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四月初,我处一级电站1号机发生连续两次非同期合闸事故,致使电站10kV出线罗田116线末端C相断裂,所幸的是没有造成越级跳闸事故。 1 事故经过 电站在经每年度的检修后准备开机并网,值班员按正常操作程序建压,手动准同期合上1号发电机油开关的瞬间,发电机差动保护动作。经短时检查分析后,再次并网,差动再次动作,同时光字牌显示“10kV线路单
In early April, I happened at the No. 1 unit of a power plant in two consecutive non-simultaneous closing accidents, resulting in the power station 10kV Luotian 116 line C-phase fracture, but fortunately did not cause more tripping accidents. 1 Accident After the power station after the annual maintenance and preparation for power on and grid, on duty according to the normal operating procedures built pressure, manual quasi-synchronic closure of the 1st generator oil switch, the generator differential protection action. After a short inspection and analysis, once again grid, differential again action, while the light plate shows "10kV line