IEEE-776-1992-R2008.pdf

Copyright © 1998 IEEE All Rights Reserved1 IEEE Std 776-1992 (R2008) (Revision of IEEE Std 776-1987) IEEE Recommended Practice for Inductive Coordination of Electric Supply and Communication Lines Sponsor Transmission Systems Committee of the IEEE Communications Society Reaffirmed September 25, 2008 Approved December 3, 1992 IEEE Standards Board Abstract: The inductive environment that exists in the vicinity of electric power and wire-line telecommunications systems and the interfering effects that may be produced are addressed. An interface that permits either party, without need to involve the other, to verify the induction at the interface by use of a probe wire is presented. This recommended practice does not apply to railway signal circuits. Keywords: communication lines, electric supply, inductive coordination The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street, New York, NY 10017-2394, USA Copyright © 1993 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 1993. Printed in the United States of America ISBN 1-55937-281-8 No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Authorized licensed use limited to: IHS Stephanie Dejesus. Downloaded on February 17, 2009 at 15:46 from IEEE Xplore. Restrictions apply. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:20:13 MDTNo reproduction or networking permitted without license from IHS -,-,- IEEE Standards documents are developed within the Technical Committees of the IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Board. Members of the committees serve voluntarily and without compensation. They are not necessarily members of the Institute. The standards developed within IEEE represent a consensus of the broad expertise on the subject within the Institute as well as those activities outside of IEEE that have expressed an interest in partici- pating in the development of the standard. Use of an IEEE Standard is wholly voluntary. The existence of an IEEE Standard does not imply that there are no other ways to produce, test, measure, purchase, mar- ket, or provide other goods and services related to the scope of the IEEE Standard. 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Provided by IHS under license with IEEELicensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:20:13 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Introduction (This introduction is not a part of IEEE Std 776-1992, IEEE Recommended Practice for Inductive Coordination of Electric Supply and Communication Lines.) During the Þve years since IEEE Std 776-1987 was published, the guide has provided a useful tool for those faced with inductive coordination problems. Questions have arisen about the stringent harmonic distribution used on the probe-wire interface described in table 2. This version of IEEE Std 776 provides ßexibility in the use of harmonic distributions in table 2 to match the variety of existing environments and conditions. The gen- eral section was also rewritten in an effort to make it more understandable. Other sections have also been improved editorially. These efforts and contributions were made by Dick Nelson, Harold Held, Bill McCoy, Charlie Nelson, Chrys Chrysanthou, and David Boneau. Since the publication of joint reports of the National Electric Light Association and the Bell System during and following the 1920s, the joint responsibility of inductive coordination between power and telecommunication companies has generally been accepted. However, the need has long been recognized for one document that deÞnes the components of interference, provides speciÞc procedures to predict levels of interference, provides speciÞc methods to demonstrate cause and effect relationships, and deÞnes a threshold for initiating coordina- tion to mitigate interference. The Longitudinal Induction Working Group, which is under the direction of the Inductive Coordination and Electrical Protection (ICEP) Subcommittee of the Transmission Systems Commit- tee of the Communications Society, has struggled to produce a fair and equitable approach to Þll this need under the leadership of three different chairs. These chairs were, Þrst, Harold C. Held, retired from Illinois Bell Tele- phone Company; second, the late James R. Wilson, formerly afÞliated with South Central Bell Telephone Com- pany; and third, David Lee Boneau of Southwestern Bell Telephone Company. Major contributions to the document were made by James R. Wilson, George Benz of Southern New England Telephone Company, and David Boneau. Members of the Oklahoma Power and Communications Association (originally the Oklahoma Inductive Coordination Association) furthered the development of the document by Þeld testing and assuring the validity of the various calculations and measurement techniques. Many others have reviewed and helped to formulate a guide that is usable by both power and telecommunication company personnel. Participants Longitudinal Induction Working Group members at the time of balloting are as follows: David Lee Boneau, Chair G. Y. R. AllenD. HuberH. E. Nerhood J. AllisonD. P. HartmannS. D. Overby M. J. AnnaW. M. Haynes, Jr.P. Pool C. ChrysanthouH. C. HeldK. Sabine W. DabiszaR. G. JonesM. S. Tibensky J. S. GallatinJ. F. LaidigW. B. Wilkens R. F. GundrumW. J. McCoyR. G. Wunder C. D. HansellC. R. NelsonL. S. Young R. E. Nelson Authorized licensed use limited to: IEEE Standards Staff. Downloaded on October 24, 2008 at 12:18 from IEEE Xplore. Restrictions apply.Authorized licensed use limited to: IHS Stephanie Dejesus. Downloaded on February 17, 2009 at 15:46 from IEEE Xplore. Restrictions apply. