PPF

PLANT

FAMILIARIZATION

SSTPS• STAGE – I ---- 5 X 200 MW

• STAGE – II ---- 2 X 500 MW

• WATER SOURCE --- RIHAND DAM

• COAL SOURCE --- JAYANT MINES

MAINPLANT

CW COMPLEX

CHP

TRACK HOPPER

CRUSHER HOUSE

COAL MILL

GTAREA

TG &AUX.

BOILER & AUX.

• 5OO MW UNIT 21 / 400 KV

( 3 * 200 MVA )

200 MW UNIT 15.75 / 400 KV

(235 MVA )

Unit Auxiliary Transformer (2 Nos./Unit)

21 / 6.6 KV

Station Transformer ( 4 Nos. / Station ) 132 / 6.6 KV

Turbine (500 MW ) --- KWUHP Turbine ---- 18 StagesIP Turbine ----- 14 x 2 StagesLP Turbine ----- 6 x 2 Stages

Turbine (200 MW ) --- HP Turbine ---- 12 StagesIP Turbine ---- 11 StagesLP Turbine ---- 4 x 2 Stages

CONDENSERCondensate Extraction Pump (CEP)Gland Steam Condenser (GSC)LP Heaters (LPH)Drain Cooler (DC)Deaerater (D/A)Boiler Feed Pump (BFP)HP Heaters (HPH)

Continued ---

TG & Auxiliaries

DMCW PUMP

ARCW PUMP

Plate Heat Exchanger (PHE)

Vacuum Pump To be continued ----

TG & AuxiliariesMAIN OIL TANK

AOP-1AOP-2DC LOPJOP-1JOP-2DC JOP

CONTROL FLUID TANK (FRF)CF PUMP-1CF PUMP-2

BOILER & AUX.BOILER

Corner FiredTangential TiltBalanced Draft

Air Pre Heater ( APH )PAPH – A/BSAPH - A/B

PA FANFD FANID FANCOAL MILLS (XRP 1003 / 803)SEAL AIR FANSESPBCW PUMPS

Flue Gas

STEAM

DRUM LTSHDIVISIONAL

SHPLATEN

SH

HPT

REHEATERIPTLPTCONDENSER

HOTWELL

HP BYPASS OPERATION`HP BYPASS OPERATION`

RAISING OF STEAM PARAMETER DURING RAISING OF STEAM PARAMETER DURING TURBINE ROLLING TURBINE ROLLING

PARALLEL OPERATION WITH TURBINE ON PARALLEL OPERATION WITH TURBINE ON LOAD REJECTIONLOAD REJECTION

PREVENTING SAFETY VALVES OPENING PREVENTING SAFETY VALVES OPENING AT RAISED STEAM PRESSURES.AT RAISED STEAM PRESSURES.

HPBP OPENING CRITERIAHPBP OPENING CRITERIA

HPBP DOWN STREAM

TEMPERATURE < 380 Deg C

CRH DRAIN POT LEVEL NOT

HIGH

CONDENSER VACUUM > -0.8 Ksc

FAST OPENING OF HP BYPASSFAST OPENING OF HP BYPASS

GENERATOR BREAKER OPENSGENERATOR BREAKER OPENS TURBINE LOAD SHEDDING RELAY TURBINE LOAD SHEDDING RELAY

OPERATEDOPERATED PR. COTROLLER DEVIATION HIGH PR. COTROLLER DEVIATION HIGH

(>10%)(>10%) DEPRESSING OF “ FAST OPEN “ PUSH DEPRESSING OF “ FAST OPEN “ PUSH

BUTTON FROM UCBBUTTON FROM UCB

BFP DISCHARGE

BD

BPE-1 BPE-2BP-1 BP-2

MAIN STEAM LINE

CRH LINE

MAIN STEAM LINE

CRH LINE

BP

BD

BDE

BFP DISCHARGE

Injection water Pr. > 25 Ksc

Exhaust steam Pr. < 19 Ksc

Condenser Wall Temp. < 90 DegC

Condenser Vacuum > -0.8 Ksc

CEP DISCHARGE

TO CONDENSER TO CONDENSER

HRH LINE

LBP-1 LBP-2LBPE-2LBPE-1

LBPE-3LBPE-4

CEP DISCHARGE

TO CONDENSER TO CONDENSER

HRH LINE

LBP-1 LBP-2LBPE-2LBPE-1

NRV

AUTO SHUT-OFF OF LP BYPASSAUTO SHUT-OFF OF LP BYPASS

CONDENSER VACUUM LOW ( BACK PR. > CONDENSER VACUUM LOW ( BACK PR. >

220 mm of Hg.)220 mm of Hg.)

SPRAY WATER PR. LOW (<10 Ksc)SPRAY WATER PR. LOW (<10 Ksc)

CONDENSER WALL TEMP. HIGH ( > 90*C )CONDENSER WALL TEMP. HIGH ( > 90*C )

LPBP DOWN STREAM PR. HIGH ( > 19 LPBP DOWN STREAM PR. HIGH ( > 19

Ksc )Ksc )

condenser vacuum > -0.3 ksc.condenser vacuum > -0.3 ksc.

ACI

FIXEDSET POINT

1st StageThrottle Pr.

FUNCTIONGENERATOR

SLIDINGSET POINT

MAXGATE

HRH PR.

LPBPEHC

ON / OFFAUTO / MANUAL

SELECTOR

CONTROL OIL

SIGNAL OIL

HP-LP BYPASS CAPACITY

60% OF FULL LOAD CAPACITY

REHEAT PROTECTION

• Turbine Trips & HP-LP bypass does not open. It will trip the Boiler after 5 Sec of turbine trip.

ARMING ------

200 T/Hr STEAM FLOW THROUGH

REHEATER

AUTOMATIC TURBINE RUN-UP

SYSTEM

GROUPS SGC CONTROL FLUID

SGC OIL

SGC EVACUATION

SGC TURBINE

SUB GROUP CONTROLSUB GROUP CONTROL ( SGC )( SGC )

LAMP

ACTION BUTTON

SUB LOOP CONTROLSUB LOOP CONTROL ( SLC )

• SLC IS A SUBSET OF SGC.SLC IS A SUBSET OF SGC.

• SLC TAKES CARE OF THE AUTO SLC TAKES CARE OF THE AUTO START OF THE EQUIPMENTS.START OF THE EQUIPMENTS.

• INTERLOCK IS PROVIDED THROUGH INTERLOCK IS PROVIDED THROUGH SLC.SLC.

• SLC MUST BE ON DURING START-UP / SLC MUST BE ON DURING START-UP / NORMAL RUNNING / SHUT-DOWN.NORMAL RUNNING / SHUT-DOWN.

210 240 540 600 2850 3000

BARRINGSPEED

B/GOFF

JOP OFF

SOAKING

HPT CASING

SHAFT

AOPOFF

MOP DISCHARGE

PR. IS 9 KSC.

(RPM)

( START-UP )( START-UP )

3000 2850 510 210 ( RPM )

SHUT-DOWN STARTS

JOP-1 STARTSIF JOP-1 FAILS TO START

AFTER 5 Sec. JOP-2 STARTS IFPR. < 110 Ksc.

BARRING GEAR ON

AUTO STARTING OF AOPAUTO STARTING OF AOP

AOP-1 TAKES START IF PR. < 4.8 KSC.

AOP-2 TAKES START IF PR. < 4.5 KSC.

EOP TAKES START IF PR. < 1.2 KSC.