D60-setting example.pdf

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GE MULTILIN

D60 Line Distance relay Setting Example Provided for D60 model D60-C00-HCH-F8A-H6P-M6P-P6C Primary Functions This relay provides 3-pole tripping functions and initiates autoreclosure. The primary purpose of this relay is 3-zone stepped line phase and ground distance protection, pilot Permissive Overreaching Tripping scheme. Distance is blocked by VT Fuse Failure, Power Swing Detect and load Enchroachment. Line Pickup (switch onto the fault) backs up distance on line energization. Autoreclose can be initiated externally (from L90 relay, for example) and is supervised by synchrocheck. Relay has inputs from breaker auxiliary contacts, panel pushbuttons, RTU etc, also outputs for trip, alarm, status that are collected by the HMI and RTU.

~

Z1, Z0

Zb

Zf

~

VT: VTpri=161000/3V, VTsec=115/3V,  VTR= VTpri/ VTsec=161000/115=1400 CT: CTpri=600, CTsec=5A.  CTR= CTpri/ CTsec=600/5=120 Protected Line: Length: L=100 km Line impedance: Z1pri=3585 , Z0pri=10580 Z1pri * CTR 35 * 120 Z1 sec   385 VTR 1400 Z0pri * CTR 105 * 120 Z0 sec   980 VTR 1400

Normal system impedance of the source behind relay: Sb=60, Zb * CTR 60 * 120 Zb sec   5.14 VTR 1400

Normal system impedance of the source in front of the relay: Sf=70, Zf * CTR 0 * 120 Zf sec   6 VTR 1400

Minimum system impedance of the source behind relay: Sb_min=80 Minimum system impedance of the source in front of the relay: Sf_min=90 Minimum SLG end of the line fault current with infeed from behind source only is: IFgr _ min 1 

VTpri * 3 3 * (3 * Sb _ min 2 * Z1pri Z0pri)



161000 * 3 3 * (3 * 80 2 * 35 105)

672A

Minimum SLG end of the line fault current flowing in the relay with infeed from both sources: IFgr _ min 2 

VTpri * 3

Sf _ min * 255A  (Sb _ min Z1pri) * Sf _ min (Sb _ min Z0pri) * Sf _ min  Sb _ min Z1pri Sf _ min 3* 2*   Sb _ min Z0pri Sf _ min   Sb _ min Z1pri Sf _ min

Minimum Three-phase end of the line fault current flowing in the relay with infeed from both sources:

12/22/2004 Ilia Voloh

D:\Documenty\gepm\Russia\kep\D60-setting example.doc

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VTprim Sf _ min * 885 A (Sb _ min Z1prim ) * Sf _ min Sb _ min Z1prim Sf _ min 3* Sb _ min Z1prim Sf _ min

Minimum phase-to-phase end of the line fault current flowing in the relay with infeed from both sources: IF3ph _ min* 3 IF 2ph _ min  767A 2

Maximum load current allowed is: IL = 600A =1.0pu,  load impedance is VT sec* CTR ZL sec  13.3 3 * IL PRODUCT SETUP

Fault Report A report is produced when the tripping elements issue a trip signal via assigned virtual output. (VO-1). Setting name Fault Report Source Fault Report Trigger

Example setting SRC 1 TRIP On (VO1)

User setting

Comment Fault report source Fault report trigger

Oscillography A report is produced when the trip output element issues a trip signal via (VO-1). Three phase voltages, three phase currents and digital states as noted below are recorded. Setting name Number Of Records Trigger Mode Trigger Position Trigger Source AC Input Waveforms

Example setting 10 Automatic Overwrite 30% TRIP On (VO1) 16 samples/cycle

User setting

Comment Number of records stored Mode (Overwrite or protected) Pre-fault and post-fault data Oscillography Trigger Sampling rate

Digital channels captured: Channel name Digital Channel 01 Digital Channel 02 Digital Channel 03 Digital Channel 04 Digital Channel 05 Digital Channel 06 Digital Channel 07 Digital Channel 08 Digital Channel 09 Digital Channel 10 Digital Channel 11 Digital Channel 12 Digital Channel 13 Digital Channel 14 Digital Channel 15 Digital Channel 16 Digital Channel 17 Digital Channel 18 Digital Channel 19 Digital Channel 20 Digital Channel 21 Digital Channel 22 Digital Channel 23


Example setting PH DIST Z1 OP PH DIST Z2 OP PH DIST Z3 OP GND DIST Z1 OP GND DIST Z2 OP GND DIST Z3 OP LINE PICKUP OP SRC1 VT FUSE FAIL OP POWER SWING BLOCK BREAKER 1 CLOSED BREAKER 2 CLOSED SYNC 1 CLS OP SYNC 1 SYNC OP SYNC 1 DEAD S OP POTT OP LATCH 1 ON AR ENABLED AR RIP AR LO AR CLOSE BKR 1 AR CLOSE BKR 2 AR RESET LINE PICKUP LEO PKP

User setting


Comment

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Digital Channel 24 Digital Channel 25 Digital Channel 26 Digital Channel 27 Digital Channel 28 Digital Channel 29 Digital Channel 30 Digital Channel 31 Digital Channel 32 Digital Channel 33 Digital Channel 34 Digital Channel 35 Digital Channel 36 Digital Channel 37 Digital Channel 38 Digital Channel 39 Digital Channel 40 Digital Channel 41 Digital Channel 43 Digital Channel 44 Digital Channel 45 Digital Channel 46 Digital Channel 47 Digital Channel 48

ALL BRK OPEN On (VO12) LINE PICKUP UV PKP LOAD ENCHR OP

User-Programmable LEDs The TRIP LED is illuminated when the protection elements issue a trip signal. This LED is latched. The ALARM LED is illuminated when ANY MAJOR ERROR is detected. This LED is self-reset. Setting name

