摘要
结合我公司维护变电站的主变保护,简要分析了超高压主变保护在现场运行及检修中实际存在的几个问题:即主变断路器失灵时复合电压灵敏度问题、非电量保护应执行的反措、旁路开关代主变侧开关运行中主变差动保护存在的死区问题、整组试验容易忽视的问题、带负荷应重点检查的项目等,并针对这些主变保护现场应用存在的问题提出了一些注意事项及改进措施。
Combining maintenance of the lord transformer protection,this paper researches several problems of the EHV lord transformer protection. The problems in running, examining and repairing include compound voltage low-sensitivity while breaker of the lord transformer is malfunctioned and nonelectronic protection and lord transformers dead-zone while the bypass switch replacing the switch of lord transformer. This paper puts forward some regulations to those problems that should be noticed on the spot and countermeasures are proposed as well.
出处
《继电器》
CSCD
北大核心
2006年第2期16-19,共4页
Relay
关键词
断路器失灵
非电量保护
整组试验
带负荷检查
breaker failure
nonelectronic protection
whole experiment
onload examination
