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Section 1

1MRK 511 393-UEN A

Introduction

6

670 series 2.2 IEC

Communication protocol manual

Содержание IEC 61850 Edition 2

Страница 1: ...RELION 670 SERIES IEC 61850 Edition 2 670 series Version 2 2 Communication protocol manual ...

Страница 2: ......

Страница 3: ...Document ID 1MRK 511 393 UEN Issued October 2017 Revision A Product version 2 2 1 Copyright 2017 ABB All rights reserved ...

Страница 4: ...erms of such license This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit http www openssl org This product includes cryptographic software written developed by Eric Young eay cryptsoft com and Tim Hudson tjh cryptsoft com Trademarks ABB and Relion are registered trademarks of the ABB Group All other brand or product names mentioned in this document may be...

Страница 5: ...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 compl...

Страница 6: ...nd 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 standard 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 ...

Страница 7: ...substation section 24 The communication section 25 The IED section 26 Tool concept 28 Engineering concept in IEC 61850 6 30 Section 4 Communication profile 31 Section 5 Supported services 33 Section 6 Data sets and control blocks 37 Data sets 37 Report control block URCB BRCB 39 GOOSE Control Blocks GoCB 42 Section 7 Logical node data model 45 Common data objects in each logical node 45 IEC 61850 ...

Страница 8: ...Mapping possibilities and requirements 50 Section 9 Glossary 53 Glossary 53 Table of contents 2 670 series 2 2 IEC Communication protocol manual ...

Страница 9: ...E4F CC762FE28A3A v11 This manual is intended for the communication system engineer or system integrator responsible for pre engineering and engineering the communication setup in a substation from an IED perspective The system engineer or system integrator must have a basic knowledge of communication in protection and control systems and thorough knowledge of the specific communication protocol 1M...

Страница 10: ...o the project structure The manual also recommends a sequence for the engineering of protection and control functions LHMI functions as well as communication engineering for IEC 60870 5 103 IEC 61850 DNP3 LON and SPA The installation manual contains instructions on how to install the IED The manual provides procedures for mechanical and electrical installation The chapters are organized in the chr...

Страница 11: ...ls setting parameters and technical data sorted per function The manual can be used as a technical reference during the engineering phase installation and commissioning phase and during normal service The communication protocol manual describes the communication protocols supported by the IED The manual concentrates on the vendor specific implementations The point list manual describes the outlook...

Страница 12: ...ED670 Document numbers Application manual 1MRK 505 376 UEN Commissioning manual 1MRK 505 378 UEN Product guide 1MRK 505 379 BEN Technical manual 1MRK 505 377 UEN Type test certificate 1MRK 505 379 TEN Documents related to REG670 Document numbers Application manual 1MRK 502 071 UEN Commissioning manual 1MRK 502 073 UEN Product guide 1MRK 502 074 BEN Technical manual 1MRK 502 072 UEN Type test certi...

Страница 13: ...EN 670 series manuals Document numbers Operation manual 1MRK 500 127 UEN Engineering manual 1MRK 511 398 UEN Installation manual 1MRK 514 026 UEN Communication protocol manual DNP3 1MRK 511 391 UUS Communication protocol manual IEC 60870 5 103 1MRK 511 394 UEN Communication protocol manual IEC 61850 Edition 1 1MRK 511 392 UEN Communication protocol manual IEC 61850 Edition 2 1MRK 511 393 UEN Commu...

Страница 14: ...he 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 It is important that the user fully complies with all warn...

Страница 15: ...at are only settable via the PST ECT or LHMI If an internal signal path cannot be drawn with a continuous line the suffix int is added to the signal name to indicate where the signal starts and continues Signal paths that extend beyond the logic diagram and continue in another diagram have the suffix cont Illustrations are used as an example and might show other products than the one the manual de...

Страница 16: ...C BFPTRC_F11 BFPTRC BFPTRC BFPTRC_F12 BFPTRC BFPTRC BFPTRC_F13 BFPTRC BFPTRC BFPTRC_F14 BFPTRC BFPTRC BFPTRC_F15 BFPTRC BFPTRC BFPTRC_F16 BFPTRC BFPTRC BFPTRC_F17 BFPTRC BFPTRC BFPTRC_F18 BFPTRC BFPTRC BFPTRC_F19 BFPTRC BFPTRC BFPTRC_F20 BFPTRC BFPTRC BFPTRC_F21 BFPTRC BFPTRC BFPTRC_F22 BFPTRC BFPTRC BFPTRC_F23 BFPTRC BFPTRC BFPTRC_F24 BFPTRC BFPTRC BICPTRC_01 BICPTRC BICPTRC BICPTRC_02 BICPTRC BI...

