Calculation and Analysis of Multiple Restrikes VFTO Based on Piecewise Arc Model

ZHANG Jiangong; WANG Hongchao; ZHAO Jun; LIU Zhenhuan; XIE Pengkang; CHEN Henglin

doi:10.13296/j.1001-1609.hva.2016.05.003

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Calculation and Analysis of Multiple Restrikes VFTO Based on Piecewise Arc Model

更新时间：2025-04-26

- Calculation and Analysis of Multiple Restrikes VFTO Based on Piecewise Arc Model
- High VoltageApparatus Vol. 52, Issue 5, Pages: 14-19+26(2016)
- 作者机构：
  
  1. 中国电力科学研究院武汉分院电网环境保护国家重点实验室
  2. 中国电力技术装备有限公司
  3. 浙江大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.05.003
  CLC： TM564.1
- Published：2016
- 稿件说明：
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[1]张建功,王红超,赵军,刘震寰,谢鹏康,陈恒林.基于分段电弧模型的多次重燃弧VFTO计算与分析[J].高压电器,2016,52(05):14-19+26.

ZHANG Jiangong, WANG Hongchao, ZHAO Jun, et al. Calculation and Analysis of Multiple Restrikes VFTO Based on Piecewise Arc Model[J]. High voltageapparatus, 2016, 52(5): 14-19+26.
[1]张建功,王红超,赵军,刘震寰,谢鹏康,陈恒林.基于分段电弧模型的多次重燃弧VFTO计算与分析[J].高压电器,2016,52(05):14-19+26. DOI： 10.13296/j.1001-1609.hva.2016.05.003.

ZHANG Jiangong, WANG Hongchao, ZHAO Jun, et al. Calculation and Analysis of Multiple Restrikes VFTO Based on Piecewise Arc Model[J]. High voltageapparatus, 2016, 52(5): 14-19+26. DOI： 10.13296/j.1001-1609.hva.2016.05.003.

摘要

精确的隔离开关电弧模型对变电站特快速暂态过电压（very fast transient overvoltage

VFTO）的仿真有着关键性的作用。文中对开关电弧的电阻模型进行了优化

建立了电弧的分段模型。同时

笔者从间隙击穿

高频电弧熄弧对电弧重击穿的影响等方面进行了讨论

并以此为判据

建立了可以反映VFTO多次重燃过程的计算流程。根据实际测试线路

在ATP仿真软件中搭建了仿真电路并进行了暂态仿真。仿真结果表明

相对于单次燃弧的传统电弧模型

基于分段电阻的多次重燃弧模型可以更好地模拟实际开关特性。在此基础之上

文中对重燃弧过程中各个关键位置的VFTO波形以及流过隔离开关的电流波形进行了计算与分析。

Abstract

Precise arc model of disconnecting switches plays an important role in multiple restrikes very fast transient overvoltage（VFTO）simulation. In this paper

switch arc resistance model is optimized and a piecewise model is built. Meanwhile

the influence of gap breakdown and high frequency arc extinguishing to the restrikes of VFTO is discussed. An arc calculating flow of disconnecting switches is built which can reflect the multiple restrikes.According to real test line

the simulation model is built in ATP software

and dynamic simulation has been done.The results show that the piecewise resistor multiple-restrike model is better than the traditional single-restrike model in simulation of the physical process of VFTO. Using the proposed model

the VFTO in key positions and current waveform through the disconnector are analyzed during the arcing process.

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