Study on VFTO Calculation and Inhibition Method of 550kV GIS Station

WU Shipu; LI Xuan; ZANG Ying; CHENG Junwei; DU Jianping; ZHANG Jian; LI Sen

doi:10.13296/j.1001-1609.hva.2018.01.013

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Study on VFTO Calculation and Inhibition Method of 550kV GIS Station

更新时间：2025-04-26

- Study on VFTO Calculation and Inhibition Method of 550kV GIS Station
- High VoltageApparatus Vol. 54, Issue 1, Pages: 90-96(2018)
- 作者机构：
  
  1. 中国电力科学研究院
  2. 山东电力设备有限公司
  3. 国网山东省电力公司枣庄供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.01.013
  CLC： TM63
- Published：2018
- 稿件说明：
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[1]吴士普,李璿,臧英,程军卫,杜建平,张健,李森.550kV GIS站VFTO计算及抑制方法研究[J].高压电器,2018,54(01):90-96.

WU Shipu, LI Xuan, ZANG Ying, et al. Study on VFTO Calculation and Inhibition Method of 550kV GIS Station[J]. High voltageapparatus, 2018, 54(1): 90-96.
[1]吴士普,李璿,臧英,程军卫,杜建平,张健,李森.550kV GIS站VFTO计算及抑制方法研究[J].高压电器,2018,54(01):90-96. DOI： 10.13296/j.1001-1609.hva.2018.01.013.

WU Shipu, LI Xuan, ZANG Ying, et al. Study on VFTO Calculation and Inhibition Method of 550kV GIS Station[J]. High voltageapparatus, 2018, 54(1): 90-96. DOI： 10.13296/j.1001-1609.hva.2018.01.013.

摘要

VFTO对设备的危害随着额定电压的提高而增大

超特高压VFTO的抑制对保障GIS变电站设备安全运行起到重要作用。文中提出一种阻尼母线的设计思想

该阻尼母线由镂空螺线管及与之并联的电阻组成

在工频下

对母线的绝缘性能、通流能力及力学性能不造成影响

在高频下

行波电流在电感端形成高电压

其两端阻尼电阻可在高压作用下吸收行波能量。文中建立某550kV典型GIS站VFTO计算模型

分别对该550kV GIS变电站检修转运行8种情况的40种操作方式下变电站各主要节点VFTO情况进行分析

得到隔离开关操作产生最大VFTO的分布图。依据最大VFTO幅值分布情况加装阻尼母线

经计算

由隔离开关操作产生的高幅值VFTO次数显著减少

整站VFTO最大幅值由3.0 p.u.降低至2.2 p.u.而将母线Ⅰ右端出现的3.0 p.u.的幅值降低至了1.4 p.u.。研究结果表明:阻尼母线可有效降低VFTO幅值及频率

对降低由于VFTO造成的GIS内部设备、外部连接设备以及二次设备的安全问题有显著效果。

Abstract

The damage of VFTO to the equipment increases with the increase of the rated voltage

and thesuppression of VFTO is of great importance to guarantee the safe operation of the equipment of the GIS substation.Bus design thought

this paper puts forward a kind of damping of the damper bus consists of hollow out solenoid andparallel with the resistance

under power frequency

the insulation performance of busbar

flow capacity andmechanical properties of impact

under the high frequency

the traveling wave current form high voltage through theinductor

the wave energy can be absorbed by the two end damping resistors under the high voltage. This paper setup a typical 550kV GIS station VFTO calculation model

the analysis of the VFTO situation of the main nodes of thesubstation are analyzed under the cases of the 550kV GIS substation maintenance turns 40 kinds of operating modeunder the eight kinds of running condition

the distribution diagram of the maximum VFTO generated bydisconnector operation is obtained. According to the largest VFTO amplitude distribution of busbar equipped withdamping

by the calculation

high amplitude VFTO produced by isolating switch operation times is significantlyreduced

site VFTO most large amplitude reduced from 3.0 p.u. to 2.2 p.u.

and bus bar Ⅰ right end of 3.0 p.u.amplitude reduced to 1.4 p.u.. In this paper

the research results show that the damping bus can effectively reducethe VFTO amplitude and frequency

to reduce caused by VFTO GIS internal equipment

external connectionequipment and secondary equipment safety issues have a significant effect.

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