229.Testing of Ycgf-11 With F6150-FieldFailure

Macro Type: ZPLLRV YCGF-11(FIELD FAILURE RELAY) Location Path \ALSTOM GENERAL\YCGF11\40

DOBLE ENGINEERING PVT LTD

ProTesT Notebook Report 5/13/2005 Originator Notes: User Notes: YCGF11: Formule; Loss of field supply to a synchronous generator can be caused by a fault in the excitation circuits or by incorrect opening of the field MTA = {pHi(1) + pHi(2)} / 2 circuit breaker. On loss of field, the machine operates as an induction generator excited by reactive i.e. pHi(1) = 220 degree, & pHi(2) = 320 degree power drawn from the system to which it is connected. This could result in instability of power in the system MTA = ( 220 + 320 ) / 2 and overheating of the rotor, especially if the machine is of the = 270 degree cylindrical rotor type without damping windings in the pole faces. Outer limit test: To avoid mal-operation due to synchronising surges and transient conditions, the relay is used with a simple definite time delay Expected value of voltage at which the relay will operate is; relay and arranged to initiate alarm, tripping or load shedding if V = 2I ( ( K1*K5 ) + ( K3 + K4 ) ) adverse field conditions persist longer than a safe period. When used with generators designed for line charging which can NOTE: the injected value of current from follows: operate at rotor angles in excess of 90°, the diameter of the circle Circle diameter( K1*K5 ) Current to be injected characteristic must be set small. At this setting, the impedance 26 to 50 1.0 Ampere locus of the machine, on loss of field, can enter and leave the 50 to 125 0.4 Ampere relay circle characteristic at intervals depending mainly on load 125 to 250 0.2 Ampere conditions prior to the fault. To ensure correct operation in these conditions, it is necessary to use a set of timers and auxiliary TESTING PROCEDURE: relays. This arrangement is standard for turbo-alternator sets installed by ---Connect RS232 9-pin connector from F6150 simulator to PC. many utilities. ---Click the "TOOL" menu. ---Select F6000 configuration. Now Dialog box is Open. RANGES: ---Select "3V & 3I" in pre-set configuration field. ---Select "VA" in Convertible V/I sources. Settings of Circle diameter: ---Select "3" in Convertible V/I sources. ( 25 to 250 ohms ) - 1A rating. ---Select "I1" in Current sources. ( 5 to 50 ohms ) - 5A rating. ---Select "3" in Current sources. ( adjustable in 5% steps ) ---Connect wire from 1 and 2 terminals of relay to Logic Inputs-1 of "F6150". Setting of Offset: ---Connect wire from 7 and 8 terminals of relay to VA (red & ( 2.5 to 20 ohms ) - 1A rating black) terminals of "F6150". ( adjustable in 2.5 ohms steps ). ---Connect wire from 5 and 10 terminals of relay to I1 (red & ( 0.5 to 4 ohms ) - 5A rating black) terminals of "F6150". ( adjustable in 0.5 ohms steps ). ---Connect short-link between 6 & 9 terminals of relay. Maximum torque angle: ---Click the "Macro" menu. The MTA is 270° lagging within a ---Click "RUN" command. tolerance of ±5° TERMINAL NO. 9-10 C.T. INPUT2 7-8 P.T. INPUT 5-6 C.T. INPUT1 1-2 CONTACT 3-4 CONTACT


DOBLE EN

TESTCIRCUIT:

A

7

8

GIN

3

EERING

4

PVT

9

10

6

5

YCGF-11

V
I1
LTD



SET PARAMETERS IN SETTING MENU:

AUTOMATIC SETTING CALCULATION

TEST PARAMETER SET AUTOMATICALLY

ENTER VALUE FOR RELAY PARAMETERS



AUTOMATIC SET CIRCLE CHARACTERISTIC

Macro Type: ZPLLRV YCGF-11(FIELD FAILURE RELAY) Location Path \ALSTOM GENERAL\YCGF11\40 TEST RESULTS FOR OUTER LIMIT:

ACTUAL READINGS

CHARACTERISTIC TEST ANGLE RANGE INSTEPSOF 10 DEGREES



DOBLE ENGINEERING

TEST RESULTS FOR INNER LIMIT:

ACTUAL READINGS FOR INNER LIMIT

PVT LTD



ACTUAL CURVE ON READINGS:

