PRESENTATION
SINGLE LINE DIAGRAM FOR GENERATOR AND GEN. PROTECTION & METERING TIRORA COAL – FIRED POWER PLANT PROJECT (5 X 660 MW)
BTG - ELECTRICAL SLD FOR GENERATOR AND GEN. PROTECTION & METERING:TO GT & UT 22 KV IPBD TA9:400 / 5A 5P20 60VA
GPP - A
TA10:400 / 5A 5P20 60VA TA11:400 / 5A 0.5 30VA
TA8:25000 / 5A 5P40 60VA
IPBD
TA7:25000 / 5A 5P40 60VA
GPP - B
GTP DC ENB
PT / LA CABINET
TA6:25000 / 5A 0.2 100VA TA5:25000 / 5A 0.2 100VA
GPP - A GPP - B GTP & AVR AVR
+ AVR
ET
GEN
GPP – B, GTP & AVR
TA12:7500 / 5A 5P20 60VA
CABLE
GPP – A, GEMP GPP – B - GFR
GPP - A
-
TA13:7500 / 5A 5P20 60VA
GPP - B GPP - A SPARE
TA14:7500 / 5A 0.5 30VA
TA4:25000 / 5A 0.2S 100VA
GEMP
TA3:25000 / 5A 5P40 60VA
GPP - B
TA2:25000 / 5A 5P40 60VA
GPP - A
TA1:25000 / 5A 5P40 60VA
AC ENB
TO GEN. & UT PROT. PANEL USING FOR OVERALL DIFFERENTIAL PROTECTION
GTP TO GEN. SHAFT
GPP – A GPP – B
GPP – A, GPP – B - GFR
N.G.T.
415 V MCC TA0: 5 / 5A 0.5 30VA
GFR
EARTHING
2
BTG - ELECTRICAL SLD FOR GENERATOR AND GEN. PROTECTION & METERING:-
CT DETAILS FOR GENERATOR PROTECTION & METERING SR.NO.
CT CODE
CT DESCRIPTION
1
TA0
5 / 5A, 0.5, 30VA
2
TA1
25000 / 5A, 5P40, 60VA
PANEL
USES
QTY
GENERATOR FAULT RECORDER
USING FOR RECORD
1
TO GEN. & UT PROT. PANEL
USING FOR OVERALL DIFFERENTIAL PROTECTION
3
GEN. DIFFERENTIAL (87G1 ) Id / I THERMAL OVERLOAD (49G1) I> m=3
STARTUP / SHUTDOWN (59G1) I> 3
TA2
25000 / 5A, 5P40, 60VA
GENERATOR PROTECTION PANEL- A
NEGATIVE PHASE SEQUENCE OVERCURRENT (46G1) I> m≠ 3
3
VOLTAGE RESTRAINED OVERCURRENT (51VG1) U<, I> BACK-UP IMPEDANCE (21G1) Z< GEN. DIFFERENTIAL (87G2 ) Id / I THERMAL OVERLOAD (49G2) I> m=3 STARTUP / SHUTDOWN (59G2) I> 4
TA3
25000 / 5A, 5P40, 60VA
GENERATOR PROTECTION PANEL- B
NEGATIVE PHASE SEQUENCE OVERCURRENT (46G2) I> m≠ 3
3
VOLTAGE RESTRAINED OVERCURRENT (51VG2) U<, I> BACK-UP IMPEDANCE (21G2) Z<
3
BTG - ELECTRICAL SLD FOR GENERATOR AND GEN. PROTECTION & METERING:-
CT DETAILS FOR GENERATOR PROTECTION & METERING SR.NO.
