智能变电站电子式互感器故障分析及建议

doi:10.11930/j.issn.1004-9649.2016.02.180.05

摘要/Abstract

摘要： 电子式互感器是智能电网、数字化变电站的重要设备，其制造、运行及故障检修经验仍然不足。某变电站数字化改造3年后，部分电子式电压互感器二次电压值不稳定，电子式电流互感器二次电流值出现明显偏差。介绍了电子式互感器系统原理、设备结构，分析了设备异常、故障原因，进行了解体研究及实验验证。发现设备参数影响红外测温结果，电压互感器取能线圈短路可造成电压下降，电流互感器并联电阻开路可造成电流激增。最后对电子式互感器的设计制造、质量控制及运行维护提出了几点建议。

关键词: 智能变电站, 电子式, 电压互感器, 电流互感器, 故障

Abstract: Electronic transformer is very important in smart grid and digital substation. However, experience of manufacturing, operation and corrective maintenance of electronic transformer is still insufficient. After 3 years operation in one intelligent substation, secondary voltages of partial electronic voltage transformers are unstable and secondary currents of partial electronic current transformers has obvious deviation. The structures and principles for electronic transformers system are introduced; the malfunction reasons of equipment are analyzed and studied. It is found that equipment parameters may influence infrared temperature measurement results, shorted energy coil of voltage transformer leads to voltage drop and opening circuit of parallel resistance of current transformer results in current increase. Several suggestions are proposed for design, manufacture, quality control and maintenance of electronic transformers.

Key words: intelligent substation, electronic, voltage transformer, current transformer, malfunction

中图分类号:

TM451

邓威，毛娟. 智能变电站电子式互感器故障分析及建议[J]. 中国电力, 2016, 49(2): 180-184.

DENG Wei, MAO Juan. Analysis and Proposition for Malfunction of Electronic Transformer in Intelligent Substation[J]. Electric Power, 2016, 49(2): 180-184.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2016.02.180.05