Страница 17: ...B17 BUSPTRC BUSPTRC BUSPTRC_B18 BUSPTRC BUSPTRC BUSPTRC_B19 BUSPTRC BUSPTRC BUSPTRC_B20 BUSPTRC BUSPTRC BUSPTRC_B21 BUSPTRC BUSPTRC BUSPTRC_B22 BUSPTRC BUSPTRC BUSPTRC_B23 BUSPTRC BUSPTRC BUSPTRC_B24 BUSPTRC BUSPTRC BUTPTRC_B1 BUTPTRC BBTPLLN0 BUTPTRC BUTPTRC_B2 BUTPTRC BUTPTRC BUTPTRC_B3 BUTPTRC BUTPTRC BUTPTRC_B4 BUTPTRC BUTPTRC BUTPTRC_B5 BUTPTRC BUTPTRC BUTPTRC_B6 BUTPTRC BUTPTRC BUTPTRC_B7 BU...

Страница 18: ...TRC HOLPTOV HPH1PTOV PH3PTOC PH3PTUC RP3PDOP CCPDSC CCRPLD CCPDSC CCRBRF CCRBRF CCRBRF CCRWRBRF CCRWRBRF CCRWRBRF CCSRBRF CCSRBRF CCSRBRF CCSSPVC CCSRDIF CCSSPVC CMMXU CMMXU CMMXU CMSQI CMSQI CMSQI COUVGAPC COUVLLN0 COUVPTOV COUVPTUV COUVPTOV COUVPTUV CVGAPC GF2LLN0 GF2MMXN GF2PHAR GF2PTOV GF2PTUC GF2PTUV GF2PVOC PH1PTRC GF2MMXN GF2PHAR GF2PTOV GF2PTUC GF2PTUV GF2PVOC PH1PTRC CVMMXN CVMMXN CVMMXN ...

Страница 19: ...FTAQFVR FUFSPVC SDDRFUF FUFSPVC SDDSPVC GENPDIF GENPDIF GENGAPC GENPDIF GENPHAR GENPTRC GOPPDOP GOPPDOP GOPPDOP PH1PTRC GRPTTR GRPTTR GRPTTR GSPTTR GSPTTR GSPTTR GUPPDUP GUPPDUP GUPPDUP PH1PTRC HZPDIF HZPDIF HZPDIF INDCALCH INDCALH INDCALH ITBGAPC IB16FCVB ITBGAPC L3CPDIF L3CPDIF L3CGAPC L3CPDIF L3CPHAR L3CPTRC L4CPDIF L4CLLN0 L4CPDIF L4CPTRC LLN0 L4CGAPC L4CPDIF L4CPSCH L4CPTRC L4UFCNT L4UFCNT L4...

Страница 20: ...SPTR LOLSPTR LOLSPTR LOVPTUV LOVPTUV LOVPTUV LPHD LPHD LPTTR LPTTR LPTTR LT3CPDIF LT3CPDIF LT3CGAPC LT3CPDIF LT3CPHAR LT3CPTRC LT6CPDIF LT6CPDIF LT6CGAPC LT6CPDIF LT6CPHAR LT6CPTRC MVGAPC MVGGIO MVGAPC NS2PTOC NS2LLN0 NS2PTOC NS2PTRC NS2PTOC NS2PTRC NS4PTOC EF4LLN0 EF4PTRC EF4RDIR GEN4PHAR PH1PTOC EF4PTRC EF4RDIR PH1PTOC O2RWPTOV GEN2LLN0 O2RWPTOV PH1PTRC O2RWPTOV PH1PTRC OC4PTOC OC4LLN0 GEN4PHAR ...

