暂态电压稳定薄弱区域辨识的Louvain分区算法  

Louvain Partition Algorithm for Identifying Weak Region of Transient Voltage Stability

作　　者：高炜伦 武志刚[1] 苗璐 陈德扬 杨诚 GAO Weilun;WU Zhigang;MIAO Lu;CHEN Deyang;YANG Cheng(School of Electric Power Engineering,South China University of Technology,Guangzhou 510640,China;Electric Power Dispatching and Control Center,Guangdong Power Grid Corporation,Guangzhou 510600,China)

机构地区：[1]华南理工大学电力学院,广州510640 [2]广东电网有限责任公司电力调度控制中心,广州510600

出　　处：《电力系统及其自动化学报》2024年第10期99-107,共9页Proceedings of the CSU-EPSA

基　　金：南方电网公司科技项目(GDKJXM20198236)。

摘　　要：针对大电网暂态电压稳定整体研究过于复杂的问题,提出一种暂态电压稳定薄弱区域辨识方法。首先,引入节点间电气距离计算模块度,运用Louvain算法对电网进行分区;然后,考虑线路负载率与线路开断对节点电压的影响,利用熵值法构建关键线路辨识指标筛选出关键线路,将关键线路三相短路故障作为预想故障集;最后,利用基于暂态电压稳定判据构建的节点暂态电压稳定评价指标,评价出暂态电压薄弱的区域。通过广东电网仿真结果验证所提方法的有效性。Aimed at the problem that the overall study on the transient voltage stability of large power grid is too complicated,a method for identifying the weak region of transient voltage stability is proposed in this paper.Firstly,the electrical distance between nodes is introduced to calculate the modularity,and the power grid is partitioned by the Louvain algorithm.Secondly,considering the line loading ratio and the impact of line interruption on node voltage,the entropy method is used to construct key line identification indexes for selecting the key lines,and the three-phase short-circuit faults on these key lines are taken as a contingency set.Thirdly,an evaluation index for the transient voltage stability of nodes is constructed based on the transient voltage stability criteria,which is further used to evaluate the weak region of transient voltage stability.Finally,the effectiveness of the proposed method is verified through the simulation results of Guangdong Power Grid.

关 键 词：大规模海上风电 大电网分区 Louvain分区算法 关键线路辨识 暂态电压稳定薄弱区域 

分 类 号：TM744[电气工程—电力系统及自动化]