摘要
基于串联谐振型故障限流器的等效分析模型,分别针对短路出线故障和近区故障,详细研究了限流电感及其并联杂散电容对短路电流、断路器瞬态恢复电压第一个峰值以及瞬态恢复电压上升率的影响,并综合以上指标得到了断路器苛刻度的变化规律。研究表明,选取合适的限流电感、采取合理的措施改变限流电感并联杂散电容能够有效地降低断路器的苛刻度,有利于断路器对短路故障的开断。
The equivalent model of serial-resonant fault current limiter （FCL） is presented, in which the stray capacitances are taken into account. With regards to FCL terminal fault and short-line fault in power transmission lines installed with serial-resonant FCL, the influence of current limiting inductance and its parallel stray capacitance on interrupting fault current, the first peak valve of transient recovery voltage and rate of rise of transient recovery voltage of circuit breakers are analyzed. According to these analysis, the variation of severity of high voltage circuit breakers is summarized. The simulation results present that, in practical design of a serial-resonant FCL, selecting appropriate current limiting inductance and improving its stray capacitance by some effective means will be very beneficial for successful interruption of circuit breakers to the short-circuit faults.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第18期32-37,42,共7页
Power System Protection and Control
关键词
串联谐振
故障限流器
出线故障
近区故障
断路器苛刻度
serial-resonant
fault current limiter
terminal fault
short-line fault
severity of circuit breakers