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:20:13 MDTNo reproduction or networking permitted without license from IHS -,-,- iv Longitudinal Induction Working Group members at the time of the 1987 version were as follows: David Lee Boneau, Chair G. Y. R. AllenD. P. HartmannJ. F. Laidig J. E. AllisonW. M. Haynes, Jr.W. J. McCoy M. J. AnnaH. C. HeldR. E. Nelson G. W. BenzL. M. Himmel, Sr.H. E. Nerhood W. DabiszaP. JacksonS. D. Overby L. W. GrovensteinR. G. JonesR. W. Parker R. GundrumA. K. KnowlesH. R. Stevenson S. W. GuzikG. H. KuhnJ. Thorson C. D. HansellM. S. Tibensky The following persons were on the balloting committee that approved this document for submission to the IEEE Standards Board: G. Y. R. AllenD. HuberH. E. Nerhood J. AllisonD. P. HartmannS. D. Overby M. J. AnnaW. M. Haynes, Jr.P. Pool C. ChrysanthouH. C. HeldK. Sabine W. DabiszaR. G. JonesM. S. Tibensky J. S. GallatinJ. F. LaidigW. B. Wilkens R. F. GundrumW. J. McCoyR. G. Wunder C. D. HansellC. R. NelsonL. S. Young R. E. Nelson Authorized licensed use limited to: IEEE Standards Staff. Downloaded on October 24, 2008 at 12:18 from IEEE Xplore. Restrictions apply.Authorized licensed use limited to: IHS Stephanie Dejesus. Downloaded on February 17, 2009 at 15:46 from IEEE Xplore. Restrictions apply. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:20:13 MDTNo reproduction or networking permitted without license from IHS -,-,- v When the IEEE Standards Board approved this standard on December 3, 1992, it had the following member- ship: Marco W. Migliaro, Chair Donald C. Loughry, Vice Chair Andrew G. Salem, Secretary Dennis BodsonDonald N. HeirmanT. Don Michael* Paul L. BorrillBen C. JohnsonJohn L. Rankine Clyde CampWalter J. KarplusWallace S. Read Donald C. FleckensteinIvor N. KnightRonald H. Reimer Jay Forster*Joseph KoepÞnger*Gary S. Robinson David F. FranklinIrving KolodnyMartin V. Schneider Ramiro GarciaD. N. ÒJimÓ LogothetisTerrance R. Whittemore Thomas L. HannanLawrence V. McCallDonald W. Zipse *Member Emeritus Also included are the following nonvoting IEEE Standards Board liaisons: Satish K. Aggarwal James Beall Richard B. Engelman David E. Soffrin Stanley Warshaw Rochelle L. Stern IEEE Standards Project Editor Authorized licensed use limited to: IEEE Standards Staff. Downloaded on October 24, 2008 at 12:18 from IEEE Xplore. Restrictions apply.Authorized licensed use limited to: IHS Stephanie Dejesus. Downloaded on February 17, 2009 at 15:46 from IEEE Xplore. Restrictions apply. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:20:13 MDTNo reproduction or networking permitted without license from IHS -,-,- vi Contents 1.Scope 1 2.References 1 3.General. 2 3.1 Inductive interference 2 3.2 Need for coordination 3 3.3 Mutual responsibility of parties involved 3 4.The inductive environment 3 4.1 Guidelines for an acceptable environment. 3 4.2 Methods of measurement. 12 4.3 Methods of prediction 22 5.Coordination within the inductive environment29 5.1 General Coordination Methods 29 5.2 Specific coordination methods. 30 6.Administrative methods and procedures 32 6.1 Intercompany meetings and contacts. 32 6.2 Mitigation of specific interference cases 32 7.Bibliography 34 Annex A Example calculations 35 A.1Prediction calculations. 35 A.2Mitigation calculations. 49 Annex B Decibel, power, and C-message noise. 52 Authorized licensed use limited to: IEEE Standards Staff. Downloaded on October 24, 2008 at 12:18 from IEEE Xplore. Restrictions apply.Authorized licensed use limited to: IHS Stephanie Dejesus. Downloaded on February 17, 2009 at 15:46 from IEEE Xplore. Restrictions apply. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:20:13 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 IEEE Recommended Practice for Inductive Coordination of Electric Supply and Communication Lines 1. Scope This recommended practice addresses the inductive environment that exists in the vicinity of electric power and wire-line telecommunications systems and the interfering effect that may be produced thereby; guidance is offered for the control or modiÞcation of the environment and the susceptibility of the affected systems in order to maintain an acceptable level of interference. To aid the user of this recommended practice in calculating induction between power and telecommunica- tion lines, the concept of an interface is developed. This recommended practice permits either party, without need to involve the other, to verify the induction at the interface by use of a probe wire. This recommended practice does not apply to railway signal circuits. 2. References This standard shall be used in conjunction with the following publications: IEEE Std 81-1983, IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Ground System (ANSI). 1 IEEE Std 367-1987, IEEE Recommended Practice for Determining the Electric Power Station Ground Potential Rise and Induced Voltage from a Power Fault (ANSI). IEEE Std 487-1992, IEEE Recommended Practice for the Protection of Wire-Line Communication Facilities Serving Electric Power Stations (ANSI). IEEE Std 789-1988, IEEE Standard Performance Requirements for Communications and Control Cables for Application in High Voltage Environments (ANSI). IEEE Std 820-1984 (Reaff 1992), IEEE Standard Telephone Loop Performance Characteristics (ANSI). IEEE Std 1137-1991, IEEE Guide for the Implementation of Inductive Coordination Mitigation Techniques (ANSI). 1 IEEE publications are available from the Institute of Electrical and Electronics Engineers, Service Center, 445 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855-1331, USA. Authorized licensed use limited to: IEEE Standards Staff. Downloaded on October 24, 2008 at 12:18 from IEEE Xplore. Restrictions apply.Authorized licensed use limited to: IHS Stephanie Dejesus. Downloaded on February 17, 2009 at 15:46 from IEEE Xplore. Restrictions apply.