机组启停导致损水的最优策略研究

Study of optimization srategy in the water-loss condition caused by starting and stopping of generator

在水电站制定厂内机组最优负荷分配时一般都假设水电站的水头是不变的。然而,实际运行中,由于机组耗水等各种原因都会导致水头产生比较大的变化,这就要求优化分配原则要能满足水头变化的要求。利用网络图权值法和动态规划法,对这种情况进行分析研究。最后得出两种最优负荷分配的方法并给出了这两种方法的优缺点对比讨论,具有一定的普遍意义。

In the process of making optimal load dispatch plan in hydroelectric plants, it is usually supposed that the water head of the hydroelectric plant is not changing. However, during the practical operation, because of many respects, such as the water loss caused by generators, the water head always changes greatly. Consequently the optimal load dispatch plan should meet this kind of change. This paper focused on the study of new optimal load dispatch plan in such complicated condition. With network weight method and dynamic programming, two optimal schemes are proposed and tested. In the end, advantages and disadvantages of the two schemes are discussed. It is generally applicable in practical engineering program.