https://www.electricpower.com.cn/CN/Y2016/V49/I2/180

参考文献

[1] 李琳，段晓波，刘观起，等． 110 kV 电容式电压互感器谐波测量特性试验及仿真[J]. 中国电力，２０１４，４７（８）：５７－６１．
LI Lin, DUAN Xiaobo, LIU Guanqi, et al． Harmonic measurement characteristics of capacitor voltage transformer(CVT) of 110 kV[J]. Electric Power, 2014, 47(8): 57-61.
[2] 苏陈云，黄震. 特高压电容式电压互感器介损和电容测量方法分析[J]. 中国电力，２０１２，４５（４）：３８－４１．
SU Chenyun, HUANG Zhen. Testing analysis of dielectric loss and capacitance of ultra-high voltage capacitive voltage transformer [J]. Electric Power, 2012, 45(4): 38-41.
[3] 李振华，李红斌，张秋雁，等. 一种高压电子式电流互感器在线校验系统[J]. 电工技术学报，２０１４，２９（７）：２２９－２３６．
LI Zhenhua, LI Hongbin, ZHANG Qiuyan, et al. An online calibration system for high voltage electronic current transformers[J]. Transactions of China Electrotechnical Society, 2014, 29(7): 229-236.
[4] 周康，陈静，徐峰. 电子式电压互感器输出异常分析[J]. 电工技术，２０１４（６）：１１－１２，２７．
ZHOU Kang, CHEN Jing, XU Feng. Analysis of abnormal output of electronic voltage transformer[J]. Electric Engineering, 2014,(6): 11-12, 27.
[5] 刘明，李金忠，刘锐，等. 电子式互感器技术和应用评述[J]. 变压器，２０１３，５０（２）：２４－２８．
LIU Ming, LI Jinzhong, LIU Rui, et al. Review on technology and application of electronic instrument transformer[J]. Transformer, 2013, 50(2): 24-28.
[6] 李小炳，毛勇，胡艳. 电子式互感器及其在智能变电站中的应用[J]. 供用电，２０１３，３０（３）：７５－８１．
LI Xiaobing, MAO Yong, HU Yan. Application of electronic transformers in smart substations[J]. Distribution & Utilization, 2013, 30(3): 75-81.
[7] 欧朝龙，徐先勇，万全，等. 智能变电站中电子式互感器运行可靠性分析及故障预防[J]. 湖南电力，２０１４，３４（１）：２７－２９，３２．
OU Chaolong, XU Xianyong, WAN Quan, et al. Reliability analysis and fault prevention on electronic transformer in smart substation [J]. Hunan Electric Power, 2014, 34(1): 27-29, 32.
[8] 黄友朋，赵山，潘峰，等. 电子式互感器数字相位补偿技术研究[J]. 中国电力，２０１４，４７（４）：１１３－１１７．
HUANG Youpeng, ZHAO Shan, PAN Feng, et al. Research of phase compensation technology in electronic instrument Transformer [J]. Electric Power, 2014, 47(4): 113-117.
[9] 张贵新，万雄，王鹏. 使用带气隙铁心的电子式电流互感器[J]. 高电压技术，２００９，３５（９）：２１４４－２１４９．
ZHANG Guixin, WAN Xiong, WANG Peng. Electronic current transformer with non-magnetic air gap in core[J]. High Voltage Engineering, 2009, 35(9): 2144-2149.
[10] 李一泉，杨荷娟，王慧芳，等. 电子式互感器状态评价及可靠性计算研究[J]. 广东电力，２０１２，２５（１１）：１０－１５，２９．
LI Yiquan, YANG Hejuan, WANG Huifang, et al. State evaluation and reliability calculation research for electronic Transformer [J]. Guangdong Electric Power, 2012, 25(11): 10-15, 29.
[11] 宁伟红，于文斌，张国庆，等. 以LabVIEW 为开发平台的电子式互感器校验仪设计[J]. 电网技术，２００９，３３（５）：８５－８９．
NING Weihong, YU Wenbin, ZHANG Guoqing, et al. Design of a calibrator for electronic current transformer based on LabVIEW[J]. Power System Technology, 2009, 33(5): 85-89.
[12] 司小平，乐丽琴，赵国生. 罗氏线圈电子式电流互感器的设计[J]. 电子设计工程，２０１３，２１（２１）：１４４－１４７．
SI Xiaoping, YUE Liqin, ZHAO Guosheng. The design of Rogowski coil electronic current transducer[J]. Electronic Design Engineering, 2013, 21(21): 144-147.
[13] 尚秋峰，刘艳峰. 方形骨架Rogowski 线圈的性能分析[J]. 高电压技术，２００８，３４（３）：476-479.
SHANG Qiufeng, LIU Yanfeng. Performance analysis of quadrate framework Rogowski coil[J]. High Voltage Engineering, 2008, 34(3): 476-479.
[14] 陈玥名，崔广泉，张天祥，等. 合并单元在电子式互感器误差调节中的作用[J]. 电测与仪表，２０１４，５１（１０）：１３－１７．
CHEN Yueming, CUI Guangquan, ZHANG Tianxiang, et al. The role of merging unit in electronic instrument transformer error adjustment[J]. Electrical Measurement ＆ Instrumentation, 2014, 51(10): 13-17.
[15] 廖传柱，张惠霞，范新权，等. 电子式互感器可靠性分析与电磁兼容性能研究[J]. 电气应用，２０１４，３３（９）：１０４－１０８．
LIAO Chuanzhu, ZHANG Huixia, FAN Xinquan, et al. Research on electromagnetic compatibility performance and analysis on reliability of electronic transformer[J]. Electrotechnical Application, 2014, 33(9): 104-108.
[16] 张贵新，赵清姣，罗承沐. 电子式互感器的现状与发展前景[J]. 电力设备，２００６，７（４）：１０８－１０９．
ZHANG Guixin, ZHAO Qingjiao, LUO Chengmu. The present situation and development foreground of electronic transformer [J]. Electrical Equipment, 2006, 7(4): 108-109.