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GE P742 manual available for free PDF download: Technical Manual
GE P742 Technical Manual (561 pages)
Busbar Differential Protection Relay
Brand:
GE
| Category:
Relays
| Size: 11.05 MB
Table of Contents
Table of Contents
3
P74X/En It/Na7
5
Documentation Structure
9
Introduction to the Unit
11
Functional Overview
12
Product Scope
12
Figure 1: Functional Diagram
13
Ordering Options
14
P74X/En Td/Na7
17
Technical Data
19
Mechanical Specification
19
Enclosure Protection
19
Terminals Data
19
Ratings
20
Transmitter Optical Characteristics
20
Power Supply
20
Operating Range
20
Output Contacts
21
Environmental Conditions
21
Type Tests
22
Electromagnetic Compatibility (EMC)
22
Mechanical Robustness
23
IRIG-B and Real Time Clock
24
Dead Zone Protection
24
Busbar Protection
24
Performance Data
24
Protection Functions
25
Ethernet Data
25
Current Transformer and Feeder Characteristics
26
Dead Zone Protection (PU)
26
Breaker Failure Protection (PU)
26
Overcurrent Protection (PU)
26
Configuration
27
Earth Fault Protection (50N/51N)
27
Date and Time
27
CB Control (PU)
27
Measurements and Records List
28
Communications
28
Oscillography (Disturbance Recorder)
28
Optional Ethernet Port
28
Commission Tests
29
P74X/En Gs/Na7
31
Front Panel
35
Getting Started
35
User Interfaces and Menu Structure
35
Figure 2: Relay Front View (Example for P743 – 60 Te)
36
LED Indications
37
The Default Mappings for each of the Programmable Leds
38
Relay Rear Panel
41
Figure 4: P743 Relay Rear View 60Te
42
Introduction to the User Interfaces and Settings Options
43
Relay Connection and Power-Up
43
Menu Structure
44
Control and Support Settings
45
Disturbance Recorder Settings
45
Password Protection
45
Protection Settings
45
Front Panel User Interface (Keypad and LCD)
46
Relay Configuration
46
Default Display and Menu Time-Out
47
Control Inputs – User Assignable Functions
48
Hotkey Menu Navigation
48
Menu Navigation and Setting Browsing
48
Setting Group Selection
48
Password Entry
49
Reading and Clearing of Alarm Messages and Fault Records
49
Front Communication Port User Interface
50
Setting Changes
50
Figure 9: Front Port Connection
51
Front Courier Port
52
S1 Agile Relay Communications Basics
52
Off-Line Use of S1 Agile
53
Configuring the Ethernet Interface
54
Configuring the Board IP Address
56
Configuring the IED IP Address
56
Configuring the Redundant Ethernet Board
56
RSTP Configuration
57
Device Identification
58
IP Address Configuration
58
SNTP IP Address Configuration
58
RSTP Parameters
59
Bridge Parameters
60
Port Parameters
60
Port States
61
Configuring the Data Protocols
62
Courier Configuration
62
IEC 61850 Configuration
63
IEC 61850 Configuration Banks
64
IEC 61850 Network Connectivity
64
Connecting the IED to a PC
65
Installing the Configurator
65
PRP/HSR Configurator
65
Starting the Configurator
65
Check for Connected Equipment
66
PRP Configuration
66
PRP/HSR IP Address Configuration
66
Selecting the Device Mode
66
Filtering Database
67
HSR Configuration
67
End of Session
68
Filtering Entries Tab
68
Goose Filtering Tab
68
P74X/En St/Na7
69
Settings
71
Relay Settings Configuration
73
“System Data” Column
73
Central Unit P741
73
“Configuration” Column (P741 Central Unit)
76
“Configuration” Column (P742 / P743 Peripheral Units)
78
“PU Conf & Status” Column (P741 Central Unit)
80
Default Settings Restore
81
“Date and Time” Column
82
Differential Phase Fault Configuration
84
Differential Protection Configuration
84
Sensitive Earth Fault Element
85
Busbar Trip (87Bb)/Central Breaker Fail Backtrip Confirmation (50BF)
88
Dead Zone Configuration
89
Non-Directional Phase Overcurrent Protection
89
Circuit Breaker Fail and Undercurrent Function
91
CT Supervision
92
Circuit Breaker Control
93
“CT and VT Ratios” Column
94
“Record Control” Column
95
Measurements (“Measure’t Setup” Column)
96
Courier Protocol
97
Ethernet Port
97
“Communications” Column
97
Rear Port 2 Connection Settings
98
“Commissioning Tests” Column
99
Opto Configuration (“Opto Config” Column)
