摘要
从国家电网公司企业标准Q/GDW 175—2008《变压器、高压并联电抗器和母线保护及辅助装置标准化设计规范》入手,结合不同型号母差保护母联失灵动作逻辑框图分析,对母联失灵保护电流判据、启动原理、保护配合、定值设置等相关问题进行了比较研究,发现了早期版本保护的局限性及后期母联失灵保护正确可靠投入需注意的配合问题,进而规范和指导母联失灵保护正确可靠投入。
According to the enterprise standard of State Grid Q/GDW 175—2008 Standardization Design Specification for Power Transformer, High Voltage Shunt Reactor, Busbar Protection and Auxiliary Equipments, this paper combined with the analysis on failure action logic diagram of different types of busbar differential protection, some issues including the current criterion, startup principle,protection coordination and fixed value setting of bus coupler malfunction protection are studied. The limitations of the protection in the early stage are pointed out and the correct and reliable protection actions are found out.
出处
《山西电力》
2016年第3期33-36,共4页
Shanxi Electric Power
关键词
母联失灵保护
失灵判据
失灵启动回路
bus coupler malfunction protection
failure criterion
failure protection start circuit
