Study on Grading Capacitor Allocation Across Open Contacts of 1 100 kV Live Tank Circuit Breaker

WU Wenhai; WANG Na; ZHANG Hao

doi:10.14044/j.1674-1757.pcrpc.2018.01.015

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Study on Grading Capacitor Allocation Across Open Contacts of 1 100 kV Live Tank Circuit Breaker

更新时间：2024-09-14

- Study on Grading Capacitor Allocation Across Open Contacts of 1 100 kV Live Tank Circuit Breaker
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 39, Issue 1, Pages: 76-80(2018)
- 作者机构：
  
  新东北电气集团高压开关设备有限公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2018.01.015
  CLC： TM561
- Published：2018，
- 稿件说明：
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[1]吴文海,王娜,张浩.特高压1100 kV柱式断路器断口均压电容器配置研究[J].电力电容器与无功补偿,2018,39(01):76-80.

WU WENHAI, WANG NA, ZHANG HAO. Study on Grading Capacitor Allocation Across Open Contacts of 1 100 kV Live Tank Circuit Breaker. [J]. Power capacitor & reactive power compensation, 2018, 39(1): 76-80.
[1]吴文海,王娜,张浩.特高压1100 kV柱式断路器断口均压电容器配置研究[J].电力电容器与无功补偿,2018,39(01):76-80. DOI： 10.14044/j.1674-1757.pcrpc.2018.01.015.

WU WENHAI, WANG NA, ZHANG HAO. Study on Grading Capacitor Allocation Across Open Contacts of 1 100 kV Live Tank Circuit Breaker. [J]. Power capacitor & reactive power compensation, 2018, 39(1): 76-80. DOI： 10.14044/j.1674-1757.pcrpc.2018.01.015.

摘要

特高压柱式断路器由多断口串联的灭弧室组成

在开关挂网运行时

各断口承受的电压由于分布电容的影响分配不均匀

断路器断口并联均压电容器

可以保证各个断口的电压分布较为均匀。本文以1 100 kV柱式断路器为研究对象

利用ANSYS有限元分析软件计算断路器断口分布电容

并应用数字仿真软件ATP建立电容等值模型

计算不同均压电容器配置方式下各断口的电压不均匀系数。计算结果表明:当柱式断路器4个断口并联的电容器容量分别为2 500 pF

2 000 pF

2 500 pF时

各断口的电压不均匀系数均小于1.1

电压分布较为均匀。

Abstract

UHV live tank circuit breaker is made of interrupter with multi-breaks. The open contacts of the circuit breaker is with grading capacitor in parallel since due to the uneven voltage distribution of each break by the distributed capacitance when the breaker is in operation in the grid in order to assure even voltage distribution of each break. In this paper

the 1 100 kV live tank circuit breaker is taken as the study object

the distributed capacitance across open contacts of the circuit breaker is calculated by the definite element analysis software of the ANSYS

the equivalent capacitance model is set up by the digital simulation software ATP to calculate uneven coefficient of voltage for each open contacts at different capacitor allocation mode. It is shown by the calculation result that when the capacitance of shunt capacitors in the four open contacts of the live tank circuit breaker is 2 500 pF

2 000 pF

2 000 pF and 2 500 pF respectively

the voltage uneven coefficient for each open contacts is less than 1.1 and the voltage distribution is fairly even.

关键词

柱式断路器均压电容器分布电容

Keywords

live tank circuit breakergrading capacitordistribution capacitance

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Related Institution

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