103
Control Input Setting (“Control Input” Column)
103
Intermicom Communications
104
Control Input Configuration (“Ctrl I/P Config” Column)
104
“Intermicom Comm and Conf” Columns
104
Intermicom Configuration
106
“Function Keys” Menu
107
“IED Configurator” Column
108
“Control I/P (Input) Labels” Column
109
Disturbance Recorder Settings Tables
110
P74X/En Op/Na7
115
Operation
117
Operation of Individual Ptorection Functions
121
Busbar Biased Current Differential Protection
121
Application of Kirchoffs Law
121
Bias Characteristic and Differential Current
122
Scheme Supervision by "Check Zone” Element
122
Busbar Protection Operation
123
Bias Characteristic and Differential Current Setting
123
Scheme Earth Characteristic Element
124
Threshold Coherency
125
Signal Quality
126
Tripping Criteria
126
Trip Duration
127
Current Circuit Supervision
127
Protection Options for the Zones
127
Options for a Circuitry Fault
127
Options for a PU Error Mode
128
Protection Options for the Check Zone
129
Vt(S) Connected to the Line(S) and a Peripheral Unit
130
Vt(S) Connected to the Bar(S) and the Central Unit
130
Voltage Criteria for Busbar Protection
130
Busbar Protection Tripping Order PU Logic
131
Dead Zone Protection (DZ)
131
Stub Protection
131
Busbar Protection Tripping Time Delays
131
Overcurrent Criterion
132
Undercurrent Reset Criterion
132
Circuit Breaker Fail Reset Criteria
132
Circuit Breaker Fail (CBF)
132
Principle of the Undercurrent Function
134
CB Element Logic
134
Logic Reset Criterion
135
Logic and Current Reset Criterion
135
Processing a Circuit Breaker Failure Condition
135
CB Fail Logic
136
Internally Initiated CBF
137
Back-Trip after Time Tbf2
138
Initial Trip
138
Re-Trip after Time Tbf1
138
Description of the Logic for Internally Initiated CBF
138
Circuit Breaker Failure Logic
139
General Zone Trip after Time Tbf4
140
Externally Initiated 50BF
140
Local Re-Trip after Time Tbf3
140
Three Phase Overcurrent Protection
141
CB Fail Alarm
141
Separate External 50BF Protection to the Busbar Protection
141
Inverse Time (IDMT) Characteristic
141
Earth Fault Protection
142
EF Time Delay Characteristics
142
External Fault Detection by High-Set Overcurrent/Earth Fault Element
142
Zero Sequence Current Supervision
142
Intermicom Teleprotection Introduction
143
Protection Signaling
144
Definition of Teleprotection Commands
144
EIA(RS)232 Intermicom (“MODEM Intermicom”)
145
Communications Media
145
Pictorial Comparison of Operating Modes
145
General Features & Implementation
146
EIA(RS)232 Physical Connections
147
Direct Connection
147
Modem Connection
148
Functional Assignment
148
Intermicom Statistics & Diagnostics
149
Current Transformers
150
CT Saturation Detection
150
Current Variation
150
Determinatoin of Signal Quality in Peripheral Unit
151
CT Saturation Reset
152
CT Location
153
Isolator and Circuit Breaker Function
154
Isolator State Monitoring Features
154
Circuit Breaker State Monitoring Features
154
CB State Monitoring Features Diagram
156
Remote Control of Circuit Breaker Diagram
156
Differential Current Display
158
Operation of Non Protection Functions
158
IRIG-B Signal (P741) Only
158
Programmable Scheme Logic
158
Communications between PU and CU
159
Communications Link
159
Direct Optical Fibre Link, 850Nm Multi-Mode Fibre
159
Optical Budgets
160
Trip LED Logic
160
Function Keys
161
CB Control Using Hotkeys
161
CB Control Hotkey Menu Diagram
162
CB Control Via Function Keys Default PSL Diagram
162
CB Control Using Function Keys
162
Setting Groups Selection
163
Control Inputs
163
P74X/En Ap/Na7
165
Application Notes
167
Protection of Substation Busbars
169
87BB Phase CU Settings (Solid Earthed Network Schemes)
170
Application of Individual Protection Functions
170
Busbar Protection Setting Guidelines
170
Sub-Station Features
171
“Idiff_Ibias” Setting Calculation Spreadsheet
171
Differential Busbar Protection
172
87BB CU Settings (Compensated Earthed Network Schemes)
174
87BB SDEF CU Settings (High Impedance Earthed Schemes Only)
175