Trip LED Input Alarm LED Input

Example setting

User setting

Comment

TRIP On (VO1) ANY MAJOR ERROR

Other LEDs are assigned as follows: Setting name LED # LED 1: OPERAND LED 9: OPERAND LED 10: OPERAND LED 14: OPERAND LED 15: OPERAND LED 17: OPERAND LED 21: OPERAND LED 22: OPERAND LED 23: OPERAND LED 24: OPERAND LED 25: OPERAND LED 26: OPERAND LED 28: OPERAND LED 29: OPERAND LED 30: OPERAND LED 32: OPERAND LED 33: OPERAND LED 34: OPERAND LED 35: OPERAND LED 36: OPERAND LED 37: OPERAND LED 38: OPERAND LED 40: OPERAND 12/22/2004 Ilia Voloh

Example setting Operand Type SETTING GROUP ACT 1 Self-Reset BREAKER 1 OPEN Self-Reset BREAKER 1 CLOSED Self-Reset BREAKER 2 OPEN Self-Reset BREAKER 2 CLOSED Self-Reset SYNC 1 SYNC OP Self-Reset AR ENABLED Self-Reset AR DISABLED Self-Reset AR RIP Self-Reset AR LO Self-Reset PILOT GR TR. On (VO9) Latched PILOT PH TR. On (VO8) Latched PH DIST Z1 OP Latched PH DIST Z2 OP Latched PH DIST Z3 OP Latched LINE PICKUP OP Latched GND DIST Z1 OP Latched GND DIST Z2 OP Latched GND DIST Z3 OP Latched RECL SUCCESS On (VO6) Latched SRC1 VT FUSE FAIL OP Self-Reset POWER SWING BLOCK Latched POTT OP Latched D:\Documenty\gepm\Russia\kep\D60-setting example.doc

User setting

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LED 41: OPERAND LED 43: OPERAND

TripCirALARM On (VO19) BUS CB PRESS OK (M7c)

Self-Reset Self-Reset

User-Definable Displays Screen 1 will display three phase current magnitudes (RMS values).. Screens 2, 3, 4 will display the three phase-to-ground voltage magnitudes (RMS values). Screens 5 will display the AB phase-to-phase voltage magnitudes (RMS values). Name DISPLAY # USER DISPLAY 1 USER DISPLAY 2 USER DISPLAY 3 USER DISPLAY 4 USER DISPLAY 5

Top Line SRC 1 RMS Ia:~ SRC 1 RMS Vag: SRC 1 RMS Vbg: SRC 1 RMS Vcg: SRC 1 RMS Vab:

Example setting Bottom Line Item 1 Item 2 Item 3 b:~ c:~ 6144 6146 6148 ~ 6656 ~ 6658 ~ 6660 ~ 6671

User setting

Installation Name Relay Settings Relay Name

Example setting Programmed Relay-1

User setting

Comment Relay have to be set to Programmed to be operational Relay unique name has to be assigned (tagged on events etc)

SYSTEM SETUP AC Inputs Current: Name F1: Phase CT Primary CT F1: Phase CT Secondary CT F1: Ground CT Primary

Example setting 600 A 5A 600 A

User setting

Comment =CTpri =CTsec =CTpri of parallel line. Ground CT primary nominal (mutual coupling compensation) =CTsec of parallel line. Ground CT secondary nominal (mutual coupling compensation)

CT F1: Ground CT Secondary 5 A

Voltage: VT F5: VT F5: VT F5: VT F5: VT F5: VT F5:

Name Phase VT Connection Phase VT Secondary Phase VT Ratio Auxiliary VT Connection Auxiliary VT Secondary Auxiliary VT Ratio

Example setting User setting Wye 66.4 V 1400.00 :1 Vag 66.4 V 1400.00 :1

Comment VT group: delta or wye =VTsec/3 =VTpri/VTsec 1-phase VT (for synchrocheck) =VTsec/3 (1-phase VT secondary nominal) =VTpri/VTsec

Power System Power system parameters are defined here Name Nominal Frequency Phase Rotation Frequency And Phase Reference Frequency Tracking Function

Example setting User setting 60 Hz ABC

60Hz or 50 Hz system System rotation

Comment

SRC 1 Enabled

Source for frequency tracking Enable is recommended

Signal Sources 2 sources are available per one DSP module. They have to be configured accordingly required functionality and connections. Name 12/22/2004 Ilia Voloh

Example setting User setting D:\Documenty\gepm\Russia\kep\D60-setting example.doc

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SOURCE 1: Name

SRC 1

SOURCE 1: Phase CT

F1

SOURCE 1: Ground CT

F1

SOURCE 1: Phase VT

F5

SOURCE 1: Auxiliary VT SOURCE 2: Name SOURCE 2: Phase CT SOURCE 2: Ground CT SOURCE 2: Phase VT SOURCE 2: Auxiliary VT

None SRC 2 None None None F5

Name of the 3-phase CT, VT sources for distance, metering etc 3-phase line CT circuitry (connected to F1, F2 and F3 channels) If used and connected: 1-phase parallel line CT (3I0) for mutual comp. (F4 channel). 3-phase VT for distance, metering etc (F5, F6, F7 channels) Auxiliary VT not used for this source Name of source #2 (used for synchrocheck function)

Synchronizing 1-phase voltage (F8)

Line Line positive and zero-sequence impedance in secondary ohms, used for fault locator Name Pos Seq Impedance Magnitude Pos Seq Impedance Angle Zero Seq Impedance Magnitude Zero Seq Impedance Angle Line Length Units Line Length

Example setting User setting 3.00 ohms =Z1sec Mag 85 ° =Z1sec Ang 9.00 ohms =Z0sec Mag 80 ° km 100

Comment

=Z0sec Ang

Breaker 1 Control This element is used for tracking 52a bus CB poles state and passing this data to other elements. It is also used for driving the faceplate open and closed indicators. BREAKER BREAKER BREAKER BREAKER BREAKER BREAKER BREAKER BREAKER BREAKER BREAKER BREAKER BREAKER Time

