Analysis of Conducted Disturbance via Current Transformer Due to Switch Operation of GIS Disconnector in UHV Substation

Jun Zhao; Weijiang Chen; Kejie Li; Zihan Teng; Ni Li; Tao Wen; Xing Fan

doi:10.17775/CSEEJPES.2021.05580

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Analysis of Conducted Disturbance via Current Transformer Due to Switch Operation of GIS Disconnector in UHV Substation

Regular Papers | 更新时间：2026-10-15

- Analysis of Conducted Disturbance via Current Transformer Due to Switch Operation of GIS Disconnector in UHV Substation
- Analysis of Conducted Disturbance via Current Transformer Due to Switch Operation of GIS Disconnector in UHV Substation
- 中国电机工程学会电力与能源系统学报(英文) 2023年9卷第3期页码：1227-1234
- 作者机构：
  
  1. State Key Laboratory of Power Grid Environmental Protection, China Electric Power Research Institute, Wuhan & Beijing,China
  2. State Grid Corporation of China,Beijing,China
  3. School of Electrical Engineering and Automation, Hefei University of Technology,Hefei,China
  4. School of Electrical Engineering, Xi'an Jiaotong University,Xi'an,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2021.05580
  中图分类号：
- 纸质出版：2023-05-01
- 稿件说明：
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Jun Zhao, Weijiang Chen, Kejie Li, 等. Analysis of Conducted Disturbance via Current Transformer Due to Switch Operation of GIS Disconnector in UHV Substation[J]. 中国电机工程学会电力与能源系统学报(英文), 2023,9(3):1227-1234.

Jun Zhao, Weijiang Chen, Kejie Li, et al. Analysis of Conducted Disturbance via Current Transformer Due to Switch Operation of GIS Disconnector in UHV Substation[J]. CSEE Journal of Power and Energy Systems, 2023, 9(3): 1227-1234.
Jun Zhao, Weijiang Chen, Kejie Li, 等. Analysis of Conducted Disturbance via Current Transformer Due to Switch Operation of GIS Disconnector in UHV Substation[J]. 中国电机工程学会电力与能源系统学报(英文), 2023,9(3):1227-1234. DOI： 10.17775/CSEEJPES.2021.05580.

Jun Zhao, Weijiang Chen, Kejie Li, et al. Analysis of Conducted Disturbance via Current Transformer Due to Switch Operation of GIS Disconnector in UHV Substation[J]. CSEE Journal of Power and Energy Systems, 2023, 9(3): 1227-1234. DOI： 10.17775/CSEEJPES.2021.05580.

摘要

Abstract

The characteristics of conducted disturbances via current transformer (CT) caused by switch operations in 1000 kV UHV substations are studied in this paper. Since the broad-band circuit models might have limitations on the stability and accuracy for CT conducted disturbance simulation

a frequency-domain simulation method without circuit synthesis is proposed based on VFTC spectrum and CT transfer characteristics. To improve VFTC simulation accuracy

both the bushing radiation loss and frequency-dependent earth impedance are taken into consideration. Transfer characteristics of three types of windings for the 1000 kV GIS CT are ingeniously measured from a combination of fast and slow impulse tests. Through conducted disturbances simulations in UHV Wuhu substation

bushing radiation loss is found to have a suppression effect on the high-frequency response but the effect of frequency-dependent earth impedance can be ignored. As a result

the maximum amplitude of 84.5 A for the conducted disturbance is obtained

thus a fast damped oscillatory wave immunity test with no lower than Level 4 from IEC standard is suggested to test the anti-interference performance of the secondary equipment in UHV substation.

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