Gen Settings 18.03.14

SPML-S10IRJ01-DD-EE-01-A DSGN VS CHKD MN

PROJECT: 160 MW CCPP, STAGE-III, RAMGARH TITLE: TITLE: RELAY RELAY SETTI SETTING NG CALCU CALCULATI LATION ON AND COORDIN COORDINATIO ATION N FOR FOR GTG,STG GTG,STG & UAT. UAT. CLIENT CLIENT : RAJASTHA RAJASTHAN N RAJYA VIDYUT VIDYUT UTPADA UTPADAN N NIGAM LIMITE LIMITED D 123.7MW GAS TURBINE GENERATOR PROTECTIONS

RELAY TYPE : 7UM62

Relay Details Relay Type Make Rated current

7UM62 SIEMENS 5A

GENERATOR DETAILS: Rated Active Power Rated Apparent Power Rated Voltage (UNmach) Rated Current (INmach) Power Factor Rated Frequency X"d (Sub Transient Reactance) X'd (Transient Reactance) Xd (Direct Axis Reactance) Neutral Grounding Transformer Primary Neutral Grounding Transformer Secondary NGT Secondary Reactor Value Neutral Grounding Transformer Capacity Negative Sequence Capability I2S I2^2t

= = = = = = = = = = = = = = =

123.7 145.5 11 7638.54 0.85 50 0.15 0.23 1.941 11000 220 0.424 25 0.08 8

= = =

11000 110 100

V V

CT Secondary CTR

= = =

8500 5 1700

A A

GENERATOR TRANSFORMER DETAILS: Rated Capacity HV Voltage Rating LV Voltage Rating % Impedance

= = = =

150 230000 11000 12.50

GENERATOR TRANSFORMER CT DETAILS: HV Side CT Primary HV Side CT Secondary HV Side Neutral CT Primary HV Side Neutral CT Secondary

= = = =

600 1 600 1

GENERATOR PT DETAILS: PT Primary (UN VT prim) PT Secondary PTR

GENERATOR CT DETAILS: CT Primary (IN CT prim)

NEUTRAL GROUNDING TRANSFORMER HV Side LV Side Neutral CT Primary Neutral CT Secondary Load Resistance Rprimary Full Load Current CT Secondary Current

MW MVA kV A lag

8.00 Sec.

%

For machines in Unit transformer connection the evaluation of the displacement voltage is sufficient. Displacement Voltage:

Page 1 of 25

MVA V V 0.125

V V A A   A A A

95% STATOR EARTH FAULT PROTECTION (64G)

110.00 5.5 6.05 6

Hz P.U P.U P.U V V Ohms KVA %

11000X√�

V V V V

=

300 A

230 kV 11 kV

A A A A

= 11000 = 220 = 400 = 5 = 0.424 = 36.6 = 7638.54 = 7638.54x(5/8500) = 4.49

Max Open Delta Voltage = With 5% of setting = With 110% of margin setting = U0> =

11000 V

(11000/√3)

6351

PROJECT: 160 MW CCPP, STAGE-III, RAMGARH TITLE: TITLE: RELAY RELAY SETTI SETTING NG CALCU CALCULATI LATION ON AND COORDIN COORDINATIO ATION N FOR FOR GTG,STG GTG,STG & UAT. UAT. CLIENT CLIENT : RAJASTHA RAJASTHAN N RAJYA VIDYUT VIDYUT UTPADA UTPADAN N NIGAM LIMITE LIMITED D 123.7MW GAS TURBINE GENERATOR PROTECTIONS

SPML-S10IRJ01-DD-EE-01-A DSGN VS CHKD MN RELAY TYPE : 7UM62

100-% STATOR EARTH FAULT PROTECTION WITH 20HZ VOLTAGE INJECTION (64G) THE FACTOR R SEF = ü2Transf x(üDivider /üMinCT)

for üTransf =üNeutral Transf

= (UNprim /√3)/(UNsec) = (11000/1.7 (11000/1.732)/( 32)/(220) 220) = 28.87

The transformation ratio of the miniature CT is 400/5A

üDivider = 5/2 = 2.5

üMinCT = 400/5 = 80 = (28.87 (28.87^2) ^2)x(2 x(2.5/ .5/80) 80) THE FACTOR R SEF = 27.000 If for the Trip stage R<< a generator-side fault resistance of 1000 is chosen A resistance of R<< SEF TRIP = (100 (1000/ 0/27 27)) = 37.04  = 40  If for the Alarm stage R< a generator-side fault resistance of 3000 is chosen A resistance of R< SEF ALARM = (300 (3000/ 0/27 27)) = 111.11  = 120  THE EARTH CURRENT STAGE, SEF I>> = 0.2*(UNGen/RL)*(1/üMin CT) = 0.2x((1100 0.2x((11000/√3)/ 0/√3)/36.6) 36.6)x((1/ x((1/400/5 400/5)) )) = 0.434 A

IMPEDANCE PROTECTION PROTECTION (2 1) Maximunm load current setting: Rated current of Generator Max current at 95% voltage

= 7638.54 = 8041

A A

As this relay should not pickup for overload,120% safty factor is considered IMP I> = 6

Generator Transformer back-up impedance protection setting: Gene Genera rato torr Trans ransfo form rmer er Impe Impeda danc nce e at 1100 11000V 0V base base Generator Transformer Impedance x 0.8 Secondary Secondary Impedance Impedance

Line back-up impedance protection setting: Line positive sequence impedance/Km Line Voltage Line Length

System Impedance on 22000V base Total Impedance

Total Secondary Secondary Impedance Impedance

A

= = = = = = ZONE Z1 =

(110 11000x1 00x110 1000 00x0 x0.1 .125 25)/ )/((150x 150x10 1000 0000 000) 0) 0.101 Ohms (0.101x0.8) 0.081 Ohms 0.081x(CTR/ 0.081x(CTR/VTR) VTR) 0.081x 0.081x(17 (1700/ 00/100 100)) 1.000 Ohms

= = = = = = = = = = = ZONE Z2 =

0.075 Ohms 230000 V 210.000 km (0.0 (0.075 75x2 x210 10)) 15.724 Ohms (Imp. On 220000V base)x (11000x11000)/(230000x230000) 0.036 Ohms (L (Line Imp. + Transformer Imp.)x 1.1 (0.036 (0.036+0.1 +0.101) 01)x1. x1.1 1 0.151 Ohms 0.151x(CTR/ 0.151x(CTR/VTR) VTR) 3.000 Ohms

FACTOR UE = 72.17

Page 2 of 25


PROJECT: 160 MW CCPP, STAGE-III, RAMGARH TITLE: RELAY SETTING CALCULATION AND COORDINATION FOR GTG,STG & UAT. CLIENT : RAJASTHAN RAJYA VIDYUT UTPADAN NIGAM LIMITED 123.7MW GAS TURBINE GENERATOR PROTECTIONS

RELAY TYPE : 7UM62

LOSS OF EXCITATION (40) The reciprocal of secondary per unit synchronous direct reactance is,

1/Xdsec = (1/Xdmach)x(INmach/UNmach)x(UN VT prim/IN CT prim) = (1/1.941)x(7638.54/11000)x(11000/8500) = 0.46

CHAR 1 Muliplied by a safety factor of about 1.05, the setting value 1/Xdsec is,

= 0.490

CHAR 2 1/Xdsec in CHAR 2 is set to about 0.9 of CHAR 1

= 0.44

CHAR 3 is for dynsmic stability of the machine and is set between 1/Xd and 1/Xd'

1/Xd'sec = (1/Xd'mach)x(INmach/UNmach)x(UN VT prim/IN CT prim) = 3.907

CHAR 3 value1/xd CHAR. 3 situated approximately between the synchronous direct reactance xd and the transient reactance xd'. However, it should be greater than 1.

NEGATIVE SEQUENCE (OR) UNBALANCED LOAD (46) pickup thershold

Pickup Setting I2> = (I2 max prim/IN machine)x(IN machine/IN CT prim)

max. perm.(I2 max prim /IN machine) in permanent operation in our machine

= 8.00

%

= (8)x(7638.54/8500) % I2 =

Negative Sequence Factor K,

Ksec

=

Kprimaryx(IN Machine/IN CT prim)2

Kprimary = 8 sec. = 8x(7638.54/8500) sec. FACTOR K = 7.20

Time for Cool Down,

tcooldown

=

Kprimary/(I2 perm/IN)2

= 1250

sec.

