Research On Operational Optimization Methods In Integrated Systems Of Power Generation Distribution And Sales Containing Distributed Generation

Under the new situation of the large-scale development of distributed generation and the deepening integration with the electric power system reform,the extensive development and promotion of distributed generation and the efficient adjustment of the energy structure will be the focus of the development and research of the energy industry worldwide in the future.With the large-scale development and application of distributed generation,lots of problems brought by it have gradually emerged.In order to solve the coordination problem between distributed generation and the main network,an integrated system of generation,distribution and sales came into being.Aiming at the overall economics of the integrated distribution system,it has become a research hotspot in this field to propose an optimization method for the integrated distribution system operation.This paper mainly studies the operation optimization method and strategy of the integrated systems of power generation distribution and sales under the development of scale.The main research content includes:First,analyze the various economic costs involved in the integrated systems of power generation distribution and sales,distribution network,etc.The quantification of environmental governance costs is included in the economic goals,based on the fact that each distributed generation and the entire system has its own actual operating range,considering the supply and demand side electric power balance,the output of each distributed generation,and the charging and discharging state of energy storage Establish a multi-objective comprehensive cost economic model of the integrated systems of power generation distribution and sales.Secondly,comprehensively consider the controllable distributed power sources such as gas turbines,fuel cells and uncontrollable distributed generation such as wind power generation and photovoltaic power generation in the entire system.The operating status and performance of energy storage devices and other mechanical equipment,and the mathematical output models of various distributed power sources are given.Then,through the analysis and comparison of the pros and cons of the various solution algorithms in the research status at home and abroad,the particle swarm algorithm has the advantages of fast convergence speed and strong optimization ability to determine it as a method for solving system operation optimization.The optimization and improvement of the group algorithm make it more suitable for system solving,taking into account the cost of power generation and environmental governance,and using the comprehensive cost economic model as the objective function to continuously update the output power of the distributed power sources in each time period to find the optimal output scheme of the best economic operation to achieves the goal of global optimization in the system.Finally,through a example,simulation analysis is performed based on different climate backgrounds and load differences,and different scenarios are set to carry out comparison based on the comprehensive objective function under different power generation economic costs and environmental governance cost weight combinations.The optimized output results of distributed generation verified the rationality and effectiveness of the established model and solution method.As a bridge connecting traditional power system and intelligent grid,Through the research of its operation optimization,it can provide a theoretical basis for the large-scale development of distributed generation,and help the enterprises under the national new power reform policy to operate the integrated business of distribution and distribution in the market environment,and clarify the development direction.