ABB RELION 650 SERIES Instructions for use

Relion® 650 SERIES
Transformer protection RET650
Version 1.1 IEC
Application manual

Document ID: 1MRK 504 124-UEN
Issued: May 2020
Revision: B
Product version: 1.1
© Copyright 2011 ABB Power Grids. All rights reserved

Copyright
This document and parts thereof must not be reproduced or copied without written
permission from ABB Power Grids, 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 the OpenSSL
Toolkit. (https://www.openssl.org/) This product includes cryptographic software 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 Power Grids 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 Power Grids 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
Power Grids 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 IED is designed in accordance with the international standards of the
IEC 60255 series. The DNP protocol implementation in the IED conforms to "DNP3 Intelligent
Electronic Device (IED) Certification Procedure Subset Level 2", available at www.dnp.org.

Table of contents
Section 1 Introduction...................................................................................................11
1.1 This manual.................................................................................................................................. 11
1.2 Intended audience...................................................................................................................... 11
1.3 Product documentation.............................................................................................................11
1.3.1 Product documentation set....................................................................................................11
1.3.2 Document revision history......................................................................................................12
1.3.3 Related documents.................................................................................................................. 13
1.4 Symbols and conventions......................................................................................................... 13
1.4.1 Safety indication symbols.......................................................................................................13
1.4.2 Manual conventions................................................................................................................. 14
Section 2 Application.................................................................................................... 15
2.1 RET650 application.................................................................................................................... 15
2.2 Available functions.....................................................................................................................20
2.2.1 Main protection functions......................................................................................................20
2.2.2 Back-up protection functions................................................................................................20
2.2.3 Control and monitoring functions........................................................................................ 21
2.2.4 Designed to communicate..................................................................................................... 23
2.2.5 Basic IED functions.................................................................................................................. 24
2.3 RET650 application examples..................................................................................................25
2.3.1 Adaptation to different applications................................................................................... 25
2.3.2 Two-winding HV/MV, Y/Δ-transformer...............................................................................25
2.3.3 Two-winding HV/MV, Y/Y-transformer...............................................................................26
2.3.4 Functionality table................................................................................................................... 26
2.3.5 Three-winding HV/MV1/MV2, Y/Y/Δ-transformer............................................................28
2.3.6 Three-winding HV/MV1/MV2, Y/Y/Δ-transformer............................................................29
2.3.7 Functionality table................................................................................................................... 30
Section 3 RET650 setting examples............................................................................33
3.1 Setting example for a two-winding HV/MV transformer, Y/Δ-transformer.................. 33
3.1.1 Calculating general settings for analogue inputs 8I 2U................................................... 34
3.1.2 Calculating settings for global base values GBASVAL......................................................35
3.1.3 Calculating settings for transformer differential protection T2WPDIF .......................35
3.1.4 Calculating settings for restricted earth fault protection REFPDIF ............................. 38
3.1.5 Calculating settings for instantaneous phase overcurrent protection, HV-side,
PHPIOC ...................................................................................................................................... 39
3.1.6 Calculating settings for four step phase overcurrent protection, HV-side,
OC4PTOC ..................................................................................................................................40
3.1.6.1 Calculating general settings ........................................................................................... 40
3.1.6.2 Calculating settings for step 1.........................................................................................40
3.1.7 Calculating settings for four step phase overcurrent protection, LV-side
OC4PTOC .................................................................................................................................. 42
Table of contents
Transformer protection RET650 1
Application manual
© Copyright 2011 ABB Power Grids. All rights reserved

