ABB Relion REB500 Instructions for use

RELION® REB500
Distributed busbar protection REB500
Version 8.3 IEC
Application manual



 

  
a

=
I
;
D


e






-
  

 




 

  
a

=
I
;
D


e






-
  

 
Document ID: 1MRK 505 399-UEN
Issued: May 2019
Revision: B
Product version: 8.3
© Copyright 2019 ABB. All rights reserved

Copyright
This document and parts thereof must not be reproduced or copied without written
permission from ABB, and the contents thereof must not be imparted to a third party, nor
used for any unauthorized purpose.
The software and hardware described in this document is furnished under a license and may
be used or disclosed only in accordance with the terms of such license.
This product includes software developed by the OpenSSL Project for use in theOpenSSL
Toolkit. (http://www.openssl.org/) This product includes cryptographicsoftware written/
developed by: Eric Young ([email protected]) and Tim Hudson([email protected]).
Trademarks
ABB and Relion are registered trademarks of the ABB Group. All other brand or product names
mentioned in this document may be trademarks or registered trademarks of their respective
holders.
Warranty
Please inquire about the terms of warranty from your nearest ABB representative.

Disclaimer
The data, examples and diagrams in this manual are included solely for the concept or product
description and are not to be deemed as a statement of guaranteed properties. All persons
responsible for applying the equipment addressed in this manual must satisfy themselves that
each intended application is suitable and acceptable, including that any applicable safety or
other operational requirements are complied with. In particular, any risks in applications where
a system failure and /or product failure would create a risk for harm to property or persons
(including but not limited to personal injuries or death) shall be the sole responsibility of the
person or entity applying the equipment, and those so responsible are hereby requested to
ensure that all measures are taken to exclude or mitigate such risks.
This document has been carefully checked by ABB but deviations cannot be completely ruled
out. In case any errors are detected, the reader is kindly requested to notify the manufacturer.
Other than under explicit contractual commitments, in no event shall ABB be responsible or
liable for any loss or damage resulting from the use of this manual or the application of the
equipment.

Conformity
This product complies with the directive of the Council of the European Communities on the
approximation of the laws of the Member States relating to electromagnetic compatibility
(EMC Directive 2004/108/EC) and concerning electrical equipment for use within specified
voltage limits (Low-voltage directive 2006/95/EC). This conformity is the result of tests
conducted by ABB in accordance with the product standards EN 50263 and EN 60255-26 for
the EMC directive, and with the product standards EN 60255-1 and EN 60255-27 for the low
voltage directive. The product is designed in accordance with the international standards of
the IEC 60255 series.

Table of contents
Section 1 Introduction.................................................................................................... 7
1.1 This manual....................................................................................................................................7
1.2 Intended audience........................................................................................................................ 7
1.3 Product documentation.............................................................................................................. 7
1.4 Symbols and conventions........................................................................................................... 7
1.4.1 Symbols........................................................................................................................................ 7
1.4.2 Document conventions............................................................................................................. 8
Section 2 Safety information.........................................................................................9
Section 3 Overview........................................................................................................ 11
3.1 Application....................................................................................................................................11
3.2 System capacity.......................................................................................................................... 11
Section 4 Software........................................................................................................ 15
4.1 System software REBSYS..........................................................................................................15
4.2 Customer’s database.................................................................................................................15
4.3 Human/machine interface program HMI500....................................................................... 15
4.4 Local human/machine interface (local HMI)......................................................................... 15
4.5 Station monitoring system (SMS)...........................................................................................15
4.6 Station automation system (SAS)...........................................................................................16
Section 5 Signal acquisition and processing..............................................................17
5.1 Analogue inputs.......................................................................................................................... 17
5.2 Maximum prolongation principle............................................................................................ 17
5.3 Binary inputs................................................................................................................................18
5.4 Binary outputs.............................................................................................................................19
Section 6 Self-supervision............................................................................................ 21
6.1 Diagnostic program................................................................................................................... 21
6.2 Self-supervision system............................................................................................................ 21
6.2.1 Software supervision...............................................................................................................22
6.2.1.1 Supervising the applications............................................................................................ 22
6.2.1.2 Supervision of data transfer via the process bus........................................................ 22
6.2.1.3 Supervision of the protection functions........................................................................23
6.2.1.4 Processing and supervising the binary inputs..............................................................23
6.2.1.5 Enabling binary outputs.................................................................................................... 23
6.2.1.6 Error messages in the event list...................................................................................... 23
6.2.1.7 Starting or restarting the system....................................................................................23
6.2.2 Hardware supervision..............................................................................................................23
6.2.2.1 Supervising the auxiliary supply...................................................................................... 23
6.2.2.2 Microprocessor program and main memories.............................................................24
6.2.2.3 Supervision of the tripping relay coils............................................................................24
Table of contents
Distributed busbar protection REB500 1
Application manual
© Copyright 2019 ABB. All rights reserved

