Optimization Theory Of Power Grid Enterprises'Power Purchasing And Sales And Development Of Its Decision Support System

As the world's electric power industry development trend, the reform of the electricity market led the electricity enterprises to pay more attention to the economic and social benefits generated by electrical trade, considering the premise of safe operation of power grid. As the socialist market economy continued to be refined, China's power market-oriented reform basically realized "Power Network and Plants Separation", the price is a link between power plants and grid companies, grid companies and the users, which becomes the relationship between the seller and the buyer. Each grid companies has the dual identity of the buyer and the seller. They also are actively taking on the state's political empowerment and social responsibility; at the same time they must strive for enterprise development and implementation to maximize enterprise value. As the power grid company, on both buyers and sellers identity, how to maximize the economic benefits and social duty, and study power purchasing and sales system considering their own conditions and environment overall analysis and optimization, in order to develop and implement the right purchasing and sales strategy, has an important theoretical significance and application prospects. Based on the above viewpoints, through an in-depth analysis on power purchase and sale market at home and abroad, this paper gives a comprehensive analysis and research on the problems of purchasing and sale of electricity in china.Firstly, electricity purchasing optimization theory and model of power Grid Company is studied. Basing on the current electricity market rules and the future development trend, combined with the power market construction program, according to the electricity market stage of development, electricity purchasing optimization theoretical model of power grid companies are set up at two stages of current and future electricity market. Then, electricity sales optimization theoretical model of power grid companies is studied and two sets of impact of the income at the two conditions of a shortage supply and exceeding demand are set up, and electricity sales optimization model of the two conditions are established using analytic hierarchy process to empower the index. Secondly, the purchasing and sales electricity analysis model of power grid companies is studied in the next.The common analysis theory and method are compared and used in the electricity purchasing and sales analysis of power grid companies. The factor analysis model of electricity purchasing and sales is separately set up using derivative factor substitution principle, in order to provide guidance in the future electricity purchasing and sales decision-making. Then empirical analysis which selects a grid company having Hydropower and Thermal power of power grid companies'electricity purchasing and sales optimization and analysis is conducted in the paper. The data of electricity purchasing and sales of the company are collected, and the front optimization and analysis model are calculated, the rationality and feasibility of the model is verified, and in accordance with the results of the calculation, the electricity purchasing and sales decision-making suggestion of the company is given.Finally, in accordance with the previous theoretical model and method, combined with actual situation of the electricity purchasing and sales work, using computer information technology, the support decision-making support system goal of electricity purchasing and sales optimization and analysis is analyzed, the function of the system modules are designed. What's more, the entire system development of support decision-making of electricity purchasing and sales optimization and analysis are completed.