Experiment Research on Breaking Capability of Mechanical Type HVDC Circuit Breaker

GAO Junzhen; DAN Shuheng; GU Wei; SHEN Jiebin; ZHU Xiaoxian

doi:10.13296/j.1001-1609.hva.2020.11.018

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Experiment Research on Breaking Capability of Mechanical Type HVDC Circuit Breaker

更新时间：2025-04-26

- Experiment Research on Breaking Capability of Mechanical Type HVDC Circuit Breaker
- High VoltageApparatus Vol. 56, Issue 11, Pages: 111-115+123(2020)
- 作者机构：
  
  1. 上海电力大学
  2. 思源电气股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.11.018
  CLC： TM561
- Published：2020
- 稿件说明：
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[1]高俊珍,淡淑恒,顾崴,沈杰斌,朱小贤.机械式高压直流断路器开断性能试验研究[J].高压电器,2020,56(11):111-115+123.

GAO Junzhen, DAN Shuheng, GU Wei, et al. Experiment Research on Breaking Capability of Mechanical Type HVDC Circuit Breaker[J]. High voltageapparatus, 2020, 56(11): 111-115+123.
[1]高俊珍,淡淑恒,顾崴,沈杰斌,朱小贤.机械式高压直流断路器开断性能试验研究[J].高压电器,2020,56(11):111-115+123. DOI： 10.13296/j.1001-1609.hva.2020.11.018.

GAO Junzhen, DAN Shuheng, GU Wei, et al. Experiment Research on Breaking Capability of Mechanical Type HVDC Circuit Breaker[J]. High voltageapparatus, 2020, 56(11): 111-115+123. DOI： 10.13296/j.1001-1609.hva.2020.11.018.

摘要

高压直流断路器是多端直流输电及高压直流系统联网的基础和安全保障

它不仅要能够开断短路电流而且要能够开断小负载电流

实现对高压直流系统的保护及控制功能。文中在振荡回路中对机械式高压直流断路器开断大电流及小电流的性能进行了测试。分别测试机械式高压直流断路器开断17.5 kA和开断50 A电流时的恢复电压值和恢复电压变化率。在试验中发现机械式高压直流断路器开断17.5 kA电流时可以在叠加高频振荡电流后的第1次过零点处开断

但是在开断50 A电流时需要在第2次电流过零点处才能开断。开断50 A电流时机械断路器上的恢复电压及恢复电压变化率均比开断17.5 kA电流时相应的值大。这一测试结果有助于全面了解高压直流断路器的性能。

Abstract

High voltage DC circuit breaker（HVDC） is the foundation and security guarantee of the interconnection of HVDC and HVDC systems.It can not only break short circuit current but also break small load current

so as to realize the protection and control of HVDC system.In this paper

the performance of mechanical high voltage direct current circuit breaker breaking large current and small current in oscillation circuit is tested.The recovery voltage and the recovery voltage change rate of the mechanical HVDC circuit breaker were respectively tested when the 17.5 kA and 50 A currents were cut off.In the experiment

it is found that the mechanical HVDC circuit breaker can break off at the first zero point when the high frequency oscillating current is superimposed when the 17.5 kA current is broken

but it needs to be broken at the second current zero point when the 50 A current is broken.When the 50 A current is switched off

the recovery voltage and the recovery voltage change rate of the mechanical circuit breaker are larger than the corresponding value when breaking the 17.5 kA current.The test results will help us to understand the performance of HVDC circuit breakers in a comprehensive way.

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