CT CODE
CT DESCRIPTION
PANEL
USES
QTY
5
TA4
25000 / 5A, 0.2S, 100VA
ENERGY METER PANEL
USING FOR METERING (MAIN METER & BACKUP METER)
3
6
TA5
25000 / 5A, 0.2 100VA
EXCITATION CONTROL PANEL (AVR)
USING FOR EXCITATION SYSTEM
3
7
TA6
25000 / 5A, 0.2 100VA
GENERATOR TRANSDUCER PANEL & AVR
USING FOR CONVERT 4 - 20mA FOR DCS & EXCITATION SYSTEM
3
GEN. DIFFERENTIAL (87G2 ) Id / I LOSS OF EXCITATION (40G2) Ф< LOSS OF STEP (68/78 G2) dz/dt> 8
TA7
25000 / 5A, 5P40, 60VA
GENERATOR PROTECTION PANEL- B
3
REVERSE POWER (32G2) _P GENERATOR BACK - ENERGIZATION (50 / 27 G2) I> U> LOW FORWARD POWER (37 G2) P< GEN. DIFFERENTIAL (87G1 ) Id / I LOSS OF EXCITATION (40G1) Ф< LOSS OF STEP (68/78 G1) dz/dt>
9
TA8
25000 / 5A, 5P40, 60VA
GENERATOR PROTECTION PANEL- A
3
REVERSE POWER (32G1) _P GENERATOR BACK - ENERGIZATION (50 / 27 G1) I> U> LOW FORWARD POWER (37 G1) P<
4
BTG - ELECTRICAL SLD FOR GENERATOR AND GEN. PROTECTION & METERING:-
CT DETAILS FOR GENERATOR PROTECTION & METERING SR.NO.
10
CT CODE
TA9
CT DESCRIPTION
400 / 5A, 5P20, 60 VA
PANEL
GENERATOR PROTECTION PANEL- A
USES EXCITATION TRANSFORMER INSTANTANEOUS OVERCURRENT (50SET1) Is>
QTY
3
EXCITATION TRANSFORMER OVERCURRENT (51ET1) I>
GENERATOR PROTECTION PANEL- B 11
TA10
400 / 5A, 5P20, 60 VA
EXCITATION TRANSFORMER INSTANTANEOUS OVERCURRENT (50SET2) Is> EXCITATION TRANSFORMER OVERCURRENT (51ET2) I>
GENERATOR FAULT RECORDER
USING FOR RECORD
3
12
TA11
400 / 5A, 0.2, 30 VA
GENERATOR TRANSDUCER PANEL & AVR
USING FOR CONVERT 4 - 20mA FOR DCS & EXCITATION SYSTEM
3
13
TA12
7500 / 5A, 5P20, 60 VA
GENERATOR PROTECTION PANEL- B
EXCITATION TRANSFORMER THERMAL OVERLOAD (49ET2) 3I>
3
14
TA13
7500 / 5A, 5P20, 60 VA
GENERATOR PROTECTION PANEL- A
EXCITATION TRANSFORMER THERMAL OVERLOAD (49ET1) 3I>
3
15
TA14
7500 / 5A, 0.5, 30 VA
SPARE
3
5
BTG - ELECTRICAL DETAILS OF GENERATOR :-
PURCHASER
SICHUAN MECHANICAL EQUIPMENT IMPORT – EXPORT CO. LTD. (SCMEC)
BARGAINOR
SHANGHAI ELECTRIC POWER GENERATION CO. LTD. GENERATOR PLANT
DESIGN UNIT
SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE (SWEPDI)
6
BTG - ELECTRICAL DETAILS OF GENERATOR :DESCRIPTION
UNIT
DESIGN VALUE
SPECS AND MODE GENERATOR MODEL
QFSN-660-2
RATED CAPACITY SN
MVA
776
RATED POWER PN
MW
660
RATED POWER FACTOR COSΦN
0.85 (LAG)
RATED VOLTAGE UN
KV
22
RATED CURRENT IN
A
20377
RATED FREQUENCY FN
HZ
50
RATED ROTATION SPEED NN
RPM
3000
RATED EXCITATION VOLTAGE UFN
V
494
RATED EXCITATION CURRENT IFN/ NOLOAD EXCITATION CURRENT IFOZ
A
4690/1497
STATOR WINDING CONNECTION MODE
YY
COOLING MODE
WATER, H2, H2
VENTILATION MODE
TAKE GAS FROM THE AIR GAP
EXCITATION MODE