3.1.7.1 Calculating general settings............................................................................................ 43
3.1.7.2 Calculating settings for step 1 ........................................................................................43
3.1.7.3 Calculating settings for step 2........................................................................................ 44
3.1.8 Calculating settings for four step residual overcurrent protection HV-side
EF4PTOC ................................................................................................................................... 45
3.1.8.1 Calculating general settings............................................................................................ 46
3.1.8.2 Calculating settings for step 1.........................................................................................46
3.1.8.3 Calculating settings for step 2........................................................................................ 48
3.1.8.4 Calculating settings for step 4........................................................................................ 49
3.1.9 Calculating settings for two step residual overvoltage protection LV-side,
ROV2PTOV ................................................................................................................................ 49
3.1.10 Calculating settings for breaker failure protection HV-side, CCRBRF ......................... 50
3.1.11 Calculating settings for breaker failure protection LV-side CCRBRF ........................... 51
Section 4 Analog inputs................................................................................................ 53
4.1 Introduction.................................................................................................................................53
4.2 Setting guidelines...................................................................................................................... 53
4.2.1 Setting of the phase reference channel...............................................................................53
4.2.1.1 Example................................................................................................................................ 53
4.2.1.2 Setting of current channels.............................................................................................. 53
4.2.1.3 Example 1............................................................................................................................. 54
4.2.1.4 Example 2............................................................................................................................. 55
4.2.1.5 Examples how to connect, configure and set CT inputs for most commonly
used CT connections..........................................................................................................55
4.2.1.6 Example how to connect star connected three-phase CT set to the IED............... 56
4.2.1.7 Example how to connect delta connected three-phase CT set to the IED............. 58
4.2.1.8 Example how to connect single-phase CT to the IED................................................. 60
4.2.1.9 Setting of voltage channels..............................................................................................62
4.2.1.10 Example................................................................................................................................ 62
4.2.1.11 Examples how to connect, configure and set VT inputs for most commonly
used VT connections..........................................................................................................63
4.2.1.12 Examples how to connect three phase-to-earth connected VTs to the IED...........63
4.2.1.13 Example how to connect two phase-to-phase connected VTs to the IED..............65
4.2.1.14 Example how to connect the open delta VT to the IED for high impedance
earthed or unearthed.........................................................................................................67
4.2.1.15 Example how to connect the open delta VT to the IED for low impedance
earthed or solidly earthed power systems....................................................................68
4.2.1.16 Example how to connect the neutral point VT to the IED.......................................... 70
Section 5 Local human-machine interface................................................................. 73
5.1 Local HMI...................................................................................................................................... 73
5.1.1 Display........................................................................................................................................ 73
5.1.2 LEDs............................................................................................................................................ 75
5.1.3 Keypad........................................................................................................................................ 75
5.1.4 Local HMI functionality........................................................................................................... 78
5.1.4.1 Protection and alarm indication...................................................................................... 78
5.1.4.2 Parameter management .................................................................................................. 80
5.1.4.3 Front communication........................................................................................................80
Table of contents
2Transformer protection RET650
Application manual
© Copyright 2011 ABB Power Grids. All rights reserved

5.1.4.4 Single-line diagram.............................................................................................................81
Section 6 Differential protection................................................................................ 83
6.1 Transformer differential protection.......................................................................................83
6.1.1 Identification.............................................................................................................................83
6.1.2 Application.................................................................................................................................83
6.1.3 Setting guidelines....................................................................................................................84
6.1.3.1 Inrush restraint methods..................................................................................................84
6.1.3.2 Overexcitation restraint method.................................................................................... 84
6.1.3.3 Cross-blocking between phases..................................................................................... 84
6.1.3.4 Restrained and unrestrained differential protection..................................................84
6.1.3.5 Elimination of zero sequence currents.......................................................................... 86
6.1.3.6 External/Internal fault discriminator............................................................................. 87
6.1.3.7 Differential current alarm................................................................................................. 88
6.1.3.8 Switch onto fault feature..................................................................................................88
6.1.4 Setting example....................................................................................................................... 88
6.1.4.1 Summary and conclusions................................................................................................88
6.2 Restricted earth-fault protection, low impedance REFPDIF............................................. 90
6.2.1 Identification............................................................................................................................ 90
6.2.2 Application................................................................................................................................ 90
6.2.2.1 Application examples......................................................................................................... 91
6.2.3 Setting guidelines.................................................................................................................... 95
6.2.3.1 Setting and configuration................................................................................................ 95
6.2.3.2 Settings................................................................................................................................ 96
6.3 1Ph High impedance differential protection HZPDIF .........................................................96
6.3.1 Identification............................................................................................................................ 96
6.3.2 Application.................................................................................................................................97
6.3.2.1 The basics of the high impedance principle..................................................................97
6.3.3 Connection examples............................................................................................................ 102
6.3.3.1 Connections for 1Ph restricted earth fault and high impedance differential
protection...........................................................................................................................102
6.3.4 Setting guidelines.................................................................................................................. 103
6.3.4.1 Configuration.................................................................................................................... 103
6.3.4.2 Settings of protection function.....................................................................................103
6.3.4.3 Restricted earth fault protection REF.......................................................................... 104
6.3.4.4 Alarm level operation....................................................................................................... 105
Section 7 Impedance protection............................................................................... 107
Section 8 Current protection..................................................................................... 109
8.1 Instantaneous phase overcurrent protection PHPIOC..................................................... 109
8.1.1 Identification...........................................................................................................................109
8.1.2 Application.............................................................................................................................. 109
8.1.3 Setting guidelines.................................................................................................................. 109
8.1.3.1 Meshed network without parallel line...........................................................................110
8.1.3.2 Meshed network with parallel line..................................................................................111
8.2 Four step phase overcurrent protection OC4PTOC...........................................................112
Table of contents
Transformer protection RET650 3
Application manual
© Copyright 2011 ABB Power Grids. All rights reserved

