摘要
600MW级及以上的机组,当装设发电机断路器或负荷开关时,可不设高压厂用备用变压器,从另一台机组的高压厂用母线引接本机组的高压停机电源,互为事故停机电源,而事故停机电源通常仅作为本机组停机检修电源,无法实现与工作电源之间的快速切换,这种接线方式对保安段切换系统提出了更高的要求。通过在保安段配置四电源切换系统,由快切装置实现保安段电源之间切换,切换方式灵活,运行安全可靠,具有一定的借鉴参考意义。
When installing generator circuit breakers or load switches,600MW and above units do not have to install standby transformer,the high-voltage shutdown power of the unit is connected to the high-voltage shutdown power from the another unit,it is usually used only as the power supply for the shutdown maintenance of the unit,unable to achieve a quick switch with the working power supply.This kind of connection puts forward higher requirements for security segment switching system.By configuring a four-power switching system in the security segment,switching between power supply is realized by fast cutting device,switching mode is flexible,operation is safe and reliable,it has certain reference significance.
作者
张钢
周亚群
谈博
牛利涛
赵俊杰
ZHANG Gang;ZHOU Yaqun;TAN Bo;NIU Litao;ZHAO Junjie(Xi’an Thermal Power Research Institute Co.,Ltd,Xi’an 710043)
出处
《电气技术》
2021年第1期63-65,共3页
Electrical Engineering
关键词
保安段
四电源
快切装置
security section
four power supply
fast cutting device
