利用新型快速断路器提升电能质量的研究  

Study on the application of new type fast circuit breaker in improving power quality

作　　者：罗海荣 LUO Hairong(Power Research Institute of State Grid Ningxia Electric Power Co. ,Ltd. ,Yinchuan Ningxia 750011,China)

机构地区：[1]国网宁夏电力有限公司电力科学研究院

出　　处：《宁夏电力》2019年第3期65-70,共6页Ningxia Electric Power

摘　　要：随着微电子器件与电力电子技术的飞速发展,用户对电能质量的要求越来越高。和传统的断路器相比,新型快速断路器采用了更高水平的灭弧技术,提升了机械动作性能,动作时间明显缩短,从接受跳闸命令到出口动作切除故障只需要大概20 ms的时间。通过PSCAD仿真软件,在母线处分别对单相接地故障、两相接地故障等情况进行了仿真分析,验证了采用新型快速断路器技术,能够有效减小故障处电压跌落时间、故障恢复时间、三相电压不平衡等现象,提升了电力系统的电能质量。With the fast development of microelectronic devices and power electronics technology,the customers have higher and higher demands for the power quality. Comparing with the traditional circuit breaker,the new type fast circuit breaker adopts advanced arc extinguishing technology,the mechanical operation performance is improved and the action time is obviously shorten,it takes 20 ms to eliminate the faults from receiving trip order to outlet action. By the PSCAD simulation software,single-phase ground fault and two-phase ground fault on the bus were separately simulated and analyzed. The results verify the use of new type fast circuit breaker can effectively reduce the voltage drop time,faults recovery time,three-phase voltage unbalance at the faults and improve the power quality of the power system.

关 键 词：快速断路器 灭弧技术 电能质量 

分 类 号：TM561[电气工程—电器]