Name 1: Function 1: Push Button Control 1: Name 1: Mode 1: Open 1: Close 1: Phase A/3-Pole 1: Phase B 1: Phase C 1: External Alarm 1: Alarm Delay 1: Manual Close Recal

Example setting Enabled Disabled Bkr 1 3-Pole OFF OFF BUS CB 52A On(H7c) OFF OFF OFF 0.000 s 0.000 s

User setting

Comment Enabling the function Faceplate pushbuttons Name of the breaker Mode 1-pole or 3-pole Operand driving open coil Operand driving close coil Breaker auxiliary contact Ph. A or 3pole Breaker auxiliary contact Ph. B Breaker auxiliary contact Ph. C Alarm like Low pressure Alarm delay Limits the duration of manual close cmd

Breaker 2 Control This element is used for tracking 52a tie CB poles state and passing this data to other elements. It is also used for driving the faceplate open and closed indicators. Settings are identical to breaker 1.

FLEXLOGIC



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PH DIST Z2 OP

PH DIST Z3 OP

GND DIST Z1 OP

1

OR OR TRIP (VO1)

GND DIST Z2 OP

GND DIST Z3 OP

POTT OP

LINE PICKUP OP

GND DIST Z1 OP

2 GND DIST Z2 OP

OR OR

GR TRIP (VO2)

GND DIST Z3 OP



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PH DIST Z1 OP

3 PH DIST Z2 OP

PH TRIP (VO3)

OR OR

PH DIST Z3 OP

PH DIST Z1 OP

GND DIST Z1 OP 4

OR OR POTT OP

5 RECLOSE INIT ON(H7A)

RECLOSE INIT (VO4)

AND AND

LATCH 1 ON

BUS CB PRESS ON(M7C)

AR CLOSE BKR 1

6 SYNC 1 SYNC OP

CLOSE BRK (VO5)

AND AND

BUS CB PRESS ON(M7C)

CLOSE BRK ON (VO5)

7

0 min

Timer 4 4 min 8

AND AND

2 min

Timer 5

RECL SUCCESS (VO6) 1 min

ANY BRK CLD ON (VO11)



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POTT OP 9

AND AND

PILOT PH TR (VO8)

PH DIST Z2 OP

POTT OP 10

AND AND

PILOT GR TR (VO9)

GND DIST Z2 OP

SRC1 VT FUSE FAIL OP

11 POWER SWING BLOCK

BLOCK 21P (VO10)

OR OR

LOAD ENCHR OP

BREAKER 1 CLOSED 12 ANY BRK CLD (VO11)

OR OR BREAKER 2 CLOSED

BREAKER 1 OPEN 13

AND AND

ALL BRK OPEN (VO12)

BREAKER 2 OPEN

BREAKER 1 CLOSED 14

AND AND

300 min Timer 6 200 min

TRIPCIRALARM (VO19)

TRIP BUS CB VOFF (H1)

SRC1 VT FUSE FAIL OP 15

OR OR

CRIT ALARM (VO20)

TRIPCIRALARM ON (VO19)



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Entry FlexLogic Entry 1 FlexLogic Entry 2 FlexLogic Entry 3 FlexLogic Entry 4 FlexLogic Entry 5 FlexLogic Entry 6 FlexLogic Entry 7 FlexLogic Entry 8 FlexLogic Entry 9 FlexLogic Entry 10

Example setting PH DIST Z1 OP PH DIST Z2 OP PH DIST Z3 OP GND DIST Z1 OP GND DIST Z2 OP GND DIST Z3 OP POTT OP LINE PICKUP OP OR(8) = TRIP (VO1)

FlexLogic Entry 11 FlexLogic Entry 12 FlexLogic Entry 13 FlexLogic Entry 14 FlexLogic Entry 15

GND DIST Z1 OP GND DIST Z2 OP GND DIST Z3 OP OR(3) = GR TRIP (VO2)

FlexLogic Entry 16 FlexLogic Entry 17 FlexLogic Entry 18 FlexLogic Entry 19 FlexLogic Entry 20 FlexLogic Entry 21 FlexLogic Entry 22 FlexLogic Entry 23 FlexLogic Entry 24 FlexLogic Entry 25 FlexLogic Entry 26 FlexLogic Entry 27 FlexLogic Entry 28 FlexLogic Entry 29 FlexLogic Entry 30 FlexLogic Entry 31 FlexLogic Entry 32 FlexLogic Entry 33 FlexLogic Entry 34

PH DIST Z1 OP PH DIST Z2 OP PH DIST Z3 OP OR(3) = PH TRIP (VO3) PH DIST Z1 OP GND DIST Z1 OP POTT OP RECLOSE INIT On(H7a) OR(4) LATCH 1 ON BUS CB PRESS On(M7c) AND(3) = RECLOSE INIT (VO4) AR CLOSE BKR 1 SYNC 1 SYNC OP BUS CB PRESS On(M7c) AND(3) = CLOSE BRK (VO5)

FlexLogic Entry 35 FlexLogic Entry 36 FlexLogic Entry 37 FlexLogic Entry 38 FlexLogic Entry 39 FlexLogic Entry 40 FlexLogic Entry 41

CLOSE BRK On (VO5) NEGATIVE ONE SHOT TIMER 4 ANY BRK CLD On (VO11) AND(2) TIMER 5 = RECL SUCCESS (VO6)

FlexLogic Entry 42 FlexLogic Entry 43 FlexLogic Entry 44 FlexLogic Entry 45 FlexLogic Entry 46 FlexLogic Entry 47 FlexLogic Entry 48 FlexLogic Entry 49 FlexLogic Entry 50 FlexLogic Entry 51 FlexLogic Entry 52 FlexLogic Entry 53

