分布式电源的配电网重构和电容器优化投切

摘要

综合考虑最优潮流、配电网重构和电容器优化投切,建立了计及分布式电源的配电网经济运行模型.鉴于模型的复杂性,采用结合最优潮流和改进蚁群算法的混合优化方法进行求解.该方法将最优潮流嵌入改进蚁群算法中,利用最优潮流求解考虑网络安全约束的分布式电源优化调度问题,利用改进蚁群算法优化配电网结构和电容器档位.为了提高蚁群算法的优化效率,建立含有局部搜索蚂蚁的混合蚁群,平衡蚁群算法的全局和局部搜索能力.通过对16节点和33节点的测试系统仿真,表明提出的模型和算法正确有效.%An economic operation model of distribution system which integrates distributed generators (DG), network configuration and capacitor switching is proposed. A hybrid algorithm using improved ant colony algorithm (IACA) combined with optimal power flow (OPF) is presented to solve this complicated model. OPF is applied to deal with security constrained economic dispatch of DC; IACA is used to optimize network configuration and capacitor switching. Hie local searching ants are adapted to improve the efficiency of ant colony algorithm (ACA). Hie hybrid population can balance local and global exploration of ACA. The numeric result verifies the correctness and validity of the proposed approach.