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上次冬季检修时,检修人员因粗心大意,误将发电机励磁变压器电缆线接错,造成励磁变压器烧坏.1 事故现象当天晚上,3发电机进行试机运行,21时带负荷1500kW.23时左右,电气值班员闻到一股异味,赶紧跑到高压室,室内已浓烟弥漫.当即停机检查发现,3发电机励磁变压器上有大量的油冒出且伴有气味,器身温度很高.采取措施冷却后,用摇表摇测其直流电阻正常.吊芯检查除变压器油变色外,无其它异常现象.更换变压器油,干燥处理后,装好待查.
The last winter overhaul, maintenance personnel due to carelessness, mistakenly connect the generator excitation transformer cable wrong, resulting in excitation transformer burnout .1 accident phenomenon that day, 3 generators running test machine, 21:00 load 1500kW.23 At about the time, the electrical attendant smelled a smell, and quickly ran to the pressure chamber, indoors has been filled with smoke immediately shutdown inspection found that 3 generator excitation transformer with a large amount of oil is emitted and accompanied by smell, body temperature is very After taking measures to cool down, shake the table to measure its DC resistance normal .Charm inspection in addition to transformer oil discoloration, no other anomalies .Replace transformer oil, after drying, well installed.