At present, the electric power system of China is under reforming and deregulating.It provides the independent power plant owners with the challenges of improving their economies. 本文紧密结合目前我国电力体制改革对独立发电厂经济性方面的要求与挑战，对火电机组运行与维修的经济性进行了比较深入的分析。
With the implement of interregional interconnection and the progress of power industry reform, power system security is playing an increasingly important part. 随着我国跨大区域联网的逐渐形成和电力体制改革的深化进行，电力系统的安全性变得越来越重要。
