Calculation of Very Fast Transient Overvoltage for 800 kV GIS Substation

LIU Yapei; LIN Shengjun; GAO Wensheng; WANG Zhijun; JIN Guangyao; SUN Yingjie; ZHANG Bo; HE Haichuan

doi:10.13296/j.1001-1609.hva.2017.09.024

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Calculation of Very Fast Transient Overvoltage for 800 kV GIS Substation

更新时间：2025-04-26

- Calculation of Very Fast Transient Overvoltage for 800 kV GIS Substation
- High VoltageApparatus Vol. 53, Issue 9, Pages: 143-148+154(2017)
- 作者机构：
  
  1. 平高集团有限公司
  2. 清华大学电机工程与应用电子技术系
  3. 国网青海省电力公司检修公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.09.024
  CLC： TM63
- Published：2017
- 稿件说明：
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[1]刘亚培,林生军,高文胜,王之军,金光耀,孙英杰,张博,何海川.800 kV GIS变电站VFTO计算研究[J].高压电器,2017,53(09):143-148+154.

LIU Yapei, LIN Shengjun, GAO Wensheng, et al. Calculation of Very Fast Transient Overvoltage for 800 kV GIS Substation[J]. High voltageapparatus, 2017, 53(9): 143-148+154.
[1]刘亚培,林生军,高文胜,王之军,金光耀,孙英杰,张博,何海川.800 kV GIS变电站VFTO计算研究[J].高压电器,2017,53(09):143-148+154. DOI： 10.13296/j.1001-1609.hva.2017.09.024.

LIU Yapei, LIN Shengjun, GAO Wensheng, et al. Calculation of Very Fast Transient Overvoltage for 800 kV GIS Substation[J]. High voltageapparatus, 2017, 53(9): 143-148+154. DOI： 10.13296/j.1001-1609.hva.2017.09.024.

摘要

GIS变电站在隔离开关操时会产生快速暂态过电压（VFTO）。由于VFTO幅值很高

将严重威胁GIS设备、变压器和与其相连的二次设备。为了给GIS变电站的设计、布置提供参考

文中运用有限元分析方法

对800 kV GIS变电站中主要设备参数进行了计算

并通过实际测量验证了计算的正确性。应用EMTP程序对某800 kV GIS变电站在6种不同操作方式下

隔离开关合闸时产生的VFTO进行了仿真

得出了6种操作方式下

VFTO的最大值和出现的位置。通过与安全限值比较

得出了该800 kV GIS变电站绝缘符合要求的结论。最后对残余电压、阻尼电阻和短母线长度等影响VFTO幅值的因素进行了研究。

Abstract

The very fast transient overvoltage（VFTO） caused by operation of disconnector in a GIS substation will harm the GIS equipment

the transformer

and the secondary equipment connected with GIS due to its high amplitude. In this study

for design and layout of GIS substation

this paper calculated the parameter of major equipment of a 800 kV GIS substation

and the calculation was verified by measurement. Moreover

EMTP program was adopted to simulate the VFTO generated by disconnector in six different operating modes

thus the maximum values and location of VFTO in the six different operating modes of disconnector were obtained. comparison with the safe criteria indicated that the insulation of the 800 kV GIS substation meets the requirements. In addition

the factors influencing VFTO amplitude

such as residual voltage

damping resistance and short-bus length

were analyzed.

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