Research on Disturbance in the Secondary Side of PT During Disconnector Switching in 500 kV Substation

LIU Jia-fang; LI Min; RAO Zhang-quan; WANG Jian-guo; ZHOU Wen-jun; ZHANG Lei

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Research on Disturbance in the Secondary Side of PT During Disconnector Switching in 500 kV Substation

更新时间：2025-04-26

- Research on Disturbance in the Secondary Side of PT During Disconnector Switching in 500 kV Substation
- High VoltageApparatus Issue 6, Pages: 423-424(2005)
- 作者机构：
  
  1.   邵阳学院电气信息工程学院
  2.   武汉大学
  3.   武汉大学湖南邵阳 422004 武汉大学
  4.   湖北武汉 430072
  5.   湖北武汉 430072 广东省电力试验研究所
  6.   广东广州 510600
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM451
- Published：2005
- 稿件说明：
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[1]刘家芳,李敏,饶章权,王建国,周文俊,张磊.500kV变电站隔离开关操作PT二次侧干扰信号的研究[J].高压电器,2005(06):423-424.

LIU Jia-fang, LI Min, RAO Zhang-quan, et al. Research on Disturbance in the Secondary Side of PT During Disconnector Switching in 500 kV Substation[J]. High voltageapparatus, 2005, (6): 423-424.
[1]刘家芳,李敏,饶章权,王建国,周文俊,张磊.500kV变电站隔离开关操作PT二次侧干扰信号的研究[J].高压电器,2005(06):423-424. DOI：

LIU Jia-fang, LI Min, RAO Zhang-quan, et al. Research on Disturbance in the Secondary Side of PT During Disconnector Switching in 500 kV Substation[J]. High voltageapparatus, 2005, (6): 423-424. DOI：

摘要

为得到PT二次侧干扰信号峰值、单次干扰个数和单次干扰之间的间隔时间等时域特征及干扰信号的频谱（频域特征）

现场实测了变电站500kV隔离开关动作时

电压互感器二次侧的干扰信号。结果表明

隔离开关动作时PT二次侧单次干扰波形是衰减振荡的

干扰主频段0．1-2MHz;在一次隔离开关开或合过程中

有多个脉冲出现

干扰电压峰值近400V。

Abstract

In order to study the transient disturbance signal of the secondary side of PT

which is generated by disconnector switching in 500 kV substation

a test is made in the field and the time and frequency domain character in details

such as the pulse peak

the number and the interval time of the pulses and the spectrum of signals are obtained. The results show that the single disturbance signal is attenuating and oscillating

and the dominant frequency band is between 0.12 MHz. There are a lot of pulses with the peak reaching near 400 V in one switching of opening or closing.

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