directional

Substation: FAEDA 132/33/11 kV

Contract: KRG-MOE Stage 5

DIRECTIONAL O/C and E/F PROTECTION TEST RECORD SHEET

SITE Protected Unit:

Circuit No. and ref.: Outgoing Feeder No.

1.RELAY DATA: Relay type designation

REX 521

Serial Number

     

Rated current (Amp.) Rated Frequency (Hz)

5 50 Hz

Produced by: Auxiliary DC supply (V)

ABB 110

Feeder/Location V.T. Ratio (kV/kV)

Line 132 kV 33/V3 /0.11/V3

Device No.

C.T. Ratio ( A/A ) Polarizing Voltage Vn

600/5/5 110 V AC

2. SETTING RECORD O/C Setting

Plant Relay Address E/F Setting

Plant Relay Address

Ip>=600A, TMS 0.2 NINV (1x In) Ip>> =2100A, 0.5 sec. DMT (3.5x In) Ip>>>=OFF RCA +60 Direction: Forward Line Incoming/Outgoing Feeder

Ie>= 75A, TMS 0.2 NINV (0.15 xIn) Ie>>=220A, 0.7 sec. DMT (0.45x In) Ie>>>=OFF RCA =0 Direction: Forward Line Incoming/Outgoing Feeder

3. GENERAL INSPECTION AND CHECKS: -

Installation and wiring correct to the relevant drawings: ………………………………………… Test block connections checked: …………………………………………………………………………….… Modules type designation or ratings information is correct: …………………………………… Relay case connected to the local earth bar: ……………………………………………………………. Output relays contacts are operating properly: …………………………………………………………

- Operation of digital display, LED indicators, reset buttons on relay front panel: ………

ZOZIK Testing eng. File Name:127211429.doc

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Substation: FAEDA 132/33/11 kV

Contract: KRG-MOE Stage 5

DIRECTIONAL O/C and E/F PROTECTION 4.

DIRECTIONAL CHARACTERISTICS PRESENTATION:

Typical directional Characteristic

E/F O/C

Determination of current detection in a two-phase Short Circuit IL1-IL2

Operating current when the basic angle Φb=0 ∆φ=80 and starting current 1% In

5. TEST RESULTS : 5.1 Directional Earth Fault current test by secondary current/voltage injection: Polarizing Voltage(s) Injected Angle L1=63V L2=63V

-30 -150

0

Current (s) injected Phase(s) Angle L1=

6

L2=

6

L3=0V

L3=

L1=0V

L1=

L2=63V

-30 0

L3=63V

-150

L1=63V

-150

L3=63V

-30

Lead

Lag

Shifted currents L2& L3

L2=

6

L3=

6

L1=

6

L2=

L2=0V

Angle Boundaries of operating area (Current shifting ) Shifted currents L1& L2

Lead

Shifted currents L3& L1 Lead

L3=

Lag

Lag

6

5.2 Directional Over current test by secondary current/voltage injection: Three-Phase fault currents of all three phases shifted at a time L1=63V 00 L1 6 IL1 From +200 to -1370 L2=63V

-1200

L2

6

IL2 From +200 to -1370

L3=63V

+1200

L3

6

IL3 From +200 to -1370

ZOZIK Testing eng. File Name:127211429.doc

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Contract: KRG-MOE Stage 5

Substation: FAEDA 132/33/11 kV

DIRECTIONAL O/C and E/F PROTECTION Note: Values of injected quantities exceeded threshold values of I>, I0> and Vp 5.3

Sensitivity and timing test by secondary current injection:

5.3.1 Over current Ip> FWD in operating area Polarizing Voltage 0

L1=63V

0

L2=63V

-1200

L3=63V

+120

0

Phase

Injected (A)

L1

10

L2

10

L3

10

Operation time (sec)

5.3.2 Over current Ip>> Definite time Polarizing Voltage L1=63V L2=63V L3=63V

0

0

-120

0

+120

0

Phase

Injected (A)

L1

17

L2

17

L3

17

Operation time (sec)

5.3.3 Earth Fault Ie>  FWD in operating area Polarizing Voltage

Phase

Injected (A)

L1=63V

Oper. area

L1

0.8

L2=63V

Oper. area

L2

0.8

L3=63V

Oper. area

L3

0.8

Operation time (sec)

5.3.4 Earth Fault Ie>> Definite time Polarizing Voltage

Phase

Injected (A)

L1=63V

Oper. area

L1

2.5

L2=63V

Oper. area

L2

2.5

L3=63V

Oper. area

L3

2.5

Operation time (sec)

5.3.5 Sensitivity test to Polarizing Voltage for three phase faults in Oper. Area: Min. Polarizing Voltage:3I>

UL12= 4.5xV3

Min. Polarizing Voltage:I0>

U0= 5.5

V

UL13= 4.5xV3

V

UL23= 4.5xV3

V

5.3.6 Directional Test of E/F protection: Current against U0 L1: +800; -800

L2: +800; -800

L3: +800; -800

Note: Values of injected quantities exceeded threshold values of I>, I0> 6. Other Tests and Checks Circuit breaker tripping and signaling: Autoreclosing initiated by 3I>> and 3I0>>: On load tests and checks performed:

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V

Substation: FAEDA 132/33/11 kV

Contract: KRG-MOE Stage 5

DIRECTIONAL O/C and E/F PROTECTION Observation of Testing Engineer: Testing Equipment: Freja 300 connecting leads and

ZOZIK Testing eng. File Name:127211429.doc

accessories

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