STATIC EXCITATION
7
BTG - ELECTRICAL DETAILS OF GENERATOR :DESCRIPTION
UNIT
DESIGN VALUE
PARAMETER PROPERTY DC RESISTANCE FOR EACH PHASE OF THE STATOR （75℃）
W
1.447×10
DC RESISTANCE FOR WINDING OF THE ROTOR （75℃）
W
0.1004
A
ΜF
0.229
B
ΜF
0.229
C
ΜF
0.229
SELF INDUCTANCE OF THE ROTOR WINDING
H
0.762
DIRECT AXIS SYNCHRO REACTANCE XD
%
226
HORIZONTAL AXIS SYNCHRO REACTANCE XQ
%
220
DIRECT AXIS TRANSIENT VALUE) X'DU
(NON-SATURATED
%
31.3
DIRECT AXIS TRANSIENT REACTANCE (SATURATED VALUE)X'D
%
27.5
HORIZONTAL AXIS TRANSIENT REACTANCE (NON-SATURATED VALUE) X'QU
%
46
HORIZONTAL AXIS TRANSIENT REACTANCE (SATURATED VALUE)X'Q
%
40.5
-3
GROUND CAPACITANCE FOR EACH PHASE OF THE STATOR
REACTANCE
8
BTG - ELECTRICAL DETAILS OF GENERATOR :-
DESCRIPTION
UNIT
DESIGN VALUE
PARAMETER PROPERTY DIRECT AXIS SUPER-TRANSIENT REACTANCE (NON-SATURATED VALUE) X"DU
%
23.2
DIRECT AXIS VALUE)X"D
%
21.4
(NON-
%
22.8
HORIZONTAL AXIS SUPER-TRANSIENT REACTANCE (SATURATED VALUE) X"Q
%
20.9
NEGATIVE SEQUENCE REACTANCE (NON-SATURATED VALUE) X2U
%
23
NEGATIVE SEQUENCE REACTANCE (SATURATED VALUE) X2
%
21.2
ZERO SEQUENCE REACTANCE (NON-SATURATED VALUE) XOU
%
10.7
ZERO SEQUENCE REACTANCE (SATURATED VALUE)X0
%
10.2
DIRECT AXIS OPEN CIRCUIT TRANSIENT TIME CONSTANT T'DO
S
8.73
HORIZONTAL AXIS OPEN CIRCUIT TRANSIENT TIME CONSTANT T'QO
S
0.97
DIRECT AXIS SHORT CIRCUIT TRANSIENT TIME CONSTANT T'D
S
1.065
SUPER-TRANSIENT
REACTANCE
HORIZONTAL AXIS SUPER-TRANSIENT SATURATED VALUE) X"QU
(SATURATED
REACTANCE
9
BTG - ELECTRICAL DETAILS OF GENERATOR :DESCRIPTION
UNIT
DESIGN VALUE
PARAMETER PROPERTY HORIZONTAL AXIS SHORT CIRCUIT TRANSIENT TIME CONSTANT T'Q
S
0.179
DIRECT AXIS OPEN CONSTANT T"DO
TIME
S
0.045
HORIZONTAL AXIS OPEN CIRCUIT TRANSIENT TIME CONSTANT T"QO
S
0.068
DIRECT AXIS SHORT CIRCUIT SUPER TRANSIENT TIME CONSTANT T"D
S
0.035
HORIZONTAL AXIS SHORT CIRCUIT TRANSIENT TIME CONSTANT T"Q
S
0.035
DE-EXCITATION TIME CONSTANT TDM
S
3
FLYWHEEL MOMENT GD2
T-M2
41
CIRCUIT
TRANSIENT
SUPER
SHORT CIRCUIT RATIO SCR
0.518
STEADY STATUS NEGATIVE SEQUENCE CURRENT I2
%
8
TRANSIENT STATUS CURRENTI22T
S
8
NEGATIVE
SEQUENCE
10
BTG - ELECTRICAL DETAILS OF GENERATOR :-
DESCRIPTION
UNIT
DESIGN VALUE
PARAMETER PROPERTY ALLOWABLE FREQUENCY DEVIATION
+3 ±%
-5
ALLOWABLE STATOR VOLTAGE DEVIATION
±%
5
DE-EXCITATION ASYNCHRONOUS RUN CAPABILITY
MW
DE-EXCITATION ASYNCHRONOUS RUNTIME
MIN
SEE 4.2.13.4
LEADING PHASE RUN CAPABILITY
MW
660
LEADING PHASE RUNTIME (H FOR RUN HOUR)
H
0.95PF (ADVANCE) LONG TERM CONTINUOUS RUN
THF TELEPHONE HARMONIC FACTOR
%
KU VOLTAGE WAVEFORM SINUS DISTORTION RATE KU
%
