Study On Mode And Price Mechanism Of Low-carbon Generation Dispatch

The development of generation dispatch mode is relevant to the power technology advancement, reforming for power industry, as well as increasing resources and environmental constrains. In recent years, with the acceleration of global warming, the frequency and intensity of extreme weather events increased, control greenhouse gas emissions has become the general consensus of the world. The power industry, as the key industries of fossil energy consumption and CO2emissions, its traditional run mode that only considering fossil energy conservation and emission reduction of SO2and NOX, can not adapt to the new situation, need to establish a new generation dispatch mode.Based on the analyze the background and realistic goals of low-carbon generation dispatch, this paper intended to provide a comprehensive and in-depth analysis of the implementation mode and its support conditions of low-carbon generation dispatch. First, research on the implementation mode of low-carbon generation dispatch including the internal and across province were studied with the target of energy-saving and carbon-reducing. Second, research on the price mechanism of low-carbon generation dispatch and optimal capacity of wind power and pumped-storage power station in order to promote and safeguard the smooth implementation of low-carbon generation dispatch. The research work has made the following key results:Comprehensively considering the unit commitment, economical load allocation, a low-carbon generation dispatching model was established. Then, in order to calculate external costs of carbon emissions, considering the emission reduction constraints, this paper established a quantitative model with the objective of minimization the cost of power generation, a specific examples was given to prove the validity of this model.With the target of expanding the potential of energy conservation and emission reduction and promoting the optimal allocation of regional resources, two regional generation right trading mode was proposed, layered optimization mode between regional and provincial networks, and integrated optimization mode with interest constraints in regional networks. Considering the bidding strategies of the main players in the generation right trade, this paper established a market equilibrium model of generation right trade, and apply this model for the simulation analysis of the operating results of the two possible modes, example analysis shows that integrated optimization mode can maximize benefit of energy-saving and carbon-reducing and meet the interest constraints.Optimize capacity of wind power and pumped-storage power station in power system can promote the development of wind power and provide the material basis for low-carbon generation dispatch. Considering the operating characteristics of pumped-storage power station, this paper established the low-carbon generation dispatching model in PS integrated systems. Based on this model, this paper established a capacity optimization model of wind power and pumped-storage power station using maximize the social benefits as objective function. example analysis shows that this model can promote the development of wind power and improve the social benfits of power systems.Design reasonable price mechanism is the fundamental way to control the imbalance between power companies in low-carbon generation dispatch mode. Based on the price theory and practical experience, this paper proposed time-of-use price and two-part price as the possible price mechanism for low-carbon generation dispatch mode, and establish the corresponding pricing model. The simple case show that two-part price can slove the imbalance problem and achieve the unity of minimum the power purchase costs and minimum the cost of energy consumption and carbon emissions. Then, this paper focus on the optimal design of capacity pricing mode. The effectiveness of the capacity price mode based on reliability pricing model was verified by using the system dynamics model which is established in this paper. In this price mode, the government as a regulator need to entrust the grid company to forecast the capacity needed, to inspire the grid company to improve the accuracy of system capacity demand forecast, a mechanism of the capacity price regulation based on principal-agent theory is designed, and examples are given finally to verify its correctness.