一次手合后加速误动的原因分析

Cause Analysing of Speeding up Wrong Action of Protection after One Hand Operated Switch

10kV采取单母分段带旁母接线形式的运城北郊变电站,某次检修开关工作结束后,结束旁带操作过程中开关启动,经分析一次系统采用该接线方式的变电站在这种运行方式下保护存在误动的可能,并可能使某些设备过负荷,在运行中应避免这种运行方式。

Yuncheng North Substation which is 10 kV that take the style of single dividing into parts and other wiring.Once,after overhauling the work of the switch,the switch had an error movement during the operating of the finishing of other wiring.After analysing,the substation that with once system take the style of this wiring can protect the error movement under the way of circulation,moreover,it can make some equipments work beyond burden,This way of circulation should be avoided when the machine is in motion.