THREE PHASE SHORT CIRCUIT STEADY STATUS CURRENT
%
162
PHASE-NEUTRAL POINT
%
584
PHASE-PHASE
%
407
THREE PHASE
%
416
TRANSIENT STATUS SHORT CIRCUIT CURRENT EFFECTIVE (AC COMPONENT)
11
BTG - ELECTRICAL DETAILS OF GENERATOR :DESCRIPTION
UNIT
DESIGN VALUE
PARAMETER PROPERTY SUB-TRANSIENT STATUS SHORT CIRCUIT EFFECTIVE VALUE (AC COMPONENT)
CURRENT
PHASE-NEUTRAL POINT
%
633
PHASE-PHASE
%
453
THREE PHASE
%
520
THREE PHASE SHORT CIRCUIT MAXIMUM CURRENT VALUE (INCLUDING DC COMPONENT PEAK VALUE)
%
1200
PHASE-PHASE SHORT CIRCUIT MAXIMUM ELECTROMAGNETIC TORSION
T.M
2130
ROTOR AXIAL VOLTAGE
V
BEARING INSULATION RESISTANCE NORMAL/MINIMUM VALUE
MW
MAXIMUM ALLOWABLE OVER-SPEED
%
120
OUT OF STEP POWER
MW
1260
GENERATOR STATUS RUN CAPABILITY
S ALLOWING 10000TIMES MACHINE START/STOP.
PEAK ADJUSTMENT CAPABILITY GENERATOR SERVICE LIFE
YEAR
30
NOISE
DB
90
12
BTG - ELECTRICAL DETAILS OF GENERATOR :-
DESCRIPTION
UNIT
DESIGN VALUE
VIBRATION VALUE CRITICAL SPEED (FIRST ORDER)
R/MIN
690
CRITICAL SPEED (SECOND ORDER)
R/MIN
1935
CRITICAL SPEED BEARING VIBRATION VALUE VERTICAL
MM
HORIZONTAL
MM
BEARING VIBRATION VALUE IN CASE OF OVER-SPEED VERTICAL
MM
HORIZONTAL
MM
BEARING VIBRATION VALUE IN CASE OF RATED ROTATION SPEED VERTICAL
MM
HORIZONTAL
MM
CRITICAL SPEED AXIS VIBRATION VALUE VERTICAL
MM 13
BTG - ELECTRICAL DETAILS OF GENERATOR :-
DESCRIPTION
UNIT
DESIGN VALUE
VIBRATION VALUE HORIZONTAL
MM
AXIS VIBRATION VALUE IN CASE OF OVER-SPEED VERTICAL
MM
HORIZONTAL
MM
AXIS VIBRATION VALUE IN CASE OF RATED ROTATION SPEED VERTICAL
MM
HORIZONTAL
MM
FV STATOR WINDING TERMINAL VIBRATION FREQUENCY
HZ
STATOR WINDING TERMINAL VIBRATION AMPLITUDE VALUE MM AXIAL TORSIONAL FREQUENCY
≤0.1（1.0 UN NO-LOAD OR 1.0 I N SHORT CIRCUIT. ）
HZ 14
BTG - ELECTRICAL DETAILS OF GENERATOR :-
DESCRIPTION
UNIT
DESIGN VALUE
LOSS AND EFFICIENCY ( UNDER RATED CONDITIONS) STATOR WINDING COPPER LOSS QCU1
KW
1803
STATOR IRON LOSS QFE
KW
637
EXCITATION LOSS QCU2
KW
2208
SHORT CIRCUIT QKD
KW
1055
KW
1607
ADDITIONAL LOSS
MECHANICAL LOSS QM EXCITATION MACHINE EQUIPMENT LOSS
AND
KW
TOTAL LOSS ΣQ
KW
7310
FULL LOAD EFFICIENCY Η
%
98.9
15
BTG - ELECTRICAL DETAILS OF GENERATOR :-
DESCRIPTION
UNIT
DESIGN VALUE
INSULATION GRADE AND TEMPERATURE STATOR WINDING INSULATION GRADE WINDING OUTLET WATER TEMPERATURE STATOR WINDING THA WORK CONDITIONS
F UNDER ℃
WINDING OUTLET WATER TEMPERATURE UNDER STATOR WINDING T-MCR WORK CONDITIONS
℃
WINDING OUTLET WATER TEMPERATURE UNDER STATOR WINDING VWO WORK CONDITIONS
℃
INTERLAYER TEMPERATURE UNDER STATOR WINDING THA WORK CONDITIONS
℃
INTERLAYER TEMPERATURE UNDER STATOR WINDING T-MCR WORK CONDITIONS
℃
