Multiterminal DC Wind Farm Collection Grid Internal Fault Analysis and Protection Design
Multiterminal DC Wind Farm Collection Grid Internal Fault Analysis and Protection Design
复制标题
DOI：
10.1109/tpwrd.2010.2044813
复制
发表时间：
2010-04
影响因子：
4.4
通讯作者：
Jin Yang;John E. Fletcher;J. O'Reilly
中科院分区：
文献类型：
--
作者：
Jin Yang;John E. Fletcher;J. O'Reilly
多终端直流风电场是一种很有前途的拓扑结构，在陆上电网上使用电压源逆变器（VSI）连接。电压源变换器（VSCs）对交流侧故障条件具有鲁棒性。但是，它们容易受到变换器直流侧直流故障的影响。本文分析了直流故障及其暂态，以及由此产生的保护问题。详细分析了过流故障，为保护系统的设计提供了参考。考虑了星形或串形连接的径向风电场拓扑结构。研究结果可能适用于多vsc直流风电场集输网中的vsc和基于vsc的高压直流（HVDC）海上输电系统。
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.