngae - Yala transmission system project is the least cost alternative.
-97-
Table 4.27
Load Forecast for Yala, Pattani, Narathiwat,and Sugai Kolok Substations
SUBPROJECT NO.17115 KV SURAT TIANI - BAN DON LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.33.
b) Alternative Plans The three possible alternative plans to serve the same techllical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Stringing 2nd circuit of 115 kV Surat Thani - Ban Don lin,c using 477
MCM ACSR conductor, a distance of approximately 13 km.
The economic cost is 30.6 MTHB.
Year 2001
- Construction of 115 kV Phun Phin - Ban Don line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distancc oI
approximately 10 km.
The economic cost is 140.5 MTHB.
Alternative B
Year 1998
- Construction of 115 kV Phunphin - Ban Don line, singie circuit on
double circuit steel tower, using 795 MCM ACSR conductor. a distance of
approximately 10 km.
-110-
- Reconstruction of the existing 115 kV Surat Thani - Phunphin from
single circuit line using 150 sq.mm AAAC conductor to single circuit on double circuitline using 795 MCM ACSR conductor, a distance of approximately 6.2 km.
The economic cost is 170.3 MTHB.
Year 2003
- Stringing of the 2nd circuit of 115 kV Surat Thani - Phun Phin line,
using 795 MCM ACSR conductor, a distance of approximately 6.2 km.
The economic cost is 22.1 MTHB.
Alternative C
Year 1998
I nstallation of three units of 25 MW gas turbine power plant at Ban DonSubstation.
The economic cost is 1,134.0 MTHB.
Year 2000
- Installation of one unit of 25 MW gas turbine power plant at Ban DonSubstation.
The economic cost is 378.0 MTHB.
Year 2004
- Installation of one unit of 25 MW gas turbine power plant at Ban lDonSubstation.
-111-
The economic cost is 378.0 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 18,710.26
Alternative B 18,732.46
Alternative C 23,874.37
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 22.20 1.0012 >150.00
Alternative A VS. Alternative C 5,164.11 1.2760 >150.00
Results of the analysis have led to the conclusion that the 115 kV Surat
Thani - Ban Don Line Stringing project is the least cost alternative.
SUBPROJECT NO.18CONVERSION OF MAE MOH 3 - CHIANG RAI LINE FROM 115 KV TO
230 KV
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.35.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Conversion of Mae Moh 3 - Chiang Rai line from 115 kV to 230 kV and
installation of 2x200 MVA transformer at Chiang Rai Substation.
The economic cost is 397.7 MTHB.
Alternative B
Year 1998
- Construction of 115 kV Phayao - Chiang Rai line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 80 km.
- Installation of lx200 MVA 230/115 kV transformer at Mae Moh 3Substation.
The economic cost is 344.9 MTHB.
-115-
Year 2001
- Conversion of Mae Moh 3 - Chiang Rai line from 115 kV to at 230 kVariA -- n-in ' '.1A 1.ffx r 11')AI1 I IAT r - ,f PI- ID.;and installatuion of4vU LVI V 3A 2,0./11 kxV trans1U1%.Ae atL Chiar.g, RA i "uWs-o.
The economic cost is 341.7 MTHB.
Alternative C:
Year 1998
- Termination of the existing 115 kV Mae Moh 3 - Chiang Rai line at
Phayao Substation, using 1,272 MCM ACSR conductor, a distance of approximately I
km.
- Installation of lx200 MVA 230/115 kV transformer at Mae Moh 3Substation.
The economic cost is 134.1 MTHB.
Year 2001
- Conversion of Mae Moh 3 - Chiang Rai line from 115 kV to 230 kV and
installation of 2x200 MVA 230/115 kV transformers at Chiang Rai Substation.
The economic cost is 341.7 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
-116-
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 17,425.56
Alternative B 17,652.52
Alternative C 17,487.15
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) _ _ _
Alternative A VS. Alternative B 226.96 1.0130 >150.00
Alternative A VS. Alternative C 61.59 1.0035 22.63
Results of the analysis have led to the conclusion that the conversion ofMae Moh 3 - Chiang Rai line from 115 kV to 230 kV pfoject is the least costalternative.
