ANSI IEEE 1727-2013 Guide for Working Procedures on Underground Transmission Circuits with Induced Voltage.pdf

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1、 IEEE Guide for Working Procedures on Underground Transmission Circuits with Induced Voltage Sponsored by the Insulated Conductors Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA 20 May 2013 IEEE Power and Energy Society IEEE Std 1727-2013 IEEE Std 1727-2013 IEEE Guide for Working Procedure

2、s on Underground Transmission Circuits with Induced Voltage Sponsor Insulated Conductors Committee of the IEEE Power and Energy Society Approved 6 March 2013 IEEE-SA Standards Board Recognized as an American National StandardAbstract: Induced voltage working procedures for underground transmission c

3、ircuits are established in this guide. A transmission circuit when de-energized will have an induced voltage when in a common duct bank with an energized circuit. The induced voltage may be a possible safety hazard. The induced voltage may be determined by modeling the circuits and by measurement. T

4、his guide addresses the working procedures to follow when performing work where induced voltage is present. Keywords: cable, duct bank, equipment, grounding, IEEE 1727, induced voltage, jointing, underground transmission The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New

5、York, NY 10016-5997, USA Copyright 2013 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 20 May 2013. Printed in the United States of America. IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any indiv

6、idual standard for educational classroom use can also be obtained through the Copyright Clearance Center. Copyright 2013 IEEE. All rights reserved. iv Notice to users Laws and regulations Users of IEEE Standards documents should consult all applicable laws and regulations. Compliance with the provis

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18、ressly advised that determination of the validity of any patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Further information may be obtained from the IEEE Standards Association. Copyright 2013 IEEE. All rights reserved. viParticipants At the time thi

19、s IEEE guide was completed, the C29 Working Group had the following membership: Albert Kong, Chair Pierre Argaut, Vice Chair Nijam Robert Uddin, Technical Editor Mahmood Akhtar Vctor Antoniello David Bogden John Cooper Dennis DeCosta David Dubois Marcia Eblen Frank Frentzas Henk Geene Todd Goyette J

20、im Hunt Dennis Johnson Jeff Joy Kishan Kasondra Matthias Kirchner Don Koonce Arthur Kroese Frederick Lesur Jose Lopez Frederic Lesur Allen MacPhail Ted Nishioka Mohammad Pasha Rick Piteo Forest Rong Darrell Sabatka Ray Saccany* Mark Smith Hon Suen Austin Tingley Jade Wong Tiebin Zhao Joe Zimnoch *De

21、ceased The following members of the individual balloting committee voted on this guide. Balloters may have voted for approval, disapproval, or abstention. William Ackerman Ali Al Awazi Roy Alexander Saleman Alibhay Earle Bascom III Kenneth Bow Bill Brown Nissen Burstein William Bush William Byrd Rob

22、ert Christman Frank Di Guglielmo Carlo Donati Gary Donner Rabiz Foda Frank Frentzas George Gela David Gilmer Todd Goyette Randall Groves Edward Gulski Ajit Gwal Timothy Hayden Jeffrey Helzer Werner Hoelzl James Hunt Dennis Johnson A. Jones Yuri Khersonsky Albert Kong Jim Kulchisky Chung-Yiu Lam Benj

23、amin Lanz Michael Lauxman Greg Luri Ahmad Mahinfallah Rachel Mosier Jerry Murphy Michael S. Newman Charles Ngethe Joe Nims Lorraine Padden Moises Ramos Michael Roberts Lei Rong Jesse Rorabaugh Bartien Sayogo Dennis Schlender Gil Shultz Michael Smalley James Smith Jerry Smith Gary Stoedter Peter Tiri

24、nzoni Joe Uchiyama Nijam Robert Uddin John Vergis Mark Walton Daniel Ward Kenneth White Jonathan Woodworth Jian Yu Luis Zambrano Dawn Zhao Tiebin Zhao Copyright 2013 IEEE. All rights reserved. vii When the IEEE-SA Standards Board approved this guide on 6 March 2013, it had the following membership:

25、John Kulick, Chair David J. Law, Vice-chair Richard H. Hulett, Past Chair Konstantinos Karachalios, Secretary Masayuki Ariyoshi Peter Balma Farooq Bari Ted Burse Wael William Diab Stephen Dukes Jean-Phillippe Faure Alexander Gelman Mark Halpin Gary Hoffman Paul Houz Jim Hughes Michael Janezic Joseph

26、 L. Keopfinger* Oleg Logvinov Ron Peterson Gary Robinson Jon Walter Rosdahl Adrian Stephens Peter Sutherland Yatin Trivedi Phil Winston Yu Yuan *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Richard DeBlasio, DOE Representative Michael Janezic, NIST Repr

27、esentative Michelle Turner IEEE Standards Program Manager, Document Development Malia Zaman IEEE Standards Program Manager, Technical Program Development Copyright 2013 IEEE. All rights reserved. viii Introduction This introduction is not part of IEEE Std 1727-2013, IEEE Guide for Working Procedures

28、 on Underground Transmission Circuits with Induced Voltage. As the need for greater power capacity increased the locations where overhead transmission lines could be built to deliver this power to the users were restricted or eliminated by surrounding communities. This resulted in increasing numbers

