基于静态电压稳定性和可再生能源消纳最大化的微电网规划

摘要

[目的]微电网中分布式电源(distribution generation,简称DG)接入位置及容量直接影响了微电网静态电压的稳定性,进而影响着可再生能源消纳问题.为了建立可再生能源消纳最大、微电网静态电压稳定、含环境效益的DG投资成本最小的微电网规划模型.[方法]采用离差法将多目标优化问题转化为单目标规划问题,利用粒子群算法求解多目标函数的最优解,利用MATLAB软件搭建典型的微电网算例系统,并进行了测试.[结果]得到了在微电网静态电压稳定性基础上,可再生能源消纳最大化的微电网的规划方案.[结论]该方案既能满足微电网建设的可靠性和经济性要求,又能解决可再生能源消纳问题.%[Objective] The access position and capacity of distribution generation (DG) in micro-grid directly affect the static voltage stability,thus affecting the renewable energy utilization problem.A multi-objective optimization model was established,this model had three advantages,which were the largest renewable energy utilization,static voltage stability of micro-grid and the minimum cost of DG investment considering environmental benefits.[Methods] In this paper,the multi-objective optimization problem was transformed into a single objective programming problem using the deviation method;the optimal solution of multi-objective function was solved by using particle swarm optimization algorithm,so as to establish the planning scheme of micro-grid.A typical example system of micro-grid was built and tested using MATLAB.[Results]Obtained a planning scheme of micro-grid with the largest renewable energy utilization on the basis of the static voltage stability.[Conclusion]The scheme can not only satisfy the economy and reliability of micro-grid but can also solve the renewable energy utilization problem.