MSETCL RTC PADGHE BATCH (21.1.2014) POWER LINE CARRIER COMMUNICATION Job aids (Basic Course) For Restricted circulation only Guided By Shashank S.Jewalikar SE TCC MSETCL Aurangabad PLCC training material designed for MSETCL Engineers This course provides the information required to confidently understand & assess the quality of PLCC network.
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MSETCL RTC PADGHE BATCH (21.1.2014)
POWER LINE CARRIER COMMUNICATION
Job aids (Basic Course)
For Restricted circulation only
Guided By
Shashank S.Jewalikar
SE TCC MSETCL Aurangabad
PLCC training material designed for MSETCL Engineers This course provides the information
required to confidently understand & assess the quality of PLCC network.
Page 2 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
Index
Sr No Job Aid Page No
1 PLCC Introduction 3
2 Wave Trap 7
3 CC/CVT 13
4 LMU 17
5 Coaxial cable 23
6 PLCC Panel (ETL & 9505 V3) 25
7 Protection coupler(NSD 50 & DC 42) 31
8 PLCC Data MODEM (NSK 5) 37
Page 3 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -1
Name of Trainee –
Batch –
1.1 Title: Identification of Power line carrier communication Indoor & Outdoor equipment and their
applications.
1.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
a. Identify PLCC Indoor & Outdoor equipment.
b. Understand application of PLCC equipment.
1.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
1.4 Set up/ Equipment Required:
Wave Trap/ Line Trap
Coupling Capacitor(CC)/ CVT
Line Matching Units (LMU A & B Unit)
HF cable
Power Line Carrier Terminal ( ABB/BPL) with Protection coupler & PLCC Data MODEM
48 V Supply
Electronic Programmable Automatic Exchange (EPAX)
1.5 Exercise:
1.5.1. Study the PLCC diagram.
Page 4 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
1.5.2 Identify the different Outdoor Equipment of Power Line Carrier Communication (PLCC) System &
their uses.
Equipment / Cable
Name of Equipment/
Cable
Use
Page 5 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
1.5.3 Identify the different Indoor Equipment of Power Line Carrier Communication (PLCC) System &
their uses.
Equipment
Name of Equipment
Use
Page 6 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
1.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
1.7 Self - Assessment :
1 The Power line carrier communication is a technology which uses ------------------------------ as
physical media for Speech, data & Protection signal transmission.
2. In PLCC power line conductors are used for ----------------------- instead of separate telephone
lines.
3. Power utility operators communicate with each other to -------------------------------------------- &
exchange all kinds of operational information.
4. PLCC provides very limited --------------------- & is not suitable where the requirement of Voice &
Data channels is large.
5. The R.F. range in PLCC system is ------KHz to -------------KHz.
(Power line, Communication, co ordinate actions, Bandwidth, 50 to 500 KHz, )
Page 7 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -2
Name of Trainee –
Batch –
2.1Title: Wave trap or Line trap
2.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
c. Identify different parts of Wave trap & their functions.
d. Select blocking band of wave trap.
2.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
2.4 Set up/ Equipment Required:
Wave Trap/ Line Trap Main Coil
Tuning pot
LA
2.5 Exercise:
2.5.1. Identify Main coil, tuning pot & LA in following diagram.
.
