Multiterminal DC Wind Farm Collection Grid Internal Fault Analysis and Protection Design

被引:221
作者
Yang, Jin [1 ]
Fletcher, John Edward [2 ]
O'Reilly, John [1 ]
机构
[1] Univ Glasgow, Dept Elect & Elect Engn, Glasgow G12 8LT, Lanark, Scotland
[2] Univ Strathclyde, Dept Elect & Elect Engn, Glasgow G1 1XW, Lanark, Scotland
关键词
Fault overcurrent; multiterminal dc wind farm; voltage-source converter (VSC); wind power generation; OVERCURRENT PROTECTION; GENERATOR; LOCATION;
D O I
10.1109/TPWRD.2010.2044813
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The multiterminal dc wind farm is a promising topology with a voltage-source inverter (VSI) connection at the onshore grid. Voltage-source converters (VSCs) are robust to ac-side fault conditions. However, they are vulnerable to dc faults on the dc side of the converter. This paper analyzes dc faults, their transients, and the resulting protection issues. Overcurrent faults are analyzed in detail and provide an insight into protection system design. The radial wind farm topology with star or string connection is considered. The outcomes may be applicable for VSCs in the multi-VSC dc wind farm collection grid and VSC-based high-voltage direct current (HVDC) offshore transmission systems.
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页码:2308 / 2318
页数:11
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