中国电机工程学报2018，Vol.38Issue(5)：1301-1309,后插3,10.DOI:10.13334/j.0258-8013.pcsee.180258
电力电子变压器直流端口极间短路故障特性分析
Fault Characteristic Analysis of DC Pole-to-Pole Fault in Power Electronic Transformer
摘要
Abstract
As the significant part of energy internet, fault characteristic analysis of power electronic transformer (PET) plays an important role in the operation and protection of the grid. This paper analyzed the fault characteristics of pole-to-pole fault that occurs at the DC ports based on the structure of PET. According to fault characteristics of pole-to-pole fault, the process of fault could be divided into two stages: RLC resonance stage and inductor current freewheeling stage. The expressions of terminal voltage and short-circuit current at the DC port during two stages were deduced. Furthermore, the influence factors of fault characteristics were listed and special attentions were paid to the relationship between short-circuit current and structure and relevant parameters of PET. In the end, simulation results proved the validity of fault characteristic analysis in this paper.关键词
电力电子变压器/极间短路/故障特性/双向全桥变换器Key words
power electronic transformer/pole-to-pole fault/fault characteristic/dual active bridge分类
信息技术与安全科学引用本文复制引用
姜山,范春菊,黄宁,曾杰..电力电子变压器直流端口极间短路故障特性分析[J].中国电机工程学报,2018,38(5):1301-1309,后插3,10.基金项目
国家重点研发计划(2017YFB0903201). Project Supported by National Key Research and Development Program (2017YFB0903201). （2017YFB0903201）