Страница 21: ...IPTRC ROV2PTOV GEN2LLN0 PH1PTRC ROV2PTOV PH1PTRC ROV2PTOV SAPFRC SAPFRC SAPFRC SAPTOF SAPTOF SAPTOF SAPTUF SAPTUF SAPTUF SCCVPTOC SCCVPTOC SCCVPTOC SCHLCCH SCHLCCH SCHLCCH SCILO SCILO SCILO SCSWI SCSWI SCSWI SDEPSDE SDEPSDE SDEPSDE SDEPTOC SDEPTOV SDEPTRC SESRSYN RSY1LLN0 AUT1RSYN MAN1RSYN SYNRSYN AUT1RSYN MAN1RSYN SYNRSYN SLGAPC SLGGIO SLGAPC SMBRREC SMBRREC SMBRREC SMPPTRC SMPPTRC SMPPTRC SP16GA...

Страница 22: ...AGAPC TMAGGIO TMAGAPC TPPIOC TPPIOC TPPIOC TR1ATCC TR1ATCC TR1ATCC TR8ATCC TR8ATCC TR8ATCC TRPTTR TRPTTR TRPTTR U2RWPTUV GEN2LLN0 PH1PTRC U2RWPTUV PH1PTRC U2RWPTUV UV2PTUV GEN2LLN0 PH1PTRC UV2PTUV PH1PTRC UV2PTUV VDCPTOV VDCPTOV VDCPTOV VDSPVC VDRFUF VDSPVC VMMXU VMMXU VMMXU VMSQI VMSQI VMSQI VNMMXU VNMMXU VNMMXU VRPVOC VRLLN0 PH1PTRC PH1PTUV VRPVOC PH1PTRC PH1PTUV VRPVOC VSGAPC VSGGIO VSGAPC WRNC...

Страница 23: ...CLLN0 PSFPDIS ZMFPDIS ZMFPTRC ZMMMXU PSFPDIS ZMFPDIS ZMFPTRC ZMMMXU ZMFPDIS ZMFLLN0 PSFPDIS ZMFPDIS ZMFPTRC ZMMMXU PSFPDIS PSFPDIS ZMFPDIS ZMFPTRC ZMMMXU ZMHPDIS ZMHPDIS ZMHPDIS ZMMAPDIS ZMMAPDIS ZMMAPDIS ZMMPDIS ZMMPDIS ZMMPDIS ZMQAPDIS ZMQAPDIS ZMQAPDIS ZMQPDIS ZMQPDIS ZMQPDIS ZMRAPDIS ZMRAPDIS ZMRAPDIS ZMRPDIS ZMRPDIS ZMRPDIS ZMRPSB ZMRPSB ZMRPSB ZSMGAPC ZSMGAPC ZSMGAPC 1MRK 511 393 UEN A Secti...

Страница 24: ...18 ...

Страница 25: ...a standardised semantic which is mandatory This manual describes how the IEC 61850 standard is applied in the IEDs References and brief descriptions of the standard are also included It is assumed that the reader has basic knowledge of the IEC 61850 standard The following parts of the IEC 61850 standard are of importance as they relate to this manual Station Configuration description Language SCL ...

Страница 26: ...th a number of data objects For example a transformer differential or line differential protection because the standard defines only a differential protection Therefore it is possible to adapt the logical node which is defined in the standard as a logical node class The standard defines methods to describe the actually used logical node as a logical node type which is then based upon the logical n...

Страница 27: ...ples and models IEC 61850 7 2 Ed2 0 2010 08 24 English Communication networks and systems for power utility automation Part 7 2 Basic information and communication structure Abstract communication service interface ACSI IEC 61850 7 3 Ed2 0 2010 12 16 English French Communication networks and systems for power utility automation Part 7 3 Basic communication structure Common data classes IEC 61850 7...

Страница 28: ...2 0 2012 12 14 English French Communication networks and systems for power utility automation Part 10 Conformance testing IEC 61850 MICS 1MRG021098 IED series version 2 2 Ed2 MICS Modelling implementation conformance statement IEC 61850 PICS 1MRG021052 IED series version 2 2 Ed2 PICS Protocol implementation conformance statement IEC 61850 PIXIT 1MRG021053 IED series version 2 2 Ed2 PIXIT Protocol ...

Страница 29: ...tributes and enums The system structure is defined by the organization of the plant structure in PCM600 The signal engineering and the signal routing are IET600 tasks signal engineering regarding DS rcb gcb GOOSE subscribers can be done also in PCM600 The IED needs to be configured with PCM600 before the system is configured with IET600 The SCL engineering must be done in an SCL engineering tool T...

