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自适应限流型固态断路器的直流电源设计
作者:
作者单位:

智能电网教育部重点实验室(天津大学),天津市 300072

摘要:

为消除常规限流电抗对直流系统运行稳定性和直流断路器断流速度的不利影响,桥式限流型固态断路器实现了兼具自适应故障限流与断流的优异性能,但其桥电路中的直流偏置电源存在无过流保护和电源容量与投资成本相对较高的缺陷。针对桥式限流型固态断路器,文中设计了一种基于三相半波整流电路的直流偏置电源,提出了偏置电源参数选取和电压整定方法,有效减少了电力电子器件数量,实现了偏置电源过流保护电路,降低了偏置电源设计容量和制造成本。样机实验和仿真算例证明了所提出的自适应限流型固态断路器的偏置电源的优势。

关键词:

基金项目:

国家自然科学基金委员会-国家电网公司智能电网联合基金资助项目(U1866205);已申请国家发明专利(申请号:201910228173.1)。

通信作者:

作者简介:

李斌(1976—),男,博士,教授,博士生导师,主要研究方向:电力系统保护与控制。E-mail:libin_tju@126.com
王晨阳(1994—),男,通信作者,硕士研究生,主要研究方向:电力系统保护与控制。E-mail:tju_wangchenyang@126.com
何佳伟(1991—),男,博士,主要研究方向:电力系统保护与控制。E-mail:hejiawei_tju@126.com


Design of DC Power Supply for Self-adaptive Current-limiting Solid-state Circuit Breaker
Author:
Affiliation:

Key Laboratory of the Ministry of Education on Smart Power Grids (Tianjin University), Tianjin 300072, China

Abstract:

In order to eliminate the adverse effects of conventional current-limiting reactance on the operation stability of DC system and the breaking speed of DC circuit breaker, the bridge-type current-limiting solid-state circuit breaker has achieved excellent performance of both self-adaptive fault current limiting and breaking. However, the DC bias power supply in the bridge circuit has the shortcomings of no overcurrent protection, relatively high power capacity and high investment cost. For the bridge-type current-limiting solid-state circuit breaker, this paper designs a DC bias power supply based on three-phase half-wave rectifier circuit. The method of selecting the parameters of bias power supply and setting the voltage is put forward, which effectively reduces the number of power electronic devices, realizes the over-current protection circuit of bias power supply, and reduces the designed capacity and cost of bias power supply. The prototype experiment and simulation examples verify the advantages of the proposed bias power supply of self-adaptive current-limiting solid-state circuit breaker.

Keywords:

Foundation:
This work is supported by National Natural Science Foundation of China-State Grid Joint Fund for Smart Grid (No. U1866205).
引用本文
[1]李斌,王晨阳,何佳伟,等.自适应限流型固态断路器的直流电源设计[J].电力系统自动化,2020,44(5):30-37. DOI:10.7500/AEPS20190418012.
LI Bin, WANG Chenyang, HE Jiawei, et al. Design of DC Power Supply for Self-adaptive Current-limiting Solid-state Circuit Breaker[J]. Automation of Electric Power Systems, 2020, 44(5):30-37. DOI:10.7500/AEPS20190418012.
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  • 收稿日期:2019-04-18
  • 最后修改日期:2019-08-30
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  • 在线发布日期: 2020-03-08
  • 出版日期:
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