Page 8 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
2.5.2 Study the following figure & identify Tuning pot, LA & Main Coil.
2.5.3 Write down the function of Tuning pot, LA & Main Coil.
Main Parts of Line trap
Use
Main Coil
Tuning Pot
LA
Page 9 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
2.5.4 Select Blocking band of Wave trap
BPL Make Wave Trap
PLCC Frequency Band Selection
96/92 U KHz
104/112 UL KHz
148/152 U KHz
488/480 UL KHz
72/76 U KHz
W.S. Make Wave Trap
PLCC Frequency Band Selection
96/92 U KHz
104/112 UL KHz
148/152 U KHz
488/480 UL KHz
72/76 U KH
Page 10 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
ALSTOM / AREVA Make Wave trap
PLCC Frequency Band
Selection
96/92 U KHz
104/112 UL KHz
148/152 U KHz
488/480 UL KHz
72/76 U KH
GYRO Make Wave trap
PLCC Frequency Band
Selection
96/92 U KHz
104/112 UL KHz
148/152 U KHz
488/480 UL KHz
72/76 U KH
Page 11 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
2.5.5 Study Pedestal wave trap with insulator & structure.
Page 12 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
2.5.6 List of routine tests (as per IEC 60353)
1. Measurement of blocking impedance of line trap.
2. Power frequency voltage withstand dry test on tuning device 8.17 KV rms for 5 seconds.
3. Measurement of rated inductance of main coil.
4. Measurement of power frequency inductance of main coil.
5. Dimensional checks.
2.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
2.7 Self - Assessment :
1. Wave trap is connected in ------------------ to the line in switch yard.
2. --------------------- Frequency signals are blocked by wave trap entering into switch yard.
3. The rated inductance of main coil for 220 KV Wave Trap is -------------------------.
4. In wave trap Main coil, LA & tuning devices are --------------- connected to each other.
(Series, carrier, 0.5 milli Henry, Shunt)
Page 13 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -3
Name of Trainee –
Batch –
3.1Title: Coupling Capacitor or CVT
3.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
e. Identify different parts of CC/CVT.
f. Connection of CC/CVT to LMU
3.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
3.4 Set up/ Equipment Required:
CC
CVT
Single insulated lead in wire
3.5 Exercise:
3.5.1. Label the parts of coupling capacitor
1. Primary Terminal
2. Expansion system
3. Capacitor elements
4. Rating voltage
5. Low voltage terminal
6. Support insulator.
Page 14 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
3.5.2 Study different parts of CGL , ABB & Alstom Make CC
Page 15 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
3.5.3 Study different parts of CVT.
1. High Voltage Terminal
2. Compensation reactor
3. Intermediate Voltage transformer
4. Ground terminal
5. Ferro resonance suppression device
6. Damping resistor
7. Carrier (HF) terminal
8. Overvoltage Protective device
9. Secondary terminals
10. Link to be opened for test purposes.
3.5.4 Locate HF Point in CVT
Page 16 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
3.5.5 List of Routine tests as per IEC 60358.
1. Capacitance & tangent of the loss angle before the voltage test.
2. A.C. Voltage test (Dry) between Terminals.
3. Partial discharge test.
4. Capacitance & tangent of the loss angle after Voltage test.
5. Power frequency test on the Earth terminals.
6. Sealing test.
7. Dimensional checks
3.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
3.7 Self - Assessment :
1. ----------------------------- offers the isolation between high voltage line and carrier equipments.
2. Coupling capacitor offers ----------------------------- impedance to carrier frequencies.
3. CVT consists of coupling capacitor and ----------------------------------------------------------.
4. Coupling capacitor in CVT is used for -----------------------------------------------------------.
(Coupling Capacitor, Low, Voltage transformer, carrier communication)
Page 17 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID - 4
Name of Trainee –
Batch –
4.1Title: Line Matching Unit, 3 element Protection device & Coaxial cable
4.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
g. Identify different parts of LMU & 3 element protection device
h. Select Pass band of LMU
i. Connect CC/CVT to LMU by single Insulated lead in conductor
j. Connect Main HF & HF loop
k. Prepare End connector of HF cable.