Страница 30: ...een the different sections given when an IED is integrated in the substation structure and or in the communication structure All needed logical nodes of an IED are linked to the substation section by the SCL tool A reference to GOOSE Control Blocks GoCB is included in the communication section when GoCB is configured 3 1 The substation section SEMOD129763 4 v4 The substation description in IEC 618...

Страница 31: ...s connected to different subnetworks Access points per IED to subnetworks Address IP address of LAN network is exceptionally part of the address elements Link to GoCB message in transmission direction extended during signal engineering and routing en06000101 vsd IED server Access Point AP Address GSE GoCBs Communication AP IED server Access Point AP Address GSE GoCBs Communication IED server Acces...

Страница 32: ...ay IEDs This functionality is represented by logical nodes of group Information I These are the logical nodes LN ITCI IHMI and ITMI Client IEDs are the receiver of information in monitoring direction and sender of commands control These logical nodes have no data objects They are only used to link the report control blocks BRCBs from the server IEDs They have to read their information about the si...

Страница 33: ...tion of LDs LNs DOs and DAs in an IED A server represents the communication interface to the subnetwork Ethernet One or more logical device s LD are connected to a server A set of logical nodes belong to a LD The LN LLN0 is a special logical node per LD and contains for example the data sets the various control blocks inputs from GOOSE messages In the IED series the data sets and the control block...

Страница 34: ...ctions in SCL contain properties that are to be configured by these tools There is no relation between one section and one specific tool The task of the IED tool is to configure all properties for the IED while the system tool has the task to define the place of the IED in the system and its communication dependencies For example the plant structure in PCM600 results in the subsystem section in SC...

Страница 35: ... control blocks for reporting this means unbuffered buffered reporting and GOOSE and the properties for each report control block Data sets DS are generated automatically in PCM600 Report control blocks RCBs are automatically created in PCM600 only when using templates If client definitions like client ICD are required in the system configuration they are merged into IET600 and connected to the un...

Страница 36: ...d IED Bottom up approach means that the configurations are produced by the IED tool and that are exported as CID or IID files or SCD file to be imported into the system tools IED A IED B IED Z Client A IED tool System tool IEC09000151 2 en vsd Client B IEC09000151 V2 EN US Figure 5 Relation between system and IED tools Regardless of the engineering approach the idea is that the IED tool provides t...

Страница 37: ...C 61850 based communication network has to take these two specifications and adapt their respective product to the requirements and definitions given in the standard To make this profile visible to all other partners so they can check what they can expect and what they have to support the PICS document is defined The PICS contains in a table based form the possibility of a product or product famil...

Страница 38: ...9000153 V1 EN US Figure 7 Overview of functionality and profiles according to IEC 61850 8 1 Out of this content the implementation supports Sampled values according to 9 2LE GOOSE TimeSync using SNTP The peer to peer vertical communication using MMS protocol suite with the T profile TCP IP For each of the above the resulting underlying protocols as stated in Figure 7 See the PICS and PIXIT for mor...

Страница 39: ...ormation on data sets see the PIXIT related documents Substitution Substitution is supported for the respective DATA according to IEC 61850 7 4 that have the substitution attributes defined Setting group control block There is only one setting group control block which is located in LD0 LLN0 Logical Device0 Logical Node 0 Change or edit of some setting values as well as reading of setting values i...

Страница 40: ...age The GOOSE signal is invalidated when GOOSE messages are not received before 2 TAL Time Allowed to Live GOOSE with TAL 0 ms is treated as GOOSE with TAL 100 ms and accepted Note that the data sets that are used or referred to by GOOSE control blocks can only include a data attribute once In other words there may not be the same data attribute in more than one data set When publishing a measured...

Страница 41: ...ng Tool by setting AllowSimulation to Yes IEC 61850 is set to true and GOOSE simulation activates From then on receiving GOOSE with simulation bit set in the GOOSE header is treated as real GOOSE and the original real GOOSE is ignored If you switch the simulated GOOSE off the GOOSE receiver does not automatically switch back to the real original GOOSE Internal GOOSE data is set to invalid because ...

Страница 42: ...ormation IscTrk Control service tracking for integer controlled step position information BacTrk Control service tracking for binary controlled analogue process value Tracking of generic services GenTrk Common service tracking for all services for which no specific tracking data exists For supported generic services see PIXIT Tracking of control block services UrcbTrk Access service tracking for u...

