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

被引：0
|
作者：
Wang X. [1 ]
Shu Z. [1 ]
Duan S. [1 ]
Wang H. [1 ]
Wu K. [1 ]
机构：
[1] State Key Laboratory of Electric Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an
来源：
Wang, Xia (wxflying@mail.xjtu.edu.cn) | 1600年 / Science Press卷 / 46期
基金：
国家重点研发计划;
关键词：
Duty ratio; Frequency; Pulsed electroacoustic method; Space charge; Square wave;
D O I：
10.13336/j.1003-6520.hve.20200131030
中图分类号：
O441.1 [电学]; TM12 [];
学科分类号：
摘要：
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. © 2020, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：634 / 639
页数：5
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