GEN .POLE SLIPPING PROTECTION (OR) OUT-OF-STEP PROTECTION(78) The power swing rectance of the machine must be considered, which is approximately the transient reactance

Zb=X'd Zb = (X'd)x(kV2/MVA)x(CTR/VTR) Per unit Impedance (pu)

Zb

= = = = = = =

kV2 /MVA 11^2/145.53 0.831 Ohms 0.831x (CTR/PTR) 14.200 Ohms 14.2x0.23 3 Ohms

Thus ZC is set to 85% of the transformer impedance XSC .

ZC = 0.85 x XSC XSC = XSC prim x (kV2/MVA) x (CTR/VTR) = = = = = = ZC = =

Page 3 of 25

kV2 /MVA 11^2/150 0.807 Ohms 0.807x (CTR/PTR) 13.800 Ohms 1.725 0.85x1.725 1.000 Ohms



RELAY TYPE : 7UM62

Thus Za is decisive for the width of the power swing polygon

Za = 0.289 x Ztot Ztot = Zb + ZC = 4.000 Za = 1.00

Ohms

The covered system reactance should be 10,so

Zd = 10

Ohms

Zd-Zc = 9.00

Ohms

THERMAL OVERLOAD PROTECTION (49) K-FACTOR: The K-FACTOR refers to the secondary nominal current. The following applies for the conversion Imax prim

IN

CT prim

= 115% X Inmach = 1.15 X 7638.54 = 8784.32

A

= 8500

A

= Imax prim / IN CT prim

K-FACTOR

= 1.1

TIME CONSTANT ( τ): Set Default Value as Q ALARM (Θ ⁄ Θtrip):

= 600

Sec

Q ALARM (Θ ⁄ Θtrip) issues thermal warning prior to tripping & is given in % of the tripping temperature level. = 1/(K-FACTOR)2 = 1/(1.1)^2 = 90.0 %

I ALARM: This level is set in secondary amperes, and should be set equal to, or slightly less than, the permissible continuous current K-FACTOR IN sec. = IN sec = 5 A Kτ-FACTOR: Set Default Value as

= 1

I MAX THERM.:

= = = =

T EMERGENCY: Set Default Value as

3 X Nominal generator current 3 X Inmach X (IN CT Sec/IN CT Prim) 3 X 7638.54 X (5/8500) 13.48 A

= 100

Sec

TEMP. RISE I : ΘNsec = ΘNMach x (INprim/INmach)2 where,

ΘNsec = Machine temperature with nominal secondary current ΘNMach = Machine temperature with nominal machine current = 80 (Considered for Calculation) °C Inprim = Nominal primary current of the current transformers = 8500 A INMach = Nominal machine current A = 7638.54

= 80 X (8500/7638.54)^2 = 100.0 °C If the temperature input is used, the trip times change if the coolant temperature deviates from the internal reference temperature of 40 °C. The following formula can be used to calculate the trip time: (I/k.IN)2 + ((ΘK – 40 °C)/ (k 2 ⋅ ΘN)) - (Ipre/k ⋅ IN)2 t = τ . ln (I/k.IN)2 + ((ΘK – 40 °C)/ (k 2 ⋅ ΘN)) - 1 Therefore,

where,

ΘNsec

τ

k IN I Ipre ΘN ΘK

= = = = = = =

TIME CONSTANT K-FACTOR Nominal device current Actually flowing secondary current Previous load current Temperature with nominal current IN Coolant temperature input

The following trip times result for different ambient temperatures ΘK with a supposed load current of I = 1.5 IN Ipre = 0

Page 4 of 25



RELAY TYPE : 7UM62

with ΘK = 40 °C:

t

= 600 x ln

(1.5/1.1)2 + ((40 °C – 40 °C)/ (1.1 2 ⋅ 100 °C)) - 0 (1.5/1.1)2 + ((40 °C – 40 °C)/ (1.1 2 ⋅ 100 °C)) - 1

= 463

with ΘK = 80 °C:

t

Sec

= 600 x ln

(1.5/1.1)2 + ((80 °C – 40 °C)/ (1.1 2 ⋅ 100 °C)) - 0 (1.5/1.1)2 + ((80 °C – 40 °C)/ (1.1 2 ⋅ 100 °C)) - 1

= 366

with ΘK = 0 °C:

t

Sec

= 600 x ln

(1.5/1.1)2 + ((0 °C – 40 °C)/ (1.1 2 x 100 °C)) - 0 (1.5/1.1)2 + ((0 °C – 40 °C)/ (1.1 2 x 100 °C)) - 1

= 637

Sec

GTG MAIN-1 RELAY PANEAL (7UM62-GR1) SI.NO

FUNCTION

SETTING RANGE

RECOMMENDED SETTING

DIFFERENTIAL PROTECTION (87G)

1

Differential Protection

OFF,ON,Block relay for trip commands

ON

2

I-DIFF>

0.05..2.00 I/InO

0.20

I/InO

3

T I-DIFF>

0.00..60.00 sec; ∞

0.00

sec

4

I-DIFF>>

0.5..12.0 I/InO; ∞

6.00

I/InO

5

T I-DIFF>>

0.00..60.00 sec; ∞

0.00

sec

6

SLOPE 1

0.10..0.50

0.25

7

BASE POINT 1

0.00..2.00 I/InO

0.00

8

SLOPE 2

0.25..0.95

0.50

9

BASE POINT 2

0.00..10.00 I/InO

2.50

I/InO

10

I-ADD ON STAB.

2.00..15.00 I/InO

4.00

I/InO

I/InO


1

S/E/F PROT.


ON

2

U0>

2.0..125.0 V

6

V

3

T S/E/F

0.00..60.00 sec; ∞

0

sec

100-% STATOR EARTH FAULT PROTECTION WITH 20HZ VOLTAGE INJECTION (64G)

1

100% SEF-PROTN.


ON

2

R< SEF ALARM

20…700 Ohm

120

Ohm

3

R<< SEF TRIP

20…700 Ohm

40

Ohm

4

T SEF ALARM

0.00…60.00 sec; ∞

10.00

sec

5

T SEF TRIP

0.00…60.00 sec;∞

1.00

sec

6

SEF I>>

0.02…1.50A

0.43

A

7

U20MIN

0.3…15.0V

1.0V

V

8

I20MIN

5…40mA

10.00

mA

9

PHI ISEF

-60O...60O

0o

10

SEF Rps

0…700 Ohm

0

Ohm

11

RI-PARALLEL

20…700 Ohm;∞

∞

Ohm

1

ROTOR E/F


ON

2

RE< WARN

3.0..30.0 kOhm

10.00

kOhm

3

RE<< TRIP

1.0..5.0 kOhm

2.00

kOhm

4

T-WARN-RE<

0.00..60.00 sec; ∞

10.00

sec

5

T-TRIP-RE<<

0.00..60.00 sec; ∞

0.50

sec

ROTOR EARTH FAULT PROTECTION (64R)

Page 5 of 25



RELAY TYPE : 7UM62

REVERSE POWER PROTECTION (32)

1

REVERSE POWER


ON

2

P> REVERSE

30.00..-0.50 %

-1.930

%

3

T-SV-OPEN

0.00..60.00 sec; ∞

2.00

sec

4

T-HOLD

0.00..60.00 sec; ∞

0.00

sec

GENERATOR INTERTURN FAULT PROTECTION (59N)

1

Interturn protn

OFF/ON/Block relay

ON

2

U Interturn V>

0.3 .. 130.0 V

5.00

V

3

T-U Interturn V>

0.00 .. 60.00 sec; ∞

0.50

sec

4

Reset ratio

50 .. 95 %

80.00

%

DEAD MACHINE PROTECTION (OR) INADVERTENT ENERGIZATION (50)

1

INADVERT. EN.


ON

2

I STAGE

0.1..20.0 A; ∞

0.5

A

3

RELEASE U1<

10.0..125.0 V; 0

55

V

4

PICK UP T U1<

0.00..60.00 sec; ∞

5.00

sec

5

DROP OUT T U1<

0.00..60.00 sec; ∞

1.00

sec

ON

NEGATIVE SEQUENCE (OR) UNBALANCED LOAD (46)

1

UNBLANCED LOAD


2

I2>

3.0…30.0%

3

T WARN

0.00…60.00 sec; ∞

20

sec

2

FACTOR K

2.0…100.00 sec; ∞

7.2

sec

3

T COOL DOWN

0…50000 sec

1250.0

sec

4

I2>>

10…100%

60

%

5

T I2>>

0.00…60.00 sec; ∞

3.00

sec

1

UNDEREXCIT


ON

2

T SHRT Uex<

0.00…60.00 sec; ∞

0.50

3

EXCIT.VOLT.

