Chaotic Optimal Operation of Hydropower Station with Ecology Consideration (Report‪)‬

1. Introduction The optimal operation of hydropower station can increase the hydropower market competitive ability and realize the optimization of resources. How to manage and utilize the present hydropower station and to obtain the more comprehensive benefits in the case of maintain the extra investment, which have important significance on the development of our national economy and society and solve the problem of the energy shortage in short time. Investigation into the hydropower station optimal operation arises from the 1940s, in 1946, Masse the first introduced the concept of optimization into hydropower station optimal operation. American scholar Little [1] propose a random model of reservoir optimal operation which random variable is the runoff. Now, many scholars carried out earlier reservoir optimal operation of research and application [2-5]. At present hydropower station reservoir operation have more research on optimization algorithm and reached many great results. Many arithmetic have been applied to hydropower station reservoir optimal operation [6-13], such as dynamic programming, decomposition-coodination method of large systems, fuzzy mathematics, genetic algorithm, artificial neural network, particle swarm optimization algorithm, ant colony optimization algorithm. With the continuous development of theory and method for reservoir optimal operation and in-depth development of electricity market reform, the study of hydropower station reservoir optimal operation is a hotspot research within a period of time in the future. In addition, with the development of people's knowledge about the ecological environment, some scholars become to concern the ecology for optimal operation of hydropower station [14,15]. But most studies of the existing reservoir are also rarely considered the ecological water requirements of the river downstream and the reservoir itself. Although the models and algorithms have made considerable progress, but most of the models and the algorithms have bad universality, and is often for the specific reservoir conditions and operating characteristics which develop the specific model and algorithm. In this paper, based on the predecessors, under the conditions of researching the electricity market, reasonable consider the ecological water requirements, the chaotic optimal operation model based on time-varying electricity price is established, chaotic genetic arithmetic(CGA) is exploited to solve the model, the study has a certain reference practice value for optimal operation of hydropower station.