共 7 条
Reliability evaluation of modular multilevel converter based on Markov model
被引：0
|作者：
Liang ZHANG
[1
,2
]
Dan ZHANG
[3
]
Ting HUA
[1
]
Jihong ZHU
[2
]
Gang CHEN
[4
]
Tongzhen WEI
[5
]
Ting YANG
[1
]
机构：
[1] School of Power Electric Engineering, Nanjing Institute of Technology
[2] State Key Laboratory of Intelligent Technology and Systems,Tsinghua University
[3] School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University
[4] State Grid Jiangsu Electric Power Company Xuzhou Power Supply Company
[5] Institute of Electrical Engineering, Chinese Academy of
关键词：
Modular multilevel converters;
Reliability evaluation;
Markov model;
D O I：
暂无
中图分类号：
TM46 [变流器];
TM732 [电力系统的运行];
学科分类号：
摘要：
The modular multilevel converter(MMC) is now the most attractive topology for medium and high voltage power conversion applications with several advantages over the traditional voltage source converter(VSC). However, due to a large number of sub-modules(SMs) in the MMC, system reliability is a big challenge in its practical application, where each SM may be considered as a potential point of failure. In this paper, a reliability evaluation based on the Markov model is proposed for the MMC. The failure rates of the power electronic devices and SMs are firstly analyzed. Then, the Markov model and the state transition equation of the system are built in detail.A general reliability evaluation function is established, in which the mean time to failure and reliability evaluation of the MMC with redundant SMs are also discussed. Finally, a practical direct current(DC) distribution example for reliability evaluation is analyzed, and the results verify that the reliability evaluation based on the Markov model could provide a useful reference for project design.
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页码：1355 / 1363
页数：9
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