Analysis of the Models for Calculating Lightning Invading Over-voltage in 750kV AIS Substation

ZHAO Dan-dan1; GUO Jie1; GAO Yuan2; HAN Zheng1; ZHANG Peng-jiao3

doi:10.13296/j.1001-1609.hva.2010.08.015

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Analysis of the Models for Calculating Lightning Invading Over-voltage in 750kV AIS Substation

更新时间：2025-04-26

- Analysis of the Models for Calculating Lightning Invading Over-voltage in 750kV AIS Substation
- High VoltageApparatus Vol. 46, Issue 8, Pages: 1-5(2010)
- 作者机构：
  
  1. 西安交通大学电气学院
  2. 华东电力设计院
  3. 西北电力设计院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2010.08.015
  CLC： TM861
- Published：2010
- 稿件说明：
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[1]赵丹丹,郭洁,高媛,韩政,张鹏娇.750kV敞开式变电站侵入波过电压的计算模型研究[J].高压电器,2010,46(08):1-5.

ZHAO Dan-dan1, GUO Jie1, GAO Yuan2, et al. Analysis of the Models for Calculating Lightning Invading Over-voltage in 750kV AIS Substation[J]. High voltageapparatus, 2010, 46(8): 1-5.
[1]赵丹丹,郭洁,高媛,韩政,张鹏娇.750kV敞开式变电站侵入波过电压的计算模型研究[J].高压电器,2010,46(08):1-5. DOI： 10.13296/j.1001-1609.hva.2010.08.015.

ZHAO Dan-dan1, GUO Jie1, GAO Yuan2, et al. Analysis of the Models for Calculating Lightning Invading Over-voltage in 750kV AIS Substation[J]. High voltageapparatus, 2010, 46(8): 1-5. DOI： 10.13296/j.1001-1609.hva.2010.08.015.

摘要

为使模拟计算结果更接近实际

需要研究雷电侵入波过电压计算模型的准确性。笔者研究了输电线路模型和绝缘子串闪络时的弧道电阻对站内设备过电压和MOA动作负荷的影响。结果表明

输电线路用LCC（Line/Cable Constants）模型模拟时

站内设备的最大过电压和MOA吸收能量比用单相等值波阻抗模拟时分别减小了22.2%和增多了24.0%;避雷器3种模型计算结果差别不大

但综合考虑计算的方便性和准确性

建议用集中模型模拟避雷器;弧道电阻对站内设备的过电压影响也很显著。

Abstract

To understand the accuracy of diffe rent models for calculating lightning invading over-voltage in transformer substation

the effects of different transmission line models and electric-arc resistance due to flash over of insulator-string on the over-voltage on equipments and MOA load in a 750 kV AIS substation are studied.The results show that the maximum over-voltage on equipments is 22.2%lower when the transmission lines are simulated with LCC（Line/Cable Constants） model than with single phase wave impedance model

while the maximum energy absorbed by MOA is 24.0%higher.Although the calculation results from three arrester models are approximate each other

the lumped model is recommended considering its convenience and accuracy.The effect of electric-arc resistance on the over-voltage on equipments can not be ignored.

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