1、IEEE Std C62.92.5-2009(Revision ofIEEE Std C62.92.5-1992)IEEE Guide for the Application of NeutralGrounding in Electrical Utility Systems,Part VTransmission Systems andSubtransmission SystemsIEEE3 Park Avenue New York, NY 10016-5997, USA9 June 2009IEEE Power +1 978 750 8400. Permission to photocopy
2、portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. iv Copyright 2009 IEEE. All rights reserved. Introduction This introduction is not part of IEEE Std C62.92.5-2009, IEEE Guide for the Application of Neutral Grounding in Ele
3、ctrical Utility Systems, Part VTransmission Systems and Subtransmission Systems. This guide is a part of a series of standards on neutral grounding in electrical utility systems. When the series was first approved and published, it replaced IEEE Std 143-1954, IEEE Guide for Ground-Fault Neutralizers
4、, Grounding of Synchronous Generator Systems, and Neutral Grounding of Transmission Systems. In this series of documents, individual considerations and practices have been given to the grounding of synchronous generator systems, generator-station auxiliary systems, and distribution systems. IEEE Std
5、 143-1954 is a revision of AIEE No. 954, October 1954, which was a compilation of the following three AIEE Transaction papers: AIEE Committee Guide Report, “Application of Ground-Fault Neutralizers,” AIEE Transactions (Power Apparatus and Systems), vol. 72, pt. III, pp. 183190, April 1953. AIEE Comm
6、ittee Report, “Application Guide for the Grounding of Synchronous Generator Systems,” AIEE Transactions (Power Apparatus and Systems), vol. 72, pt. III, pp. 517530, June 1953. AIEE Committee Report, “Application Guide on Methods of Neutral Grounding of Transmission Systems,” AIEE Transactions (Power
7、 Apparatus and Systems), vol. 72, pt. III, pp. 663668, August, 1953. The contents of Parts IV of the revision of IEEE Std 143-1954 are based on the foregoing documents but are amplified and updated with new material from the IEEE tutorial course “Surge Protection in Power Systems” (79EH0144-6-PWR) a
8、nd other sources. In Part I through Part V of this series, emphasis is on power system grounding practices as contrasted with the grounding, for example, of industrial systems, which is covered in other guides and standards. These guides and standards should be referenced, when appropriate, to gain
9、a full picture of other grounding practices. It is impossible to give recognition to all those who have contributed to the technology and practices of grounding of power systems, since work involving the preparation of this guide has been in progress for more than 30 years. However, the assistance o
10、f members, past and present, of the Neutral Grounding Devices Subcommittee of the Surge-Protective Devices Committee, and other similar groups with comparable purposes, should be acknowledged. Notice to users Disclaimer This guide is specifically written for electrical utility systems and does not r
11、ecognize the neutral grounding requirements for dispersed storage and generation. These requirements must recognize the restrictions imposed by the specific network to which the dispersed storage or generation is connected. Neutral grounding of dispersed storage and generation needs to be coordinate
12、d with the electrical utility system. This guide is a revision of IEEE Std C62.92.5-1992. The changes include addressing all comments received in the most recent reaffirmation of this guide. v Copyright 2009 IEEE. All rights reserved. Laws and regulations Users of these documents should consult all
13、applicable laws and regulations. Compliance with the provisions of this standard does not imply compliance to any applicable regulatory requirements. Implementers of the standard are responsible for observing or referring to the applicable regulatory requirements. IEEE does not, by the publication o
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15、ce, in laws and regulations, and use in private self-regulation, standardization, and the promotion of engineering practices and methods. By making this document available for use and adoption by public authorities and private users, the IEEE does not waive any rights in copyright to this document.