Sub-Station Features - 8 Values
176
“Idiff_Ibias_Sdef_Highimp” Setting Calculation Spreadsheet
176
SDEF Busbar Protection
176
Busbar Protection Tripping Times
180
Busbar Protection Tripping Time Delay in a PU
180
Busbar Protection Tripping Time Delay in the CU
180
Over Current Protection (OC)
181
Earth Fault Protection (EF)
181
Transformer Feeder Example
183
CT Features
184
Setting Guidelines
184
Current Transofmers
186
“Low Voltage” Current Transformers Supervision
186
“High Voltage” Current Transformers Supervision
186
Circuit Breaker Function
187
Circuit Breaker State Monitoring
187
Trip Relays and Trip Circuit Supervision
187
TCS Scheme
187
Scheme 1 Optional R1 Opto Input Resistor Values
188
Scheme 1 PSL
188
TCS Scheme 2
189
Scheme 2 PSL
189
Scheme 3 Optional R1, R2 & R3 Opto Input Resistor Values
190
TCS Scheme 3
190
Scheme 3 PSL
190
CB Failure Protection (50BF) Disabled
191
Peripheral Units (P742 and P743)
191
Isolation and Reduced Function Mode
191
PU - Overhaul
192
Forcing Plant Position State
193
Central Processing Unit
194
Busbar Protection (87BB) Blocked
194
87BB Blocked & 50BF Disabled
194
System Operation under Failed Communications Situation
194
Waiting Configuration
195
Topology
196
Topology Configuration Tool
196
Nodal Assignment
197
Topology Communication
198
Topology Data
198
Topology Processing
199
Single Bar or Double Bus with Bus Sectionaliser
199
Double Bus with One CT Bus Coupler
200
Double Bus with Two CT Bus Coupler
201
Cts on One Side of Bus Coupler, CB Closes before Status Acquisition
204
Cts on One Side of Bus Coupler/Cb Closed/Fault Evolves between CT, CB
205
Cts on both Sides of Bus Coupler, CB Closes before Status Acquisition
205
Cts on both Sides of Coupler/Cb Closed/Fault Evolves between CT and CB
208
Undertaking a Numerical Differential Busbar Protectin Project
210
General Substation Information
211
Short Circuit Levels
211
Switchgear
212
Cubicle Specifications
212
Substation Architecture
213
Single Busbar Application with Bus Section Isolator
214
Standard Configurations
214
Single Busbar Application with Bus Section Circuit Breaker
215
Breaker and a Half Scheme
216
Double Busbar Application with Bus Coupler
216
Traditional Double Busbar Application with Bus Coupler and Bus Section
217
Triple Busbar Application with Bus Coupler and Bus Section
222
Double Bus Bar with Two Circuit Breakers Per Feeder
223
Mesh Corner Diagram
223
Six Main Bus for S/S CB Bus-Sections and CB By-Pass
224
Application of Non Protection Functions
226
Commissioning Mode Default PSL
226
CT Requirements
228
87BB Phase CT Requirements
228
Feeders Connected to Sources of Significant Power
228
Out of Service Feeders or those with Low Power Contribution
228
CT Specification According to IEC 185, 44-6 and BS 3938
229
87BB Sensitive Differential Earth Fault CT Requirements
230
Support of IEEE C Class Cts
230
Auxiliary Supply Fuse Rating
232
P74X/En Pl/Na7
233
Programmable Logic
235
S1 Px40 PSL Editor
237
Standard Tools
239
PSL Logic Signals Properties
241
Link Properties
241
Opto Signal Properties
241
GOOSE Output Signal Properties
242
Input Signal Properties
242
GOOSE Input Signal Properties
242
Output Signal Properties
242
Control in Signal Properties
243
Intermicom in Command Properties/Intermicom out Command Properties
243
Function Key Properties
243
Fault Recorder Trigger Properties
243
LED Signal Properties
244
Contact Signal Properties
244
LED Conditioner Properties
244
Contact Conditioner Properties
245
Timer Properties
245
Gate Properties
246
Description of P741 Logic Nodes
248
Description of P742 Logic Nodes
257
Description of P743 Logic Nodes
267
Factory Default Programmable Scheme Logic
280
Logic Input Mapping
280
Relay Output Contact Mapping
282
Function Key Input Mapping
283
Programmable LED Output Mapping
284
Fault Recorder Start Mapping
288
PSL DATA Column
288
P741 Programmable Scheme Logic
289
P742 Programmable Scheme Logic
293
P743 Programmable Scheme Logic
297
P74X/En Mr/Na7
301
Measurements and Recording
303
“View Recods” Column
306
