Subject：Analysis several 110KV, 220KV DC power loss accidents and their crucial results, gives three technical resolutions, such as integrated protection calculation,
increased protection configuration, etc. According? to several power network practices, gives various emergency protection resolutions for the loss of DC power supply, especially prevents the problem expansion and resolves equipments burnt problem. These resolutions guarantee power system safety running, protect main equipments crashing, maximum improve the stability of power supplying systems.???? Key Words: DC Power Loss? Relay Protection Emergency? Technology?

摘要：通過(guò)對(duì)幾個(gè)110KV站、220KV變電站直流電源消失引發(fā)嚴(yán)重事故的剖析，針對(duì)直流電源消失帶來(lái)的惡性后果，從保護(hù)整定計(jì)算、新增保護(hù)配置等不同方面，分別提出三種技術(shù)應(yīng)對(duì)措施，針對(duì)不同的電網(wǎng)實(shí)際情況，從而有效解決直流電源消失引發(fā)的嚴(yán)重后果，特別是解決因故障不能及時(shí)切除而造成事故范圍擴(kuò)大和設(shè)備燒損問(wèn)題，這樣對(duì)電力系統(tǒng)安全穩(wěn)定運(yùn)行，提高供電可靠性有著十分重要的現(xiàn)實(shí)意義。

關(guān)鍵詞：直流電源消失繼電保護(hù)應(yīng)急技術(shù)措施