Research on Protection Against Lightning Over-voltage on Transformer in a 220 kV GIS Substation

LIU Qing; ZHANG Yu-feng; CHENG Yong

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Research on Protection Against Lightning Over-voltage on Transformer in a 220 kV GIS Substation

更新时间：2025-04-26

- Research on Protection Against Lightning Over-voltage on Transformer in a 220 kV GIS Substation
- High VoltageApparatus Issue 4, Pages: 329-331(2008)
- 作者机构：
  
  西安科技大学电控学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM862
- Published：2008
- 稿件说明：
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[1]刘青,张玉峰,程勇.220kV GIS变电站雷电过电压防护措施的研究[J].高压电器,2008(04):329-331.

LIU Qing, ZHANG Yu-feng, CHENG Yong. Research on Protection Against Lightning Over-voltage on Transformer in a 220 kV GIS Substation[J]. High voltageapparatus, 2008, (4): 329-331.
[1]刘青,张玉峰,程勇.220kV GIS变电站雷电过电压防护措施的研究[J].高压电器,2008(04):329-331. DOI：

LIU Qing, ZHANG Yu-feng, CHENG Yong. Research on Protection Against Lightning Over-voltage on Transformer in a 220 kV GIS Substation[J]. High voltageapparatus, 2008, (4): 329-331. DOI：

摘要

利用电磁暂态程序ATP-EMTP计算了某220 kV GIS变电站进线落雷时的GIS内部设备以及主变压器上出现的雷电过电压

分析了运行方式及变压器入口电容对雷电过电压的影响

研究了MOA不同配置方案对变压器以及GIS内部设备的保护效果

分析表明

即使对于通过电缆与GIS相连的变压器

旁边也不必装设MOA

3台进线MOA可以给系统提供可靠的保护

变压器入口电容对雷电过电压的影响不大。

Abstract

The lightning over-voltages on transformers and the equipments in GIS in a 220 kV gas insulated substation（GIS） were calculated with ATP-EMTP software.The effects of operation modes and entrance capacitance value on lightning over-voltage were analyzed

and different protective schemes of transformer with MOA were compared.The results show that even for the transformer which is connected to GIS by cable line

its side MOA is unnecessary;the MOAs on three entrance cables provide reliable protection of transformer;and the entrance capacitance has little effect on lightning over-voltage.

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