Topology Design and Analysis of 10 kV Inductively Coupled DC Current-limiting Circuit Breaker

TIAN Jun; LIU Xiaoming; CHEN Hai; JIANG Wentao; REN Yupeng; SHI Hongfei

doi:10.13296/j.1001-1609.hva.2025.08.003

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Topology Design and Analysis of 10 kV Inductively Coupled DC Current-limiting Circuit Breaker

Research & Analysis | 更新时间：2025-08-08

- Topology Design and Analysis of 10 kV Inductively Coupled DC Current-limiting Circuit Breaker
- High Voltage Apparatus Vol. 61, Issue 8, Pages: 22-31(2025)
- 作者机构：
  
  1.河北工业大学电气工程学院省部共建电工装备可靠性与智能化国家重点实验室，天津　300401
  2.天津工业大学机械工程学院，天津　300387
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China Under Grant(52177139);Science and Technology Program of Hebei(E2020202086;E2021202186)
- DOI：10.13296/j.1001-1609.hva.2025.08.003
  CLC：
- Received：11 January 2025，
  
  Revised：16 April 2025，
  
  Published：16 August 2025
- 稿件说明：
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TIAN Jun, LIU Xiaoming, CHEN Hai, et al. Topology Design and Analysis of 10 kV Inductively Coupled DC Current-limiting Circuit Breaker[J]. High voltage apparatus, 2025, 61(8): 22-31.
DOI：

TIAN Jun, LIU Xiaoming, CHEN Hai, et al. Topology Design and Analysis of 10 kV Inductively Coupled DC Current-limiting Circuit Breaker[J]. High voltage apparatus, 2025, 61(8): 22-31. DOI： 10.13296/j.1001-1609.hva.2025.08.003.

摘要

针对中压直流配电网控制与保护需求，提出一种电感耦合型直流限流断路器拓扑，利用电感耦合技术实现快速换流和有效抑制故障电流，从而降低开断电流和IGBT使用数量，提高分断速度。在对拓扑结构和动作过程分析基础上，进行理论推导及参数设计，最后基于Pscad/Emtdc分别搭建单端等效电路和±10 kV三端中压直流配电网仿真模型，验证理论分析和参数设计的正确性。与现有典型方案对比分析结果表明，所设计直流断路器能够在4 ms内完全切除短路故障电流，兼具快速分断性与经济性。

Abstract

Regarding the control and protection requirements of medium voltage DC distribution network

an inductively coupled DC current-limiting circuit breaker topology is proposed

which uses inductively coupled technology to achieve fast commutation and effectively suppress fault current

thus reducing the breaking current and the quantity of IGBTs used as well as improving the switching speed. Theoretical derivation and parameter design are performed on the basis of analysis of topology and operation process. Finally

simulation models of single ended equivalent circuit and ± 10 kV three terminal medium voltage DC distribution network are set up respectively based on Pscad/Emtdc to verify the correctness of theoretical analysis and parameter design. The comparison analysis result with the existing typical scheme shows that the designed DC circuit breaker can completely clear short-circuit fault current within 4 ms and have concurrently fast switching and economic performance.

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