POTT OP PH DIST Z2 OP AND(2) = PILOT PH TR (VO8) POTT OP GND DIST Z2 OP AND(2) = PILOT GR TR (VO9) SRC1 VT FUSE FAIL OP POWER SWING BLOCK LOAD ENCHR OP OR(3)


User setting


Comment Function assigned to cause a trip Function assigned to cause a trip Function assigned to cause a trip Function assigned to cause a trip Function assigned to cause a trip Function assigned to cause a trip Function assigned to cause a trip Function assigned to cause a trip Tripping gate assigned to Trip contacts

Any Ground Distance zone operation

Any Phase Distance zone operation

Gate assigned to initiate reclose

Breaker close command, autoreclose with synchcheck

At least one breaker closed

Identification of successful reclosure

Identification of pilot phase trip

Identification of pilot ground trip

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FlexLogic Entry 54 FlexLogic Entry 55 FlexLogic Entry 56 FlexLogic Entry 57 FlexLogic Entry 58

= BLOCK 21P (VO10) BREAKER 1 CLOSED BREAKER 2 CLOSED OR(2) = ANY BRK CLD (VO11)

FlexLogic Entry 59 FlexLogic Entry 60

BREAKER 1 OPEN BREAKER 2 OPEN

FlexLogic Entry 61 FlexLogic Entry 62 FlexLogic Entry 63 FlexLogic Entry 64 FlexLogic Entry 65 FlexLogic Entry 66 FlexLogic Entry 67

AND(2) = ALL BRK OPEN (VO12) BREAKER 1 CLOSED TRIP BUS CB VOff (H1) AND(2) TIMER 6 = TripCirALARM (VO19)

FlexLogic Entry 68 FlexLogic Entry 69 FlexLogic Entry 70 FlexLogic Entry 71

SRC1 VT FUSE FAIL OP TripCirALARM On (VO19) OR(2) = Crit alarm (VO20)

Blocking of phase distance

Identification of at least one breaker open state Identification of both breakers closed state

Trip circuit alarm when breaker 1 is closed

Critical alarm form either VTFF or Trip Circ. Alarm

Flexlogic Timers Timer # 1 2 3 4 5 6

Exmaple setting units PKP DPO second 0 1 second 0 1 second 0 1 second 0 4 second 2 1 millisecond 300 200

User setting

Comment Spare Spare Spare Delay to identify successful autorelosure Delay to identify successful autorelosure Delay to set Trip Circuit Supervivon alarm

Flexelements Can be used to create user-required protection elements.

Non-volatile latches Latch #1 used to memorize Autoreclose Enable/Disable command from either pushbuttons or RTU Name LATCH 1: Function LATCH 1: Type LATCH 1: Set LATCH 1: Reset LATCH 1: Target LATCH 1: Events

Example setting Enabled Reset Dominant 79 SET On(H8c) 79 RESET On(M8c) Disabled Enabled

User setting

Comment Reset or Set dominant Operand causing Set position Operand causing Reset position

GROUPED ELEMENTS - GROUP 1 LINE PICKUP (Group 1) This element performs the switch-on-to-fault function. Setting Name Function Signal Source


Example setting Enabled SRC 1

User setting


Comment

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Phase IOC Line Pickup

1.05 pu

UV Pickup Line End Open Pickup Delay Line End Open Reset Delay OV Pickup Delay

0.700 0.150 0.090 0.040

Autoreclose Coordination Bypass Autoreclose Coordination Pickup Delay Autoreclose Coordination Reset Delay Terminal Open

Enabled

AR Accelerate Block Target Events

=IFgr_min1*0.9/CTpri=672*0.9/600=1.05 pu (factor 0.9 is used to ensure operation for current below minimum fault current) No-voltage check

pu s s s

Time window of opportunity for Line Pickup operation, when voltage builds up. No high-speed reclosure is used for this application

0.045 s 0.005 s Indication from breakers that line is deenergized

ALL BRK OPEN On (VO12) OFF OFF Latched Enabled

Distance (Group 1) Specifies common for all distance elements settings. Setting Name

Example setting

Source Memory Duration

SRC 1 10 cycles

Force Self-Polar

OFF

User setting

Comment Source for 3-phase voltage and current for distance Duration of the memory Operand to reset memory if needed in special cases

Phase Distance Z1 Setting Name PH DIST Z1: Function PH DIST Z1: Direction PH DIST Z1: Shape PH DIST Z1: Xfmr Vol Connection PH DIST Z1: Xfmr Curr Connection PH DIST Z1: Reach

Example setting User setting Enabled Forward Mho None None 2.55 ohms

Comment

PH DIST Z1: RCA PH DIST Z1: Comp Limit

85 ° 90 °

PH DIST Z1: DIR RCA

85 °

Line positive sequence impedance angle. This produces a circular Mho characteristic Line positive sequence impedance angle for direct. checks

PH DIST Z1: DIR Comp Limit PH DIST Z1: Quad Right Blinder PH DIST Z1: Quad Right Blinder RCA PH DIST Z1: Quad Left Blinder PH DIST Z1: Quad Left Blinder RCA PH DIST Z1: Supervision

90 ° 10.00 ohms 85 °

Blinders for directional lines Used for QUAD only Used for QUAD only

10.00 ohms 85 ° 1.00 pu

PH DIST Z1: Volt Level PH DIST Z1: Delay PH DIST Z1: Block

0.000 pu 0.000 s BLOCK 21P On (VO10) Latched

Used for QUAD only Used for QUAD only <0.8*IF2ph_min/CTpri<0.8*767/600<1.02pu setting 1.0pu is chosen Settings used with series capacitors Element delay Blocking for defined conditions

PH DIST Z1: Target


Direction: Forward or Reverse Shape MHO or QUAD Needed if VTs are located after transform. Needed if CTs are located after transform. =Z1sec*0.85=3*0.85=2.55 (reach is set to 85% of the line length)