6.2.2.4 Parts not covered by the self-supervision function.....................................................24
6.2.3 Plausibility check......................................................................................................................24
6.2.4 Internal analogue measurement supervision.....................................................................26
6.2.4.1 Wiring of the analogue inputs..........................................................................................26
6.2.4.2 Secondary injection tests..................................................................................................27
Section 7 System Settings........................................................................................... 29
7.1 Intertripping/transfer tripping............................................................................................... 29
7.1.1 Busbar image............................................................................................................................ 29
7.2 Isolator and circuit-breaker positions................................................................................... 30
7.2.1 Supervising isolator and circuit-breaker statuses.............................................................31
7.2.2 Auxiliary contacts..................................................................................................................... 31
7.2.3 Evaluating the isolator and circuit-breaker statuses........................................................31
7.2.4 Isolator alarm............................................................................................................................ 32
7.2.5 Delay............................................................................................................................................32
7.2.6 Blocking by the isolator alarm............................................................................................... 32
7.2.7 Switch inhibit............................................................................................................................ 32
7.2.8 Acknowledging the isolator alarm........................................................................................ 33
7.2.9 Note on isolators and circuit-breakers................................................................................34
7.2.10 Response in the event of bay unit failure............................................................................34
7.3 Bay unit stand-alone mode...................................................................................................... 34
7.3.1 Emergency bay unit operation.............................................................................................. 35
7.4 Enabling the tripping command............................................................................................. 35
Section 8 Busbar protection.........................................................................................37
8.1 Protection zones.........................................................................................................................37
8.2 Measuring principle....................................................................................................................37
8.2.1 Application example................................................................................................................ 38
8.2.2 Safety aspects of the measuring principle.........................................................................40
8.3 Restrained amplitude comparison..........................................................................................41
8.3.1 Amplitude comparison............................................................................................................41
8.3.2 Restraint current.......................................................................................................................41
8.3.3 Operating characteristic........................................................................................................ 43
8.4 Restrained amplitude comparison with CT saturation......................................................44
8.4.1 Application example................................................................................................................44
8.5 Phase comparison......................................................................................................................46
8.6 Case studies: busbar layouts...................................................................................................48
8.6.1 Busbar with just two bays......................................................................................................48
8.6.2 Busbar with several bays........................................................................................................48
8.6.2.1 Case a: CT circuit fault on Bay 1.......................................................................................48
8.6.2.2 Case b: CT circuit fault on Bay 2...................................................................................... 48
8.6.2.3 Case c: CT circuit fault on Bay 3.......................................................................................48
8.6.2.4 Influence of the phase comparison function................................................................49
8.6.2.5 Summary.............................................................................................................................. 49
8.6.3 Busbar fault with through current........................................................................................49
8.6.3.1 Case a: Through current....................................................................................................49
8.6.3.2 Case b: Loop current.......................................................................................................... 51
Table of contents
2Distributed busbar protection REB500
Application manual
© Copyright 2019 ABB. All rights reserved

