基于故障树的含电力电子变电站配电网可靠性分析

胡顺威; 周晖; 从黎; 张祥龙; 刘颖; 肖智宏; 刘海军; 曹天植

引用本文:	胡顺威,周晖,从黎,等.基于故障树的含电力电子变电站配电网可靠性分析[J].电力系统保护与控制,2018,46(21):25-31.
	HU Shunwei,ZHOU Hui,CONG Li,et al.Reliability analysis of distribution network with power electronic substation based on fault tree[J].Power System Protection and Control,2018,46(21):25-31

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基于故障树的含电力电子变电站配电网可靠性分析
胡顺威¹,周晖¹,从黎¹,张祥龙²,刘颖²,肖智宏²,刘海军³,曹天植⁴
(1.北京交通大学，北京 100044;2.国网经济技术研究院有限公司，北京 102209;3.先进输电国家重点实验室 (全球互联网能源研究院有限公司)，北京 102211;4.国网冀北电力有限公司电力科学研究院，北京 100045)

摘要:

电力电子变电站较常规变电站，除能实现变压外，还具有功率控制及灵活的AC、DC接口等功能，在配电网中得以示范应用，其供电可靠性水平如何是重点关注的问题。为此，在清楚电力电子变电站中电力电子变压器工作原理、电力电子变电站的组成、主接线的基础上，分析配电网中电力电子变电站的运行方式，采用故障树分析方法，构建了含电力电子变电站配电网的可靠性分析模型。并通过最小割集的计算，得到了该网的年故障率、年停电时间等可靠性指标。最后运用示范电力电子变电站工程项目数据分析计算，发现含电力电子变电站的配电网可靠性指标略低于常规站的配电网。

关键词: 电力电子变电站配电网可靠性分析故障树运行方式

DOI：10.7667/PSPC171625

分类号:

基金项目:国家电网公司重大科技项目(5205A016002);国家重点研发计划“先进轨道交通”重点专项(2017YFB1201000)

Reliability analysis of distribution network with power electronic substation based on fault tree

HU Shunwei¹,ZHOU Hui¹,CONG Li¹,ZHANG Xianglong²,LIU Ying²,XIAO Zhizhong²,LIU Haijun³,CAO Tianzhi⁴

(1. Beijing Jiaotong University, Beijing 100044, China;2. State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China;3. State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Co., Ltd., Beijing 102211, China;4. Electric Power Research Institute, State Grid Jibei Electric Power Company, Beijing 100045, China)

Abstract:

Compared with the conventional substation, power electronic substation can not only transform voltage, but also control power and offer power electronic AC and DC interfaces. Therefore, power electronic substation is applied to a demonstration project of distribution network. Its reliability level of power supply is a key concern. Based on the understanding of the principle of Power Electronic Transformer (PET) and the composition of power electronic substation and its main connection scheme, the operation modes of distribution network are analyzed. The reliability analysis model of power electronic substation distribution network is constructed by adopting the fault tree analysis method. The crucial reliability index, such as annual failure rate and annual failure time of the distribution network, is obtained by the minimum cut set. Finally, by means of analyzing and calculating the data collected from demonstration power electronic substation project, it is found that the reliability index of distribution network with power electronic substation is slightly lower than that of the conventional substation. This work is supported by Major Science and Technology Project of State Grid Corporation of China (No. 5205A016002) and Major Fund “Advanced Rail Traffic” of National Key Research and Development Program of China (No. 2017YFB1201000).

Key words: power electronic substation distribution network reliability analysis fault tree operation mode

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