Novel DC Circuit Breaker Based on Current Commutation Principle

LING Youfu; CHEN Min; WANG Wanting

doi:10.13296/j.1001-1609.hva.2015.04.026

您当前的位置：

首页 >

文章列表页 >

Novel DC Circuit Breaker Based on Current Commutation Principle

更新时间：2025-04-26

- Novel DC Circuit Breaker Based on Current Commutation Principle
- High VoltageApparatus Vol. 51, Issue 4, Pages: 139-144(2015)
- 作者机构：
  
  杭州恒信电气有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.04.026
  CLC： TM561
- Published：2015
- 稿件说明：
移动端阅览
[1]林友福,陈敏,王万亭.一种基于两阶段电流转移的新型直流断路器[J].高压电器,2015,51(04):139-144.

LING Youfu, CHEN Min, WANG Wanting. Novel DC Circuit Breaker Based on Current Commutation Principle[J]. High voltageapparatus, 2015, 51(4): 139-144.
[1]林友福,陈敏,王万亭.一种基于两阶段电流转移的新型直流断路器[J].高压电器,2015,51(04):139-144. DOI： 10.13296/j.1001-1609.hva.2015.04.026.

LING Youfu, CHEN Min, WANG Wanting. Novel DC Circuit Breaker Based on Current Commutation Principle[J]. High voltageapparatus, 2015, 51(4): 139-144. DOI： 10.13296/j.1001-1609.hva.2015.04.026.

摘要

基于高速开关（fast-opening switch

FS）和并联电容电流强制转移原理的混合型直流断路器在直流系统短路电流分断中具有广泛的应用。但是

通过单阶段转移将故障电流从FS转移至并联电容器时

由于转移过程持续时间短

电容器需要在很短的时间内吸收系统电感中存储的能量

因此高速开关触头间过电压上升速率非常高

容易引起FS发生击穿而导致开断失败。针对上述问题

文中提出了一种基于两阶段电流转移的新型直流断路器

通过转移电路的晶闸管控制故障电流分两阶段给电容器充电

不仅可以实现FS无弧打开

而且可以显著降低开断过程中FS两端的过电压上升速率。此外

分断完成后电容器上的电压极性与初始状态一致

不需要重复充电。文中基于MATAB Simulink对该断路器在中压直流系统中不同短路电流上升率情况下的分断过程进行了仿真

并且与传统的单阶段转移过程进行了比较。最后

利用合成回路模拟直流短路故障

完成了故障电流开断实验研究

验证了仿真模型的可行性。

Abstract

The DC hybrid circuit breaker based on fast-opening switch（FS）and parallel connected capacitor has been widely applied in the fault current breaking of DC grid. However

when the fault current is commutated from FS to the parallel connected capacitor with single-stage current commutation

the capacitor has to absorb large energy stored in the system inductance within a short time

so a high over-voltage rate of rise occurs between contacts

which will lead to a failed breaking. In view of this

a novel DC circuit breaker based on current commutation has been proposed in this paper. By controlling the thyristor in the commutation branches

the fault current is commutated in two stages

which can not only realize the arc-less open of FS

but also decrease the over-voltage rate of rise obviously. Besides

the voltage polarity of capacitor after breaking is same as the initial state

which can avoid recharging. The simulation model of the fault current breaking is constructed on MATLAB Simulink platform under different conditions in medium voltage DC（MVDC） system

and the overvoltage of the single-stage commutation and the two-stage commutation during the fault current breaking are compared. Finally

the fault current breaking test based on synthesis loop is investigated experimentally

which proved that the simulation model is well feasible.

关键词

Keywords

references

Views

338

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Structural Parameter Optimization of Superconducting Current Limiter Based on MOPSO Algorithm

Hybrid High Voltage DC Circuit Breaker Topology with Current Limiting Capability

Research on Mechanical Fault Diagnosis Technology of DC Circuit Breaker Based on Support Vector Machine and Feature Dimension Reduction

Research on Mechanical Fault Mechanism Analysis and Feature Extraction Technology Based on Low Voltage DC Circuit Breaker

Breaking HVDC Circuit and ZnO Varistor for Enegy Absorber

Related Author

YUAN Zhao

YU Chaojie

DING Can

LI Jiang

WANG Hongyan

SUN Rui

QIAN Yang

LIU Zuosong

Related Institution

State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology

State Grid Shanxi Yangquan Power Supply Company

College of Electrical Engineering & New Energy, China Three Gorges University

School of Electric Power Engineering, Nanjing Institute of Technology

State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University

⁰