电气工程学报 ›› 2019, Vol. 14 ›› Issue (4): 46-50.doi: 10.11985/2019.04.007

• • 上一篇    下一篇

基于耦合负压电路的混合式直流断路器拓扑研究

彭昊1,夏向阳1,杨银2,廖萼辉3   

  1. 1. 长沙理工大学电气与信息工程学院 长沙 410114
    2. 华南理工大学电力学院 广州 510641
    3. 湖南大学电气与信息工程学院 长沙 410082
  • 收稿日期:2019-11-21 出版日期:2019-12-25 发布日期:2020-03-18
  • 作者简介:彭昊,男,1992年生,硕士研究生。主要研究方向为直流配电网保护技术。E-mail:774808249@qq.com|夏向阳,男,1968年生,博士,教授。主要研究方向为柔性直流输配电技术。E-mail:307351045@qq.com

Hybrid DC Circuit Breaker Based on Coupled Negative Pressure Circuit Research of Topological Analysis

Hao PENG1,Xiangyang XIA1,Yin YANG2,Ehui LIAO3   

  1. 1. School of Electrical and Information Engineering, Changsha University of Technology,Changsha 410114 China
    2. College of Electric Power, South China University of Technology, Guangzhou 510641 China
    3. College of Electrical and Information Engineering, Hunan University, Changsha 410082 China
  • Received:2019-11-21 Online:2019-12-25 Published:2020-03-18

摘要:

随着直流输电的发展,对直流输电系统的可靠性要求也越来越高,针对如何在直流电网中应用数毫秒内开断大电流的直流断路器,快速切除故障设备或线路,一种基于耦合负压电路与电力电子开关串联的低损耗强制换流混合式直流断路器被提出。通过拓扑结构原理的分析研究,耦合负压电路可以保证各个电流等级下,电流转移过程的可靠性。这种新型断路器结合了机械开关和固态开关的优点,通态损耗低,开断特性好,具有一定的应用前景。

关键词: 耦合负压电路, 电力电子开关, 混合式直流断路器, 通态损耗

Abstract:

With the development of DC transmission, the reliability requirements of DC transmission system becomes higher. Aiming at how to use the DC circuit breaker with large current to cut off the fault equipment or lines in a few milliseconds in DC power grid, a low loss forced commutation hybrid DC circuit breaker based on the coupling negative pressure circuit and the series connection of electric force electronic switch is proposed. Through the analysis and research of the topological structure principle, the coupling negative pressure circuit can ensure the reliability of the current transfer process under each current level. It combines the advantages of mechanical switch and solid-state switch, with low on-state loss and good breaking characteristics, and it has a certain application prospect.

Key words: Coupling negative pressure circuit, power electronic switch, hybrid DC circuit breaker, on-state loss

中图分类号: