Economic Operation Of Hydropower Station Applied Research

Economic operation of hydropower plant is one of basic methods to strengthen operation management of hydropower plant and improve profit. It is an important part of economic operation of power system, which is usually divided into three parts by time or space: internal economic operation of hydropower plant, short-term economic operation of hydropower plant, long-term economic operation of hydropower plant. This paper clarifies firstly the research background and current situation of the world of economic operation of hydropower plant and introduces simply the models of three ways of economic operation. It provides basic model, data and necessary reference for economic operation of hydropower plant under supervisory control, including:(1) The treatment of model synthetic characteristics curve of turbine. It provides basic data for economic operation of hydropower plant under supervisory control. It includes principally treatment of efficiency curve and treatment of equal opening curve. The method of polar coordinates is used to treat the efficiency curve by means of CAD, and resultant data tables are obtained. Compared with the method of straight coordinates and neural networks method, it has the profit that less work and higher precision. It is known that, when the water head is definite, the relationship between turbine opening and discharge is sure. So the equal opening curve is treated and resultant function tables between opening and discharge are obtained. And it provides one way to control the turbine discharge for the operation of hydropower plant.(2) Power water volume dispatching for the second time in ten days combining together reservoir operation. Reservoir operation gives the water volume in ten days, which is dispatched and expected to obtain more energy output. The paper advances the model of dispatching and the solving process by means of genetic algorithm. The second dispatching is a sub-system of economic operation of hydropower plant under supervisory control and combines together reservoir operation with internal economic operation of hydropower plant.(3) Luhun reservoir power plant is taken as an example. model synthetic characteristics curve of turbines are treated and resultant database is got. It is introduced that the model of internal economic operation of hydropower plant and solving method. Combining together the reservoir operation, the power water volume in ten days is dispatched for the second time. With supervisory control theory, the economic operation system of hydropower plant under supervisory control is got.