一起定子接地保护动作引起的分频铁磁谐振分析

JI Jie

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一起定子接地保护动作引起的分频铁磁谐振分析

更新时间：2025-08-13

- 一起定子接地保护动作引起的分频铁磁谐振分析
- Automation of Electric Power Systems Vol. 38, Issue 16, Pages: 132-135(2014)
- 作者机构：
  
  锦屏水力发电厂, 四川省西昌市,615000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2014
- 稿件说明：
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JI Jie. [J]. Automation of electric power systems, 2014, 38(16): 132-135.
DOI：

JI Jie. [J]. Automation of electric power systems, 2014, 38(16): 132-135. DOI：

摘要

从理论上对经接地变高阻方式接地的发电机定子单相接地故障电压特征进行分析

通过MATLAB计算和理论推导两种方式计算故障点过渡电阻。通过从铁磁谐振产生机理入手

区分了主变压器低压侧接地故障和电压互感器铁磁谐振发生的起止时间

判断了故障点位置

为故障检查提供了依据。

Abstract

The characteristics of fault voltage waveforms generated by generator stator single phase grounding fault turned to grounding in high impedance mode are analyzed and the point of failure transient resistance is calculated and derived via the MATLAB. By proceeding from the mechanism of ferro-resonance

the sequence of the main transformer’s low voltage side grounding fault and the start and stop time of the voltage transformer ferro-resonance is distinguished and the location of the fault point is judged

providing a basis for fault inspection.

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基于故障分量的相位相关电流差动保护

基于相角差的发电机定子接地保护方向元件

自适应20 Hz电源注入式定子接地保护

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