-117-
Table 4.35
Load Forecast for Chiangrai, Mae Chan andThoeng Substations
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit4.00 39811.53 39507.44 1.0077 304.096.00 29764.71 29486.98 1.0094 277.728.00 22'08.87 22457.30 1.0112 251.56
SUBPROJECT NO.19115 KV LAN KRABU - KAMPHAENGPHET LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.37.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Construction of 115 kV Lan Krabu - Kamphaengphet line, double circuit
steel tower, using 795 MCM ACSR conductor, a distance of approximately 47 km.
The economic cost is 238.5 MTHIB.
Year 2006
- Construction of 115 kV Bhumibol - Tak 1 line, single circuit on double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 47
km.
The economic cost is 157.2 MTHB.
Alternative B
Year 1998
- Te..rn-fion of thei txisting 1 !s V Taik I - T-(-amnh enonhet line at Tak
2 Substation, using 477 MCM ACSR conductor, a distance of approximately 3 km.
-120-
- Installation of 2x200 MVA 230/115 transformers at Tak 2 Substation.
- Construction of 115 kV Bhumibol - Tak 1 line, single circuit on doublecircuit steel tower, using 795 MCM ACSR conductor, a distance' of approximately 47km.
- Construction of 115 kV Tak 2 - Kamphaengphet line, single circuit ondouble circuit steel tower, u'sing 795 MCM ACSR conductor, a distance ofapproximately 53 km.,
The economic cost is 642.8 MTHB.
Alternative C
Year 1998
- Termination 'of the existing 230 kV Bhumibol - Nakhon Sawan line atKamphaengphet Substation, using 1,272 MCM ACSR conductor, a distance ofapproximately 2 km.
- Construction of 230 kV Kamphaengphet Substation with 2x200 MVA230/115 kV transformers.
The economic cost is 404.0 MTHB.
Year 2006
- Termination of the second circuit of 230 kV Bhumibol - Nakhon Sawanline at Kamphaengphet Substation, using 1272 MCM ACSR conductor, a distance ofapproximately 2 km.
The economic cost is 123.5 MTHB.
-121 -
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Econo...ic A ;
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 17,599.85
Alternative B 17,845.92
Alternative C 17,762.88
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (__ __
Alternative A VS. Alternative B 246.07 1.0140 >150.00
Alternative A VS. Alternative C 163.04 1.0093 >150.00
Results of the analysis have led to the conclusion that the construction of
115 kV Lan Krabu - Kamphaengphet transmission system project is the least cost
alternative.
-122-
Table 4.37
Load Forecast for Tak 1, Mae Sot andKamphangphet Substations
Subproect No.1 9
Fiscal Peak Demand Energy Demand Load Factor
Year MW % Increase GWh % Increase (%)
1994 55.85 - 262.35 - 53.62
1995 65.31 16.94 305.36 16.39 53.37
1996 72.02 10.27 332.84 9.00 52.76
1997 78.99 9.68 370.09 11.19 53.48
1998 86.28 9.23 404.09 9.19 53.46
1999 93.85 8.77 440.27 8.95 53.55
2000 101.80 8.47 479.76 8.97 53.80
2001 110.18 8.23 522.63 8.94 54.15
2002 119.03 8.03 563.79 7.88 54.07
2003 127.95 7.49 606.89 7.64 54.15
2004 138.46 8.21 658.32 8.47 54.28
2005 149.14 7.71 712.59 8.24 54.54
2006 160.53 7.64 772.33 8.38 54.92
-123-
Table 4 . 3 8Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 4; Subproject No.19
Cros+ Q+r: rnt A - AtS WLutIAu - fl ttA. u....- w
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
SUBPROJECT NO.20115 KV MAE MOH 3 - LAMPANG 2 LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.39.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Construction of 115 kV Mae Moh 3 - Lampang 2 line, double circuit
steel tower, using 2x795 MCM ACSR conductor. a distance of approximately 27 km.
