基于复杂网络理论的受端电网分层分区

Fast Voltage Control Partitioning Using Spectral Bisection Method Based on Complex Network Theory

提出了一种基于复杂网络理论的受端电网分层分区方法,采用社团网络分区中的Normal矩阵谱平分法,结合K-means聚类算法形成备选分层分区方案,保证了同层区电网内紧密的电气联系。同时,将模块度指标和无功储备校核法引入分层分区算法流程中,使备选结果满足实际电网对电气距离及电能质量的要求。另外,为了从备选方案中选取较优的分层分区方案,在建立分层分区综合评价指标体系的基础上,将灰色关联序分析法与层次分析法相结合,形成层次分析-灰色关联组合权重分析法,使电网分层分区结果更客观,更可信。采用IEEE 39节点标准测试系统对所提分层分区方法的可行性和效率进行仿真计算和验证。分析表明,该方法能够快速有效地获取合理的分层分区方案,为电网分层分区工程实践提供理论支撑。

In this paper a VGDG method,which is based on complex network theory, is proposed. This method uses normal matrix spectral bisection method in the community network partition,and the initial schemes are generated by K-means clustering algorithm, which guarantees the electrical contact of the grid in the same area. The introduction of modularity and verification of the reactive power reserve make the alternative results to meet the demand of the electric distance and power quality. On the other hand, to obtain optimal VGDG scheme,the VGDG comprehensive evaluation index system is constructed. Subjective analytical hierarchy process and objective grey relation weight are combined to make the VGDG result more objective and dependable. The feasibility and efficiency of partitioning by spectral bisection method are verified by simulation of IEEE 39-bus system. The simulation results show that a reasonable VGDG scheme can be obtained rapidly and effectively by using the proposed method, and the results of partitioning are available for reference to the VGDG engineering practice.