Event and Fault Records
306
Types of Event
308
Change of State of Opto-Isolated Inputs
308
Change of State of One or more Output Relay Contacts
309
Relay Alarm Conditions
309
Alarm List
309
Protection Element Starts and Trips
311
General Events
311
Resetting of Event/Fault Records
312
Fault Records
312
Maintenance Reports
312
Viewing Event Records Via S1 Support Software
313
Event Filtering
315
Disturbance Recorder
316
“Disturb Recorder” Column – Central Unit
316
“Disturb Recorder” Column – Peripheral Unit
317
Measurements
319
Check Zone Phase Currents
319
Measured Currents/Sequence Voltages and Currents
319
Measurement Display Quantities
319
Monitoring Tools
321
S1
321
Dynamic Synoptic
321
P74X/En Fd/Na7
323
Firmware Design
325
Input and Output Boards
327
Processor Board (Main Board)/Coprocessor Board
327
Hardware Overview
327
Relay System Overview
327
Power Supply Module
328
IRIG-B Board
328
Architecture Diagrams
329
Ethernet or Redundant Ethernet Board
330
Software Overview
330
Real-Time Operating System
331
Relay Modules and Information Flow
332
System Services Software
332
Platform Software
333
Communication Software
333
Protection & Control Software
333
Hardware Modules
334
Processor Board
334
Coprocessor Board
334
Communication Board
335
Internal Communication Buses
335
Input Module
336
Input Board
337
Transformer Board
337
Universal Opto Isolated Logic Inputs
338
Power Supply Module (Including Output Relays)
338
Power Supply Board (Including EIA(RS)485 Communication Interface)
338
Output Relay Board (Standard)
339
Output Relay Board (High Speed / High Break)
339
Auxiliary Power Supply
340
IRIG-B Board (in P741)
340
Second Rear Communications & Intermicom Teleprotection Board
340
Ethernet and Redundant Ethernet Boards
341
Mechanical Layout
341
Relay Software
342
P74X System Overview
344
Database Interface
345
Protection and Control Software
345
Settings Database
345
Record Logging
345
Overview - Protection and Control Scheduling
346
Topology Software
346
Signal Processing
346
Function Key Interface
347
Event and Fault Recording
347
Initialization Software
349
System Boot
349
Self Testing and Diagnostics
349
Platform Software Initialization & Monitoring
350
Continuous Self-Testing
350
P74X/En CM/Na7
352
Commissioning
354
Setting Familiarisation
357
Equipment Required for Commissioning
358
Product Checks
359
Visual Inspection
360
Current Transformer Shorting Contacts
360
Current Transformer Shorting Contact Locations
361
Rear Terminal Blocks View
361
External Wiring
362
Location of Securing Screws for Heavy Duty Terminal Blocks
362
Insulation
362
Watchdog Contacts
363
Auxiliary Supply
363
With the Relay Energised
364
Date and Time Setting
364
With an IRIG-B Signal for Central Unit (P741) Only
364
Testing the Alarm and out of Service Leds
365
Without an IRIG-B Signal for Central Unit or Peripheral Unit
365
Light Emitting Diodes (Leds)
365
Testing the Trip LED
366
Testing the User-Programmable Leds
366
Field Voltage Supply
367
Input Opto-Isolators
367
Output Relays
367
IEC 61850 Communications
368
Courier Communications
368
IEC60870-5-103 Communication
368
Rear Communications Port
368
Second Rear Communications Port
369
K-Bus Configuration
369
EIA(RS)485 Configuration
369
EIA(RS)232 Configuration
370
EIA(RS)232 Intermicom Communications
370
Intermicom Loopback Testing & Diagnostics
370
Loopback Removal and Establishing Service Condition
371
Current Differential Communications
372
Current Inputs
372
CT Ratio Settings
373
Commissioning Test Menu
374
Test Mode for PU
374
Test Mode for CU
374
Busbar Monitoring (Only in CU)
375
Busbar (BB) & Circuit Breaker Fail (CBF) Disable (Only in CU)
375
Setting Checks
376
Apply Application-Specific Settings
376
How to Measure the Burden Resistance
377
Demonstrate Correct Relay Operation
379
Current Differential Bias Characteristic
379
Connect the Test Circuit
380
Slopes and Thresholds
382
Check the Operating Time
383
Perform the Test
383
Phase Overcurrent Protection
383
Breaker Failure Protection
384
External Initiation of BF Protection
