Research On Power-Load Interactive Peak Shaving Strategy For Grid-connected Wind Power

In recent years,with the emphasis on environmental issues and energy issues,the proportion of renewable energy power generation grid-connected has increased rapidly,and it has also brought more problems.Among them,the problems caused by large-scale wind power grid-connected are far-reaching.Problems such as the volatility of wind power generation and the uncertainty of power output seriously affect the safety and economy of the power grid.Using demand-side response to solve the impact of wind power grid connection on the power grid and improve wind power consumption has become an important subject of a large number of theoretical and practical studies in recent years.The thesis takes part of the northeast region as the research object,and uses the interaction of source and charge to peak load the regional power system under the background of large-scale wind power grid connection.The economy and the optimal dispatch strategy based on wind power grid-connected source-charge interactive peak shaving.Firstly,the source and load characteristics of the power system in the context of large-scale wind power grid connection are studied,and the response model of demand response load is modeled.The power supply side analyzes the output characteristics of the wind turbine and the characteristics of the wind power grid connection.In the conventional power supply,the peak shaving characteristics of the pure condensing unit are analyzed in order to carry out two-way source and load interaction for peak shaving.The demand side analyzes the characteristics of demand response resources,analyzes the characteristics of demand side resources for the load involved in demand response,and builds a peak-shaving response model of demand response loads according to their characteristics.Then,according to the analysis of the source-characteristics of the power supply side and the supply side in the source-charge interactive system in Chapter 2,the economical modeling of the peak-shaving scheduling of each source-charge interactive participation.Analyze the peak shaving costs and compensation benefits generated by each participant in the process of wind peak shaving,and establish their own cost-benefit models.The three peak shaving resources of thermal power unit depth peak shaving,electric vehicle peak shaving and high-load energy load peak shaving are placed in their respective working conditions for economic dispatch analysis,and the peak dispatch participants are dispatched through 4 working conditions.The peak shaving costs and benefits generated in the process are compared and analyzed,and some opinions are provided for the economic peak shaving interaction peak shaving.Finally,according to the calculation,analysis and suggestions in the previous article,considering the peak shaving effect,taking into account the power supply side and the load side,an optimized peak shaving model is established for the proposed source-load interactive peak shaving system,and different peak participants participate in peak shaving.The peak-shaving process is divided into three scenarios,and the example is simulated by a typical IEEE30 node,and solved by an improved particle swarm algorithm.Through comparative analysis,it is shown that the proposed optimization model can improve the system's peak shaving ability and its acceptance of wind power.Confirm the effectiveness of the peak shaving model proposed in this paper.