摘要
在建立饱和铁心型高温超导故障限流器(saturated iron-core type high temperature superconductive fault current limiters,SR-SFCL)电磁暂态仿真计算模型基础上,对电网发生短路故障后SR-SFCL一次绕组与励磁绕组的电流、电压过渡过程进行了定量计算,深入研究了一次绕组与励磁绕组电流、电压的特征和相互关系,分析了限流器对短路电流交流分量初始值、冲击电流和稳态短路电流的限制效果。研究指出:SR-SFCL对稳态短路电流具有很好的限制作用,充分发挥限流效果的关键是缩短励磁回路的灭磁时间,灭磁时间与一次电流、灭磁电阻取值等因素关系密切。
On the basis of establishing electromagnetic transient simulation model of saturated iron-core type high temperature superconductive fault current limiters （SR-SFCL）,the post-short-circuit transient process is quantitatively calculated,and the features of voltages and currents of primary winding and excitation winding and their interrelation are researched in depth; the limiting effects of SR-SFCL on initial value of AC component of short current,impact current and steady state short-circuit current are analyzed.Research results show that SR-SFCL can well limit the steady state short-circuit current; the key factor to fully play the role of SR-SFCL is to shorten the de-excitation time of excitation circuit,and the de-excitation time is closely related to such factors as primary current,the value of field-suppressing resistor and so on.
出处
《电网技术》
EI
CSCD
北大核心
2014年第6期1562-1568,共7页
Power System Technology
基金
国家电网公司基础性前瞻性科技项目(XT71-13-008)
关键词
饱和铁心型高温超导限流器
电磁暂态
灭磁时间
短路电流
saturated iron-core type high temperature superconductive fault current limiters （SR-SFCL）
electromagnetic transient
de-excitation time
short-circuit current