4.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
4.4 Set up/ Equipment Required:
LMU with 3 element protection device
Single insulated lead in wire
HF cable
4.5 Exercise:
4.5.1. Demonstration by faculty.
Page 18 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
4.5.2 Identify different parts of LMU.A & B unit.
4.5.3 Write down the function of each.
Name of Part Function
Balancing Transformer
Matching Transformer
Filter
Page 19 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
4.5.4 List down the 3 elements of Protection device with their use.
Name of Element
Function
4.5.5 Select Pass band of LMU
BPL Make Line Matching Unit
PLCC
Frequency
Band
Selection
1. Band I (35 – 50 KHz)
2. Band II (50 – 90 KHz)
3. Band III (90 – 500 KHz)
96/92 U
KHz
104/112 UL
KHz
148/152 U
KHz
488/480 UL
KHz
72/76 U
KH
Page 20 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
4.5.6 What is the purpose of Single insulated lead in wire in PLCC system & where it is connected?
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
Page 21 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
.4.5.7 Study CC to LMU connection in case of BPL Make LMU & ABB Make Coupling device.
.
Page 22 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
4.5.8 Acceptance Tests for Coupling device
1. Composite loss
2. Return loss
3. HV test on Transformers
4. Inductance of Drainage coil.
5. PF Spark Over Voltage Test on Lightning arrestor
6. Operation check on earth switch
7. Dimensional checks
8. Visual & General Arrangements
4.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
4.7 Self - Assessment :
1. To match the impedance between power line & carrier terminal ---------------------------- is used.
2. LMU consists of Balancing transformer, Matching transformer and --------------------.
3. To connect Coupling capacitor to LMU---------------------------------------------- is used.
4. The PLC Terminal is connected to LMU in switch yard by means of --------------.
5. Three element protection device consists of Drainage coil, LA & --------------------.
6. Earth switch in Protection device is --------------- during maintenance.
(LMU, filter, Single insulated lead in wire, HF cable, earth switch, closed)
Page 23 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -5
Name of Trainee –
Batch –
5.1 Title: Co axial cable
5.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
l. Identify Coaxial cable
m. Connection of HF Coaxial cable
5.3 Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
5.4 Set up/ Equipment Required:
HF Coaxial cable
Soldering gun with metal
HF End connectors
AC supply
5.5 Exercise:
5.5.1. Name the different parts of HF cable
(Copper center conductor, Insulator, copper/ Aluminium mesh, Protective outside cover)
Page 24 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
5.5.2 Explain the procedure for connecting Cable connector plugs to HF Coaxial cable.
Instructions for connecting cable connector plugs to HF coaxial cable
1. Cut off the coaxial cable somewhat longer than needed (according to local conditions) leaving
enough slack to make a loop when connecting the cable.
2. Loosen the screw and take the plug to pieces.
3. Put the cone and threaded cylinder over the cable.
4. Remove PVC covering and copper braiding for a length of 20 mm(4/5inch)
5. Cut off PVC covering for an additional length of 6 mm( 1/4inch)
6. Slightly spring open the slit section of the plug interior.
7. Push the cable into the spring opening of the above part.
8. Draw the copper braiding through the two holes in the plug interior piece and solder it to the
outside of the plug interior piece.
9. Solder the cable conductor to the plug pin and cut off the part which protrudes.( Do not heat the
pin too long because of the polyethylene insulation)
10. Slide the threaded cylinder and the cone back into position and tighten the screw.
11. Test cable for continuity and short circuit.
12. Fasten the cable beneath the connector plug by means of bracket clip so that the plug is not
subjected to any tension
5.5.3 Demonstration of preparation of HF cable connector by faculty.
5.6 Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
5.7 Self - Assessment :
1. PLCC terminal is connected to LMU, in switch yard by means of ---------------------.
2. Coaxial cable is a --------- conductor cable made of a single conductor surrounded by a braided
wired jacket with a plastic insulating material separating the two.
3. The coaxial cable provides ------------- so that noise cannot get into the cable & cause
interference..
4. The characteristic impedance of the coaxial cable is either ---------or ------------ohms
(Co axial cable, two, Shielding, 75 or 125)
Page 25 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
JOB AID -6
Name of Trainee –
Batch –
6.1Title: Power Line Carrier Communication (PLCC) Panel/ Terminal/Cabinet/Set
6.2 Objective: On completion of this visit / Practical exercise, the trainee will be able to :
n. Identify PLCC Panel (Make, Type, Single/ Twin Channel)
o. Identify different Modules/prints & their function.
p. Select frequency
6.3Venue/ Site: Training Center.