ON,OFF

OFF

4

Uexcit<

0.50…8.00V

2.00

V

5

Umin

10.0…125.0V

25.0

V

6

1/Xd CHAR.1

0.25…3.00

0.49

7

ANGLE 1

50…120O

80O

8

T CHAR. 1

0.00…60.00 sec; ∞

10.00

9

1/Xd CHAR.2

0.25…3.00

0.44

10

ANGLE 2

50…120O

90O

11

T CHAR. 2

0.00…60.00 sec; ∞

10.00

12

1/Xd CHAR.3

0.25…3.00

1.10

13

ANGLE 3

50…120O

90O

14

T CHAR. 3

0.00…60.00 sec; ∞

0.30

1

UNDERVOLTAGE


ON

2

U<

10.0..125.0 V

99.0

V

3

T U<

0.00..60.00 sec; ∞

3.00

sec

4

U<<

10.0..125.0 V

88.0

V

5

T U<<

0.00..60.00 sec; ∞

0.50

sec

6

U< DOUT RATIO

1.01..1.20

1.05

%

LOSS OF EXCITATION (40)

sec

sec

sec

sec

UNDERVOLTAGE PROTECTION (27)

Page 6 of 25



RELAY TYPE : 7UM62

INVERSE TIME OVER CURRENT, WITH VOLTAGE CONTROL OR VOLTAGE RESTRAINT (51V)

1

O/C Ip


ON

2

Ip

0.10..4.00 A

1.0

3

TIME DIAL: TD

0.50..15.00; ∞

0.50

4

IEC CURVE

Normal Inverse,Very Inverse,Extremely Inverse

Normal Inverse

5

U<

10.0..125.0 V

88.00

1

O/U FREQUENCY


ON

2

f1 PICKUP (UNDER)

40.00..65.00 Hz

49.0

Hz

4

T f1

0.00..600.00 sec

0

sec

5

f2 PICKUP (UNDER)

40.00..65.00 Hz

47.5

Hz

7

T f2

0.00..600.00 sec

2.00

sec

9

f3 PICKUP (OVER)

40.00..65.00 Hz

51.0

Hz

10

T f3

0.00..600.00 sec

2.00

sec

9

f4 PICKUP (OVER)

40.00..65.00 Hz

52.5

Hz

10

T f4

0.00..600.00 sec

1.00

sec

11

THRESHOLD f4

Freq. prot. stage automatic,Freq. prot. stage overfreqency,Freq. prot. stage underfreqency

Freq. prot. stage automatic

12

Umin

10.0..125.0 V; 0

72.00

1

OVERVOLTAGE


ON

2

U>

30.0..170.0 V

116.0

3

T U>

0.00..60.00 sec; ∞

3.00

4

U>>

30.0..170.0 V

121.0

5

T U>>

0.00..60.00 sec; ∞

0.50

6

U> DOUT RATIO

0.90..0.99

0.95

7

VALUES U>

A

V

UNDER&OVER FREQUENCY (81)

V

OVERVOLTAGE PROTECTION (59)

V sec V sec

Voltage protection with UPhaseVoltage protection with UPhase,Voltage protection with Phase-Phase UPhase-earth.

OVERFLUXING PROTECTION (99)

U/f >

OFF,ON,Block relay for trip commands 1.00..1.20

1.10

3

T U/f >

0.00..60.00 sec; ∞

10

4

U/f >>

1.00..1.40

1.40

5

T U/f >>

0.00..60.00 sec; ∞

1

1

OVEREXC. PROT.

2

ON

sec

sec

IMPEDANCE PROTECTION (21)

IMP I>

OFF,ON,Block relay for trip commands 0.10...20.00 A

6.00

3

U< SEAL-IN

ON,OFF

ON

4

U<

10.0..125.0 V

88.00

5

T-SEAL-IN

0.10..60.00 sec

3.00

sec

6

T END

0.00..60.00 sec; ∞

2.00

sec

7

ZONE Z1

0.05..130.00 Ohm

1.00

Ohms

8

T-Z1

0.00..60.00 sec; ∞

0.10

sec

9

ZONE Z1B

0.05..65.00 Ohm

3.00

Ohms

10

T-Z1B

0.00..60.00 sec; ∞

∞

11

ZONE Z2

0.05..65.00 Ohm

3.00

Ohms

12

ZONE2 T2

0.00..60.00 sec; ∞

0.60

sec

13

POWER SWING

ON,OFF

OFF

1

IMPEDANCE PROT.

2

Page 7 of 25

ON A

V

sec



RELAY TYPE : 7UM62

GEN .POLE SLIPPING PROTECTION (OR) OUT-OF-STEP PROTECTION(78)

I1> RELEASE

OFF,ON,Block relay for trip commands 20…400 %

120

%

3

I2< RELEASE

5…100 %

20

%

4

Za

0.20…130.00

1.00

Ohms

5

Zb

0.10…130.00

3.00

Ohms

6

Zc

0.10…130.00

1.00

Ohms

7

Zd-Zc

0.00…130.00

9.00

Ohms

1

OUT-OF-STEP

2

O

ON

O

8

PHI POLYGON

60.0…90.0

9

REP CHAR.1

1…4

1

10

REP CHAR.2

1…8

4

11

T-HOLDIG

0.20…60.00 sec

20.00

sec

12

T-SIGNAL

0.02…0.15 sec

0.05

sec

1

BREAKER FAILURE

ON/OFF

ON

2

TRIP INTERN

OFF Start Breaker Failure with Bin.Outp.12 Start Breaker

Start Breaker Failure with CFC

3

CIRCUIT BREAKER I>

0.04-2.00A

0.2

4

TRIP TIMER

0.06-60sec

0.20

1

Ther. OVER LOAD

OFF / ON / Block relay for trip commands / Alarm Only

Alarm only

2

K-FACTOR

0.10..4.00

1.1

3

TIME CONSTANT

30..32000 sec

600.00

sec

4

Θ ALARM

70..100 %

90

%

5

I ALARM

0.50 .. 20.00 A

5.00

A

6

Kτ-FACTOR

1.0..10.0

1.00

7

I MAX THERM

2.50 .. 40.00 A

13.48

8

T EMERGENCY

10..15000 sec

100.00

sec

9

TEMP. RISE I

40..200 °C

100.00

°C

10

TEMP. RISE I

104..392 °F

212.00

°F

11

TEMP. INPUT

Disabled / 4-20 mA / Field bus / Temp. of RTD 1

Disabled

12

TEMP. SCAL.

40..300 °C

100.00

°C

13

TEMP. SCAL.

104..572 °F

212.00

°F

90.0

BREAKER FAIL PROTECFTION 50BF

A sec

THERMAL OVERLOAD PROTECTION (49)

Page 8 of 25

A



RELAY TYPE : 7UM62

GTG MAIN-2 RELAY PANEAL (7UM62-GR2) SI.NO

FUNCTION

SETTING RANGE

RECOMMENDED SETTING


1



ON

2

I-DIFF>

0.05..2.00 I/InO

0.20

I/InO

3

T I-DIFF>

0.00..60.00 sec; ∞

0.00

sec

4

I-DIFF>>

0.5..12.0 I/InO; ∞

6.00

I/InO

5

T I-DIFF>>

0.00..60.00 sec; ∞

0.00

sec

6

SLOPE 1

0.10..0.50

0.25

7

BASE POINT 1

0.00..2.00 I/InO

0.00

8

SLOPE 2

0.25..0.95

0.50

9

BASE POINT 2

0.00..10.00 I/InO

2.50

I/InO

10

I-ADD ON STAB.

2.00..15.00 I/InO

4.00

I/InO

1

IMPEDANCE PROT.


