Analysis And Research On Reactive Power Optimization Of Distribution Network With Wind Power Based On Ant Lion Optimization Algorithm

Wind energy is widely used because it is clean,renewable and widely distributed.Wind power,as a distributed power source,is integrated into the power grid,which can make full use of wind energy resources to some extent and relieve local power shortage.However,due to the uncontrollability and variability of wind power,a large number of wind power connected to the grid will change the original system structure,change the power distribution,increase the network loss,and affect the quality of grid voltage.Therefore,it is very important to study the reactive power optimization of distribution network with wind power supply.This thesis first analyzes the development of wind power at home and abroad,as well as the wind power grid after the emergence of a number of problems,and the distribution network with wind power optimization methods are studied.According to the research results,a distribution network model with doubly-fed wind turbines is established in this paper,and the power flow calculation process is determined by the method of backward and forward generation.The optimization calculation of the distribution network is carried out by improving the Ant-lion optimization algorithm.Containing wind power distribution network reactive power optimization problem is to solve highly complex nonlinear problems,the mixed discrete variables and continuous variables,doodlebug optimization algorithm has less adjustable parameters,and the characteristics of high precision as the main algorithm in this paper,considering the algorithm convergence speed is slow,poor robustness problem,to improve the doodlebug optimization algorithm;A single objective reactive power optimization model with minimum node voltage offset and a multi-objective reactive power optimization model with minimum node voltage offset and minimum reactive power compensation capacity are established.Finally,a simulation test is carried out on the IEEE 33-node system.Through the analysis of the simulation results,the effectiveness of the improved Ant-lion optimization algorithm and model mentioned in this paper is confirmed,which can achieve the purpose of reducing voltage deviation and network loss.