Impact of Neutral Grounding Mode on Ferroesonance in 35 kV Power System

WANG Wei1; ZHOU Jian-ling2; JI Sheng-chang1; CAO Tao1; ZHANG Jin1; OU Xiao-bo1; LI Yan-ming1

doi:10.13296/j.1001-1609.hva.2010.01.003

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Impact of Neutral Grounding Mode on Ferroesonance in 35 kV Power System

更新时间：2025-04-26

- Impact of Neutral Grounding Mode on Ferroesonance in 35 kV Power System
- High VoltageApparatus Vol. 46, Issue 1, Pages: 93-96(2010)
- 作者机构：
  
  1. 西安交通大学电气工程学院
  2. 华北科技学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2010.01.003
  CLC： TM864
- Published：2010
- 稿件说明：
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[1]汪伟,周剑玲,汲胜昌,曹涛,张晋,欧小波,李彦明.35 kV系统中性点不同接地方式对铁磁谐振的影响研究[J].高压电器,2010,46(01):93-96.

WANG Wei1, ZHOU Jian-ling2, JI Sheng-chang1, et al. Impact of Neutral Grounding Mode on Ferroesonance in 35 kV Power System[J]. High voltageapparatus, 2010, 46(1): 93-96.
[1]汪伟,周剑玲,汲胜昌,曹涛,张晋,欧小波,李彦明.35 kV系统中性点不同接地方式对铁磁谐振的影响研究[J].高压电器,2010,46(01):93-96. DOI： 10.13296/j.1001-1609.hva.2010.01.003.

WANG Wei1, ZHOU Jian-ling2, JI Sheng-chang1, et al. Impact of Neutral Grounding Mode on Ferroesonance in 35 kV Power System[J]. High voltageapparatus, 2010, 46(1): 93-96. DOI： 10.13296/j.1001-1609.hva.2010.01.003.

摘要

35 kV系统中铁磁谐振过电压频繁发生

对系统造成很大的危害。利用理论分析和EMTP-RV仿真相结合的方法

分析了中国35 kV系统3种中性点接地方式（中性点不接地、经消弧线圈或小电阻接地）下由电磁式电压互感器（PT）饱和引起的铁磁谐振过电压

研究结果表明

在中性点经消弧线圈或小电阻接地系统中

只要消弧线圈或小电阻的参数选取合适

能够将中性点位移电压限制在电压三角形内

可有效抑制铁磁谐振的发生。

Abstract

Frequent ferroresonance overvoltage in 35 kV power system does serious harm to itself.This paper studies the impact of three main neutral grounding modes（i.e.isolated neutral

grounding via arc suppressing coil

and grounding via low resistance） of a 35 kV power system on the ferroresonance overvoltage induced by PT saturation through theoretical analysis and EMTP-RV simulation.The results show that as long as suitable parameters are chosen for arc suppressing coil or low resistance

neutral displacement voltage of the 35 kV power system grounding via arc suppressing coil or low resistance can be limited in the voltage triangle to effectively suppress ferroresonance.

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