Страница 43: ...data set Figure 8 shows a data set where all position information of the apparatuses of a bay are put into one data set PCM600 will generate default data sets based on the current ACT configuration The default data sets can be modified or removed in the engineering tools No RCBs are created automatically by PCM600 However the configured IEDs are delivered with RCBs for all default data sets or whe...

Страница 44: ... of a data object can will be selected which have the same function constraint FC Data objects with different FC can be selected for a data set For example DOs with FC ST and DOs with FC MX can be member in one data set A single data attribute can be selected when it is specified with a trigger option For example the data attribute stVal of the data object Pos can be selected as a member of a data...

Страница 45: ...additional events stored in the report This feature reduces the number of telegrams transmitted in case of a burst of changes Trigger options The data attributes know three different trigger options dchg qchg dupd Within the BRCB the two other can be defined integrity and general interrogation The attribute Trigger option is a multiple choice and allows to mask the supported trigger options in thi...

Страница 46: ...ne qchg quality change Looking to the possibilities of the quality data attribute type q any changes in the quality description will be transmitted dupd data value update This trigger option give the possibility to define that a transmission should be done on a condition which can be controlled by the application integrity This trigger forces the transmission of all process values defined in the d...

Страница 47: ...ription of the BRCB with selected DataSet configured parameters and selected IEDs is included in the SCL file in the IED section in the LN0 structure for the LD where this LN0 belongs to IEC14000033 1 en vsd CTRL SXCBR1 Pos FC ST CTRL SXSWI1 Pos FC ST CTRL SXSWI2 Pos FC ST CTRL SXSWI3 Pos FC ST CTRL SXSWI4 Pos FC ST LD0 LLN0 AppPos DATA SET IED HSI Client 1 IED NCC GW 1 Client 2 IED NCC GW m Clien...

Страница 48: ...ut data values between IEDs on bay level in horizontal direction through the use of multicast services GOOSE messages enable fast transmission from a publisher to one or several subscribers receivers The GOOSE service model of IEC 61850 7 2 provides the possibility for fast and reliable system wide distribution of input and output data values This implementation uses a specific scheme of re transm...

Страница 49: ...ximum time to wait for the next re transmission If a new message is not received within that time interval the receiver assumes that the association is lost The specific intervals used by any GOOSE publisher are a local issue The timeAllowedtoLive parameter informs subscribers of how long to wait The detection time of lost GOOSE is 2 timeAllowedToLive in the subscriber This allows one lost GOOSE m...

Страница 50: ... the send buffer with their actual value and the message is sent The subscribers who knows the address of this GOOSE message receives the telegram The GOOSE message includes a sequence number to verify that all messages are received Section 6 1MRK 511 393 UEN A Data sets and control blocks 44 670 series 2 2 IEC Communication protocol manual ...

Страница 51: ...o IEC 61850 6 There are LN types based upon LN classes The LN type attributes are called Data Objects or DATA and are in of DO types base upon respective CDC class This allows all partners in the IEC 61850 project who need this LN to understand the LN in all details for the communication part The IEC 61850 standard does not describe the functionality and way of operation Each supplier has to descr...

Страница 52: ...shows the actual state of the function depending on the hierarchy described in clause 6 of IEC 61850 7 4 It is possible that the behavior is influenced also by other sources independent from the Mod for example Insertion of the test handle loss of SV IED configuration tool PCM600 or LHMI In case the setting operation of a function is set to Off from the LHMI or PCM600 the Beh will be set to Off in...

Страница 53: ... Edition 2 RER670 2 2 2 Double click the file 3 Clear the Always ask before opening this file check box 4 Click Open 7 2 2 DO presence condition description GUID 63E36A26 DCFF 49CD 9C58 CE783031532C v2 Table 2 Conditions used by the Logical Node description Condition Description AtLeastOne At least one of marked elements shall be present M Element is mandatory MFcond Not yet defined Mmulti At leas...

Страница 54: ...48 ...

Страница 55: ...or communication Customer specific naming convention for communication can be used Other IEDs and station level equipment can be defined from the customer specific communication model Error tracing of communication can be the same between different installations 8 1 1 Mapping example GUID DD7F097C 1D72 4BA2 8684 61B54EF0D00C v1 FunctionA Non affected function views IED 61850 model Customer 61850 m...