Target mode


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Setting Name PH DIST Z2: Function PH DIST Z2: Direction PH DIST Z2: Shape PH DIST Z2: Xfmr Vol Connection PH DIST Z2: Xfmr Curr Connection PH DIST Z2: Reach

Example setting Enabled Forward Mho None None 3.75 ohms


85 ° 90 °

PH DIST Z2: DIR RCA

85 °

PH DIST Z2: DIR Comp Limit PH DIST Z2: Quad Right Blinder PH DIST Z2: Quad Right Blinder RCA PH DIST Z2: Quad Left Blinder PH DIST Z2: Quad Left Blinder RCA PH DIST Z2: Supervision

90 ° 10.00 ohms 85 °

Blinders for directional lines Used for QUAD only Used for QUAD only

10.00 ohms 85 ° 0.680 pu



Used for QUAD only Used for QUAD only =Z1supervis*Z1reach/Z2reach=1*2.55/3.75= 0.68pu Settings used with series capacitors Element delay Blocking for defined conditions

PH DIST Z2: Target

User setting

Comment

=Z1sec*1.25=3*1.25=3.75 (reach is set to 125% of the line length)

Line positive sequence impedance angle. This produces a circular Mho characteristic Line positive sequence impedance angle for direct. checks

Target mode

Phase Distance Z3 Setting Name PH DIST Z3: Function PH DIST Z3: Direction PH DIST Z3: Shape PH DIST Z3: Xfmr Vol Connection PH DIST Z3: Xfmr Curr Connection PH DIST Z3: Reach

Example setting Enabled Forward Mho None None 6.00 ohms


85 ° 90 °

PH DIST Z3: DIR RCA PH DIST Z3: DIR Comp Limit PH DIST Z3: Quad Right Blinder PH DIST Z3: Quad Right Blinder RCA PH DIST Z3: Quad Left Blinder PH DIST Z3: Quad Left Blinder RCA PH DIST Z3: Supervision

85 ° 90 ° 10.00 ohms 85 °



PH DIST Z3: Target


10.00 ohms 85 ° 0.430 pu

User setting

Comment

2 conditions: >1.25*Z2reach>1.25*3.75>4.69 < ZLsec /2<13.3/2<6.65 (allowing for 200% emergency line overload) Zone reach is chosen 6 secondary Ohms Line impedance angle for distance This produces a circular Mho characteristic Line impedance angle for direct. checks Blinders for directional lines Used for QUAD only Used for QUAD only Used for QUAD only Used for QUAD only =Z1supervis*Z1reach/Z3reach=1*2.55/6=0.43 pu Settings used with series capacitors Element delay Blocking for defined conditions Target mode


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GE MULTILIN Phase Distance Z4 (not used) GROUND DISTANCE Notes on ground distance settings: Setting “ Ground Dist Z0/Z1 Mag” This setting specifies the ratio between the zero sequence and positive sequence impedance magnitudes required for zero sequence compensation of the ground distance elements. Setting “ Ground Dist Z0/Z1 Ang” This setting specifies the angular difference between the zero sequence and positive sequence impedances required for zero sequence compensation of the ground distance elements. The value to be entered is the zero sequence impedance angle minus the positive sequence impedance angle. It can be positive or negative sign. The two settings above are provided in all zone elements to provide precision in the event of tapped, nonhomogenous or series compensated lines. Calculation of Compensation Settings: For Positive Sequence Z1 = 385and Zero Sequence Z0=985in secondary ohms Then: Z0/Z1 MAG = 9/3 = 3 and Z0/Z1 ANG = 80–85= -5 Ground Distance Z1

Setting Name GR DISTANCE Z1: Function GR DISTANCE Z1: Direction GR DISTANCE Z1: Shape GR DISTANCE Z1: Z0/Z1 Mag

Example setting User setting Enabled Forward Quad 3.0

GR DISTANCE Z1: Z0/Z1 Ang

-5 °

GR DISTANCE Z1: Z0M Z1 Mag

0

GR DISTANCE Z1: Z0M Z1 Ang

0°

GR DISTANCE Z1: GR DISTANCE Z1: GR DISTANCE Z1: GR DISTANCE Z1:

2.55 ohms 85 ° 90 ° 85 °

Reach RCA Comp Limit DIR RCA

GR DISTANCE Z1: DIR Comp Limit 90 ° GR DISTANCE Z1: Quad Right Blinder

3.5 ohms

GR DISTANCE Z1: Quad Right Blinder RCA GR DISTANCE Z1: Quad Left Blinder

85 °

GR DISTANCE Z1: Quad Left Blinder RCA GR DISTANCE Z1: Supervision

85 °


1.70 ohms

0.34 pu

Comment

Shape of the element See calculations above, zero- sequence compensation Magnitude See calculations above, zero- sequence compensation Angle Zero sequence mutual compens. magnitude. ZOMmag=abs(ZM)/abs(Z1), where ZM is mutual impedance. Zero sequence mutual compens. Angle ZOMang=ang(ZM/Z1) Reach is equal to Phase Dist.Z1 reach Line positive sequence impedance angle. Reactance line tilt, 90 -straight line Line positive sequence impedance angel for direct. checks Used for base directional lines, 90 -straight line 2 conditions: >1.25*(25+2.6)*CTR/VTR>2.96 (where 25 is desired primary fault resistance to detect and 2.6 is line primary resistance at the zone end) <4*Z1Reach<4*2.55<10.2 3.5 setting is chosen Set equal to line RCA angle 2 conditions:

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GR DISTANCE Z1: Volt Level GR DISTANCE Z1: Delay GR DISTANCE Z1: Block GR DISTANCE Z1: Target

Settings used with series capacitors Element delay Blocking for defined conditions

0.000 pu 0.000 s SRC1 VT FUSE FAIL OP Latched

Target mode

Ground Distance Z2 Setting Name GR DISTANCE Z2: Function GR DISTANCE Z2: Direction GR DISTANCE Z2: Shape GR DISTANCE Z2: Z0/Z1 Mag