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19、his and all other standards can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. Interpretations Current interpretations can be accessed at the following URL: http:/standards.ieee.org/re
20、ading/ieee/interp/ index.html. Patents Attention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in conne
21、ction therewith. The IEEE is not responsible for identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal validity or scope of Patents Claims or determining whether any licensing terms or conditions provided in connection with submission of a L
22、etter of Assurance, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Further informatio
23、n may be obtained from the IEEE Standards Association. vi Copyright 2009 IEEE. All rights reserved. Participants At the time this guide was submitted to the IEEE-SA Standards Board for approval, the Neutral Grounding Working Group had the following membership: Steven G. Whisenant, Chair Michael Cham
24、pagne Tom Field Randy Goodrich Steven Hensley David W. Jackson Joseph L. Koepfinger Rusty Robbins Thomas Rozek Keith Stump Eva Tarasiewicz Ed Taylor Rao Thallman Larry Vogt Reigh Walling Frank Waterer Jim Wilson Jon WoodworthThe following members of the balloting committee voted on this guide. Ballo
25、ters may have voted for approval, disapproval, or abstention. William J. Ackerman Stan Arnot Ali Al Awazi David Baron G. Bartok David Beach Steven Bezner Wallace Binder William Bloethe Anne Bosma James Case Michael Champagne Keith Chow Robert Christman Michael Clodfelder Michael Comber Stephen Conra
26、d Tommy Cooper Jerry Corkran Luis Coronado Randall Crellin Alireza Daneshpooy Matthew Davis F. A. Denbrock Randall Dotson W. Elmore Ahmed Elneweihi Gary Engmann C. Erven Joseph Foldi Paul Forquer Rostyslaw Fostiak Carl Fredericks Rafael Garcia Waymon Goch Jalal Gohari Edwin Goodwin James Graham Step
27、hen Grier Randall Groves Nancy Gunderson Ajit Gwal William Henning Steven Hensley Lee Herron Raymond Hill David Horvath James Huddleston, III R. Jackson Charles B. Jensen Andrew Jones Chad Kiger Robert O. Kluge Joseph L. Koepfinger David Kornegay David W. Krause Jim Kulchisky Chung-Yiu Lam Raluca La
28、scu John Leach Gerald Lee Paul Lindemulder Federico Lopez Keith Malmedal J. Dennis Marlow Omar Mazzoni William McBride Michael McDonald Gary Michel Wade Midkiff Georges Montillet Jose Morales Kimberly Mosley Jerry Murphy Paul Myers Jeffrey Nelson Michael S. Newman Joe Nims Bansi Patel Christopher Pe
29、trola Percy Pool Alvaro Portillo Jean-Christophe Riboud Michael Roberts Stephen Rodick Charles Rogers Thomas Rozek Bartien Sayogo Dennis Schlender Samuel Sciacca Kenneth Sedziol Tony Seegers Devki Sharma Michael Sharp Hyeong Sim James E. Smith Jerry Smith John Spare Allan St Peter Walter Struppler K
30、eith Stump Charles Sufana John Sullivan Michael Swearingen Ed Taylor David Tepen Elisabeth Tobin Gerald Vaughn Raul Velazquez John Vergis Barry Ward Daniel Ward Frank Waterer Kenneth White Jim Wilson Richard Young Luis Zambrano Ahmed Zobaa vii Copyright 2009 IEEE. All rights reserved.2008 When the I
31、EEE-SA Standards Board approved this standard on 19 March 2009, it had the following membership: Robert M. Grow, Chair Thomas Prevost, Vice Chair Steve M. Mills, Past Chair Judith Gorman, Secretary John Barr Karen Bartleson Victor Berman Ted Burse Richard DeBlasio Andy Drozd Mark Epstein Alexander G
32、elman Jim Hughes Richard H. Hulett Young Kyun Kim Joseph L. Koepfinger* John Kulick David J. Law Ted Olsen Glenn Parsons Ronald C. Petersen Narayanan Ramachandran Jon Walter Rosdahl Sam Sciacca *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Howard L. Wol
33、fman, TAB Representative Michael Janezic, NIST Representative Satish Aggarwal, NRC Representative Lorraine Patsco IEEE Standards Program Manager, Document Development Matthew Ceglia IEEE Standards Program Manager, Technical Program Development viii Copyright 2009 IEEE. All rights reserved. Contents
34、1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 2. Normative references 2 3. General considerations . 2 4. Transmission system grounding . 3 4.1 General 3 4.2 Control of overvoltages produced by ground faults and degree of surge-voltage protection with surge arresters 4 4.3 Control of ground fault current
35、s 9 4.4 Sensitivity, operating time, and selectivity of the ground fault relaying . 10 5. Subtransmission system grounding 10 5.1 General 10 5.2 Control of overvoltages produced by ground faults and degree of surge voltage protection with surge arresters 11 5.3 Control of ground fault currents 14 5.