[In training locations where the required equipment /set up is not available the same will be carried
out through field visit]
6.4 Set up/ Equipment Required:
ABB Make ETL 41/42 Panel with Protection coupler & NSK 5
BPL Make V3 Panel with DC 42 Protection coupler
6.5Exercise:
6.5.1. Demonstration by Faculty.
Page 26 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
6.5.2Identify and locate the different cards available in ABB Make ETL PLCC panel
Page 27 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
Name of Card
Function
Indications/ Test points
B5LA
Power Supply Unit
48 V DC
E5LA
E5LB
Tx Filter ( 100-500 KHz)
Tx Filter (24-100 KHz)
P3LB
RF Hybrid
P3LK
Dummy Load
B4LA
48 V DC to DC converter
G4AA
DSP Card
G4AC
Relay Interface 1
G4AC
Relay Interface 2
NSK 5
PLCC Data MODEM
O4LA
Data Interface
O4LC
Speech Interface
P4LA
Pilot & supervision
P4LB
AF Converter
P4LC
IF Converter
P4LD
Rx RF Converter
P4LF
Tx RF Converter
P4LG Carrier Generator
P4LE
Rx RF Converter Ch 1 & 2
P4LI
Carrier Generator
Page 28 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
6.5.3 Write down the function of different cards of BPL Make 9505 V3 Panel.
Module
Name of Module
Function
95 AMP
95 PLF
95 PSU
95 MEMRI
Page 29 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
Module
Name of Module
Function
95 SPIN
95 MODEM
95 DATA
95 LINT
Page 30 of 42
Power Line Carrier Communication Basic course for MSETCL, JE INDUCTION LEVEL Training Programme
By S.V.Kulkarni DyEE PLCC Pune email [email protected] Mobile 9405600828/9767104420
6.5.4Compare performance of ABB Make ETL & BPL Make 9595 V3 PLCC panel
Sr
No
Feature BPL Make 9505 V3 PLCC panel ABB Make ETL PLCC Panel
1 Pilot frequency
programming
3 AF Pilot can be selected. After changing
pilot, FSK tuning is required
5 AF pilot can be selected easily.
2 Loop test In some PLCT LTM feature does not
respond i.e. standalone testing not possible in
some link.
Stand alone testing possible.
3 RLB In some PLCTs, RLB getting ON
automatically in spite of RLB switch in OFF
position, which create problem in speech.
It does not operate unless & until
made ON.
4 Module failure rate High. Very low
5 95 MODEM As it includes lot of function gives problem
in alignment when PLCT frequency is to be
changed
There are different modules for
different functions, Easy to tuned
for new frequency on field,
6.6Learning Outcome : ( to be filled by participants)
………...………………………………………………………………………………………………
…………………………………………………………………………………………………………
6.7Self - Assessment :
1. ------------------- Modulation is used in PLCC system to modulate AF signals.
2. Modulation & Demodulation requires ---------------- frequency which is generated in PLCC panel.
3. The frequency band for Single side band transmission in PLCC system is ---------------KHz.
4. Speech, data, Pilot/Dial & protection signals are connected to PLCC terminal in ------------
section.
5. ------------- Signal transmitted from station A, controls the AGC of the receiver of station B and
vice versa.
6. PLCC Terminals are used as a -----------, one at each end of the power line between substations.
7. Each PLCC Terminal is designated for a set of ---------- & -------------- frequencies. These
frequencies may be adjacent or separate. The corresponding PLCC terminal at the other end will
be designated for the ------------ value of the transmission & reception frequencies.
8. The channel frequency will be either ----KHz or ----KHz bandwidth depending upon S.C or T.C.