Control Strategy Of Wind-solar Complementary Power System For Island

Energy,as an important guarantee of national economic development,affects everyone’s food,clothing,living and living,and is an important material basis for every citizen.A healthy and stable power system is the basic guarantee of people’s lives.With the continuous development and progress of science and technology,new energy sources have gradually been recognized by all countries in the world.Wind power and photovoltaic power generation have been valued by all countries in the world for their cleanliness,environmental protection,and sustainability.The power grid in the form of an island refers to an independent power supply system and load system that is far from the power grid system.In real life,it is a real power grid system,such as a demonstration cell.The power supply system based on the scenery firewood storage can meet the daily life of residents in the demonstration area.This article mainly does the following work:Firstly,the basic concept and composition of the island power grid,the power tracking control method and mathematical model of the wind power generation system,the power tracking method and mathematical model of the photovoltaic power generation system,and the mathematical model of the energy storage system are introduced.The load prediction by ARMA autoregressive model and the output power of wind power generation and photovoltaic power generation by probability density are proposed.Secondly,the objective function between power generation and power consumption is established according to the law of energy conservation in the island grid,and the constraints are established by various problems and economic costs that may arise in practical application.Particle swarm algorithm is used to optimize the objective function,and the optimal output value of each system is found.Finally,the simulation platform of MATLAB is built to verify that the algorithm is real and effective.