ON

2

IMP I>

0.10...20.00 A

6.00

3

U< SEAL-IN

ON,OFF

ON

4

U<

10.0..125.0 V

88.00

5

T-SEAL-IN

0.10..60.00 sec

3.00

sec

6

T END

0.00..60.00 sec; ∞

2.00

sec

7

ZONE Z1

0.05..130.00 Ohm

1.00

Ohms

8

T-Z1

0.00..60.00 sec; ∞

0.10

sec

9

ZONE Z1B

0.05..65.00 Ohm

3.00

Ohms

10

T-Z1B

0.00..60.00 sec; ∞

∞

11

ZONE Z2

0.05..65.00 Ohm

3.00

Ohms

12

ZONE2 T2

0.00..60.00 sec; ∞

0.60

sec

13

POWER SWING

ON,OFF

OFF

1

ROTOR E/F


ON

2

RE< WARN

3.0..30.0 kOhm

10.00

kOhm

3

RE<< TRIP

1.0..5.0 kOhm

2.00

kOhm

4

T-WARN-RE<

0.00..60.00 sec; ∞

10.00

sec

5

T-TRIP-RE<<

0.00..60.00 sec; ∞

0.50

sec

I/InO


A

V

sec



I1> RELEASE

OFF,ON,Block relay for trip commands 20…400 %

120

%

3

I2< RELEASE

5…100 %

20

%

4

Za

0.20…130.00

1.00

Ohms

5

Zb

0.10…130.00

3.00

Ohms

6

Zc

0.10…130.00

1.00

Ohms

7

Zd-Zc

0.00…130.00

9.00

Ohms

1

OUT-OF-STEP

2

O

ON

O

8

PHI POLYGON

60.0…90.0

9

REP CHAR.1

1…4

1

10

REP CHAR.2

1…8

4

11

T-HOLDIG

0.20…60.00 sec

20.00

sec

12

T-SIGNAL

0.02…0.15 sec

0.05

sec

Page 9 of 25

90.0



RELAY TYPE : 7UM62


1

INADVERT. EN.


ON

2

I STAGE

0.1..20.0 A; ∞

0.5

A

3

RELEASE U1<

10.0..125.0 V; 0

55

V

4

PICK UP T U1<

0.00..60.00 sec; ∞

5.00

sec

5

DROP OUT T U1<

0.00..60.00 sec; ∞

1.00

sec

ON


1

UNBLANCED LOAD


2

I2>

3.0…30.0%

3

T WARN

0.00…60.00 sec; ∞

20

sec

2

FACTOR K

2.0…100.00 sec; ∞

7.2

sec

3

T COOL DOWN

0…50000 sec

1250.0

sec

4

I2>>

10…100%

60

%

5

T I2>>

0.00…60.00 sec; ∞

3.00

sec

1

UNDEREXCIT


ON

2

T SHRT Uex<

0.00…60.00 sec; ∞

0.50

3

EXCIT.VOLT.

ON,OFF

OFF

4

Uexcit<

0.50…8.00V

2.00

V

5

Umin

10.0…125.0V

25.0

V

6

1/Xd CHAR.1

0.25…3.00

0.49

7

ANGLE 1

50…120O

80O

8

T CHAR. 1

0.00…60.00 sec; ∞

10.00

9

1/Xd CHAR.2

0.25…3.00

0.44

10

ANGLE 2

50…120O

90O

11

T CHAR. 2

0.00…60.00 sec; ∞

10.00

12

1/Xd CHAR.3

0.25…3.00

1.10

13

ANGLE 3

50…120O

90O

14

T CHAR. 3

0.00…60.00 sec; ∞

0.30

1

UNDERVOLTAGE


ON

2

U<

10.0..125.0 V

99.0

V

3

T U<

0.00..60.00 sec; ∞

3.00

sec

4

U<<

10.0..125.0 V

88.0

V

5

T U<<

0.00..60.00 sec; ∞

0.50

sec

6

U< DOUT RATIO

1.01..1.20

1.05

%


sec

sec

sec

sec



1

O/C Ip


ON

2

Ip

0.10..4.00 A

1.0

3

TIME DIAL: TD

0.50..15.00; ∞

0.50

4

IEC CURVE


Normal Inverse

5

U<

10.0..125.0 V

88.00

Page 10 of 25

A

V



RELAY TYPE : 7UM62


1

O/U FREQUENCY


ON

2

f1 PICKUP (UNDER)

40.00..65.00 Hz

49.0

Hz

4

T f1

0.00..600.00 sec

0

sec

5

f2 PICKUP (UNDER)

40.00..65.00 Hz

47.5

Hz

7

T f2

0.00..600.00 sec

2.00

sec

9

f3 PICKUP (OVER)

40.00..65.00 Hz

51.0

Hz

10

T f3

0.00..600.00 sec

2.00

sec

9

f4 PICKUP (OVER)

40.00..65.00 Hz

52.5

Hz

10

T f4

0.00..600.00 sec

1.00

sec

11

THRESHOLD f4



12

Umin

10.0..125.0 V; 0

72.00

1

OVERVOLTAGE


ON

2

U>

30.0..170.0 V

116.0

3

T U>

0.00..60.00 sec; ∞

3.00

4

U>>

30.0..170.0 V

121.0

5

T U>>

0.00..60.00 sec; ∞

0.50

6

U> DOUT RATIO

0.90..0.99

0.95

7

VALUES U>

V


V sec V sec

Voltage protection with UPhaseVoltage protection with UPhase,Voltage protection with Phase-Phase UPhase-earth.


1

OVEREXC. PROT.


ON

2

U/f >

1.00..1.20

1.10

3

T U/f >

0.00..60.00 sec; ∞

10

4

U/f >>

1.00..1.40

1.40

5

T U/f >>

0.00..60.00 sec; ∞

1

1

REVERSE POWER


ON

2

P> REVERSE

30.00..-0.50 %

-1.930

%

3

T-SV-OPEN

0.00..60.00 sec; ∞

2.00

sec

4

T-HOLD

0.00..60.00 sec; ∞

0.00

sec

sec

sec



1

Interturn protn

OFF/ON/Block relay

ON

2

U Interturn V>

0.3 .. 130.0 V

5.00

V

3

T-U Interturn V>

0.00 .. 60.00 sec; ∞

0.50

sec

4

Reset ratio

50 .. 95 %

80.00

%

1

BREAKER FAILURE

ON/OFF

ON

2

TRIP INTERN

OFF Start Breaker Failure with Bin.Outp.12 Start Breaker


3

CIRCUIT BREAKER I>

0.04-2.00A

0.2

4

TRIP TIMER

0.06-60sec

0.20


Page 11 of 25

A sec



RELAY TYPE : 7UM62


1

Ther. OVER LOAD


Alarm only

2

K-FACTOR

0.10..4.00

1.1

3

TIME CONSTANT

30..32000 sec

600.00

sec

4

Θ ALARM

70..100 %

90

%

5

I ALARM

0.50 .. 20.00 A

5.00

A

6

Kτ-FACTOR

1.0..10.0

1.00

7

I MAX THERM

2.50 .. 40.00 A

13.48

8

T EMERGENCY

10..15000 sec

100.00

sec

9

TEMP. RISE I

40..200 °C

100.00

°C

10

TEMP. RISE I

104..392 °F

212.00

°F

11

TEMP. INPUT


Disabled

12

TEMP. SCAL.

40..300 °C

100.00

°C

13

TEMP. SCAL.

104..572 °F

212.00

°F

A

POWER SYSTEM DATA POWER SYSTEM DATA

50 Hz 60 Hz L1 L2 L3 L1 L3 L2 Direct connected to busbar Unit transformer connected YES NO

50 HZ

1

Rated frequency

2

PHASE SEQ

3

Scheme

4

ATEX100

5

factor R SEF

1.0..200.0

27.00

6

Temp unit

Degree Celsius Degree Fahrenheit

DEGREE CELCIUS

7

UN Generator

0.40..800.00 Kv

11

8

SN Generator

0.20..5000.00 MVA

145.53

Isolated Solid Earthed Isolated Solid Earthed YES NO 1..100000 A 1A 5A -5.00..5.00 °

L1 L2 L3 Unit transformer connected NO

Starpoint S1

10

Starpoint S2

15

STRPNT OBJ S1

16

IN PRI-1 SIDE-1

17

IN SEC-1 SIDE-1

18

CT ANGLE W0

19

FACTOR IEE1

20

STR PNT OBJ S2

21

IN PRI-1 SIDE-2

22

IN SEC-1 SIDE-2

23

FACTOR IEE2

1.0..100000.0

1

24

GRD TERM. IEE2

Terminal Q7 Terminal Q8

Q7

25

UNOM PRIMARY

0.10..400.00 kV

11

26

UNOM SECONDARY

100..125 V

110

27

UE CONNECTION

UE connected to neutral transformer UE connected to broken delta winding not connected UE connected to any VT UE connected to Rotor UE connected to Loading Resistor

