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针对湘钢三中央变电站２２０ｋＶ备用电源自投装置存在的问题，提出了新的方式和设想．分析采用新的方式后，停电时间由３．５ｓ缩短至０．０４～０．０９ｓ的可行性．同时还提出在ＳＦ６断路器的变电站，自投装置应采用的方式．
Aiming at the existing problems of 220kV backup power self-throwing device in the three central substations of Xiangtan Iron and Steel Co., Ltd., a new way and idea are put forward. After analyzing the new way, the power outage time reduced from 3.5s to 0.04 ~ 0.09s feasibility. Also proposed in SF6 circuit breaker substation, since the device should be used.