电力系统保护与控制Issue(8)：21-27,7.
风电场短路电压电流频率不一致对距离保护及测试的影响
Short circuit current and voltage frequency inconsistency in wind farm and its effect on distance protection and relay protection test
摘要
Abstract
Firstly, based on the equal circuit of power grid with doubly fed induction generators (DFIG), the paper studies the frequency components of short circuit voltage and current in the place where the protection devices are equipped with. And the analyzing result leads to different frequency characteristics of voltage and current for wind farms during faults. Secondly, simulations based on Matlab/Simulink verifies the particular characteristics and yields the relationship between transition fault impedance and the characteristics of short-circuit voltage and current. Following the frequency’s feature of short circuit current, the reliability and adaptability of distance protection are analyzed. Finally, simulation results verify the adaptive failings of this traditional protection in wind farms, and the results also have some certain instructional significance to relay protection test. This work is supported by Science and Technology Project of State Grid Corporation of China (No. 52100113058M) and National High-tech R & D Program of China (863 Program) (No. 2012AA050203).关键词
风电场/双馈风机/距离保护/频率不一致Key words
wind farm/doubly fed induction generators (DFIG)/distance protection/frequency inconsistency分类
信息技术与安全科学引用本文复制引用
卜强生,高磊,宋亮亮,宋爽,陈宁,高丙团..风电场短路电压电流频率不一致对距离保护及测试的影响[J].电力系统保护与控制,2015,(8):21-27,7.基金项目
国家电网科技项目（52100113058M）；国家高技术研究发展计划(863计划)(2012AA050203) （863计划）