8.7 Differential current supervision...............................................................................................51
Section 9 Special applications of BBP.........................................................................53
9.1 Neutral current measurement................................................................................................. 53
9.2 Blocking measurement of certain CTs...................................................................................56
9.2.1 Bus-tie breaker functions....................................................................................................... 56
9.2.1.1 When the bus-tie breaker is open................................................................................... 56
9.2.1.2 In the event of a protection function (BBP, BFP or EFP) tripping this CB............... 57
9.2.1.3 Short-circuiting of a CT..................................................................................................... 58
9.2.2 Feeder circuit-breakers.......................................................................................................... 60
9.2.3 Breaker reclaim time................................................................................................................ 61
9.2.3.1 Example of when the reclaim time is set too short..................................................... 62
9.2.4 CB CLOSE command (manual close signal)........................................................................ 62
9.2.4.1 Example of a CLOSE CB signal which was not registered..........................................63
9.3 Check zone protection for release of BBP.............................................................................63
9.3.1 Protection zones...................................................................................................................... 64
9.3.2 Measurement principle........................................................................................................... 64
9.3.2.1 Differential current (IDiff)...................................................................................................65
9.3.2.2 Stabilisation factor ( k ).......................................................................................................65
9.3.2.3 Operating characteristic...................................................................................................65
9.3.3 Check zone................................................................................................................................ 66
9.3.4 Application of check zone protection.................................................................................. 67
9.3.5 Substation configuration....................................................................................................... 67
9.3.6 Maintenance conditions in connection with CzBBP......................................................... 68
Section 10 Breaker failure protection (BFP)................................................................ 69
10.1 Current setting........................................................................................................................... 69
10.1.1 Iron core transformers (Class TPX) and transformers with residual flux air gap
(Class TPY).................................................................................................................................69
10.1.2 Linearized current transformers (TPZ).................................................................................71
10.2 Time-grading a single or two-stage BFP................................................................................71
10.2.1 Case 1: Tripping by main protection successful.................................................................71
10.2.2 Case 2: Backup trip by BFP..................................................................................................... 72
10.2.3 Case 3: Intertripping of surrounding circuit-breakers by BFP........................................ 72
10.2.4 Timer t1 setting......................................................................................................................... 73
10.2.5 Timer t2 setting.........................................................................................................................73
10.2.6 Maximum time t1max for backup tripping............................................................................74
10.2.7 Maximum time t2max for intertripping................................................................................. 74
10.3 Logic type.....................................................................................................................................75
10.4 BFP L0 system............................................................................................................................. 75
10.4.1 Current setting BFP L0............................................................................................................75
10.4.1.1 Neutral current I0 caused by CT saturation...................................................................76
10.4.1.2 Neutral current I0 caused by an open CT circuit........................................................... 77
10.4.1.3 CT inaccuracies................................................................................................................... 78
10.4.2 Time grading for BFP L0 system...........................................................................................78
10.5 External start of BFP..................................................................................................................78
Table of contents
Distributed busbar protection REB500 3
Application manual
© Copyright 2019 ABB. All rights reserved

10.6 BFP setting Active for CB open ................................................................................................78
10.7 BFP start input supervision...................................................................................................... 79
Section 11 Additional protection features...................................................................81
11.1 Enabling tripping commands ..................................................................................................81
11.1.1 Example 1: BBP function tripping enabled by external undervoltage relay.................. 81
11.1.1.1 Problem.................................................................................................................................81
11.1.1.2 Solution.................................................................................................................................81
11.1.1.3 Result.....................................................................................................................................82
11.1.2 Example 2: EFP function tripping enabled by the internal undervoltage function.....82
11.1.2.1 Problem.................................................................................................................................82
11.1.2.2 Solution.................................................................................................................................83
11.1.2.3 Result.....................................................................................................................................83
11.1.3 Example 3: BBP tripping enabled by the internal undervoltage function.....................84
11.1.3.1 Problem................................................................................................................................ 84
11.1.3.2 Solution................................................................................................................................ 84
11.1.3.3 Result.................................................................................................................................... 84
11.1.4 Example 4: BBP function tripping enabled by the internal undervoltage
function without VTs on the busbars.................................................................................. 84
11.1.4.1 Problem................................................................................................................................ 84
11.1.4.2 Solution.................................................................................................................................85
11.1.4.3 Result.................................................................................................................................... 85
11.1.5 Example 5: BBP neutral measuring system enabled by the internal
undervoltage functio...............................................................................................................86
11.1.5.1 Problem................................................................................................................................ 86
11.1.5.2 Solution................................................................................................................................ 86
11.1.5.3 Result.................................................................................................................................... 86
Section 12 1½ breaker schemes and duplex stations................................................ 87
12.1 1½ breaker scheme with 3 CTs per diameter....................................................................... 88
12.1.1 T zone protection with isolator Q6 closed..........................................................................88
12.1.2 T zone protection with isolator Q6 open............................................................................ 88
12.1.2.1 Line........................................................................................................................................ 88
12.1.2.2 Transformer feeder............................................................................................................89
12.2 1½ breaker scheme with 6 CTs per diameter.......................................................................89
12.3 1½ breaker scheme with 5 CTs per diameter.......................................................................90
12.4 1½ breaker scheme with 8 CTs per diameter....................................................................... 91
12.5 1½ breaker scheme with only BBP function.......................................................................... 91
12.6 Duplex station............................................................................................................................. 92
12.7 Assignment of bay units........................................................................................................... 93
Section 13 Complex stations......................................................................................... 95
13.1 BBP and BFP in stations with a bypass busbar....................................................................95
13.2 Busbars with bus-ties in series............................................................................................... 95
13.3 Switchgear bays as bus-tie or feeder circuit-breaker........................................................ 98
13.4 Control using 11105_External TRIP......................................................................................... 99
13.4.1 1½ breaker scheme..................................................................................................................99
Table of contents
4Distributed busbar protection REB500
Application manual
© Copyright 2019 ABB. All rights reserved

