Simulation Study on Switching Overvoltage in Converter Substation Caused by Grounding Fault at the Top of High-voltage Thyristor Valve

GUO Yujing; ZHANG Hao

doi:10.13296/j.1001-1609.hva.2014.08.001

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Simulation Study on Switching Overvoltage in Converter Substation Caused by Grounding Fault at the Top of High-voltage Thyristor Valve

更新时间：2025-04-26

- Simulation Study on Switching Overvoltage in Converter Substation Caused by Grounding Fault at the Top of High-voltage Thyristor Valve
- High VoltageApparatus Vol. 50, Issue 8, Pages: 104-109+114(2014)
- 作者机构：
  
  平高集团有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.08.001
  CLC： TM862
- Published：2014
- 稿件说明：
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[1]郭煜敬,张豪.高压端换流阀顶端接地故障引起的换流站直流场操作过电压仿真研究[J].高压电器,2014,50(08):104-109+114.

GUO Yujing, ZHANG Hao. Simulation Study on Switching Overvoltage in Converter Substation Caused by Grounding Fault at the Top of High-voltage Thyristor Valve[J]. High voltageapparatus, 2014, 50(8): 104-109+114.
[1]郭煜敬,张豪.高压端换流阀顶端接地故障引起的换流站直流场操作过电压仿真研究[J].高压电器,2014,50(08):104-109+114. DOI： 10.13296/j.1001-1609.hva.2014.08.001.

GUO Yujing, ZHANG Hao. Simulation Study on Switching Overvoltage in Converter Substation Caused by Grounding Fault at the Top of High-voltage Thyristor Valve[J]. High voltageapparatus, 2014, 50(8): 104-109+114. DOI： 10.13296/j.1001-1609.hva.2014.08.001.

摘要

依据向家坝—上海特高压直流输电示范工程实际设备参数建立了仿真分析模型

研究了换流站高压端换流阀顶端接地故障引起操作过电压的机理及分布规律

并分析了增加E1H型避雷器并联柱数和提高中性母线绝缘水平两种方案对过电压的抑制效果

对后续特高压直流输电工程避雷器优化配置有一定的指导意义。

Abstract

A system simulation model is built with the parameters from the Xiangjiaba-Shanghai UHVDC transmission pilot project. The switching overvoltage generation mechanism and its distribution induced by grounding fault at the top of high-voltage thyristor valve are analyzed with the model. Moreover

two overvoltage suppressing methods

adding more E1 H type arresters in parallel and increasing the insulation level at neutral line

and the suppressing results are also analyzed which may be of reference to the optimization layout of arresters for future UHVDC projects.

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