UE connected to Loading Resistor

28

FACTOR UE

1.0..2500.0

72.17

29

UPH/UDELTA

1.00..3.00

1.732

30

T MIN TRIP CMD

0.01..32.00 sec

0.15

Note: 1) Address 0152 is set to Disable Since the System Scheme Configuration is Unit transformer connected. 2) In Thermal Overload Protection Only Alarm Stage is Enabled as per the protection scheme 3) Machines in Unit transformer connection the evaluation of the displacement voltage is sufficient for 95% Stator Earth Fault Protection (64G)

Page 12 of 25

MVA

ISOLATED

9

1.0..100000.0 YES NO 1..100000 A 1A 5A

KV

ISOLATED YES 8500

A

5

A

0 300 YES 8500

A

5

A

KV V

SEC

PROJECT: 160 MW CCPP, STAGE-III, RAMGARH TITLE: RELAY SETTING CALCULATION AND COORDINATION FOR GTG,STG & UAT. CLIENT : RAJASTHAN RAJYA VIDYUT UTPADAN NIGAM LIMITED

SPML-S10IRJ01-DD-EE-01-A VS DSGN MN CHKD

59.7MW STEAM TURBINE GENERATOR PROTECTIONS

RELAY TYPE : 7UM62

Relay Details Relay Type Make Rated current

7UM62 SIEMENS 5A

GENERATOR DETAILS: Rated Active Power Rated Apparent Power Rated Voltage (U Nmach) Rated Current (INmach )

= = = = = = = = = = = = = = =

59.7 70.2 11 3686.51 0.85 50 0.118 0.187 1.925 11000 220 0.424 25 0.08 8

PT Secondary PTR

= = =

11000 110 100

V V

GENERATOR CT DETAILS: CT Primary (IN CT prim) CT Secondary (IN CT Sec) CTR

= = =

4000 5 800

A A

GENERATOR TRANSFORMER DETAILS: Rated Capacity HV Voltage Rating LV Voltage Rating % Impedance

= = = =

60 230000 11000 12.50

GENERATOR TRANSFORMER CT DETAILS: HV Side CT Primary HV Side CT Secondary HV Side Neutral CT Primary HV Side Neutral CT Secondary

= = = =

500 1 250 1

Power Factor Rated Frequency X"d (Sub Transient Reactance) X'd (Transient Reactance) Xd (Direct Axis Reactance) Neutral Grounding Transformer Primary Neutral Grounding Transformer Secondary NGT Secondary Reactor Value Neutral Grounding Transformer Capacity Negative Sequence Capability I2S I2^2t

GENERATOR PT DETAILS: PT Primary (UN VT prim)

NEUTRAL GROUNDING TRANSFORMER HV Side LV Side Neutral CT Primary Neutral CT Secondary Load Resistance Rprimary Full Load Current CT Secondary Current

MW MVA kV A lag

8.00 Sec.

%

95% STATOR EARTH FAULT PROTECTION (64G) For machines in Unit transformer connection the evaluation of the displacement voltage is sufficient. Displacement Voltage: = = = =

110.00 5.5 6.05 6

Page 13 of 25

Hz P.U P.U P.U V V Ohms KVA %

MVA V V 0.125

6351

300 A

230 kV 11 kV

A A A A

= 11000 = 220 = 400 = 5 = 0.424 = 36.6 = 3686.51 = 3686.51x(5/4000) = 4.61

Max Open Delta Voltage With 5% of setting With 110% of margin setting U0>

11000 V

V V V V

V V A A   A A A

(11000/√3)




RELAY TYPE : 7UM62

100-% STATOR EARTH FAULT PROTECTION WITH 20HZ VOLTAGE INJECTION (64G) THE FACTOR R SEF =

ü2Transf x(üDivider/üMinCT)

for üTransf =üNeutral Transf = (UNprim/√3)/(UNsec) = (11000/1.732)/(220) = 28.87 The transformation ratio of the miniature CT is 400/5A

üDivider = 5/2 = üMinC = = = THE FACTOR R SEF =

2.5 400/5 80 (28.87^2)x(2.5/80) 26.043

If for the Trip stage R<< a generator-side fault resistance of 1000 is chosen A resistance of R<< SEF TRIP = (1000/26.043) = 38.4  = 40  If for the Alarm stage R< a generator-side fault resistance of 3000 is chosen A resistance of R< SEF ALARM = (3000/26.043) = 115.19  = 120  THE EARTH CURRENT STAGE, SEF I>> = 0.2*(UNsec/RL)*(1/üMin CT) = 0.2x((11000/√3)/36.6)x((1/400/5)) = 0.434 A

IMPEDANCE PROTECTION (21) Maximunm load current setting: Rated current of Generator Max current at 95% voltage

= 3686.51 = 3881

A A

As this relay should not pickup for overload,120% safty factor is considered IMP I> = 3

Generator Transformer back-up impedance protection setting: Generator Transformer Impedance at 11000V base = = Generator Transformer Impedance x 0.8 = = Secondary Impedance = = ZONE Z1 = Line back-up impedance protection setting: Line positive sequence impedance/Km Line Voltage Line Length

System Impedance on 22000V base Total Impedance

Total Secondary Impedance

= = = = = = = = = = = ZONE Z2 =

A

(11000x11000x0.125)/(60x1000000) 0.252 Ohms (0.252x0.8) 0.202 Ohms 0.202x(CTR/VTR) 0.202x(800/100) 2.000 Ohms 0.075 Ohms 230000 V 210.000 km (0.075x210) 15.724 Ohms (Imp. On 220000V base)x (11000x11000)/(230000x230000) 0.036 Ohms (Line Imp. + Transformer Imp.)x 1.1 (0.036+0.252)x1.1 0.317 Ohms 0.317x(CTR/VTR) 3.000 Ohms

Page 14 of 25




RELAY TYPE : 7UM62

LOSS OF EXCITATION (40) The reciprocal of secondary per unit synchronous direct reactance is,

1/Xdsec = (1/Xdmach)x(INmach/UNmach)x(UN VT prim/IN CT prim) = (1/1.925)x(3686.51/11000)x(11000/4000) = 0.479

CHAR 1 Muliplied by a safety factor of about 1.05, the setting value 1/Xdsec is, = 0.510 CHAR 2 1/Xdsec in CHAR 2 is set to about 0.9 of CHAR 1

= 0.460

CHAR 3 is for dynsmic stability of the machine and is set between 1/X d and 1/Xd'

1/Xd'sec = (1/Xd'mach)x(INmach/UNmach)x(UN VT prim/IN CT prim) = 4.928 CHAR 3 value1/xd CHAR. 3 situated approximately between the synchronous direct reactance xd and the transient reactance xd'. However, it should be greater than 1.


pickup thershold

Pickup Setting I2> =

(I2 max prim/IN machine)x(IN machine/IN CT prim)

max. perm.(I2 max prim /IN machine) in permanent operation in = 8.00 our machine

%

= (8)x(3686.51/4000) I2 = 7 %

Negative Sequence Factor K,

Ksec

=

Kprimary x(IN Machine/IN CT prim)2

Kprimary = 8 sec. = 8x(3686.51/4000) sec. FACTOR K = 7

Time for Cool Down,

tcooldown

=

Kprimary /(I2 perm/IN)2

= 1250

sec.

GEN .POLE SLIPPING PROTECTION ( OR) OUT-OF-STEP PROTECTION(78) The power swing rectance of the machine must be considered, which is approximately the transient reactance

Zb=X'd Zb = (X'd)x(kV2/MVA)x(CTR/VTR) Per unit Impedance (pu)

Zb

= = = = = = =

kV2 /MVA 11^2/70.24 1.723 Ohms 1.723x (CTR/PTR) 13.800 Ohms 13.8x0.187 3 Ohms

Thus ZC is set to 85% of the transformer impedance X SC .

