Research on Insulation Characteristics of Multi-layers Dielectrics Under Polarity Reversal Based on Field-circuit Coupling Method

ZHANG Qi-min1; ZHANG Liang-xian2; CHEN Mo-sheng2

doi:10.13296/j.1001-1609.hva.2013.08.018

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Research on Insulation Characteristics of Multi-layers Dielectrics Under Polarity Reversal Based on Field-circuit Coupling Method

更新时间：2025-04-26

- Research on Insulation Characteristics of Multi-layers Dielectrics Under Polarity Reversal Based on Field-circuit Coupling Method
- High VoltageApparatus Vol. 49, Issue 8, Pages: 102-106+111(2013)
- 作者机构：
  
  1. 西安西电变压器有限责任公司
  2. 西安交通大学电力设备电气绝缘国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.08.018
  CLC： TM721.1
- Published：2013
- 稿件说明：
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[1]张启民,张良县,陈模生.基于场路耦合方法的多层电介质极性反转绝缘特性研究[J].高压电器,2013,49(08):102-106+111.

ZHANG Qi-min1, ZHANG Liang-xian2, CHEN Mo-sheng2. Research on Insulation Characteristics of Multi-layers Dielectrics Under Polarity Reversal Based on Field-circuit Coupling Method[J]. High voltageapparatus, 2013, 49(8): 102-106+111.
[1]张启民,张良县,陈模生.基于场路耦合方法的多层电介质极性反转绝缘特性研究[J].高压电器,2013,49(08):102-106+111. DOI： 10.13296/j.1001-1609.hva.2013.08.018.

ZHANG Qi-min1, ZHANG Liang-xian2, CHEN Mo-sheng2. Research on Insulation Characteristics of Multi-layers Dielectrics Under Polarity Reversal Based on Field-circuit Coupling Method[J]. High voltageapparatus, 2013, 49(8): 102-106+111. DOI： 10.13296/j.1001-1609.hva.2013.08.018.

摘要

极性反转是直流输电设备的一种特殊工作状态。笔者以三层电介质复合绝缘结构为研究对象

采用场路耦合方法

建立了介质极性反转的数学模型

分析了极性反转时各层电介质中的电场分布、电流特性

以及热生成率随时间变化的关系

最后还分析了不同介质交界面上电荷极性反转的特点。研究结果可为直流输电设备绝缘结构设计提供参考。

Abstract

The polarity reversal is a special working condition of equipments in high voltage direct current（HVDC） transmission.A three-layers dielectrics composite insulation structure was taken as an example

and the mathematical model under polarity reversal was established in this paper with field-circuit coupling method

the characteristics of space charge at the interfaces of the different dielectrics as well as temporal variation laws of the electric field distribution

current characteristics and heat generation rate were analysed.The results in this paper could provide references for the insulation design of HVDC equipments.

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