Study & Application On Optimal Power Generation Expansion Planning

Energy Resource is the base of human society exiting and development. During the past 200 years, the energy structure based on the fossil fuel, driven the development of humane society dramatically. However, accompanying with the improvement of mankind living level, the environment pollution, has become a serious problem, because of the large-scale use of fossil fuel. The sustainable development of Energy sector has become the urgent problem, faced by mankind in the present and future. Electricity is both the production and consumption of Energy in our country. The rational planning of power generation will play the important role in the sustainable energy development of Energy sector in our country.Aiming at the serious energy situation and problems of power generation planning of China, study in the essay is carried out for the optimal generation expansion planning of "Under the guidance of sustainable development energy structure, giving priority to utility and distributed energy system is complementary". The mainly work is as following:Study on the sustainable development energy consumption structure. To forecast the future energy structure and contaminations emission, the Markov forecasting model of energy structure and the contaminations emission model are established. The range of energy consumption structure adjustment is calculated to achieve the Chinese economy, environment and energy saving objects. By considering the resource cost and environmental cost in the energy utilization, the marginal cost model of energy supply is established. Many types of energy supply marginal cost are calculated, and their competitive capacity for sustainable development is analyzed.The structure of power generation resource composed of big unites and big grid is studied. The costs of power supply for different units, including the environmental costs, are calculated under the actual contaminations emission control regulations. Based on the actual power supply costs, the optimization model of power structure is established is established to determine the rational capacities for different power units.The site selection of coal-fired plants is optimized. By considering the influence of site selection on utility grid, environment and acceptance of local society, the integrated indexes system including the performances of economy, safety,environment and society is established in this paper. The total site region is divided into many successive units by using the visible function of GIS. The feasible units are determined and calculated according to the feasible indexes of site selection. In the end, the optimal site selection is completed by establishing the models of fuzzy recognition for each unit.The optimal configuration of distributed energy system is studied. The feature of distributed energy system is analyzed. The economy of distributed energy system is evaluated. By considering the factors, including economy, reliability, environment protection, and CO2 emission, the fuzzy integrated evaluation models is built up. The energy supply mode is optimized from integrated energy utilization. The mode of distributed power generation embedded to power grid (EDG) is analyzed. By analyzing the annual power supply cost of EDG and power grid, the economic utilization and cost-benefit analysis model of controllable EDG system are established in this paper. The distributed energy resource is configured optimally connecting to utility grid.