36、4 Sensitivity, operating time, and selectivity of the ground fault relaying . 16 6. Transformer tertiary systems 17 7. Equipment neutral grounding . 18 7.1 Shunt capacitor banks 18 7.2 High-voltage shunt reactors. 20 7.3 Tapped substation transformers. 21 8. Series-compensated transmission lines. 22
37、 Annex A (informative) Specifying a grounding device for a transmission or a subtransmission system (examples) 23 A.1 General 23 A.2 Specifying a grounding transformer bank. 25 A.3 Specifying a neutral grounding resistor 26 A.4 Specifying a neutral grounding reactor. 28 A.5 Specifying a ground fault
38、 neutralizer 29 Annex B (informative) Zero sequence impedance equivalent circuit for an autotransformer with an impedance-grounded neutral and a delta-connected tertiary 31 ix Copyright 2009 IEEE. All rights reserved. Annex C (informative) Bibliography 35 C.1 General 35 C.2 Effect of system groundin
39、g on transient overvoltages 36 C.3 Neutral inversion and instability . 36 C.4 Effects of equipment-neutral grounding . 37 C.5 Series compensation of transmission lines 38 1 Copyright 2009 IEEE. All rights reserved. IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Pa
40、rt VTransmission Systems and Subtransmission Systems IMPORTANT NOTICE: This standard is not intended to ensure safety, security, health, or environmental protection in all circumstances. Implementers of the standard are responsible for determining appropriate safety, security, environmental, and hea
41、lth practices or regulatory requirements. This IEEE document is made available for use subject to important notices and legal disclaimers. These notices and disclaimers appear in all publications containing this document and may be found under the heading “Important Notice” or “Important Notices and
42、 Disclaimers Concerning IEEE Documents.” They can also be obtained on request from IEEE or viewed at http:/standards.ieee.org/IPR/disclaimers.html. 1. Overview 1.1 Scope The scope of this document is to give the basic factors and general considerations in selecting the class and means of neutral gro
43、unding for a particular ac transmission or subtransmission system, and the suggested method and apparatus to be used to achieve the desired grounding. Definitions of grounding terms used in this part of the guide can be found in IEEE Std C62.92.1-2000.11.2 Purpose The purpose of this document is to
44、provide the user with insight on the basic factors and general considerations in selecting the class and means of neutral grounding for a particular ac transmission or subtransmission system. An apparatus to achieve the desired grounding is suggested, and methods for specifying the grounding devices
45、 are given. 1Information on references can be found in Clause 2. IEEE Std C62.92.5-2009 IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part VTransmission Systems and Subtransmission Systems 2 Copyright 2009 IEEE. All rights reserved. 2. Normative references The fo
46、llowing referenced documents are indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references,
47、 the latest edition of the referenced document (including any amendments or corrigenda) applies. IEEE Std 32-1972 (Reaff 1997), IEEE Standard Requirements, Terminology, and Test Procedures for Neutral Grounding Devices.2,3IEEE Std 1313.1-1996 (Reaff 2002), IEEE Standard for Insulation CoordinationDe
48、finitions, Principles, and Rules. IEEE Std C62.11-2005, IEEE Standard for Metal-Oxide Surge Arresters for AC Power Circuits. IEEE Std C62.22-2009, IEEE Guide for the Application of Metal-Oxide Surge Arresters for Alternating-Current Systems. IEEE Std C62.92.1-2000 (Reaff 2005), IEEE Guide for the Ap
49、plication of Neutral Grounding in Electrical Utility Systems, Part IIntroduction. 3. General considerations AC transmission and subtransmission systems are generally qualified as those with the following common attributes as compared to generating systems, distribution systems, or auxiliary systems: a) With some exceptions, transmission and subtransmission systems take energy from or supply energy to other types of systems (i.e., from generating systems and to distribution systems) rather than supplying this energy at the ultimate utilization point.