385
Internal Initiation Breaker Failure Protection
386
Check Application Settings
387
End to End Tests
388
On-Load Checks
389
Final Checks
390
Commissioning Test Record
391
Product Checks List
392
Checks Setting
396
EIA(RS)232 Intermicom
397
On-Load Checks List
398
Setting Record
399
Relays Setting Configuration
399
Group 1 Protection Settings
409
Busbar Option
410
Input Labels
410
Output Labels
411
P74X/En Mt/Na7
428
Maintenance
430
Maintenance Period
432
Maintenance Checks
432
Alarms
432
Measurement Accuracy
432
Method of Repair
433
Replacing the Complete Relay
433
Location of Securing Screws for Terminal Block
434
Replacing a PCB
434
Pcb/Module Locations Viewed from Front
436
Replacement of the Main Processor Board
439
Replacement of the Optional Board
440
Replacement of the Input Module
441
Replacement of the Power Supply Board
442
Replacement of the Relay Board in the Power Supply Module
444
Replacement of the Opto Input, High Break and Separate Relay Boards
444
Replacement of the Coprocessor Board
446
Replacement of the Comms Board
447
Recalibration
448
P74X Relay
448
Changing the Relay Battery
448
Instructions for Replacing the Battery
448
Cleaning
449
P74X/En Ts/Na7
450
Troubleshooting
452
Initial Problem Identification
455
Power up Errors
456
Error Message/Code on Power-On
457
Out of Service LED Illuminated on Power up
459
Error Code During Operation
460
Mal-Operation of the Relay During Testing
471
Failure of Output Contacts
471
Failure of Opto-Isolated Inputs
471
Diagram Reconstruction after Recover from Relay
472
PSL Version Check
472
PSL Editor Troubleshooting
472
Incorrect Analog Signals
472
Repair and Modification Procedure
473
P74X/En Sc/Na7
474
SCADA Communications
476
Read Only Mode (Command Blocking)
478
Rear Port Information and Connection Advice
479
Rear Communication Port EIA(RS)485 Interface
479
EIA(RS)485 Bus
479
Bus Termination
479
Bus Connections & Topologies
480
Biasing
480
Courier Communication
481
Remote Communication Connection Arrangements
482
MODBUS Communication
483
IEC60870-5 CS 103 Communication
483
Up to 8 Addresses Example
484
More than 8 Addresses Example
484
DNP3.0 Communication
485
Second Rear Communication Port (SK4)
485
Ethernet Communication
486
Legacy Protocols
486
Courier Interface
489
Supported Command Set
489
Relay Courier Database
490
Setting Transfer Mode
490
Event Format
491
Event Types
491
Automatic Event Extraction
491
Event Extraction
491
Manual Event Record Extraction
492
Disturbance Record Extraction
492
Programmable Scheme Logic Settings
492
IEC 61850 Ethernet Interface
493
Interoperability
493
The Data Model
493
Capability
495
IEC 61850 in Micom Relays
495
Configuration Banks
496
Network Connectivity
496
The Data Model of Micom Relays
496
The Communication Services of Micom Relays
496
Peer-To-Peer (GSE) Communications
497
Scope
497
IEC 61850 GOOSE Configuration
497
Ethernet Functionality
497
Loss of Power
498
Ethernet Disconnection
498
P74Xen Sg/Na7
500
Symbols and Glossary
502
Logic Symbols Used
502
Logic Timers
509
Logic Gates
511
P74X/En In/Na7
512
Installation
514
Receipt of Relays
516
Handling of Electronic Equipment
517
Storage
518
Unpacking
519
Relay Mounting
520
Location of Battery Isolation Strip
520
Rack Mounting
521
Panel Mounting
522
IP52 Sealing Rings
522
RS485 Port
523
Medium and Heavy Duty Terminal Block Connections
523
Relay Wiring
523
IRIG-B Connections
524
Optical Fiber Connectors
524
Download/Monitor Port
524
Earth Connection
524
P741 - Central Unit
525
P742 – Peripheral Unit
527
P742 (40TE) – Rear View
528
P743 – Peripheral Unit
529
P743 (60TE) – Rear View
530
Firmware and Service Manual Version History
532
P74Xen Vh/Na7
532
Wiring Diagrams
544
External Connection Diagram: COMMS Options MICOM Px40 Platform
545
External Connection Diagram: Busbar Protection Central Unit P741
546
External Connection Diagram: Busbar Protection Peripheral Unit P742
547
External Connection Diagram: Busbar Protection Peripheral Unit P743
550
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