Research On Optimal Dispatching Of Wind Power-pumped Storage Combined Power Generation System

As a clean,renewable,and low-cost power generation method,wind power has attracted people’s attention.At the same time,it also has the shortcomings of high intermittent and high randomness,especially when it is connected to the grid on a large scale.The stability of the power grid has an adverse effect.In response to this problem,this article combines wind power and pumped storage to form a wind power-pumped storage combined power generation system.Using the characteristics of pumped-storage turbines in pumped-storage power plants,when wind power is sufficient,the electricity generated by wind generators is used to feed the system.For power supply,the surplus electric energy is converted into water energy by the pump-turbine working in the pump mode and stored;when the wind power is insufficient,the lack of electric energy in the system is supplied by the pump-turbine working in the water turbine mode.This guarantees the amount of air curtailment.In the smallest case,energy is used to the maximum,which can alleviate the current energy shortage and bring greater economic benefits to people.Second,improve the stability of the power system after wind power is connected..When establishing the mathematical model,the working principle and actual working conditions of the wind turbine and water pump turbine are combined.The performance and mathematical models of the main components of the system include:the form,structural composition,performance indicators of the wind turbine,the relationship between wind speed and the output power of the wind turbine,the power model of the wind power generation,etc.;the type of pumped storage power station,Composition,structure and characteristics of reversible pump turbine.The dynamic simulation model and operation strategy of wind power-pumped storage combined power generation system.The dynamic performance of the system is analyzed in detail,the dynamic simulation model is established,and the operation strategy is studied.The dynamic performance of the main components of the system includes: the relationship between the parameters of the wind turbine,the characteristics of the pump working conditions and the hydraulic turbine working conditions of the pumped storage unit,etc.The established dynamic simulation models include: wind energy models,mathematical models of wind turbine output power and power generation,and calculation models for power generation and pumping of pumped storage power plants.On this basis,a simulation module was established,including a simulation module for the output power and power generation of the wind turbine.The output characteristics of wind power generation are studied.Based on the comparison of its characteristics and load characteristics,as well as the dynamic characteristics and mathematical models of various parts of the system,a simulation module of the wind power-pumped storage combined power generation system is established.When scheduling optimization of wind power-pumped storage combined power generation system,the objective function is set to maximize the economic benefits of the system.The innovation lies in the dynamic adjustment of individual parameters in the traditional immune particle swarm algorithm and the use of improved immune particles The group algorithm is used to solve the system,and Simlink is used to simulate the model,and compare and analyze the three dimensions of the joint daily economic benefit,the convergence speed when solving,and the power station benefit.The results show that the improved immune particle swarm optimization algorithm has certain practical significance in three aspects: reducing the wind power-pumped storage combined system,reducing the amount of air curtailment,increasing the calculation speed,and improving the economic benefits of the combined system.