Analysis of Impacting Factors on Breaking Capacity of Modular Hybrid DC Circuit Breaker

ZHANG Jun; WU Jinlong; WANG Xianwei; YAO Weizheng

doi:10.13296/j.1001-1609.hva.2018.12.031

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Analysis of Impacting Factors on Breaking Capacity of Modular Hybrid DC Circuit Breaker

更新时间：2025-04-26

- Analysis of Impacting Factors on Breaking Capacity of Modular Hybrid DC Circuit Breaker
- High VoltageApparatus Vol. 54, Issue 12, Pages: 204-211(2018)
- 作者机构：
  
  1. 西安许继电力电子技术有限公司
  2. 许继集团有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.12.031
  CLC： TM561
- Published：2018
- 稿件说明：
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[1]张军,吴金龙,王先为,姚为正.模块化混合型直流断路器开断能力影响因素分析[J].高压电器,2018,54(12):204-211.

ZHANG Jun, WU Jinlong, WANG Xianwei, et al. Analysis of Impacting Factors on Breaking Capacity of Modular Hybrid DC Circuit Breaker[J]. High voltageapparatus, 2018, 54(12): 204-211.
[1]张军,吴金龙,王先为,姚为正.模块化混合型直流断路器开断能力影响因素分析[J].高压电器,2018,54(12):204-211. DOI： 10.13296/j.1001-1609.hva.2018.12.031.

ZHANG Jun, WU Jinlong, WANG Xianwei, et al. Analysis of Impacting Factors on Breaking Capacity of Modular Hybrid DC Circuit Breaker[J]. High voltageapparatus, 2018, 54(12): 204-211. DOI： 10.13296/j.1001-1609.hva.2018.12.031.

摘要

基于半桥子模块拓扑的模块化多电平电压源换流器（HBSM-MMC）和直流断路器构建的柔性直流电网能够实现大规模新能源的并网和消纳

发展前景良好。柔性直流电网技术的发展主要限制于高压直流断路器

因此对高压直流断路器开断过程以及开断能力影响因素的研究十分有必要。文中首先研究了适用于HBSM-MMC柔性直流电网的模块化混合型高压直流断路器运行原理;并在此基础上详细分析了模块化混合型直流断路器开断时间的影响因素;然后研究了直流断路器过电压的影响因素;最后在PSCAD/EMTDC软件对柔性直流电网中直流断路器开断能力影响因素进行了仿真验证。通过文中的研究可知

通过降低机械开关开断时间、减小转移支路电容以及调整避雷器参考电压都能够提高直流断路器的开断能力。

Abstract

Flexible high voltage direct curren（tHVDC）grid based on half-bridge sub-modules modular multi-level converter（HBSM-MMC）and DC circuit breaker is an effective approach to implement large-scale renewable energy integration and accommodation

it would be used widely in future.Flexible HVDC grid technology is mainly limited to the high voltage DC circuit breaker.It is necessary and significant to research the breaking process and capability impact factors of DC circuit breaker for flexible HVDC grid.Firstly

the operation of HBSM-MMC and modular hybrid DC circuit breaker are analyzed in this paper.Based on this

impact factors of modular hybrid DC circuit breaker breaking time would be analyzed comprehensively.Above this

the overvoltage impact factors of modular hybrid DC circuit breaker in flexible HVDC grid are calculated.Finally

modular hybrid DC circuit breaker and flexible HVDC grid model is built by PSCAD/EMTDC

the breaking capability impact factors is simulated.According to the analysis and result

breaking capacity would be upgraded by decreasing mechanical switch breaking time

decreasing capacitance of commutation branch and adjusting arrester voltage rating.

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