ZC = 0.85 x XSC XSC = XSC prim x (kV2/MVA) x (CTR/VTR) = = = = = = ZC = =

kV2 /MVA 11^2/60 2.017 Ohms 2.017x (CTR/PTR) 16.200 Ohms 2.025 0.85x2.025 2.000 Ohms

Page 15 of 25




RELAY TYPE : 7UM62

Thus Za is decisive for the width of the power swing polygon

Za = 0.289 x Ztot Ztot = Zb + ZC = 5.000 Za = 1.00

Ohms

The covered system reactance should be 10,so

Zd = 10

Ohms

Zd-Zc = 8.00

Ohms

factor UE = 72.17 EXCITOR CB TIME DELAY

200 ms

THERMAL OVERLOAD PROTECTION (49) K-FACTOR: The K-FACTOR refers to the secondary nominal current. The following applies for the conversion Imax prim

= 115% X Inmach = 1.15 X 3686.51 A = 4239.48

IN

CT prim

= 4000

K-FACTOR

= Imax

A prim /

IN CT

prim

= 1.1

TIME CONSTANT (τ): Set Default Value as Q ALARM (Θ ⁄ Θtrip):

= 600

Sec

Q ALARM (Θ ⁄ Θtrip) issues thermal warning prior to tripping & is given in % of the tripping temperature level. = 1/(K-FACTOR)2 = 1/(1.1)^2 = 90.0 %

I ALARM: This level is set in secondary amperes, and should be set equal to, or slightly less than, the permissible continuous current K-FACTOR IN sec. = IN se c = 5 A Kτ-FACTOR: Set Default Value as

= 1

I MAX THERM.:

= = = =

T EMERGENCY: Set Default Value as

3 X Nominal generator current 3 X Inmach X (IN CT Sec/IN CT Prim) 3 X 3686.51 X (5/4000) 13.82 A

= 100

Sec

TEMP. RISE I : ΘNsec = ΘNMach x (INprim/INmach)2 where,

ΘNsec = Machine temperature with nominal secondary current ΘNMach = Machine temperature with nominal machine current = 84.5 (Considered for Calculation) °C Inprim = Nominal primary current of the current transformers A = 4000 INMach = Nominal machine current = 3686.51 A

= 84.5 X (4000/3686.51)^2 °C = 100.0 If the temperature input is used, the trip times change if the coolant temperature deviates from the internal reference temperature of 40 °C. The following formula can be used to calculate the trip time: (I/k.IN)2 + ((ΘK – 40 °C)/ (k2 ⋅ ΘN)) - (Ipre/k ⋅ IN)2 t = τ . ln (I/k.IN)2 + ((ΘK – 40 °C)/ (k2 ⋅ ΘN)) - 1 Therefore,

where,

ΘNsec

τ

= TIME CONSTANT k = K-FACTOR IN = Nominal device current

Page 16 of 25




RELAY TYPE : 7UM62

I Ipre ΘN ΘK

= = = =

Actually flowing secondary current Previous load current Temperature with nominal current IN Coolant temperature input

The following trip times result for different ambient temperatures ΘK with a supposed load current of I = 1.5 IN Ipre = 0 with ΘK = 40 °C:

t

= 600 x ln = 463

with ΘK = 80 °C:

t

t

(1.5/1.1)2 + ((40 °C – 40 °C)/ (1.1 2 ⋅ 100 °C)) - 1

Sec

= 600 x ln = 366

with ΘK = 0 °C:

(1.5/1.1)2 + ((40 °C – 40 °C)/ (1.1 2 ⋅ 100 °C)) - 0

(1.5/1.1)2 + ((80 °C – 40 °C)/ (1.1 2 ⋅ 100 °C)) - 0 (1.5/1.1)2 + ((80 °C – 40 °C)/ (1.1 2 ⋅ 100 °C)) - 1

Sec

= 600 x ln = 637

(1.5/1.1)2 + ((0 °C – 40 °C)/ (1.1 2 x 100 °C)) - 0 (1.5/1.1)2 + ((0 °C – 40 °C)/ (1.1 2 x 100 °C)) - 1

Sec

STG MAIN-1 RELAY PANEAL (7UM62-GR1) SI.NO

FUNCTION

SETTING RANGE

RECOMMENDED SETTING


1



ON

2

I-DIFF>

0.05..2.00 I/InO

0.20

I/InO

3

T I-DIFF>

0.00..60.00 sec; ∞

0.00

sec

4

I-DIFF>>

0.5..12.0 I/InO; ∞

8.00

I/InO

5

T I-DIFF>>

0.00..60.00 sec; ∞

0.00

sec

6

SLOPE 1

0.10..0.50

0.25

7

BASE POINT 1

0.00..2.00 I/InO

0.00

8

SLOPE 2

0.25..0.95

0.50

9

BASE POINT 2

0.00..10.00 I/InO

2.50

I/InO

10

I-ADD ON STAB.

2.00..15.00 I/InO

4.00

I/InO

I/InO


1

S/E/F PROT.


ON

2

U0>

2.0..125.0 V

6

V

3

T S/E/F

0.00..60.00 sec; ∞

0

sec


1

100% SEF-PROTN.


ON

2

R< SEF ALARM

20…700 Ohm

120

Ohm

3

R<< SEF TRIP

20…700 Ohm

40

Ohm

4

T SEF ALARM

0.00…60.00 sec; ∞

10.00

sec

5

T SEF TRIP

0.00…60.00 sec;∞

1.00

sec

6

SEF I>>

0.02…1.50A

0.43

A

7

U20MIN

0.3…15.0V

1.00

V

8

I20MIN

5…40mA

10.00

9

PHI ISEF

-60O...60O

0o

10

SEF Rps

0…700 Ohm

0

Ohm

11

RI-PARALLEL

20…700 Ohm;∞

∞

Ohm

Page 17 of 25

mA




RELAY TYPE : 7UM62


1

ROTOR E/F


ON

2

RE< WARN

3.0..30.0 kOhm

10.00

kOhm

3

RE<< TRIP

1.0..5.0 kOhm

2.00

kOhm

4

T-WARN-RE<

0.00..60.00 sec; ∞

10.00

sec

5

T-TRIP-RE<<

0.00..60.00 sec; ∞

0.50

sec

1

REVERSE POWER


ON

2

P> REVERSE

30.00..-0.50 %

-1.930

%

3

T-SV-OPEN

0.00..60.00 sec; ∞

2.00

sec

4

T-HOLD

0.00..60.00 sec; ∞

0.00

sec



1

Interturn protn

OFF/ON/Block relay

ON

2

U Interturn V>

0.3 .. 130.0 V

5.00

V

3

T-U Interturn V>

0.00 .. 60.00 sec; ∞

0.50

sec

4

Reset ratio

50 .. 95 %

80.00

%


1

INADVERT. EN.


ON

2

I STAGE

0.1..20.0 A; ∞

0.5

A

3

RELEASE U1<

10.0..125.0 V; 0

55

V

4

PICK UP T U1<

0.00..60.00 sec; ∞

5.00

sec

5

DROP OUT T U1<

0.00..60.00 sec; ∞

1.00

sec


1

UNBLANCED LOAD


ON

2

I2>

3.0…30.0%

7.0

%

3

T WARN

0.00…60.00 sec; ∞

20

sec

2

FACTOR K

2.0…100.00 sec; ∞

7

sec

3

T COOL DOWN

0…50000 sec

1250.0

sec

4

I2>>

10…100%

60

%

5

T I2>>

0.00…60.00 sec; ∞

3.00

sec

1

UNDEREXCIT


ON

2

T SHRT Uex<

0.00…60.00 sec; ∞

0.50

3

EXCIT.VOLT.

ON,OFF

OFF

4

Uexcit<

0.50…8.00V

2.00

V

5

Umin

10.0…125.0V

25.0

V

6

1/Xd CHAR.1

0.25…3.00

0.510


O

80O

7

ANGLE 1

50…120

8

T CHAR. 1

0.00…60.00 sec; ∞

10.00

9

1/Xd CHAR.2

0.25…3.00

0.460

O

ANGLE 2

50…120

11

T CHAR. 2

0.00…60.00 sec; ∞

10.00

12

1/Xd CHAR.3

0.25…3.00

1.10

13

ANGLE 3

50…120

14

T CHAR. 3

0.00…60.00 sec; ∞

Page 18 of 25

sec

90O

10

O

sec

sec

90O 0.30

sec




RELAY TYPE : 7UM62


U<

OFF,ON,Block relay for trip commands 10.0..125.0 V

99.0

V

3

T U<

0.00..60.00 sec; ∞

3.00

sec

4

U<<

10.0..125.0 V

88.0

V

5

T U<<

0.00..60.00 sec; ∞

0.50

sec

6

U< DOUT RATIO

1.01..1.20

1.05

1

UNDERVOLTAGE

2

ON


1

O/C Ip


ON

2

Ip

0.10..4.00 A

1.0

3

TIME DIAL: TD

0.50..15.00; ∞

0.50

4

IEC CURVE


Normal Inverse

5

U<

10.0..125.0 V

88.00

1

O/U FREQUENCY


ON

2

f1 PICKUP (UNDER)