Example setting Enabled Forward Quad 3.0


-5 °

GR DISTANCE Z2: Z0M Z1 Mag GR DISTANCE Z2: Z0M Z1 Ang GR DISTANCE Z2: Reach GR DISTANCE Z2: RCA GR DISTANCE Z2: Comp Limit GR DISTANCE Z2: DIR RCA

0 0° 3.75 ohms 85 ° 90 ° 85 °

GR DISTANCE Z2: DIR Comp Limit

90 °

User setting

Shape of the element See calculations above, zero- sequence compensation Magnitude See calculations above, zero- sequence compensation Angle Zero sequence mutual compens. magnitude. Zero sequence mutual compens. angle Reach is equal to Phase Dist.Z2 reach Line positive sequence impedance angle Reactance line tilt, 90 -straight line Line positive sequence impedance angle for direct. checks Used for base directional line, 90 -straight line =GRZ1right_blind*Z2reach/Z1reach=3.5*3.75 /2.55=5.13 Set equal to line RCA angle

GR DISTANCE Z2: Quad Right 5.13 ohms Blinder GR DISTANCE Z2: Quad Right 85 ° Blinder RCA GR DISTANCE Z2: Quad Left Blinder 2.50 ohms

=GRZ1left_blind*Z2reach/Z1reach=1.7*3.75/ 2.55=2.5 Set equal to line RCA angle

GR DISTANCE Z2: Quad Left Blinder 85 ° RCA GR DISTANCE Z2: Supervision 0.23 pu


Comment

Overcurrent supervision =Z1supervis*Z1reach/Z2reach=0.34*2.55/3.7 5=0.23pu Settings used with series capacitors Element delay Blocking for defined conditions


Target mode

Ground Distance Z3 Setting Name GR DISTANCE Z3: Function GR DISTANCE Z3: Direction GR DISTANCE Z3: Shape GR DISTANCE Z3: Z0/Z1 Mag

Example setting Enabled Forward Quad 3.0


-5 °

GR DISTANCE Z3: Z0M Z1 Mag GR DISTANCE Z3: Z0M Z1 Ang GR DISTANCE Z3: Reach GR DISTANCE Z3: RCA GR DISTANCE Z3: Comp Limit GR DISTANCE Z3: DIR RCA

0 0° 6.00 ohms 85 ° 90 ° 85 °

GR DISTANCE Z3: DIR Comp Limit GR DISTANCE Z3: Quad Right

90 ° 8.20 ohms


User setting

Comment

Shape of the element See calculations above, zero- sequence compensation Magnitude See calculations above, zero- sequence compensation Angle Zero sequence mutual compens. magnitude. Zero sequence mutual compens. angle Reach is equal to Phase Dist.Z3 reach Line positive sequence impedance angle Reactance line tilt, 90 -straight line Line positive sequence impedance angle for direct. checks Used for base directional line, 90 -straight line =GRZ2right_blind*Z3reach/Z2reach=5.13*6.0/


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Blinder GR DISTANCE Z3: Quad Right 85 ° Blinder RCA GR DISTANCE Z3: Quad Left Blinder 4.00 ohms GR DISTANCE Z3: Quad Left Blinder 85 ° RCA GR DISTANCE Z3: Supervision 0.15 pu



3.75=8.2 Set equal to line RCA angle =GRZ2left_blind*Z3reach/Z2reach=2.5*6.0/3. 75=4.0 Set equal to line RCA angle Overcurrent supervision =Z1supervis*Z1reach/Z2reach=0.34*2.55/6=0 .15pu Settings used with series capacitors Element delay Blocking for defined conditions Target mode

Ground Distance Z4 (not used)

X POWER SWING DETECT [GROUP 1] Power Swing is used to block phase distance

As MHO Zone 3 is blocked by Power Swing Blocking, The Inner Limit Angle is established by co-ordination with Zone 3. Goal is to find where swing locus intersects Zone 3 (point 2), take a safety margin of 25% (point 3) and establish angle. 1. Point 1 is middle of sources and line impedances and is calculated as follows Z1 Zfsec Zbsec 3 5.14 6 Z 0 1  sec Zbsec  5.14 1.93 2 2 2. Point 2 is intersection of MHO zone 3 and swing trajectory

1

2

3

0

R

Z12  Z01 (Z3reach Z0 1  1.93 (3 1.93) 1.44

3.

Point 3 is safety margin Z13 1.5 * Z12 1.5 * 1.44 2.16

4.

Inner Limit Angle is; Z1sec Zf sec Zbsec 7.07 2 ILA 180 2 arctan( ) 180 2 arctan( ) 180 2 7334  Z13 2.16 

As minimum setting for ILA is 40 , ILA is set to 40and Z1-3 is re-calculated using 40angle;

Z13

5.

Z1sec Zfsec Zbsec 7.07 2   2.57   tan( 70 ) tan( 180 240 )

Outer Limit Impedance from point 1 to point 4 is determined by maximum load, assumed exporting load at 30 ; Z14 0.8 ZLsec cos( RCA 30) 0.8 13.3 cos(8530 ) 6.1

Consequently, Outer Limit Angle (OLA) is determined similarly to ILA as follows; 12/22/2004 Ilia Voloh


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GE MULTILIN

Z1sec Zfsec Zbsec 7.07 2 OLA 180 2 arctan( ) 1802 arctan( ) 1802 49.2 82  Z4 6.1 6. Average rotor velocity during stable power swing is 2 slip cycles per second (real number has to be confirmed with system studies) δ =2cyc/sec 

