基于PSO算法的含分布式电源的配电网无功优化

Reactive Power Optimization of Distribution Network with Distributed Generation Based on PSO Algorithm

为了提高含分布式电源配电网电压质量、减少系统网损,采用了PSO算法对含分布式电源的配电网进行无功优化.以配电网有功网损最小为目标函数建立含分布式电源的配电网无功优化数学模型,以IEEE 33节点系统为算例,在接入分布式电源的情况下,对比不同类型PSO算法对节点Q13和Q29进行无功优化,通过优化前后的对比验证优化方法合理性.结果表明,利用PSO算法的优化方案能有效降低网损,在不超出电压约束范围的前提下,电压得到增强,改善了电压质量.其中,iPSO优化结果最好,收敛速度较快,且计算精度不低.

In order to improve the voltage quality of the distribution network with DG and reduce the system loss,PSO algorithm was used to optimize the reactive power of the distribution network with DG.The mathematical model of reactive power optimization of distribution network with distributed generation was established by taking the minimum active power loss of distribution network as the objective function.Taking IEEE33 node system as an example,under the condition of connecting to distributed generation,reactive power optimization of nodes Q13 and Q29 was carried out by comparing different types of PSO algorithms.The rationality of the optimization method was verified through the comparison before and after optimization.The results showed that the optimization scheme using PSO algorithm could effectively reduce the network loss,enhance the voltage and improve the voltage quality without exceeding the voltage constraint range.Among them,the iPSO optimization results were the best,the convergence speed was fast,and the calculation accuracy was not low.