Hybrid High Voltage DC Circuit Breaker Topology with Current Limiting Capability

ZHOU Meng’en; WANG Hongyan; SUN Rui; QIAN Yang; LIU Zuosong; QIN Yu

doi:10.13296/j.1001-1609.hva.2024.04.013

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Hybrid High Voltage DC Circuit Breaker Topology with Current Limiting Capability

Research & Analysis | 更新时间：2025-04-26

- Hybrid High Voltage DC Circuit Breaker Topology with Current Limiting Capability
- High Voltage Apparatus Vol. 60, Issue 4, Pages: 101-112(2024)
- 作者机构：
  
  南京工程学院电力工程学院，南京　 211167
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51906098)
- DOI：10.13296/j.1001-1609.hva.2024.04.013
  CLC：
- Received：08 November 2023，
  
  Revised：20 January 2024，
  
  Published：16 April 2024
- 稿件说明：
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ZHOU Meng’en, WANG Hongyan, SUN Rui, et al. Hybrid High Voltage DC Circuit Breaker Topology with Current Limiting Capability[J]. High voltage apparatus, 2024, 60(4): 101-112.
DOI：

ZHOU Meng’en, WANG Hongyan, SUN Rui, et al. Hybrid High Voltage DC Circuit Breaker Topology with Current Limiting Capability[J]. High voltage apparatus, 2024, 60(4): 101-112. DOI： 10.13296/j.1001-1609.hva.2024.04.013.

摘要

直流断路器（DCCB）是解决直流系统短路故障的重要手段，针对现有DCCB存在的限流效果差、避雷器使用寿命短和故障隔离速度慢等一系列缺陷，文中提出一种具备限流能力的混合式高压直流断路器拓扑（CLC-HDCCB）方案。CLC-HDCCB载流支路和转移支路采用双桥式结构，具备双向通断能力；限流部分采用限流电阻和限流电感并联限流方式，显著降低了故障电流峰值及上升率；设计泄能电阻在断路过程中将限流电感旁路，减少了避雷器单次开断吸收的能量；对所提CLC-HDCCB方案分断故障电流、正常合闸和分断小电流等直流系统出现的各种工况进行了详细分析，并给出参数选定的方法。最后在PSCAD/EMTDC平台进行仿真验证，结果表明所提CLC-HDCCB方案与现有DCCB方案相比在故障限流、避雷器吸能和故障清除时间等方面具有一定的优势。

Abstract

DC circuit breaker (DCCB) is an important means to solve the short-circuit fault of DC system. In view of such a series of defects as weak current limiting effect

short operation life of arrester and slow fault isolation speed of the existing DCCB

a kind of hybrid high-voltage DC circuit breaker topology solution with current limiting capability (CLC-HDCCB) is proposed in this paper. The CLC-HDCCB current-carrying branch and transfer branch adopt double-bridge structure and possesses bidirectional on-off capability. The current-limiting part adopts current-limiting resistor inductor in parallel to limit the current

which significantly reduces the peak value and rise rate of fault current. The designed bleeder resistor bypasses the current-limiting inductance during the circuit breaking process

which reduces the energy absorbed by the arrester in single breaking operation. In addition

various conditions occurred in such DC system as breaking fault current

normal closing operation and breaking small current of the CLCHDCCB scheme is analyzed in detail and also the parameter selection method is given. Finally

the simulation verification is carried out on the PSCAD/EMTDC platform

and the results show that the proposed CLC-HDCCB scheme has certain advantages compared with the existing DCCB scheme in terms of fault current limiting

arrester energy absorption and fault clearing time.

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