Space Charge Accumulation Property in XLPE Under Applied Voltage of Square Wave

WANG Xia; SHU Zihang; DUAN Shengjie; WANG Huanan; WU Kai

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Space Charge Accumulation Property in XLPE Under Applied Voltage of Square Wave

更新时间：2025-12-08

- Space Charge Accumulation Property in XLPE Under Applied Voltage of Square Wave
- Vol. 46, Issue 2, Pages: 634-639(2020)
- 作者机构：
  
  西安交通大学电力设备与电气绝缘国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：29 February 2020，
  
  Published：2020
- 稿件说明：
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WANG Xia, SHU Zihang, DUAN Shengjie, et al. Space Charge Accumulation Property in XLPE Under Applied Voltage of Square Wave[J]. 2020, 46(2): 634-639.
DOI：

WANG Xia, SHU Zihang, DUAN Shengjie, et al. Space Charge Accumulation Property in XLPE Under Applied Voltage of Square Wave[J]. 2020, 46(2): 634-639. DOI：

摘要

空间电荷现象在电气绝缘破坏中起着重要作用

但多年以来对空间电荷的研究主要集中于直流电压下

而针对方波电压下空间电荷的研究较少。为此对传统的电声脉冲法（pulsed electro-acoustic method

PEA）进行改进

可以同时向试样施加可调相位差的方波电压和脉冲电压

并利用该装置研究了不同波形参数（波形、极性、频率、占空比等）对空间电荷分布的影响。实验结果表明:方波电压下更易积累同极性电荷

单极性方波下的空间电荷积累远大于双极性方波

高频方波下空间电荷积累更为严重

占空比的增加也会导致积累电荷量的增加。

Abstract

Space charge phenomena play an important role in dielectric breakdown

and most studies have focused on space charge accumulation characteristic under DC voltage; however

few studies have focused on space charge under square voltage. Consequently

we improved the traditional pulsed electroacoustic method（PEA） to present a new method for space charge measurement under square wave voltage. Using this method

we can measure the space charge distribution under square waveform of various waveform parameters（polarity

frequency

duty ratio

etc.）. From the measurement result

it is found that homo-charge is more likely to accumulate under square wave voltage

and the space charge accumulation under unipolar square wave is much larger than that of bipolar square wave. Furthermore

a high frequency square wave will cause more serious charge accumulation

and an increase in the duty cycle will also result in an increase in the amount of accumulated charge.

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Related Institution

Electric Power Research Institute, China Southern Power Grid

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Institute of Electrostatic and Electromagnetic Protection, Mechanical Engineering College

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