Analysis of Conducted Interference and Research of its Suppression Measures for VFTO on Electronic Voltage Transformer

doi:10.3969/j.issn.1008-0198.2024.02.007

Abstract

Abstract: In this paper,the equivalent circuit of the capacitive divider transformer sensing unit is established by taking the air insulated substations(AIS) disconnector operation as the interference source object,the influence of the parameters of the capacitive divider transformer sensing unit on the frequency characteristics of the voltage division ratio is analyzed,and the output voltage of the transformer sensing unit under very fast transient overvoltage (VFTO) conduction interference is studied by combining the disconnector disintegration capacitive small current simulation circuit.Trough the simulation the suppression effect of the arrester,the wave blocker,the dual RC filter and transient voltage suppressor(TVS)tube combination protection circuit is analyzed.The results show that the suppression effect of the arrester on the VFTO generated by AIS disconnector operation is not ideal,and even the peak value will increase.The wave blocker can effectively suppress the high-frequency component in the VFTO.The dual RC filter and TVS tube combination protection circuit not only limits the output voltage of the sensing unit to the allowable range,but also filters out the high-frequency components in it.

Key words: VFTO, electronic voltage transformers, conducted interference, suppression measures

CLC Number:

TM712.2

LI Chuang, LIAO Xingrui, YU Quanquan, XIAO Yunteng. Analysis of Conducted Interference and Research of its Suppression Measures for VFTO on Electronic Voltage Transformer[J]. Hunan Electric Power, 2024, 44(2): 50-59.

References

[1] 杨奇,魏栋.电流互感器二次回路常见问题分析[J].湖南电力,2023,43(2):117-120.
[2] 曹文彬,陈瑞珍,罗威.电容型电流互感器末屏介损测量分析[J].湖南电力,2023,43(1):99-102.
[3] 李振华,兰芳,钟悦,等.基于双骨架共绕技术的测量保护一体化电流传感器[J].高电压技术,2022,48(11):4427-4436.
[4] MARTINEZ J A,CHOWDHURIP,IRAVANI R,et al.Modeling guidelines for very fast transients in gas insulated substations[J].IEEE PES Special Publication of the IEEE Working Group on Modeling and Analysis of System Transients,1998(6):1-24.
[5] YAMAGATA Y,TANAKA K,NISHIWAKI S,et al.Suppression of VFT in 1 100 kV GIS by adopting resistor-fitted disconnector[J].IEEE Transactions on Power Delivery,1996,11(2):872-880.
[6] 张志远.GIS开关操作对电子式互感器的影响研究[D].哈尔滨:哈尔滨工业大学,2013.
[7] BOGGS S A,FUJIMOTO N.Techniques and instrumentation for measurement of transientsin gas-insulated switchgear[J].IEEE Transactions on Electrical Insulation,1984,EI-19(2):87-92.
[8] FESER W,PFAFF W.A potential free spherical sensor for the measurement of transient electric fields[J].IEEE Transactions on Power Apparatus and Systems,1984,PAS-103(10):2904-2911.
[9] 陈维江,李志兵,孙岗,等.特高压气体绝缘开关设备中特快速瞬态过电压特性的试验研究[J].中国电机工程学报,2011,31(31):38-47.
[10] 岳功昌,刘卫东,陈维江,等.气体绝缘开关设备中特快速瞬态过电压的全过程测量方法[J].中国电机工程学报,2011,31(31):18-27.
[11] 张文斌,胡洋.GIS中快速暂态过电压VFTO的抑制研究进展[J].高电压技术,2023,49(1):418-431.
[12] 李宜.GIS隔离开关操作时电子式互感器的抗干扰方法研究[D].成都:西华大学,2020.
[13] 孟涛.分段电弧模型下快速暂态过电压特性仿真及其影响因素的研究[D].沈阳:沈阳工业大学,2010.
[14] 李亮.考虑母线残余电荷的快速暂态过电压计算分析[D].西安:西安科技大学,2016.
[15] Anon.Modeling of metal oxide surge arresters[J].IEEE Transactions on Power Delivery,1992,7(1):302-309.
[16] 李志兵,颜湘莲,王浩,等.金属氧化物避雷器在陡波下的试验与模型分析[J].高电压技术,2012,38(10):2698-2706.
[17] 马雪杰.电子互感器强电磁环境下的电磁干扰建模与抑制方法研究[D].成都:电子科技大学,2022.
[18] 中国电力企业联合会.交流电力系统阻波器: GB/T 7330—2008[S].北京:中国标准出版社,2008:7-9.
[19] 董彦军.高频通道阻波器的特性分析与检测方法研究[D].保定:华北电力大学(河北),2006.
[20] 李鹏飞.基于TVS特性的建模研究[D].南京:南京师范大学,2020.