基于自适应负荷调整网络矩阵的配电网重构

A Network Reconfiguration Method Based on Adaptive Load Regulation Matrix

避免重构中生成不可行解是解决配电网快速重构问题的关键。现有方法往往只考虑拓扑结构而未考虑节点负荷的波动,没有规避重构中生成大量劣解,即满足拓扑约束但适应度值很高的解,重构计算耗时依然较长且存在搜索不到最优解或次优解的可能。针对上述缺陷,提出一种基于自适应负荷调整网络矩阵的配电网重构方法。在基本环矩阵的基础上,根据各节点实时负荷的大小,通过计算功率矩并进行支路组校验生成自适应负荷调整网络矩阵,排除了大量劣解,缩小了可行解范围,提升了可行解空间的质量,不仅加快了重构速度,而且更容易搜索到最优解。针对重构模型对烟花算法的爆炸算子、变异算子、选择策略进行改进,使之能快速收敛,并采用改进烟花算法进行求解。通过对33节点系统和119节点系统分别进行降损重构和故障后重构的算例仿真,验证了所提方法的有效性。

The key of network reconfiguration for distribution systems is avoiding infeasible solutions. The existing reconfiguration methods have the disadvantages of long optimization time and low global optimization rate, and fail to avoid a large number of inferior solutions in solution space. Therefore, this paper proposes a network reconfiguration method based on adaptive load regulation matrix. The adaptive load regulation matrix, which could remove plenty of inferior solutions and improve the quality of feasible solution space, is generated by calculating the power moment and checking the branch group according to the basic ring matrix. The explosion operator, mutation operator and selection strategy are improved for the reconfiguration model, and the improved fireworks algorithm is used. Simulations of loss reduction reconfiguration and fault reconfiguration on 33-node system and 119-node system verify the proposed method.