1、 IEEE Recommended Practice for Overvoltage and Insulation Coordination of Transmission Systems at 1000 kV AC and Above Sponsored by the Corporate Advisory Group IEEE Substations Committee IEEE Switchgear Committee IEEE Transformers Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE-SA Boa
2、rd of Governors and IEEE Power and Energy Society IEEE Std 1862-2014 IEEE Std 1862-2014 IEEE Recommended Practice for Overvoltage and Insulation Coordination of Transmission Systems at 1000 kV AC and Above Sponsor Corporate Advisory Group of the IEEE Board of Governors and IEEE Substations Committee
3、 IEEE Switchgear Committee IEEE Transformers Committee of the IEEE Power and Energy Society Approved 15 May 2014 IEEE-SA Standards Board Abstract: The procedure for selection of insulation levels of UHV ac transmission lines and substations are specified. Also specified are reliability criterion und
4、er switching overvoltage and lightning overvoltage. Calculation methods of insulation coordination design are suggested. According to the characteristics of UHV ac systems, overvoltage mitigation measures are recommended. Some examples of insulation coordination are presented. Keywords: atmospheric
5、correction factor, basic lightning impulse insulation level (BIL), basic switching impulse insulation level (BSL), clearance, crest value, ground fault factor, IEEE 1862, insulation coordination, insulation design, overvoltage, phase-to-ground insulation configuration, phase-to-phase insulation conf
6、iguration, protective margin, protective ratio, shielding failures, standard withstand voltages, ultra-high voltage (UHV), voltage stresses The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2014 by The Institute of Electrical and Electr
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35、xpressly 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. Participants At the time this IEEE recommended practice was completed,
36、 the third sub-working group of the Ultra-High Voltage Working Group had the following membership: Weijiang Chen, Chair Dong Ge, Secretary Raj Ahuja Hans Candia Xiujuan Chen Min Dai Yujian Ding Shuchun Du Denis Dufournet Ken Edwards Francois Gallon Dingxie Gu Hiroyuki Hama Bin Han Huiwen He Yoshihir
37、o Ishizaki Hiroki Ito Hermann Koch Edelhard Kynast Guofu Li Liuling Li Jiming Lin Makoto Miyashita Masatomo Ono Yukiyasu Shirasaka Kyoichi Uehara Xiaogang Wang Zutao Xiang Xinzhe Yu Cuixia Zhang Liuchun Zhang Yuanyuan Zhang Jun Zhou Peihong Zhou The following entities submitted technical contributio
38、ns or commented of the draft standard at various stages of the project development. Alstom Grid Bonneville Power Administration Electric Power Research Institute, Inc. (EPRI) Hitachi, Ltd. Japan AE Power Systems Corporation Mitsubishi Electric Corporation Quanta Technology, LLC Siemens Corporation S
39、tate Grid Corporation of China (SGCC) Toshiba Corporation Waukesha Electric Systems, Inc. The following members of the entity balloting committee voted on this recommended practice. Balloters may have voted for approval, disapproval, or abstention. ABB, Inc. Alstom BII Group Holdings Ltd. Bonneville
40、 Power Administration China Datang Corporation Electric Power Research Institute, Inc. (EPRI) Marvell Semiconductor, Inc. Mitsubishi Electric Corporation Quanta Technology, LLC Siemens Corporation Southwest Jiaotong University State Grid Corporation of China (SGCC) Toshiba Corporation Waukesha Elect
41、ric Systems, Inc. Copyright 2014 IEEE. All rights reserved. vi When the IEEE-SA Standards Board approved this recommended practice on 15 May 2014, it had the following membership: John Kulick, Chair Jon Walter Rosdahl, Vice-chair Richard H. Hulett, Past Chair Konstantinos Karachalios, Secretary Pete
42、r Balma Farooq Bari Ted Burse Clint Chaplain Stephen Dukes Jean-Philippe Faure Gary Hoffman Michael Janezic Jeffrey Katz Joseph L. Koepfinger* David Law Hung Ling Oleg Logvinov Ted Olsen Glenn Parsons Ron Peterson Adrian Stephens Peter Sutherland Yatin Trivedi Phil Winston Don Wright Yu Yuan *Member
43、 Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Richard DeBlasio, DOE Representative Michael Janezic, NIST Representative Don Messina EEE-SA Content Publishing Soo H. Kim IEEE-SA Standards Technical Community Copyright 2014 IEEE. All rights reserved. vii Introdu
44、ction This introduction is not part of IEEE Std 1862-2014, IEEE Recommended Practice for Overvoltage and Insulation Coordination of Transmission Systems at 1000 kV AC and Above. In order to resolve the prominent problem of the inverse distribution between energy resources and power demands, the ultr
45、a-high voltage (UHV) ac transmission, which is advantaged over long distance and large capacity, is required. There are specifics on overvoltage and insulation coordination of UHV ac systems, such as switching overvoltages (SOV), very fast front overvoltage (VFFO), lightning overvoltage, etc. Time-t
46、o-crest of SOV on UHV lines is much longer than that of standard switching impulse (SI). For air clearance of UHV transmission lines, the switching impulse flashover voltage is non-linearly related to the distance of the clearance. Flashover voltage presents its saturation feature as clearance incre
47、ase. In order to improve the economy of an UHV transmission line, air clearance test data of longer time-to-crest SI can be used for insulation coordination. In UHV ac systems, the ratio of the basic lightning impulse insulation level (BIL) to the system voltage is lower than that of EHV system, so
48、VFFO may become the main dielectric stress to be limited. Since UHV towers are higher than EHV ones, lightning overvoltage in UHV systems needs special attention. Copyright 2014 IEEE. All rights reserved. viii Contents 1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 2. Normative references 2 3. Definition
49、s, acronyms, and abbreviations 2 3.1 Definitions . 2 3.2 Acronyms and abbreviations . 3 4. Overvoltage and mitigation measures 3 4.1 Temporary overvoltages 4 4.2 Switching overvoltages 5 4.3 Lightning overvoltages 7 4.4 Very fast front overvoltages (VFFO) . 8 5. Insulation strength 9 6. Performance reliability criterion . 9 7. Insulation coordination design .10 7.1 Design procedures for continuous power frequency voltage and temporary overvoltages .10 7.2 Design procedures for switching overvoltages .12 7.3 Design procedures for lightning overvoltages 13 7.4 Design procedures
