武南变最后断路器保护装置内部逻辑分析及优化  

Analysis and optimization of interior logic for final breaker protection

作　　者：邓洁清[1] 项巍[1] 

机构地区：[1]江苏省电力试验研究院有限公司,江苏南京210036

出　　处：《电力自动化设备》2008年第7期121-123,共3页Electric Power Automation Equipment

摘　　要：武南变最后断路器保护的设计原则是:当政平至武南2条线路的武南侧4个开关全部跳开时,政平换流站需要尽快关阀,停止向武南输送功率。根据该设计原则对最后断路器动作逻辑分2个部分进行详细分析:2个开关处于分位,另外2个开关同时跳开的动作逻辑;3个开关处于分位,第4个开关跳开的动作逻辑。在分析的基础上,对最后断路器动作逻辑进行优化,提出直接将开关保护动作接点引入最后断路器保护的方案,从而使得外部回路更为简单,动作时间更为迅速。The design principle of final breaker protection for Wunan transformer substation is： when the four breakers of line 5273 and line 5274 are all tripped,Zhengping station must stop transmitting power to Wunan station as soon as possible,according to which,its logic is analyzed in two parts：two breakers are open,the other two trip at the same time;three breakers are open,the fourth trips. The logic is optimized based on the analysis and the scheme of direct connecting the action contactor of switch protection to the final breaker protection is proposed,which makes the external circuit simple and the operating time shorter.

关 键 词：最后断路器保护 断路器失灵 跳闸 

分 类 号：TM773[电气工程—电力系统及自动化]