Development of Multi-functional Insulation Testing Equipment for Distribution Power Cables Based on Cosine rectangular Wave

GUO Jianzhao

doi:10.13296/j.1001-1609.hva.2020.07.032

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Development of Multi-functional Insulation Testing Equipment for Distribution Power Cables Based on Cosine rectangular Wave

更新时间：2025-04-26

- Development of Multi-functional Insulation Testing Equipment for Distribution Power Cables Based on Cosine rectangular Wave
- High VoltageApparatus Vol. 56, Issue 7, Pages: 218-223(2020)
- 作者机构：
  
  国网福建省电力有限公司泉州供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.07.032
  CLC： TM855
- Published：2020
- 稿件说明：
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[1]郭建钊.基于余弦方波的配电电缆绝缘多功能测试装置的研制[J].高压电器,2020,56(07):218-223.

GUO Jianzhao. Development of Multi-functional Insulation Testing Equipment for Distribution Power Cables Based on Cosine rectangular Wave[J]. High voltageapparatus, 2020, 56(7): 218-223.
[1]郭建钊.基于余弦方波的配电电缆绝缘多功能测试装置的研制[J].高压电器,2020,56(07):218-223. DOI： 10.13296/j.1001-1609.hva.2020.07.032.

GUO Jianzhao. Development of Multi-functional Insulation Testing Equipment for Distribution Power Cables Based on Cosine rectangular Wave[J]. High voltageapparatus, 2020, 56(7): 218-223. DOI： 10.13296/j.1001-1609.hva.2020.07.032.

摘要

文中研制了一种兼具产生超低频余弦方波和振荡波的多功能高压发生装置

利用该装置既可以开展电缆绝缘的耐受电压能力测试

也可以开展局部放电检测。装置主要由快速充电单元、放电单元、高压电抗器以及局放检测单元组成。放电单元作为装置的核心单元

其实现采用了基于串联IGBT为核心的高压半导体开关

以满足系统最高30 kV峰值电压输出的需求。整套装置可以在余弦方波和直流振荡波两种模式下独立工作.在实验室中搭建系统平台

对中间接头处有缺陷电缆进行了局部放电检测。实验结果验证了多功能高压发生装置用于电缆绝缘测试的有效性。

Abstract

This paper presents the development of a novel multi-functional high voltage testing equipment with the capability of generating both very low frequency（VLF）cosine rectangular wave（CRV）and oscillatory wave. The equipment consists of a fast charging unit

a discharging unit

high voltage reactor and partial discharge detection unit. As the core unit of the equipment

the discharging united based on insulated gate bipolar transistor（IGBT）series-connected is developed that could meet the demand for 30 kV peak testing voltage. The whole device can work independently in cosine rectangular wave and DC oscillation wave. An experiment platform is built in the laboratory

and a PD test is performed on a section of cable with artificial defect. The results validate the effectiveness of the equipment for testing cable insulation.

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