INTERLAYER TEMPERATURE UNDER STATOR WINDING VWO WORK CONDITIONS
℃
STATOR IRON CORE INSULATION GRADE
74
79
F 16
BTG - ELECTRICAL DETAILS OF GENERATOR :-
DESCRIPTION
DESIGN VALUE
UNIT
INSULATION GRADE AND TEMPERATURE
HOTTEST POINT TEMPERATURE UNDER STATOR IRON CORE THA WORK CONDITIONS
℃
HOTTEST POINT TEMPERATURE UNDER STATOR IRON CORE T-MCR WORK CONDITIONS
℃
TEMPERATURE UNDER STATOR TERMINAL STRUCTURE PART THA WORK CONDITIONS
℃
TEMPERATURE UNDER STATOR TERMINAL STRUCTURE PART T-MCR WORK CONDITIONS
℃
TEMPERATURE UNDER STATOR TERMINAL STRUCTURE PART VWO WORK CONDITIONS
℃
88
ROTOR WINDING INSULATION GRADE TEMPERATURE UNDER ROTOR WINDING THA WORK CONDITIONS (RESISTANCE METHOD) TEMPERATURE UNDER ROTOR WINDING T-MCR WORK CONDITIONS (RESISTANCE METHOD)
F ℃
92 ℃ 17
BTG - ELECTRICAL DETAILS OF EXCITATION TRANSFORMER :-
DESCRIPTION
UNIT
DESIGN VALUE
EXCITAION TRANSFORMER TYPE
SINGLE PHASE DRY TYPE
MODEL CAPACITY
KVA
MANUFACTURER
3×2950 JINPAN/SHUNTE
RATED VOLTAGE RATED VOLTAGE PRIMARY PRIMARY
KV
22
V 1060
FREQUENCY PHASE NO. CONNECTION GROUP CATEGORY
HZ
50 3 Ｙ/△-11
TERMINAL LEAD-OUT AND GROUNDING MODE INSULATION GRADE
F 18
BTG - ELECTRICAL DETAILS OF EXCITATION TRANSFORMER :-
DESCRIPTION
UNIT
DESIGN VALUE
EXCITAION TRANSFORMER INSULATION WITHSTAND VOLTAGE
KV
IMPACT VOLTAGE
KV
HIGH SIDE
125
LOW SIDE HIGH SIDE
KV
LOW SIDE
50
PROTECTION GRADE
IP23
COOLING MODE
AN/AF
LOSS
COPPER LOSS
KW
26
IRON LOSS
KW
14
LOSS ADDITIONAL LOSS
KW
9
LOSS TOTAL LOSS
KW
49
EFFICIENCY
％
99.8 19
BTG - ELECTRICAL DETAILS OF EXCITATION TRANSFORMER :-
DESCRIPTION
UNIT
DESIGN VALUE
EXCITAION TRANSFORMER VOLTAGE REGULATION
％
±5
IMPEDANCE VOLTAGE
％
8
POSITIVE SEQUENCE IMPEDANCE
％
8
ZERO SEQUENCE IMPEDANCE
％
7.2
HIGH VOLTAGE WINDING RESISTANCE
Ω
3×0.1138
EXCITATION CURRENT
A
0.9
NOISE LEVEL
DBA
70
OVERLOAD CAPACITY OVERLOAD CAPACITY
KVA
1.1 LONG TERM
TRANSFORMER TEMPERATURE SIGNAL
I SECTION OVER TEMPERATURE ALARM II SECTION OVER TEMPERATURE TRIPPING
TRANSFORMER MAXIMUM ALLOWABLE TEMPERATURE RISE
100K
EXTERNAL SIZE (L×W×H)
MM
3400×1520×2950
TRANSPORT SIZE (L×W×H)
MM
4100×2600×2950
WEIGHT
T
19.6
20
BTG - ELECTRICAL DETAILS OF EXCITATION POWER CABINET :-
DESCRIPTION
UNIT
DESIGN VALUE
EXCITATION POWER CABINET TYPE THYRISTOR POWER ELEMENT RATED VOLTAGE
V
RATED CURRENT
A
2075
REVERSE PEAK VOLTAGE
V
4200
RATED CURRENT
A
1700
COOLING MODE
FORCE WIND COOLING
ELEMENT NO. SERIES CONNECTIONS FOR EACH CABINET AND EACH BRIDGE ARM
PCS
1
PARALLEL CONNECTION BRANCH NO. FOR EACH CABINET AND EACH BRIDGE ARM
PCS
6
RECTIFICATION CABINET NOISE
DB
≤65DB
H
45000
BLOWER FAN AVERAGE NO-FAULT TIME POWER CABINET NO.
