基于BAS算法的配电网无功优化
2021-06-28董煜王小会李晓青
董煜 王小会 李晓青



摘 要:配电网无功优化是保证其经济安全运行的重要措施。针对配电网无功优化问题,文章提出基于天牛须搜索算法的配电网无功优化策略,同时,引入自适应变化的步长因子改善BAS算法的迭代速度。最后,在Matlab中引入IEEE33节点配电网系统对基于粒子群算法、天牛须搜索算法和改进天牛须搜索算法的无功优化策略进行仿真验证并做对比分析,仿真结果表明,基于改进天牛须搜索算法的无功优化策略性能更优。
关键词:配电网;无功优化;粒子群算法;天牛须搜索算法
中图分类号:TM761+.1;TP18 文献标识码:A 文章编号:2096-4706(2021)01-0055-03
Reactive Power Optimization of Distribution Network Based on BAS Algorithm
DONG Yu,WANG Xiaohui,LI Xiaoqing
(Lanzhou Institute of Technology,Lanzhou 730050,China)
Abstract:Reactive power optimization of the distribution network is an important measure to ensure its economic and safe operation. In view of the reactive power optimization problem of distribution network,a reactive power optimization strategy based on the beetle antennae search algorithm is proposed in this paper. At the same time,it introduces an adaptively changing step size factor to improve the iteration speed of the BAS algorithm. Finally,the IEEE33-node distribution network system is introduced in Matlab to simulate and verify the reactive power optimization strategy based on the particle swarm optimization algorithm,the beetle antennae search algorithm,and the improved beetle antennae search algorithm. The simulation results show that the performance of the reactive power optimization strategy based on the improved beetle antennae search algorithm is better.
Keywords:distribution network;reactive power optimization;particle swarm optimization algorithm;beetle antennae search algorithm
0 引 言
配电网是电力系统的关键组成部分,能够对电能进行分配。电力系统不仅要求能够稳定可靠的运行,还要降低能源的损耗,提高系统的经济性。电网无功优化就是对其无功潮流进行优化,改善其分布,达到提高节点电压水平,降低运行损耗的目的,从而保证整个系统安全、可靠、经济的运行[1]。配电网无功优化问题是一个多变量、多约束的非线性规划问题,求解过程十分复杂[2]。电力系统最优潮流的概念和模型在20世纪60年代被提出后,国内外研究人员便对此展开了大量的研究。目前,求解无功优化问题的方法有两种类型:一是数学算法。胡骅等人根据双层优化理论建立了以准入功率最大化为上层优化目标、满足电压约束为下层优化目标的计算模型[3]。程军照等人在预测-校正内点法基础上加入了直角坐标系进一步优化了无功优化计算模型[4]。……
