高电压技术2017，Vol.43Issue(12)：4096-4102,7.DOI:10.13336/j.1003-6520.hve.20161223001
特高压混合无功补偿线路断路器失步故障开断特性
Out-of-phase Fault Interruption Characteristics of Circuit Breakers in UHV Transmission Line with Hybrid Reactive Compensation
摘要
Abstract
With the extension of UHV transmission lines,hybrid reactive compensation will be widely used in the future.On the basis of the introduction of key components and the structure of hybrid reactive compensation,we analyzed the characteristics of circuit breakerby simulation when the out-of-phase fault occurs in the UHV transmission lines with hybrid reactive compensation.With regard to the worst condition of the out-of-phase fault,the variation rules of the out-of-phase fault current and transient recovery voltage of circuit breakers were obtained.Using an equivalent lumped parameter circuit,the computational formula of the out-of-phase fault current and transient recovery voltage rising rate were deduced and computed.The relationship between the out-of-phase fault current and hybrid reactive compensation was presented,and out-of-step fault current would increase nonlinearly with the increase of compensation degree of series compensation.Based on the above method,the variation rules of the out-of-phase fault current and transient recovery voltage in UHV transmission line were studied in the presence and absence of hybrid reactive compensation.The results show that the peak value of transient recovery voltage and its rising rate increases exponentially with the increase of the compensation degree of series compensation in the hybrid reactive compensation.However,the change of the controllable high compensation degree has little effect on the peak value and the rise rate of the transient recovery voltage.In view of the out-of-phase fault interruption characteristics,the research results provide an analysis foundation and theoretical basis for parameter optimization of the hybrid reactive compensation and arrangement selection of circuit breaker in UHV transmission line.关键词
特高压/混合无功补偿/断路器/失步故障电流/瞬态恢复电压Key words
UHV/hybrid reactive compensation/breaker/out-of-phase fault circuit/transient recovery voltage引用本文复制引用
李清泉,李斌,刘洪顺,韩明明,杨臻..特高压混合无功补偿线路断路器失步故障开断特性[J].高电压技术,2017,43(12):4096-4102,7.基金项目
国家自然科学基金(51507095) （51507095）
山东省优秀中青年科学家科研奖励基金(BS2015NJ01) （BS2015NJ01）
中国博士后科学基金(2015M572031).Project supported by National Natural Science Foundation of China(51507095),Research Fund for Excellent Young and Middle-aged Scientists of Shandong Province(BS2015NJ01),China Postdoctoral Science Foundation(2015M572031). （2015M572031）