Then Delay 1 Timer (D1T) is determined as; D1T 

OLA ILA 360   cyc f nom



8240  360 2  0.017 sec 60

0.058 sec

Setting Name Function Source Shape Mode Supv Fwd Reach

Example setting Enabled SRC 1 Mho Shape Two Step 0.600 pu 11.25 ohms

Quad Fwd Mid Quad Fwd Out Fwd Rca Rev Reach

60.00 ohms 30.00 ohms 85 º 6.50 ohms

Quad Rev Mid Quad Rev Out Rev Rca Outer Limit Angle Middle Limit Angle Inner Limit Angle Outer Rgt Bld Outer Lft Bld Middle Rgt Bld Middle Lft Bld Inner Rgt Bld Inner Lft Bld Delay 1 Pickup Delay 1 Reset

60.00 ohms 30.00 ohms 85 º 89 º 90 º 40 º 100.00 ohms 100.00 ohms 100.00 ohms 100.00 ohms 100.00 ohms 100.00 ohms 0.058 s 0.050 s

Delay 2 Pickup

0.017 s

Delay 3 Pickup

0.009 s

Delay 4 Pickup

0.017 s

Seal-In Delay

0.400 s

Trip Mode

Delayed

Block

OFF

Target

Self-reset


User setting

Comment 3-phase source with line current and voltage Shape MHO or QUAD Mode 2-step or 3-setp Overcurrent supervison 1.25*(Z1pri+Sf)*CTR/VTR 1.25*(35+70)*120/140 0 11.25 1.5*Z3reach 1.5*6 9 (or Z4reach if used) 11.25 is chosen Fwd reach for Quad middle zone (not used here) Fwd reach for Quad outer zone (not used here) Forward RCA, set equal to line impedance angle 1.25*Sb* CTR/VTR 1.25*60*120/1400 6.43 6.5 is chosen Reverse reach for middle zone in secondary Ohms Reverse reach for outer zone in secondary Ohms Reverse RCA, set equal to line impedance angle =89 , see calculations above Setting defines the MHO middle shape, not used =40 , see calculations above Outer shape right blinder resistive reach Outer shape left blinder resistive reach Middle shape right blinder resistive reach Middle shape left blinder resistive reach Inner shape right blinder resistive reach Inner shape left blinder resistive reach =0.058s, see calculations above This setting defines reset of the power swing when locus leaves outer shape. This setting is used for out-of-step function (not used for this application) This setting is used for out-of-step function (not used for this application) This setting is used for out-of-step function (not used for this application) This setting is used for out-of-step function (not used for this application) This setting is used for out-of-step function (not used for this application) Blocks out-of-step function (not used for this application)


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GE MULTILIN LOAD ENCROACHMENT (used to block phase distance Z1, Z2 and Z3 elements)

Setting Name Function Source

Example setting Enabled SRC 1

Min Volt

0.750 pu

Reach

6.65 ohms

Angle

35 °

Pickup Delay Reset Delay

0.000 s 0.000 s

Block Target Events

OFF Self-reset Enabled

User setting

Comment

3-phase AC source Setting determines the positive sequence voltage below which element is blocked =ZLsec/2, Resistive reach of the element in secondary ohm, allowing for 200% emergency loadings Setting specifies the size of the blocking region, should reflect maximum load angle Delay on pickup, if used to block time-delayed zones, should be less than zones delay Delay on dropout Can be used to block element for certain conditions, for example VT fuse failure

CONTROL ELEMENTS Setting Groups 2 through 6-Not Used. Trip Output-not used as single-pole tripping is not required Synchrocheck Setting Name SYNCHROCHECK1: Function SYNCHROCHECK1: Block SYNCHROCHECK1: V1 Source SYNCHROCHECK1: V2 Source SYNCHROCHECK1: Max Volt Diff SYNCHROCHECK1: Max Angle Diff SYNCHROCHECK1: Max Freq Diff SYNCHROCHECK1: Freq Hysteresis SYNCHROCHECK1: Dead Source Select SYNCHROCHECK1: Dead V1 Max Volt SYNCHROCHECK1: Dead V2 Max Volt SYNCHROCHECK1: Live V1 Min Volt SYNCHROCHECK1: Live V2 Min Volt SYNCHROCHECK1: Target


Example setting Enabled

User setting

Comment

OFF SRC 1

1 voltage source

SRC 2

2nd voltage source

10000 V

Maximum allowed voltage difference

30 °

Maximum allowed angle difference

1.00 Hz

Maximum allowed frequency difference

0.06 Hz

Frequency pickup/dropout hysteresis

LV1 and DV2

Dead/Live source selection. Line voltage- dead , bus voltage- live Minimum SRC1 (line voltage) for synchcheck to consider voltage Dead Minimum SRC2 (bus voltage) for synchcheck to consider voltage Dead Maximum SRC1 (line voltage) for synchcheck to consider voltage Live Maximum SRC2 (bus voltage) for synchcheck to consider voltage Live

st

0.30 pu 0.30 pu 0.70 pu 0.70 pu Disabled


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GE MULTILIN Digital Elements-not used Digital Counters-not used VT Fuse Failure This element is used for blocking the distance elements and issuing a critical alarm.

Setting Name VT FUSE FAILURE 1: Function

Example setting Enabled

User setting

Comment VT Fuse Fail has to be enabled

Open Pole Detector-not used Pilot Scheme POTT Setting Name Function Permissive Echo

Example setting Enabled Disabled

Echo Condition

OFF

Rx Pickup Delay Trans Block Pickup Delay

0.000 s 0.020 s

Trans Block Reset Delay Echo Duration Echo Lockout Line End Open Pickup Delay Seal-In Delay Gnd Dir OC Fwd

0.090 s 0.100 s 0.250 s 0.050 s 0.010 s OFF

No of Comm Bits Rx1 Rx2 Rx3 Rx4 Target

1 SPARE On(H8a) OFF OFF OFF Latched

User setting

Comment Needed for weak-infeed applications (not used for this application) Permissive echo oper. for weak-infeed applications, (not used for this application) Needed to cope with possible spurious Rx signal Transient blocking; needed to block distance during current reversals due to sequential tripping on the parallel lines Reset of transient blocking Duration of the echo Echo pickup on the breaker open conditions Seal-in delay Directional ground can supplement distance (not used for this application) Number of comms bits Contact Input for received signal