40.00..65.00 Hz

49.0

Hz

4

T f1

0.00..600.00 sec

0

sec

5

f2 PICKUP (UNDER)

40.00..65.00 Hz

47.5

Hz

7

T f2

0.00..600.00 sec

2.00

sec

9

f3 PICKUP (OVER)

40.00..65.00 Hz

51.0

Hz

10

T f3

0.00..600.00 sec

2.00

sec

9

f4 PICKUP (OVER)

40.00..65.00 Hz

52.5

Hz

10

T f4

0.00..600.00 sec

2.00

sec

11

THRESHOLD f4



12

Umin

10.0..125.0 V; 0

72.00

1

OVERVOLTAGE


ON

2

U>

30.0..170.0 V

116.0

3

T U>

0.00..60.00 sec; ∞

3.00

4

U>>

30.0..170.0 V

121.0

5

T U>>

0.00..60.00 sec; ∞

0.50

6

U> DOUT RATIO

0.90..0.99

0.95

7

VALUES U>

Voltage protection with UPhasePhase,Voltage protection with UPhase-earth.

Voltage protection with U-Phase-Phase

1

OVEREXC. PROT.


ON

2

U/f >

1.00..1.20

1.10

3

T U/f >

0.00..60.00 sec; ∞

10

4

U/f >>

1.00..1.40

1.40

5

T U/f >>

0.00..60.00 sec; ∞

1

1

FORWARD POWER


ON

2

Pf<

0.5..120.0 %

5

%

3

T-Pf<

0.00..60.00 sec; ∞

10

sec

4

Pf>

1.0..120.0 %

5

%

5

T-Pf>

0.00..60.00 sec; ∞

2

sec

6

MEAS. METHOD

Method accurate Method fast

Method accurate

A

V


V


V sec V sec


sec

sec

LOW FORWARD POWER PROTECTION (37)

Page 19 of 25




RELAY TYPE : 7UM62


1

IMPEDANCE PROT.


ON

2

IMP I>

0.10...20.00 A

3.00

3

U< SEAL-IN

ON,OFF

ON

4

U<

10.0..125.0 V

88.00

5

T-SEAL-IN

0.10..60.00 sec

3.00

sec

6

T END

0.00..60.00 sec; ∞

2.00

sec

7

ZONE Z1

0.05..130.00 Ohm

2.00

Ohms

8

T-Z1

0.00..60.00 sec; ∞

0.10

sec

9

ZONE Z1B

0.05..65.00 Ohm

3.00

Ohms

10

T-Z1B

0.00..60.00 sec; ∞

∞

11

ZONE Z2

0.05..65.00 Ohm

3.00

Ohms

12

ZONE2 T2

0.00..60.00 sec; ∞

0.60

sec

13

POWER SWING

ON,OFF

OFF

A

V

sec


1

OUT-OF-STEP


ON

2

I1> RELEASE

20…400 %

120

%

3

I2< RELEASE

5…100 %

20

%

4

Za

0.20…130.00

1.00

Ohms

5

Zb

0.10…130.00

3.00

Ohms

6

Zc

0.10…130.00

2.00

Ohms

7

Zd-Zc

0.00…130.00

8.00

Ohms

8

PHI POLYGON

60.0…90.0O

90.0O

9

REP CHAR.1

1…4

1

10

REP CHAR.2

1…8

4

11

T-HOLDIG

0.20…60.00 sec

20.00

sec

12

T-SIGNAL

0.02…0.15 sec

0.05

sec

1

BREAKER FAILURE

ON/OFF

ON

2

TRIP INTERN

OFF Start Breaker Failure with Bin.Outp.12 Start Breaker Failure


3

CIRCUIT BREAKER I>

0.04-2.00A

0.2

4

TRIP TIMER

0.06-60sec

0.20

1

Ther. OVER LOAD


Alarm only

2

K-FACTOR

0.10..4.00

1.1

3

TIME CONSTANT

30..32000 sec

600.00

sec

4

Θ ALARM

70..100 %

90

%

5

I ALARM

0.50 .. 20.00 A

5.00

A

6

Kτ-FACTOR

1.0..10.0

1.00

7

I MAX THERM

2.50 .. 40.00 A

13.82

8

T EMERGENCY

10..15000 sec

100.00

sec

9

TEMP. RISE I

40..200 °C

100.00

°C

10

TEMP. RISE I

104..392 °F

212.00

°F

11

TEMP. INPUT


Disabled

12

TEMP. SCAL.

40..300 °C

100.00

°C

13

TEMP. SCAL.

104..572 °F

212.00

°F


A sec


Page 20 of 25

A




RELAY TYPE : 7UM62

STG MAIN-2 RELAY PANEAL (7UM62-GR2) SI.NO

FUNCTION

SETTING RANGE

RECOMMENDED SETTING


1



ON

2

I-DIFF>

0.05..2.00 I/InO

0.20

I/InO

3

T I-DIFF>

0.00..60.00 sec; ∞

0.00

sec

4

I-DIFF>>

0.5..12.0 I/InO; ∞

8.00

I/InO

5

T I-DIFF>>

0.00..60.00 sec; ∞

0.00

sec

6

SLOPE 1

0.10..0.50

0.25

7

BASE POINT 1

0.00..2.00 I/InO

0.00

8

SLOPE 2

0.25..0.95

0.50

9

BASE POINT 2

0.00..10.00 I/InO

2.50

I/InO

10

I-ADD ON STAB.

2.00..15.00 I/InO

4.00

I/InO

I/InO


1

S/E/F PROT.


ON

2

U0>

2.0..125.0 V

6

V

3

T S/E/F

0.00..60.00 sec; ∞

0

sec


1

100% SEF-PROTN.


ON

2

R< SEF ALARM

20…700 Ohm

120

Ohm

3

R<< SEF TRIP

20…700 Ohm

40

Ohm

4

T SEF ALARM

0.00…60.00 sec; ∞

10.00

sec

5

T SEF TRIP

0.00…60.00 sec;∞

1.00

sec

6

SEF I>>

0.02…1.50A

0.43

A

7

U20MIN

0.3…15.0V

1.00

V

8

I20MIN

5…40mA

10.00

9

PHI ISEF

-60O...60O

0o

10

SEF Rps

0…700 Ohm

0

Ohm

11

RI-PARALLEL

20…700 Ohm;∞

20.00

Ohm

1

IMPEDANCE PROT.


ON

2

IMP I>

0.10...20.00 A

3.00

3

U< SEAL-IN

ON,OFF

ON

4

U<

10.0..125.0 V

88.00

5

T-SEAL-IN

0.10..60.00 sec

3.00

sec

6

T END

0.00..60.00 sec; ∞

2.00

sec

7

ZONE Z1

0.05..130.00 Ohm

2.00

Ohms

8

T-Z1

0.00..60.00 sec; ∞

0.10

sec

9

ZONE Z1B

0.05..65.00 Ohm

3.00

Ohms

10

T-Z1B

0.00..60.00 sec; ∞

∞

11

ZONE Z2

0.05..65.00 Ohm

3.00

Ohms

12

ZONE2 T2

0.00..60.00 sec; ∞

0.60

sec

13

POWER SWING

ON,OFF

OFF

mA


Page 21 of 25

A

V

sec




RELAY TYPE : 7UM62


1

ROTOR E/F


ON

2

RE< WARN

3.0..30.0 kOhm

10.00

kOhm

3

RE<< TRIP

1.0..5.0 kOhm

2.00

kOhm

4

T-WARN-RE<

0.00..60.00 sec; ∞

10.00

sec

5

T-TRIP-RE<<

0.00..60.00 sec; ∞

0.50

sec


1

OUT-OF-STEP


ON

2

I1> RELEASE

20…400 %

120

%

3

I2< RELEASE

5…100 %

20

%

4

Za

0.20…130.00

1.00

Ohms

5

Zb

0.10…130.00

3.00

Ohms

6

Zc

0.10…130.00

2.00

Ohms

7

Zd-Zc

0.00…130.00

8.00

Ohms

8

PHI POLYGON

60.0…90.0O

90.0O

9

REP CHAR.1

1…4

1

10

REP CHAR.2

1…8

4

11

T-HOLDIG

0.20…60.00 sec

20.00

sec

12

T-SIGNAL

0.02…0.15 sec

0.05

sec


1

INADVERT. EN.