The economic cost is 274.6 MTHB.
Year 1999
- Installation of 1x200 MVA 230/115 kV transformer at Chiang Mai 3
Substation.
The economic cost is 129.7 MTHB.
Year 2000
- Reconstruction of the existing Mae Moh 2 - Lampang 1 - Lamphun 1from 115 kV single circuit line to 230 kV Mae Moh 3 - Saraphi double circuit line.
using 2x1,272 MCM ACSR conductor, a distance of approximately 124 km.
- Construction of 115 kV Mae Mob 3 - Lampang I line, double circuit
steel tower, using 795 MCM ACSR conductor, a distance of approximately 41 km.
-125-
- Construction of 115 kV Lamphun 2 - Lamphun 1 line, double circuitsteel tower, using 795 MCM ACSR conductor, a distance of approximately 16 km.
- Construction of 230 kV Sarapni Substation wi'uh 2-00 MVIA 230/115kV transformers.
The economic cost is 1,943.5 MTHB.
Alternative B
Year 1998
- Reconstruction of the existing Mae Moh 2 - Lampang 1 - Lamphun Ifrom 115 kV single circuit line to 230 kV Mae Moh 3 - Saraphi double circuit line,using 2x1,272 MCM ACSR conductor, a distance of approximately 124 km.
- Construction of 115 kV Mae Moh 3 - Lampang 1 line, double circuitsteel tower, using 795 MCM ACSR conductor, a distance of approximately 41 km.
- Construction of 115 kV Lamphun 2 - Lamphun 1 line, double circuitsteel tower, using 795 MCM ACSR conductor, a distance of approximately 16 km.
- Construction of 230 kV Saraphi Substation with 2x200 MVA 230/115kV transformers.
The economic cost is 1,975.7 MTHB.
Year 2000
- Construction of 115 kV Mae Moh 3 - Lampang 2 line, double circuitsteel tower, using 2x795 MCM ACSR conductor, a distance of approximately 27 km.
Te economic CU0L iS 3O. IVI2 IMTH.
-126-
Year 2006
- Installation of lx200 MVA 230/115 kV transformer at Chiang Mai 3
Substation.
The economic cost is 129.7 MTHB.
Alternative C
Year 1998
- Termnination of the existing 230 kV Mae Moh 3 - Chiang Mai 3 and 115kV Lampang 2 - Lamphun 2 at Hang Chat Substation and installation of 2x200 MVA
230/115 kV transformers at Hang Chat Substation.
The economic cost is 519.3 MTHB.
Year 2000
- Reconstruction of the existing Mae Moh 2 - Lampang 1 - Lamphun Ifrom 115 kV single circuit line to 230 kV Mae Moh 3 - Saraphi double circuit line,
using 2x1,272 MCM ACSR conductor, a distance of approximately 124 km.
- Construction of 115 kV Mae Moh 3 - Lampang 1 line, double circuit
steel tower, using 795 MCM ACSR conductor, a distance of approximately 41 km.
- Construction of 115 kV Lamphun 2 - Lamphun 1 line, double circuit
steel tower, using 795 MCM ACSR conductor, a distance of approximately 16 km.
- Construction of 230 kV Saraphi Substation with 2x200 MVA 230/115kV transformers.
The economic cost is 1,975.7 MTHB.
-127-
Year 2006
- Reconstruction of 115 kV Saraphi - Chiang Mai 2 from double circuitline using 477 MCM ACSR conductor to doublc circuit line usinLg 2Lx179151 ACSR
conductor, a distance of approximately 16 km.
The economic cost is 193.7 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 15,908.04
Alternative B 15,961.24
Alternative C 16,175.12
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB! -_ _ _
Alternative A VS. Altemative B 53.20 1.0033 N.A.
