电工技术学报  2021, Vol. 36 Issue (zk1): 231-240    DOI: 10.19595/j.cnki.1000-6753.tces.L90003
电力电子 |
基于综合能源系统的固态变压器中开关器件故障特性分析与诊断
桑子夏1, 郑旭1, 方仍存2, 杨东俊1, 杜治2
1.国网湖北省电力有限公司经济技术研究院 武汉 430077;
2.国家电网公司水火电资源优化配置与仿真技术实验室 武汉 430077
Fault Characteristics and Diagnosis Strategy Analysis of Power Switch Failures on Solid State Transformer in Integrated Energy System
Sang Zixia1, Zheng Xu1, Fang Rengcun2, Yang Dongjun1, Du Zhi2
1. State Grid Hubei Economic Research Institute Wuhan 430077 China;
2. State Grid Laboratory for Hydro-Thermal Power Resources Optimal Allocation & Simulation Technology Wuhan 430077 China;
全文: PDF (5217 KB)   HTML
输出: BibTeX | EndNote (RIS)      
摘要 综合能源系统是主动配电网实现能量综合管理的重要手段与工具,其可靠性与该系统中大量应用的固态变压器的可靠性直接相关。该文针对配电网固态变压器的输入级、中间级和输出级中开关器件开路故障和短路故障开展研究,并对其故障后电压和电流畸变进行分析。以配电网固态变压器中由级联多电平变换器组成的输入级、中间级和输出级的基本工作原理及运行方式为基础,研究了其开关器件在各个故障下电压和电流的畸变,并总结其故障机理和故障特性,通过建立特定波形畸变和故障点位置与类型之间的关系,辨识开关器件故障的位置与种类。最后通过仿真对故障特性进行了验证,并提出了基于故障机理和故障特性的开关器件故障诊断方法。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
桑子夏
郑旭
方仍存
杨东俊
杜治
关键词 综合能源系统固态变压器级联多电平变换器开路故障短路故障故障特性    
Abstract:As the integrated energy system can realize the integrated energy management for active distribution network, its reliability is highly related to the widely applied solid state transformer (SST) which are based on cascaded H-bridge converters. This paper presents research on the voltage and current distortion in the high voltage stage, isolation stage and low voltage stage of SST after the open-circuit and short-circuit faults of its power switches. The operational principles and the control methods for high voltage stage, isolation stage and low voltage stage of SST are introduced. Based on conclusions derived from the performance analysis of SST after the faults, this paper comes up with the effects from its topology design and control scheme on the current and voltage distortion. According to the SST fault characteristics, the abnormality of relevant components heavily depend on the location of the faulty switch, hence it is possible to locate the position of the faulty switch. Finally, the fault characteristics peculiar to SST are analyzed, and further discussed with simulation on the Saber platform, as well as a fault location diagnosis algorithm.
Key wordsIntegrated energy system    solid state transformer (SST)    cascaded multi-level converter    open-circuit fault    short-circuit fault    fault characteristics   
收稿日期: 2020-02-02     
PACS: TM921.52  
基金资助:北省电力有限公司科技资助项目(52153820000H)
通讯作者: 子夏 男,1984年生,博士,研究方向为电力电子在电力系统中的应用。E-mail: spadegadget@hotmail.com   
作者简介: 郑 旭 男,1980年生,博士,研究方向为电力系统及其自动化。E-mail: 20688068@qq.com
引用本文:   
桑子夏, 郑旭, 方仍存, 杨东俊, 杜治. 基于综合能源系统的固态变压器中开关器件故障特性分析与诊断[J]. 电工技术学报, 2021, 36(zk1): 231-240. Sang Zixia, Zheng Xu, Fang Rengcun, Yang Dongjun, Du Zhi. Fault Characteristics and Diagnosis Strategy Analysis of Power Switch Failures on Solid State Transformer in Integrated Energy System. Transactions of China Electrotechnical Society, 2021, 36(zk1): 231-240.
链接本文:  
https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.L90003          https://dgjsxb.ces-transaction.com/CN/Y2021/V36/Izk1/231