PPF
Transcript of 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.