IEC TR 62066-2002 Surge overvoltages and surge protection in low-voltage a.c power systems - General basic information《在低压交流电源系统中电涌过电压和电涌保护装置》.pdf
《IEC TR 62066-2002 Surge overvoltages and surge protection in low-voltage a.c power systems - General basic information《在低压交流电源系统中电涌过电压和电涌保护装置》.pdf》由会员分享,可在线阅读,更多相关《IEC TR 62066-2002 Surge overvoltages and surge protection in low-voltage a.c power systems - General basic information《在低压交流电源系统中电涌过电压和电涌保护装置》.pdf(138页珍藏版)》请在麦多课文档分享上搜索。
1、TECHNICAL REPORT IECTR 62066 First edition 2002-06 Surge overvoltages and surge protection in low-voltage a.c. power systems General basic information Surtensions de choc et protection contre la foudre dans les rseaux basse tension Informations gnrales fondamentales Reference number IEC/TR 62066:200
2、2(E)Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For example, edition numbers 1.
3、0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2. Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC, thus ensu
4、ring that the content reflects current technology. Information relating to this publication, including its validity, is available in the IEC Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. Information on the subjects under consideration and work in progr
5、ess undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is also available from the following: IEC Web Site (www.iec.ch) Catalogue of IEC publications The on-line catalogue on the IEC web site (www.iec.ch/catlg-e.htm) enables you to s
6、earch by a variety of criteria including text searches, technical committees and date of publication. On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. IEC Just Published This summary of recently issued publications (ww
7、w.iec.ch/JP.htm) is also available by email. Please contact the Customer Service Centre (see below) for further information. Customer Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: custserviec.ch Tel:
8、 +41 22 919 02 11 Fax: +41 22 919 03 00TECHNICAL REPORT IEC TR 62066 First edition 2002-06 Surge overvoltages and surge protection in low-voltage a.c. power systems General basic information Surtensions de choc et protection contre la foudre dans les rseaux basse tension Informations gnrales fondame
9、ntales PRICE CODE IEC 2002 Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commissio
10、n, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch XB For price, see current catalogue Commission Electrotechnique Internationale International Electrotechnical Commission 2 TR 62066 IEC:2002(E) C
11、ONTENTS FOREWORD.7 1 Scope.9 2 Reference documents.9 3 Definitions 10 4 Overvoltages in low-voltage systems12 5 Lightning overvoltages13 5.1 General .13 5.2 Origin of lightning surge overvoltages18 5.3 Lightning surges transferred from MV systems 21 5.4 Surges caused by direct flash to LV lines 23 5
12、.5 Lightning surges induced into LV systems .23 5.6 Examples of induced overvoltages 25 5.7 Overvoltages caused by flashes to the structures or in close vicinity .27 5.8 Recapitulation on lightning overvoltages30 6 Switching overvoltages.31 6.1 General .31 6.2 Operation of circuit-breakers and switc
13、hes 35 6.3 Operation of fuses.37 6.4 Frequency of occurrence.38 6.5 Interactions with surge-protective devices .38 6.6 Recapitulation on switching overvoltages 39 7 Temporary overvoltages .40 7.1 General .40 7.2 Magnitude of temporary overvoltages due to MV and LV faults40 7.3 Temporary overvoltages
14、 due to defects in the LV electrical installation42 7.4 Probability of occurrence and severity of harm 42 7.5 Recapitulation on temporary overvoltage.44 8 System interaction overvoltages .44 8.1 General .44 8.2 Interaction between power system and communications system45 8.3 Other interactions46 8.4
15、 Recapitulation on system interactions46 9 Observations on surge overvoltages and failure rates.46 9.1 General .46 9.2 Using field failure data.47 9.3 Recapitulation of observations on failure rates 48 10 Considerations on system outage/equipment failure/fires .48 10.1 General .48 10.2 Avoiding inte
16、rference in system operation .49 10.3 Preventing permanent damage49 10.4 Costs of surge-related interruptions and failures50 10.5 Recapitulation on outages and failures52TR 62066 IEC:2002(E) 3 11 Considerations on the use of surge protection52 11.1 General .52 11.2 Power system configuration.52 11.3
17、 Types of installation 53 11.4 Occurrence of surges 53 11.5 SPD disconnector54 11.6 Risk assessment .55 11.7 Recapitulation on the need for surge protection.57 12 Surge protection application .57 12.1 General .57 12.2 Surge protective devices in power distribution systems .58 12.3 Basic system chara
18、cteristics for SPD selection59 12.4 Considerations for installation of SPDs64 12.5 Coordination among SPDs and with equipment to be protected.66 12.6 Recapitulation on surge protection application.67 Annex A (informative) Complementary information on lightning-related overvoltages 68 Annex B (inform
19、ative) Switching overvoltages.79 Annex C (informative) Complementary information on temporary overvoltages .94 Annex D (informative) Complementary information on system interaction overvoltages (see clause 8).97 Annex E (informative) Complementary information on SPD application .102 Annex F (informa
20、tive) Avoiding overvoltages through good practice for earthing and cabling124 Bibliography128 Figure 1 Examples of lightning flash coupling mechanisms 13 Figure 2 Examples of lightning flashes to a complex electrical system .15 Figure 3 Possible waveforms of lightning current striking ground-based o
21、bjects.16 Figure 4 Frequency distribution of peak currents for three types of lightning events.16 Figure 5 Map of annual thunderstorm days 7 .18 Figure 6 Direct flash to an overhead line19 Figure 7 Example of resistive coupling from lightning protection system 21 Figure 8 Typical earth coupling mech
22、anisms22 Figure 9 Typical overvoltages induced on an LV line by a near lightning flash24 Figure 10 Example of estimated frequency of occurrence of prospective induced lightning overvoltages on LV overhead lines .25 Figure 11 Model of distribution system used in the simulation26 Figure 12 Model for c
23、omputing dispersion of lightning current among parallel buildings in an example of TN-C system .28 Figure 13 Generation of overvoltage by switching an RLC circuit .31 Figure 14 Typical switching overvoltages .33 Figure 15 Example of a high-frequency switching surge.33 Figure 16 Distribution of the r
24、ate of rise of switching surges at different locations34 Figure 17 Distribution of the rise time of switching surges34 Figure 18 Rate of rise of the switching surges and their crest values .35 Figure 19 Distribution of the duration of the switching surges.35 4 TR 62066 IEC:2002(E) Figure 20 Example
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- IECTR620662002SURGEOVERVOLTAGESANDSURGEPROTECTIONINLOWVOLTAGEACPOWERSYSTEMSGENERALBASICINFORMATION 低压

链接地址:http://www.mydoc123.com/p-1238029.html