13.4.2 Bypass mode.............................................................................................................................99
13.4.3 Bypass isolator....................................................................................................................... 100
Table of contents
Distributed busbar protection REB500 5
Application manual
© Copyright 2019 ABB. All rights reserved

6

Section 1 Introduction
1.1 This manual
GUID-B02860D3-0AEC-4D56-85D1-FE85D66A1042 v2
The Application manual contains application descriptions and setting guidelines for the
REB500. The manual can be used to find out when and for what purpose a typical protection
function can be used. The manual can also be used when calculating settings.
1.2 Intended audience
GUID-6E3738BC-FDAB-4ACB-9DBC-442FA6048F2F v1
This manual addresses the protection and control engineer responsible for planning, pre-
engineering and engineering.
The protection and control engineer must be experienced in electrical power engineering and
have knowledge of related technology, such as protection schemes and communication
principles.
1.3 Product documentation
GUID-91F0A03F-D1AF-4695-A239-1FC87E7459EE v2
REB500 manuals Document numbers
Product guide 1MRK 505 402-BEN
Application manual 1MRK 505 399-UEN
Technical manual 1MRK 505 400-UEN
Operation manual 1MRK 500 132-UEN
Engineering manual 1MRK 511 452-UEN
Commissioning manual 1MRK 505 401-UEN
Application manual for bay protection functions 1MRK 505 403-UEN
Technical manual for bay protection functions 1MRK 505 406-UEN
Cyber security deployment guideline 1MRK 511 453-UEN
Communication protocol manual IEC61850 1MRK 511 450-UEN
Communication protocol manual IEC60870-5-103 1MRK 511 451-UEN
Getting started guide 1MRK 505 404-UEN
1.4 Symbols and conventions
1.4.1 Symbols GUID-4F7DD10A-DEE5-4297-8697-B8AAB5E3262F v2
The electrical warning icon indicates the presence of a hazard which could
result in electrical shock.
1MRK 505 399-UEN B Section 1
Introduction
Distributed busbar protection REB500 7
Application manual
© Copyright 2019 ABB. All rights reserved

The warning icon indicates the presence of a hazard which could result in
personal injury.
The caution icon indicates important information or warning related to the
concept discussed in the text. It might indicate the presence of a hazard which
could result in corruption of software or damage to equipment or property.
The information icon alerts the reader of important facts and conditions.
The tip icon indicates advice on, for example, how to design your project or
how to use a certain function.
Although warning hazards are related to personal injury, it is necessary to understand that
under certain operational conditions, operation of damaged equipment may result in
degraded process performance leading to personal injury or death. Therefore, comply fully
with all warning and caution notices.
1.4.2 Document conventions GUID-37C3ACF4-BD79-43C6-B37E-24B38EE69301 v2
A particular convention may not be used in this manual.
• Abbreviations and acronyms in this manual are spelled out in the glossary. The glossary
also contains definitions of important terms.
• Push button navigation in the LHMI menu structure is presented by using the push button
icons.
For example, to navigate the options, use and .
• HMI menu paths are presented in bold.
For example, select Main menu/Settings.
• Signal names are presented in bold.
The signal 21120_EXT_TEST_TRIP can be set and reset via the LHMI Test Trip menu.
• Parameter names and parameter values are presented in italics.
For example, the default value of the
Operation setting is Not inverted .
• Section references are presented with the respective section numbers.
For example, see Section 1.4.2 for more details about document conventions.
Section 1 1MRK 505 399-UEN B
Introduction
8Distributed busbar protection REB500
Application manual
© Copyright 2019 ABB. All rights reserved

Section 2 Safety information
GUID-7CDA9FB7-5CD6-4BD5-A1D2-AAB8E7BF87A3 v2
Dangerous voltages can occur on the connectors, even though the auxiliary
voltage has been disconnected.
Non-observance can result in death, personal injury or substantial property
damage.
Only a competent electrician is allowed to carry out the electrical installation.
National and local electrical safety regulations must always be followed.
The frame of the IEDs has to be carefully earthed.
Whenever changes are made in the IEDs, measures should be taken to avoid
inadvertent tripping.
The IEDs contain components which are sensitive to electrostatic discharge.
Unnecessary touching of electronic components must therefore be avoided.
1MRK 505 399-UEN B Section 2
Safety information
Distributed busbar protection REB500 9
Application manual
© Copyright 2019 ABB. All rights reserved