Страница 56: ...s possible at several levels in the structure Logical Node level LN to LN Data Object level DO to DO Data Attribute level DA to DA Custom logical device name LDName can be used for addressing When the mapping is performed there are some requirements that must be fulfilled between the IED model and the customer model One attribute in the customer model can only be mapped to one attribute in the IED...

Страница 57: ... LNs in the IED model the DOs in the customer model might be inconsistent with respect to quality in the case of different operational states of the IED Functions When several LNs in the customer model are mapped to one function in the IED the Mod of the function will affect all the customer LNs Several other use cases like this exist By understanding the concept of mapping from IED functions and ...

Страница 58: ...52 ...

Страница 59: ...Application service data unit AWG American Wire Gauge standard BBP Busbar protection BFOC 2 5 Bayonet fibre optic connector BFP Breaker failure protection BI Binary input BIM Binary input module BOM Binary output module BOS Binary outputs status BR External bistable relay BS British Standards BSR Binary signal transfer function receiver blocks BST Binary signal transfer function transmit blocks C3...

Страница 60: ...Common Format for Transient Data Exchange format for Disturbance recorder according to IEEE ANSI C37 111 1999 IEC 60255 24 Contra directional Way of transmitting G 703 over a balanced line Involves four twisted pairs two of which are used for transmitting data in both directions and two for transmitting clock signals COT Cause of transmission CPU Central processing unit CR Carrier receive CRC Cycl...

Страница 61: ...lectromagnetic interference EnFP End fault protection EPA Enhanced performance architecture ESD Electrostatic discharge F SMA Type of optical fibre connector FAN Fault number FCB Flow control bit Frame count bit FOX 20 Modular 20 channel telecommunication system for speech data and protection signals FOX 512 515 Access multiplexer FOX 6Plus Compact time division multiplexer for the transmission of...

Страница 62: ...on in REG670 IDBS Integrating deadband supervision IEC International Electrical Committee IEC 60044 6 IEC Standard Instrument transformers Part 6 Requirements for protective current transformers for transient performance IEC 60870 5 103 Communication standard for protection equipment A serial master slave protocol for point to point communication IEC 61850 Substation automation communication stand...

Страница 63: ...The network layer for the TCP IP protocol suite widely used on Ethernet networks IP is a connectionless best effort packet switching protocol It provides packet routing fragmentation and reassembly through the data link layer 2 Ingression protection according to IEC 60529 IP 20 Ingression protection according to IEC 60529 level 20 IP 40 Ingression protection according to IEC 60529 level 40 IP 54 I...

Страница 64: ...ance to the fault applied to the balance point that is the set reach The relay sees the fault but perhaps it should not have seen it PCI Peripheral component interconnect a local data bus PCM Pulse code modulation PCM600 Protection and control IED manager PC MIP Mezzanine card standard PMC PCI Mezzanine card POR Permissive overreach POTT Permissive overreach transfer trip Process bus Bus or LAN us...

Страница 65: ...on SLM Serial communication module SMA connector Subminiature version A A threaded connector with constant impedance SMT Signal matrix tool within PCM600 SMS Station monitoring system SNTP Simple network time protocol is used to synchronize computer clocks on local area networks This reduces the requirement to have accurate hardware clocks in every embedded system in a network Each embedded node c...

Страница 66: ...s taken from the process into levels suitable for further signal processing TYP Type identification UMT User management tool Underreach A term used to describe how the relay behaves during a fault condition For example a distance relay is underreaching when the impedance presented to it is greater than the apparent impedance to the fault applied to the balance point that is the set reach The relay...

Страница 67: ...voltage WEI Weak end infeed logic VT Voltage transformer X 21 A digital signalling interface primarily used for telecom equipment 3IO Three times zero sequence current Often referred to as the residual or the earth fault current 3UO Three times the zero sequence voltage Often referred to as the residual voltage or the neutral point voltage 1MRK 511 393 UEN A Section 9 Glossary 670 series 2 2 IEC 6...

Страница 68: ...62 ...

Страница 69: ...63 ...

Страница 70: ... AB Grid Automation Products 721 59 Västerås Sweden Phone 46 0 21 32 50 00 abb com protection control Copyright 2017 ABB All rights reserved Specifications subject to change without notice 1MRK 511 393 UEN ...

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