500 kV整流型混合式高压直流断路器

SHI Wei

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500 kV整流型混合式高压直流断路器

更新时间：2025-08-13

- 500 kV整流型混合式高压直流断路器
- Automation of Electric Power Systems Vol. 42, Issue 7, Pages: 102-107(2018)
- 作者机构：
  
  南京南瑞继保电气有限公司,江苏省,南京市,211102
- 作者简介：
- 基金信息：
- DOI：
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- Published：2018
- 稿件说明：
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SHI Wei. [J]. Automation of electric power systems, 2018, 42(7): 102-107.
DOI：

SHI Wei. [J]. Automation of electric power systems, 2018, 42(7): 102-107. DOI：

摘要

直流断路器作为柔性直流电网故障元件的快速隔离装置，是构建直流电网的关键设备，能够大力支撑大规模新能源的高效并网和消纳。文中提出一种整流型混合式高压直流断路器电路拓扑，采用桥式换向阀组和单向开断阀组构成分断支路，与常规拓扑相比，使用一半数量的绝缘栅双极型晶体管(IGBT)即可实现电流双向开断，经济性好和可靠性高。文中详细介绍了整流型混合式高压直流断路器的拓扑结构及其开断工作原理，并提出预分闸控制策略和软合闸控制策略，以缩短分闸时间和减小合闸操作冲击。研制了一台额定电压500 kV，额定电流3 kA，最大开断电流25 kA，开断时间小于3 ms 整流型混合式高压直流断路器样机。实验结果验证了整流型混合式高压直流断路器电路拓扑的可行性和有效性

Abstract

As the fast fault isolating device of flexible high voltage direct current(HVDC)network

HVDC circuit breaker is becoming the essential device to construct the HVDC network

and can strenuously support the high-efficient large-scale renewable energy integration and consumption. In this paper

a novel commutation-based topology of hybrid HVDC circuit breaker is proposed. Compared with the existing topology

the proposed only needs half the insulated gate bipolar transistors(IGBTs)by applying H-bridge commutation modules and unidirectional breaking modules to achieve bidirectional breaking. Therefore

it is more economical and reliable. The topology and breaking principle of hybrid HVDC circuit breaker are introduced in detail

and a pre-breaking control strategy and a soft-closing control strategy are proposed to reduce the breaking time and closing-operation impact. Besides

a full-scale prototype with 500 kV rated voltage

3 kA rated current

25 kA breaking current

and less than 3 ms breaking time is developed to comprehensively test the performances of the proposed HVDC circuit breaker. The experiment results validate the feasibility and effectiveness of the proposed solution.

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