T

INNER LIMI

T
OUTER LIMI



TEST REPORT INCLUDING GRAPH: OURTLIMIT: 5/13/2005 ProTesT Test Report Current Conditions Src High Low Ampl Phs Freq Prefault Conditions VA 7 8 ACTION ACTION 50.000 Duration (Cycles): I1 5 10 1 0 50.000 Src Ampl Phs Freq VA 0.0 0.0 I1 0.0 0 Conditions Ampl Units Offset Voltage 80 Volts Offset Duration 10 Cycles +/- Delta Voltage -0.5 Volts Delta Time 45 Cycles Voltage Limit 0 Volts Sense Connections: 3-4 Jumpers: 6-9 Fault Info: A-E FromAngle ToAngle Delta Units 190.00 360.00 10.00 deg Sense: Contacts O->C Label Value Equation V/2I Current 1 Angle 0 K Factor Delay: 0 Cycles Duration: 0 mSecs Source: MA TimeStamp Z Angle Z Actual Volts Result 4/28/05 17:51:06 190.000 No Op 200.000 No Op 210.000 16.250 32.500 Op 220.000 23.500 47.000 Op 230.000 28.250 56.500 Op 240.000 32.000 64.000 Op 250.000 34.250 68.500 Op 260.000 35.500 71.000 Op 270.000 35.750 71.500 Op 280.000 34.750 69.500 Op 290.000 32.750 65.500 Op 300.000 29.500 59.000 Op 310.000 25.250 50.500 Op 320.000 18.500 37.000 Op 330.000 No Op 340.000 No Op 350.000 No Op 360.000 No Op



CHARACTERISTIC CURVE FOR OUTER LIMIT:

Originator Notes User Notes CLIENT: GEB-ASOJ, 220KV CALCULATION: RELAY SR.NO.: CIRCLE DIAMETER (Z2) = K1*K5 = 0.85*36 = 30.6 OHMS RESULT: OK OFFSET (Z1) = (K3 + K4) = K2 = 0 + 2 = 2.0 OHM TESTEDBY: KAMIN DAVE, DOBLE ENGINEERING PVT LTD K1 = 0.85 K2 = 2.0 Ohms TEST SETTING: K3 = 0.0 Ohms K1 = 0.85 K4 = 2.0 Ohms K2 = 2.0 Ohms K5 = 36 Ohms K3 = 0.0 Ohms K4 = 2.0 Ohms Expected value of operating voltage is; K5 = 36.00 Ohms V = 2*1 ( ( 30.6 ) + ( 0.0 + 2.0 ) ) = 65.2 volts at phi = 270deg.



INNER LIMIT: 5/13/2005 ProTesT Test Report Current Conditions Src High Low Ampl Phs Freq Prefault Conditions VA 7 8 ACTION ACTION 50.000 Duration (Cycles): 0 I1 5 10 2 0 50.000 Src Ampl Phs Freq VA 0.0 0.0 I1 0.0 0 Conditions Ampl Units Offset Voltage 0 Volts Offset Duration 10 Cycles +/- Delta Voltage 0.5 Volts Delta Time 30 Cycles Voltage Limit 30 Volts Sense Connections: 3-4 Jumpers: 6-9 Fault Info: A-E FromAngle ToAngle Delta Units 190.00 350.00 10.00 deg Sense: Contacts O->C Label Value Equation V/2I Current 2 Angle 0 K Factor Delay: 0 Cycles Duration: 0 mSecs Source: MA TimeStamp Z Angle Actual Volts Result 4/28/05 18:29:29 190.000 No Op 200.000 No Op 210.000 5.375 21.500 Op 220.000 3.875 15.500 Op 230.000 3.125 12.500 Op 240.000 3.125 12.500 Op 250.000 2.625 10.500 Op 260.000 2.500 10.000 Op 270.000 2.500 10.000 Op 280.000 2.875 11.500 Op 290.000 2.750 11.000 Op 300.000 3.125 12.500 Op 310.000 3.625 14.500 Op 320.000 4.750 19.000 Op 330.000 6.625 26.500 Op 340.000 No Op 350.000 No Op



Originator Notes User Notes CLIENT: GEB-ASOJ, 220KV CALCULATION: RELAY SR.NO.: CIRCLE DIAMETER (Z2) = K1*K5 = 0.85*36 = 30.6 OHMS RESULT: OK OFFSET (Z1) = (K3 + K4) = K2 = 0 + 2 = 2.0 OHM TESTEDBY: KAMIN DAVE, DOBLE ENGINEERING PVT LTD K1 = 0.85 K2 = 2.0 Ohms TEST SETTING: K3 = 0.0 Ohms K1 = 0.85 K4 = 2.0 Ohms K2 = 2.0 Ohms K5 = 36 Ohms K3 = 0.0 Ohms K4 = 2.0 Ohms Expected value of operating voltage is; K5 = 36.00 Ohms V = 2*2 ( 2.0 ) = 8.0 volts at phi = 270deg.


DOBLE EN

MAXIMUM TORQUE ANGLE TEST:

I

E E
227DEGRE
GINEERING PVT LTD

311DEGRE

V
V



CO-ORDINATION CURVE AT DIFFERENT SETTINGS:

Documents

229.Testing of Ycgf-11 With F6150-FieldFailure