A Brief Review on the Causes of Ferromagnetic Resonance and Wavelet Analysis of 10 kV Neutral Isolated Distribution Network

HUANG Li-yun; ZHANG Yan

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A Brief Review on the Causes of Ferromagnetic Resonance and Wavelet Analysis of 10 kV Neutral Isolated Distribution Network

更新时间：2025-04-26

- A Brief Review on the Causes of Ferromagnetic Resonance and Wavelet Analysis of 10 kV Neutral Isolated Distribution Network
- High VoltageApparatus Issue 4, Pages: 253-255(2006)
- 作者机构：
  
  1. 上海交通大学
  2. 上海交通大学上海200240
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM864
- Published：2006
- 稿件说明：
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[1]黄丽云,张焰.电网铁磁谐振的产生机理与10kV配网铁磁谐振的小波分析[J].高压电器,2006(04):253-255.

HUANG Li-yun, ZHANG Yan. A Brief Review on the Causes of Ferromagnetic Resonance and Wavelet Analysis of 10 kV Neutral Isolated Distribution Network[J]. High voltageapparatus, 2006, (4): 253-255.
[1]黄丽云,张焰.电网铁磁谐振的产生机理与10kV配网铁磁谐振的小波分析[J].高压电器,2006(04):253-255. DOI：

HUANG Li-yun, ZHANG Yan. A Brief Review on the Causes of Ferromagnetic Resonance and Wavelet Analysis of 10 kV Neutral Isolated Distribution Network[J]. High voltageapparatus, 2006, (4): 253-255. DOI：

摘要

铁磁谐振是电力系统运行过程中的一种常见现象

频繁发生在中性点非直接接地的配电网和中性点直接接地的高压电力网中。为研究其过电压和过电流带给电力设备的损害

分析了单相铁磁谐振的振荡过程

并探讨了电力系统铁磁谐振产生的机理;同时利用MATLAB中的小波工具箱对某10kV中性点不接地系统单相接地故障激发的铁磁谐振进行了分析

检测故障发生时刻以及判断谐振的发生和频率。仿真结果表明

小波变换方法对判断铁磁谐振的发生和频率以及检测故障发生时刻是很有效的。

Abstract

Ferromagnetic resonance

a common phenomenon in power system

frequently occurs in neutral isolated distribution net and neutral grounded networks.The consequent overvoltage and overcurrent do great harm to the power equipment

and result in a series of stabilization and safety problems.In this paper

the reason of the phenomenon is discussed.Besides

the wavelet toolbox in MATLAB is also used to analyze the ferromagnetic resonance caused by single-phase earthed fault in a 10 kV neutral isolated power system

detect the time of the fault and determine the resonance frequency.Simulation results show that the method is quite effective.

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