Problems and faults emerged during operation of the 25MW steam-turbine generators of Laiwu Steel were analyzed. Through optimization upgrading of the electric-con-trolled oil station, design and installation of upper and lower oil tanks and lubricants cooler, the generating unit operates more safely and stably, solving various problems such as instabil-ity of speed adjustment system, load fluctuations, over-standard oil temperature, clogging of electro-hydraulic converter and unreliable lubrication system and achieving good economic and social benefits.%分析了莱钢25 MW汽轮发电机在运行中暴露出的设备问题和缺陷，通过对电控油站改造、高低位油箱设计安装和润滑油冷油器改造等系统优化提升，机组运行更加安全稳定，解决了调速系统部稳定、负荷波动大、油温超标、电液转换器堵塞和润滑系统不可靠的问题，取得了较好的经济和社会效益。
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