混合型主备式固态切换开关电压跌落强迫切换策略研究  

Study on the Control Strategy of Voltage Sag Forced Switching of Hybrid Type Primary and Standby Solid-State Switch

作　　者：孙浩[1] 钱江[2] 张伟[1] 李鹏 燕翚 付永生 

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074 [2]国网山西省电力公司运城供电公司,山西运城044000 [3]中电普瑞科技有限公司,北京102200

出　　处：《电器与能效管理技术》2016年第16期26-30,65,共6页Electrical & Energy Management Technology

摘　　要：从电网拓扑结构相互影响的角度出发,在强迫切换方式下研究了混合型主备式固态切换开关(SSTS)在10 k V中性点不接地和经Z型变压器接地双电源系统中,切换阻感性负荷对负荷的影响。针对阻感性负荷,分析了切换前后负荷特性,以及是否适用于强迫切换策略。试验验证了所采用的策略在缩短切换过程的基础上,减小了切换过程对负荷的影响。Starting from the perspective of interaction between the types of topology of state grid, the hybrid type primaiy and standby solid-state switch in the forced switching mode was studied, including the effect of load in 10 kV neutral point non grounded and grounded through Z type transformer dual power supply system by switching resistive and inductive load. The characteristics of resistive and inductive load before and after switching were analyzed, and whether it is suitable for forced switching strateg}^. The test proves that on the basis of shortening the switching process,the influence of the switching process on the load is reduced.

关 键 词：固态切换开关 电压跌落 强迫切换 负荷特性分析 

分 类 号：TM564.8[电气工程—电器]