5
CURRENT SHARING FACTOR
0.95
Voltage sharing factor
21
BTG - ELECTRICAL DETAILS OF EXCITATION POWER CABINET :-
DESCRIPTION
UNIT
DESIGN VALUE
MAGNETIC FIELD BREAKER RATED VOLTAGE
V
2000
RATED CURRENT RATED CURRENT
A
6000
BREAKING CURRENT
A
75000
CONTROL VOLTAGE (DC) MAX. ARC VOLTAGE（ABOVE 2000V）
VD.C
220
V
2800
MANUFACTURER
ABB
MODEL
HPB60M-82S
22
BTG - ELECTRICAL DETAILS OF EXCITATION POWER CABINET :-
DESCRIPTION
UNIT
DESIGN VALUE
AVR PROPRTY VOLTAGE REGULATION
％
30%～110% UG0
MANUAL REGULATION SCOPE
％
10%IF0～110% IFN
STATIC DIFFERENCE RATE
％
±1
TRANSITION STATUS RESOLUTION
MS
SINGLE TIME RECORD LENGTH
S
TOTAL RECORD LENGTH
S
1000
RISE TIME
S
≤0.04
CONTROL PERIOD
MS
SAMPLING MODE PHASE FREQUENCY MARGIN AMPLITUDE FREQUENCY MARGIN CONTROL RULE
AC °
≥40°
DB
≥6DB PID
MANUFACTURER
23
BTG - ELECTRICAL DETAILS OF EXCITATION POWER CABINET :-
DESCRIPTION
UNIT
DESIGN VALUE
EXCITATION INITIATING CIRCUIT PARAMETER EXCITATION INITIATING VOLTAGE
V/AC
415
EXCITATION INITIATING CURRENT
A
150
KVA
65
MJ
5
EXCITATION INITIATING POWER WASTE ROTOR OVER VOLTAGE PROTECTION OVER VOLTAGE NON LINEAR RESISTANCE CAPACITY OVER VOLTAGE PROTECTION ACTION VOLTAGE VALUE
4UFN~6 UFN
24
BTG - ELECTRICAL
DETAILS OF NGT CABINET :-
QUANTITY TYPE & SPECIFICATION
UNIT UNIT # 1
UNIT # 2
UNIT # 3
TOTAL
1
1
1
3
SINGLE PHASE ISOLATOR: 22KV / 400A NGT: 22/0.22KV, 50KVA
RESISTANCE: 0.4Ω, 50KW CT OF NGT SECONDARY WIRING: 500/5A, 5P20
SET
CT OF NGT PRIMARY WIRING: 5/5A, 0.5 25
BTG - ELECTRICAL
DETAILS OF PT / LA CABINET :-
QUANTITY TYPE & SPECIFICATION
RN4 - 22, 0.5A Y5W1 - 24 / 61.6
UNIT
SET
UNIT # 1
UNIT # 2
UNIT # 3
TOTAL
1
1
1
3
22/√3, 0.11/√3, 0.11/√3, 0.11/3 KV 0.2/3P/3P, 60VA SEMI-INSULATING
22/√3, 0.11/√3, 0.11/√3, 0.11/3 KV 0.2/3P/3P, 60VA SEMI-INSULATING
22/√3, 0.11/√3, 0.11/3, 0.11/3 KV 0.2/3P/3P, 60VA FULL-INSULATING
26
BTG - ELECTRICAL DETAILS OF GENERATOR PROTECTION:SR.NO.