8.2.1 Identification........................................................................................................................... 112
8.2.2 Application............................................................................................................................... 113
8.2.3 Setting guidelines...................................................................................................................113
8.2.3.1 Settings for steps 1 to 4 ................................................................................................. 114
8.2.3.2 Current applications.........................................................................................................116
8.3 Instantaneous residual overcurrent protection EFPIOC................................................... 121
8.3.1 Identification........................................................................................................................... 121
8.3.2 Application............................................................................................................................... 121
8.3.3 Setting guidelines...................................................................................................................121
8.4 Four step residual overcurrent protection EF4PTOC........................................................123
8.4.1 Identification........................................................................................................................... 123
8.4.2 Application...............................................................................................................................124
8.4.3 Setting guidelines.................................................................................................................. 125
8.4.3.1 Settings for steps 1 and 4 .............................................................................................. 125
8.4.3.2 Common settings for all steps.......................................................................................126
8.4.3.3 2nd harmonic restrain......................................................................................................128
8.4.3.4 Transformer application example................................................................................. 128
8.5 Thermal overload protection, two time constants TRPTTR.............................................132
8.5.1 Identification........................................................................................................................... 132
8.5.2 Application...............................................................................................................................132
8.5.3 Setting guideline.....................................................................................................................133
8.6 Breaker failure protection CCRBRF.......................................................................................134
8.6.1 Identification...........................................................................................................................134
8.6.2 Application...............................................................................................................................135
8.6.3 Setting guidelines.................................................................................................................. 135
8.7 Pole discordance protection CCRPLD ..................................................................................137
8.7.1 Identification........................................................................................................................... 137
8.7.2 Application............................................................................................................................... 137
8.7.3 Setting guidelines.................................................................................................................. 138
8.8 Directional over-/under-power protection GOPPDOP/GUPPDUP................................. 138
8.8.1 Application...............................................................................................................................138
8.8.2 Directional over-power protection GOPPDOP................................................................. 140
8.8.2.1 Identification.....................................................................................................................140
8.8.2.2 Setting guidelines............................................................................................................ 140
8.8.3 Directional under-power protection GUPPDUP............................................................... 144
8.8.3.1 Identification..................................................................................................................... 144
8.8.3.2 Setting guidelines.............................................................................................................144
8.9 Negative sequence based overcurrent function DNSPTOC.............................................147
8.9.1 Identification...........................................................................................................................147
8.9.2 Application...............................................................................................................................147
8.9.3 Setting guidelines.................................................................................................................. 147
Section 9 Voltage protection.....................................................................................149
9.1 Two step undervoltage protection UV2PTUV ....................................................................149
9.1.1 Identification...........................................................................................................................149
9.1.2 Application...............................................................................................................................149
Table of contents
4Transformer protection RET650
Application manual
© Copyright 2011 ABB Power Grids. All rights reserved