Alternative A VS. Alternative C 267.08 1.0168 > 150.00
Results of the analysis have led to the conclusion that the construction the
proposed construction of 115 kV Mae Moh 3 - Lampang 2 transmission system project
SUBPROJECT NO.21115 KV CHIANG MAI 2 - MAE TAENG LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.41.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 115 kV Chiang Mai 2 - Mae Taeng line, single circuit
on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 42 km.
The economic cost is 259.6 MTHB.
Alternative B
Year 1998
- Installation of eighteen units of 2.5 MW diesel power plant at Mae
Taeng Substation.
The economic cost is 927.0 MTHB.
Year 2001
- Installation of six units of 2.5 MW diesel power plant at Mae Taeng
Substation.
-131 -
The economic cost is 309.0 MTHB.
Year 2005
- Installation of three units of 2.5 MW diesel power plant at Mae Taeng
Substation.
The economic cost is 154.5 MTHB.
Alternative C
Year 1998
- Installation of three units of 25 MW gas tturbine power plant at MaeTaeng Substation.
The economic cost is 1,134.0 MTHB.
The installation schedules of Alternative A, B and C are shown in Figures
4.10 to 4.12.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 14,818.93
Alternative B 15,392.43
Alternative C 15,431.49
-132-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.(MTHB! (%)
Altemative A VS. Alternative B 573.50 1.0387 52.37
Alternative A VS. Alternative C 612.56 1.0413 110.56
Results of the analysis have led to the conclusion that the construction ofthe proposed 115 kV Chiang Mai 2 - Mae Taeng transmission system project is the leastcost alternative.
Notes: I Based on producion costotUSD1 2.3/ton (estmated by Mine Engineering Departmnenton May 3,1994) January 11,19952j Based on FOB price estimated by IBRD (June 1994) and included treight and insurance cost of USD 7.0/ton and inland transportation cost of USD 6.0/ton.
c/ Estimated by PTT on Novenber 15,1994.
Souroe: EGAT's Power Developmnent Plan 95-01 (Volume I : Main Report).
TABLE 5.2FUEL PRICE FOR OPTIMIZATION OF EGAT'S PDP 95-01
(CURRENT PRICE)
Fiscal Lignite (Mae Moh) Imported Coal Heavy Oil Diesel Oil Natural Gas Natural GasYear (0.5 %Sul ( Manmart
USD/MBtu USD/Ton % Inc. USD/MBtu USD/Ton % Inc. USD/MBtu |THB/Litre % Inc. USD/MBtu TIHB/Lilre % Inc. USD/MBtu THB/MBtu % Inc. USD/MBtu THB/MBtu % Inc.
b/ Based on FOB price estimated by IBRD (June 1994) and included freight end insurance cost of USD 7.0/ton, import duty of 1% of FOB price and inland transportation cost of USD 6.0/ton.c/ Estimated by PTT on November 15,1994.
Source: EGAT's Powar Development Plan 95-01 (Volume li: Financial Analysis).
TABLE 5.3CALCULATION OF EIRR OF EGAT'S PDP 95-01 (1995-1998)
TRANSMISSION SYSTEM EXPANSION PROJECT NO.9
Fiscal Cost Stream Benefit Stream NetYear Capital O&M Incremental Total Total Incremental Average Selling Price Sale Benefit
Cost Cost Energy Cost Energy Energy Sale THE/kWh) Revenue (MTHB)Cost Sale (GWh) (GWh) Current Price 1994 Price (MTHB)
Economic Internal Rate of Return - 11.77%30-Mar-95
TABLE 5.4CALCULATION OF FIRR OF EGAT'S PDP 95-01 (1995-1998)
TRANSMISSION SYSTEM EXPANSION PROJECT NO. 9
Fiscal Cost Stream Benefit Stream NetYear Capital O&M Incremental Total Total Incremental Average Selling Price Sale Benefit
Cost Cost Energy Cost Energy Energy Sale (TH /kWh Revenue (MTHB)1991 397.58 Cost Sale (GWh) (GWh) Current Prce 1994 Prce (MTHB) _ 9.1991 397.58 397.58 -397.58
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