10

Section 3 Overview
GUID-923D7F2A-9F9D-4979-96E0-697D0BF1C484 v2
The digital busbar system REB500 belongs to the generation of fully digital protection devices,
that is, the analogue-to-digital conversion of the input variables takes place immediately after
the input transformers and all further processing of the resulting digital signals is performed
by programmable microprocessors.
The main features which enable the REB500 to fully satisfy the demands placed on a modern
protective device with respect to cost-effectiveness and functionality are compact design, just
a few different types of hardware units, modular software and continuous self-supervision and
diagnosis.
The structure of the protection system is bay-oriented. The bay units may be located close to
the switchgear in control and protection cubicles or in a central relay room. Distributed bay
units are connected to the central unit by an optical fiber process bus. The central unit collects
all the data and executes the protection algorithms and auxiliary functions at station level.
The standard application of the protection system is that of busbar protection. Provision is
made, however for integrating optional functions to detect, for example, breaker failure, end
zone faults, overcurrent and circuit-breaker pole discrepancy.
3.1 Application
GUID-5A7BC0AC-5DFF-4843-BF91-C2ABB78ED4D3 v1
The digital busbar protection has been designed for the high-speed selective protection of
MV, HV and EHV busbars in 50 and 60 Hz power systems. Because of the flexible and modular
structure of both hardware and software, the protection can be simply configured to suit the
particular busbar arrangement.
It is thus able to protect all busbar layouts, whether a single set of busbars or quadruple
busbars with a transfer busbar. It is similarly applicable to ring busbars and 1½ breaker
schemes. The maximum capacity for a quadruple busbar system is 60 feeders (60 bay units)
with a maximum of 7 longitudinal breakers, 8 sections of busbars and 32 protection zones.
The protection system detects phase and ground faults in solidly grounded and impedance
grounded power systems. The digital scheme only evaluates the primary system currents. The
main CTs do not have to fulfill any special requirements as is the case, for example, with a
high-impedance scheme. Even in the event of saturation of the main CTs, the protection is still
able to discriminate correctly between internal and external faults.
3.2 System capacity
GUID-62AB81BD-ECEA-4C1D-92BF-359861ED5B83 v2
The protection system is applicable to all busbar layouts, whether a single set of busbars or
quadruple busbars with a transfer busbar. It is similarly applicable to 1½ breaker schemes, ring
busbars and duplex stations. The maximum capacity is 60 bay units (one per feeder or one per
set of CTs on a bus-tie breaker; in the case of a longitudinal isolator, either a separate bay unit
is needed or alternatively it is included in an existing bay unit). Up to 32 protection zones can
be selectively protected and tripped.
It is possible to apply REB500 system without making use of its basic busbar protection
function (for example, as an independent breaker failure and end zone protection).
1MRK 505 399-UEN B Section 3
Overview
Distributed busbar protection REB500 11
Application manual
© Copyright 2019 ABB. All rights reserved

The application of the protection system in complex stations, 1½ breaker
schemes and duplex configurations is described separately in Section 12.
The following are examples of the principal busbar configurations:
I
12000001-IEC18000251-1-en.vsd
IEC18000251 V1 EN-US
Figure 1: Single busbar
I
II
12000002-IEC18000252-1-en.vsd
IEC18000252 V1 EN-US
Figure 2: Double busbar
I
II
Transfer
busbar
12000003-IEC18000253-1-en.vsd
IEC18000253 V1 EN-US
Figure 3: Double busbar with transfer busbar
Section 3 1MRK 505 399-UEN B
Overview
12 Distributed busbar protection REB500
Application manual
© Copyright 2019 ABB. All rights reserved

II
I
12000004-IEC18000254-1-en.vsd
IEC18000254 V1 EN-US
Figure 4: 1½ breaker scheme
12000005-IEC18000255-1-en.vsd
IEC18000255 V1 EN-US
Figure 5: Ring busbar
1MRK 505 399-UEN B Section 3
Overview
Distributed busbar protection REB500 13
Application manual
© Copyright 2019 ABB. All rights reserved

II
I
12000006-IEC18000256-1-en.vsd
IEC18000256 V1 EN-US
Figure 6: Duplex station
Section 3 1MRK 505 399-UEN B
Overview
14 Distributed busbar protection REB500
Application manual
© Copyright 2019 ABB. All rights reserved