Autoreclose Setting Name Function Mode Max Number Of Shots Block BKR1 Close Time BKR1

Example setting Enabled 3 Pole - B 1 OFF 0.10 s

BKR Man Close

OFF

Blk Time Upon Man Cls 10.00 s 1-P Init 3-P Init 3-P TD Init

OFF RECLOSE INIT On (VO4) OFF

Multi P Fault BKR 1 Pole Open BKR 3 Pole Open

OFF OFF OFF


User setting

Comment Mode: single-pole, 3-pole etc Number of shots General Block is used Duration of the close command, should be greater than maximum breaker close time including aux. Contact Blocking of AR when breaker closed by operator from switch or SCADA. Duration of the AR blocking upon manual close Used in single-pole tripping Initiation of the 3-pole autoreclose from TPC specified functions Time delayed initiation (not used for this application) Used in single-pole tripping Used in single-pole tripping Breaker status is brought from Breaker


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GE MULTILIN

3-P Dead Time 1 3-P Dead Time 2 Extend Dead T1

1.00 s 1.20 s OFF

Dead T1 Extension

0.50 s

Reset Reset Time BKR Closed

OFF 10.00 s OFF

Block Pause

LATCH 1 OFF OFF

Inc Seq Time Block BKR2

15.00 s OFF

Close Time BKR2

0.10 s

Transfer 1 to 2

No

Transfer 2 to 1

No

BKR1 Fail Option

Continue

BKR2 Fail Option

Continue

1-P Dead Time BKR Sequence

1.00 s 1&2

Transfer Time

4.00 s

Event

Enabled

Control automatically st 3-pole dead time for 1 shot nd 2 shot is not used Extension of the Dead Time 1(not used for this application) Extension of the Dead Time 1(not used for this application) Custom reset if needed Reset time after successful reclose Breaker status is brought from Breaker Control automatically Blocking AR from Reset pushbutton Allows freezing of the recluse cycle, not used Incomplete sequence time to lockout Not needed for single-breaker application Not needed for single-breaker application Not needed for single-breaker application Not needed for single-breaker application Not needed for single-breaker application Not needed for single-breaker application 1-pole tripping Both breakers (if used) reclose simultaneously Transfer time from one breaker to another

Contact Inputs ID H7A H7C H8A H8C M7A M7C M8A M8C

Example setting Name Debounce Time RECLOSE INIT 2.0 ms BUS CB 52A 2.0 ms SPARE 2.0 ms 79 SET 2.0 ms TIE CB 52A 2.0 ms BUS CB PRESS 2.0 ms SPARE 2.0 ms 79 RESET 2.0 ms

User setting

Comment

Events Enabled Enabled Disabled Enabled Enabled Enabled Enabled Enabled

Bus CB auxiliary contact Input from Set pushbutton Tie CB auxiliary contact

Input from Reset pushbutton

Contact Input Thresholds Set To 84 Volts for 125 Volt batteries. Contact Outputs The critical failure output is used in parallel with VT Fuse Fail and Trip Circuit supervision alarms. ID H1 H2 H3

Example setting Name Operate Seal-In Events TRIP BUS CB TRIP On (VO1) OFF Enabled TRIP BUS SPR TRIP On (VO1) OFF Disabled CLOSE CB CLOSE BRK On OFF Enabled (VO5)


User setting


Comment

Rev. A1

g H4 H5 H6 M1 M2 M3 M4 M5 M6 P1 P2 P3 P4 P5 P6 P7 P8

GE MULTILIN FLT REC STRT BFI BUS CB BFI SPARE TRIP TIE CB TRIP TIE SPR AR SUCCESSF. TRIPtoFL.REC BFI TIE CB BFI TIE SPR RTU:GR TRIP

TRIP On (VO1) TRIP On (VO1) TRIP On (VO1) TRIP On (VO1) TRIP On (VO1) RECL SUCCESS On (VO6) TRIP On (VO1) TRIP On (VO1) TRIP On (VO1) GR TRIP On (VO2) RTU:PH TRIP PH TRIP On (VO3) RTU: AR IN AR ENABLED RECLOSE ON AR ENABLED RECLOSE OFF AR DISABLED RTU: AR OFF AR DISABLED Cric. Alarm Crit. Alarm On (VO20) CTL: AR ON AR ENABLED

OFF OFF OFF OFF OFF OFF

Disabled Disabled Disabled Disabled Disabled Enabled

OFF OFF OFF OFF

Disabled Disabled Disabled Enabled

OFF

Enabled

OFF OFF OFF OFF OFF

Disabled Enabled Enabled Disabled Enabled

OFF

Disabled

VTFF and Trip Circuit Supervision

Virtual Outputs ID VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT VIRTUAL OUTPUT

1 2 3 4 5 6 7 8 9 10 11 12 19 20

Example setting Name Events TRIP Enabled GR TRIP Disabled PH TRIP Disabled RECLOSE INIT Enabled CLOSE BRK Enabled RECL SUCCESS Disabled SPARE Disabled PILOT PH TR. Disabled PILOT GR TR. Disabled BLOCK 21P Enabled ANY BRK CLD Disabled ALL BRK OPEN Disabled TripCirALARM Enabled Crit. Alarm Disabled

User setting

Comment Trip command Ground distance operation Phase distance operation Initiation of reclosure Close breaker(s) command Reclosure is successful SPARE Phase pilot scheme operation Ground pilot scheme oper. Block phase distance At least one breaker closed Both breakers open Trip Circuit Supervision oper. Critical alarm operation

Color-coding Cell color


Remark Critical setting, need to be revised specifically to protected line Set per project specification Non critical, default setting


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GE MULTILIN


Rev. A1

D60-setting example.pdf

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