GENERATOR PROTECTION
1
GENERATOR DIFFERENTIAL PROTECTION
2
VOLTAGE RESTRAINED OVER CURRENT PROTECTION
3
GENERATOR BACK-UP IMPEDANCE
4
STATOR EARTH FAULT 95% & 100% PROTECTION
PROTECTION CODE 87G 51VG） 21G 64G1, 64G2
A)
GENERATOR STATOR 95% EARTHING PROTECTION
64G1 (ZERO SEQUENCE VOLTAGE THEORY)
B)
GENERATOR STATOR 100％ EARTHING PROTECTION
64G2 (THIRD-HARMONIC THEORY)
5
STATOR INTER-TURN FAULT PROTECTION
95G
6
ASYMMETRIC NEGATIVE PHASE SEQUENCE OVER CURRENT PROTECTION
46G
7
SYMMETRICAL THERMAL OVERLOAD PROTECTION
49G）
8
OVER/UNDER VOLTAGE PROTECTION
59/27G
9
OVER/UNDER FREQUENCY PROTECTION
81G
10
LOSS OF EXCITATION PROTECTION
40G
27
BTG - ELECTRICAL DETAILS OF GENERATOR PROTECTION:-
SR.NO
GENERATOR PROTECTION
PROTECTION CODE
11
REVERSE POWER PROTECTION
32G
12
LOW FORWARD POWER PROTECTION
37G
13
GENERATOR OUT OF STEP PROTECTION
78G
14
OVER EXCITATION PROTECTION
61G
15
GENERATOR BACK-ENERGIZATION PROTECTION
51BEG
16
GENERATOR ROTOR EARTH FAULT PROTECTION
64F1、64F2
17
STARTUP/SHUTDOWN PROTECTION
59G
18
GENERATOR COOLING WATER-LOSS PROTECTION
30G
19
HEAT ENGINEERING PROTECTION
20
ET INSTANTANEOUS OVERCURRENT PROTECTION
（30T） 50SET 28
BTG - ELECTRICAL DETAILS OF GENERATOR PROTECTION:-
SR.NO
GENERATOR PROTECTION
PROTECTION CODE
21
ET OVERCURRENT PROTECTION
51ET
22
ET EXCITATION WINDING THERMAL OVERLOAD PROTECTION
49ET
23
ET WINDING TEMPERATURE PROTECTION
ET26W
24
CT, VT SUPERVISION PROTECTION
97，60
25
UNIT EMERGENCE TRIPPING INTERFACE
26
EXCITATION SYSTEM FAULT TRIPPING INTERFACE
27
400KV BREAKER OUR OF ORDER TRIPPING INTERFACE
29
BTG - ELECTRICAL SLD FOR GENERATOR AND GEN. PROTECTION & METERING:TO GT & UT 22 KV IPBD TA9:400 / 5A 5P20 60VA
GPP - A
TA10:400 / 5A 5P20 60VA TA11:400 / 5A 0.5 30VA
TA8:25000 / 5A 5P40 60VA
IPBD
TA7:25000 / 5A 5P40 60VA
GPP - B
GTP DC ENB
PT / LA CABINET
AVR
TA12:7500 / 5A 5P20 60VA
CABLE
GPP – A, GEMP GPP – B - GFR
GTP & AVR AVR
TA13:7500 / 5A 5P20 60VA
GEN
-
1060V GPP - A
TA5:25000 / 5A 0.2 100VA
GPP - B
+ ET
GPP – B, GTP & AVR
TA6:25000 / 5A 0.2 100VA
GPP - A
GPP - B GPP - A SPARE
TA14:7500 / 5A 0.5 30VA
TA4:25000 / 5A 0.2S 100VA
GEMP
TA3:25000 / 5A 5P40 60VA
GPP - B
TA2:25000 / 5A 5P40 60VA
GPP - A
TA1:25000 / 5A 5P40 60VA
AC ENB
TO GEN. & UT PROT. PANEL USING FOR OVERALL DIFFERENTIAL PROTECTION
GTP TO GEN. SHAFT
GPP – A GPP – B
GPP – A, GPP – B - GFR
N.G.T.
415 V MCC TA0: 5 / 5A 0.5 30VA
GFR
EARTHING
30
BTG - ELECTRICAL
31
VOTE OF THANKS
32