29、 of underground transmission circuits. As the need for additional capacity continued, the instances of parallel transmission circuits also increased due to the limited locations available for construction of new underground transmission lines. Typically while performing operations and maintenance ta

30、sks on an existing line, parallel lines would remain energized. Utilities became aware of the problem of induced voltages in the situation where the parallel lines were very close. Because there were no industry guidelines or standards for these situations a utility conducted surveys of their peers

31、to determine what others were doing. These surveys resulted in the recognition of the need for a standardized approach to this problem. A working group was formed to address this need. This guide addresses this lack of standards by detailing working procedures that when used, help to ensure a safer

32、working environment for workers performing tasks where induced voltages are present from parallel underground transmission lines in a common duct bank. Copyright 2013 IEEE. All rights reserved. ix Contents 1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 2. Normative references 2 3. Definitions, acronyms,

33、and abbreviations 2 3.1 Definitions . 2 3.2 Acronyms and abbreviations . 3 4. Safety/Warning . 3 4.1 Safety . 3 4.2 Safe voltage . 3 4.3 Warnings 4 4.4 Grounding 4 4.5 Grounding methods . 4 4.6 Grounding methodologies . 4 5. General principles . 7 5.1 Equipotentiality . 7 5.2 Setting up Equipotentia

34、lity 7 5.3 Personal protection measures for operators . 8 5.4 Prior to work 8 6. Single point grounding work procedures 9 6.1 Cable pulling 9 6.2 Jointing .11 6.3 Terminating 23 6.4 Outdoor termination procedure .24 7. Scenarios for multi-point grounding work procedures 32 7.1 General .32 7.2 Differ

35、ent scenarios 33 7.3 Building a new line close to an existing line 33 7.4 Adding a length of line and two joints in an existing line close to another existing line 38 Annex A (informative) Examples of induction modeling .40 Annex B (informative) Bibliography.45 Copyright 2013 IEEE. All rights reserv

36、ed. 1 IEEE Guide for Working Procedures on Underground Transmission Circuits with Induced Voltage IMPORTANT NOTICE: IEEE Standards documents are not intended to ensure safety, health, or environmental protection, or ensure against interference with or from other devices or networks. Implementers of

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38、laimers. These notices and disclaimers appear in all publications containing this document and may be found under the heading “Important Notice” or “Important Notices and Disclaimers Concerning IEEE Documents.” They can also be obtained on request from IEEE or viewed at http:/standards.ieee.org/IPR/

39、disclaimers.html. 1. Overview 1.1 Scope This guide establishes induced voltage working procedures for underground transmission circuits. A transmission circuit when de-energized will have an induced voltage when in a common duct bank with an energized circuit. The induced voltage may be a possible s

40、afety hazard. The induced voltage may be determined by modeling the circuits and by measurement. This guide addresses the working procedures to follow when performing work where induced voltage is present. 1.2 Purpose The purpose of this guide is to establish working procedures for de-energized unde

41、rground transmission circuits where induced voltage is present. The guide will describe working procedures to use under this condition. IEEE Std 1727-2013 IEEE Guide for Working Procedures on Underground Transmission Circuits with Induced Voltage Copyright 2013 IEEE. All rights reserved. 2 2. Normat

42、ive references The following 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. Fo

43、r undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies. Accredit Standards Committee C2-2007, National Electrical Safety Code (NESC).1,2CSA C22.3 #7, Canadian Standards Association Underground Systems.3OSHA 29 CFR 1910.303, Subpart SElect

44、rical. paragraph. 303(g)(2)(i)(A) Guarding of Live Parts43. Definitions, acronyms, and abbreviations 3.1 Definitions For the purposes of this document, the following terms and definitions apply. The IEEE Standards Dictionary Online should be consulted for terms not defined in this clause.5The defini

45、tions and terminology used herein apply specifically to working procedures on underground transmission circuits. cable jacket: A polymeric insulating material that is extruded over the outside of a cable for corrosion protection and mechanical protection of the cable. cable metallic shield: metallic

46、 tapes, concentric wires, or sheath on the outside of the cable insulation and semi-conducting insulation shield. The functions of the cable metallic shield are to provide a low resistance path for cable charging current and fault current. The terminology metallic sheath is used in this document. gr

47、ound: A conducting connection, whether intentional or accidental, by which an electric circuit or equipment is connected to the earth or to some conducting body of relatively large extent that serves in place of the earth. ground electrode: A conductor imbedded in the earth and used for collecting g

48、round current from or dissipating ground current into the earth. grounding connection: A connection used in establishing a ground and that consists of a grounding conductor, a grounding electrode and the earth (soil) that surrounds the electrode or some conductive body which serves instead of the ea

49、rth. grounding system: Consists of all interconnected grounding connections in a specic area. 1National Electrical Safety Code and NESC are both registered trademarks and service marks of The Institute of Electrical and Electronics Engineers, Inc. 2The NESC is available from The Institute of Electrical and Electronics Engineers at http:/standards.ieee.org/. 3CSA publications are available from the Canadian Standards Association (http:/www.csa.ca/). 4OSHA publications available from http:/www.osha.gov. 5IEEE Standards Dictionary Online subscription is ava