ON

2

I STAGE

0.1..20.0 A; ∞

0.5

A

3

RELEASE U1<

10.0..125.0 V; 0

55

V

4

PICK UP T U1<

0.00..60.00 sec; ∞

5.00

sec

5

DROP OUT T U1<

0.00..60.00 sec; ∞

1.00

sec


1

UNBLANCED LOAD


ON

2

I2>

3.0…30.0%

7.000

%

3

T WARN

0.00…60.00 sec; ∞

20

sec

4

FACTOR K

2.0…100.00 sec; ∞

7.000

sec

5

T COOL DOWN

0…50000 sec

1250.0

sec

1

UNDEREXCIT


ON

2

T SHRT Uex<

0.00…60.00 sec; ∞

0.50

3

EXCIT.VOLT.

ON,OFF

ON

4

Uexcit<

0.50…8.00V

2.00

V

5

Umin

10.0…125.0V

25.0

V

6

1/Xd CHAR.1

0.25…3.00

0.510

7

ANGLE 1

50…120O

80O

8

T CHAR. 1

0.00…60.00 sec; ∞

10.00

9

1/Xd CHAR.2

0.25…3.00

0.460

10

ANGLE 2

50…120O

90O

11

T CHAR. 2

0.00…60.00 sec; ∞

10.00

12

1/Xd CHAR.3

0.25…3.00

1.10

13

ANGLE 3

50…120O

90O

14

T CHAR. 3

0.00…60.00 sec; ∞

0.30


Page 22 of 25

sec

sec

sec

sec




RELAY TYPE : 7UM62


1

UNDERVOLTAGE


ON

2

U<

10.0..125.0 V

99.0

V

3

T U<

0.00..60.00 sec; ∞

3.00

sec

4

U<<

10.0..125.0 V

88.0

V

5

T U<<

0.00..60.00 sec; ∞

0.50

sec

6

U< DOUT RATIO

1.01..1.20

1.05


1

O/C Ip


ON

2

Ip

0.10..4.00 A

1.0

3

TIME DIAL: TD

0.50..15.00; ∞

0.50

4

IEC CURVE


Normal Inverse

5

U<

10.0..125.0 V

88.00

1

O/U FREQUENCY


ON

2

f1 PICKUP (UNDER)

40.00..65.00 Hz

49.0

Hz

4

T f1

0.00..600.00 sec

0

sec

5

f2 PICKUP (UNDER)

40.00..65.00 Hz

47.5

Hz

7

T f2

0.00..600.00 sec

2.00

sec

9

f3 PICKUP (OVER)

40.00..65.00 Hz

51.0

Hz

10

T f3

0.00..600.00 sec

2.00

sec

9

f4 PICKUP (OVER)

40.00..65.00 Hz

52.5

Hz

10

T f4

0.00..600.00 sec

1.00

sec

11

THRESHOLD f4



12

Umin

10.0..125.0 V; 0

72.00

1

OVERVOLTAGE


ON

2

U>

30.0..170.0 V

116.0

3

T U>

0.00..60.00 sec; ∞

3.00

4

U> DOUT RATIO

0.90..0.99

0.95

5

VALUES U>

Voltage protection with UPhasePhase,Voltage protection with UPhase-earth.

Voltage protection with U-Phase-Phase

1

OVEREXC. PROT.


ON

2

U/f >

1.00..1.20

1.10

3

T U/f >

0.00..60.00 sec; ∞

10

4

U/f >>

1.00..1.40

1.40

5

T U/f >>

0.00..60.00 sec; ∞

1

1

FORWARD POWER


ON

2

Pf<

0.5..120.0 %

5

%

3

T-Pf<

0.00..60.00 sec; ∞

10

sec

4

Pf>

1.0..120.0 %

5

%

5

T-Pf>

0.00..60.00 sec; ∞

2

sec

6

MEAS. METHOD

Method accurate Method fast

Method accurate

A

V


V


V sec


sec

sec

LOW FORWARD POWER PROTECTION (37)

Page 23 of 25




RELAY TYPE : 7UM62


1

REVERSE POWER


ON

2

P> REVERSE

30.00..-0.50 %

-1.930

%

3

T-SV-OPEN

0.00..60.00 sec; ∞

2.00

sec

4

T-HOLD

0.00..60.00 sec; ∞

0.00

sec


1

Interturn protn

OFF/ON/Block relay

ON

2

U Interturn V>

0.3 .. 130.0 V

5.00

V

3

T-U Interturn V>

0.00 .. 60.00 sec; ∞

0.50

sec

4

Reset ratio

50 .. 95 %

80.00

%

1

BREAKER FAILURE

ON/OFF

ON

2

TRIP INTERN

OFF Start Breaker Failure with Bin.Outp.12 Start Breaker Failure


3

CIRCUIT BREAKER I>

0.04-2.00A

0.2

4

TRIP TIMER

0.06-60sec

0.20

1

Ther. OVER LOAD


Alarm Only

2

K-FACTOR

0.10..4.00

1.1

3

TIME CONSTANT

30..32000 sec

600.00

sec

4

Θ ALARM

70..100 %

90

%

5

I ALARM

0.50 .. 20.00 A

5.00

A

6

Kτ-FACTOR

1.0..10.0

1.00

7

I MAX THERM

2.50 .. 40.00 A

13.82

8

T EMERGENCY

10..15000 sec

100.00

sec

9

TEMP. RISE I

40..200 °C

100.00

°C

10

TEMP. RISE I

104..392 °F

212.00

°F

11

TEMP. INPUT


Temp. of RTD 1

12

TEMP. SCAL.

40..300 °C

100.00

°C

13

TEMP. SCAL.

104..572 °F

212.00

°F


A sec


Page 24 of 25

A




RELAY TYPE : 7UM62

POWER SYSTEM DATA

50 Hz 60 Hz L1 L2 L3 L1 L3 L2 Direct connected to busbar Unit transformer connected YES NO

50 HZ

1

Rated frequency

2

PHASE SEQ

3

Scheme

4

ATEX100

5

factor R SEF

1.0..200.0

26.04

6

Temp unit

Degree Celsius Degree Fahrenheit

DEGREE CELCIUS

7

UN Generator

0.40..800.00 Kv

11

8

SN Generator

0.20..5000.00 MVA

70.24

Isolated Solid Earthed Isolated Solid Earthed YES NO

L1 L2 L3 Unit transformer connected NO

KV MVA

ISOLATED

9

Starpoint S1

10

Starpoint S2

15

STRPNT OBJ S1

16

IN PRI-1 SIDE-1

1..100000 A

4000

A

17

IN SEC-1 SIDE-1

1A 5A

5

A

18

CT ANGLE W0

-5.00..5.00 °

0

19

FACTOR IEE1

1.0..100000.0

300

20

STR PNT OBJ S2

YES NO

YES

21

IN PRI-1 SIDE-2

1..100000 A

4000

A

22

IN SEC-1 SIDE-2

1A 5A

5

A

23

FACTOR IEE2

1.0..100000.0

1

24

GRD TERM. IEE2

Terminal Q7 Terminal Q8

Q7

25

UNOM PRIMARY

0.10..400.00 kV

11

26

UNOM SECONDARY

100..125 V

110

27

UE CONNECTION

UE connecte to neutra transformer UE connected to broken delta winding not connected UE connected to any VT UE connected to Rotor UE connected to Loading Resistor

UE connected to Loading Resistor

28

FACTOR UE

1.0..2500.0

72.17

29

UPH/UDELTA

1.00..3.00

1.732

30

T MIN TRIP CMD

0.01..32.00 sec

0.15

SEC

31

T MIN TRIP CMD

0.01..32.00 sec

1.15

SEC

1

% of diff lockout V1& V2

2, 4, 6, 8, 8, 10

4

2

time

0.25, 0.5, 0.75, 1, 1.5

0.5

ISOLATED YES

KV V

Check synchronisation SKE11

Note: 1) Address 0152 is set to Disable Since the System Scheme Configuration is Unit transformer connected. 2) In Thermal Overload Protection Only Alarm Stage is Enabled as per the protection scheme 3) Machines in Unit transformer connection the evaluation of the displacement voltage is sufficient for 95% Stator Earth Fault Protection (64G)

Page 25 of 25

% SEC

Gen Settings 18.03.14

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