基于聚类分析的三阶段二级电压控制分区方法

发布时间：2018-04-26 11:15

本文选题：无功源 + 聚类分析　；参考：《电力系统自动化》2016年05期

【摘要】：合理的电压控制分区是三级或"软"三级电压控制模式应用的基础,好的分区结果应保证每个分区中都含有无功源,且分区内保持连通性。文中提出一种基于网络结构及电气距离的电压控制分区方法:首先根据网络结构将由辐射状支路连接在一起的无功源并入同一个分区;其次对受控点进行分类处理,在保证分区连通性的基础上将受控点并入电气距离最近的无功源所属分区;最后基于WARD距离对初始分区进行聚类分析,最终确定分区方案。分区聚类仅在有支路连接的相邻分区之间进行,保证了分区结果的连通性,并大大减小了分区聚类的计算量。所述分区方法仅与电网结构及参数有关,与电网的潮流分布无关,能够较好地满足二级电压控制的需要。对IEEE 39节点测试系统及实际电力系统的分区划分结果验证了所述方法的合理性及效率,对实际电力系统二级电压控制具有一定的应用价值。
[Abstract]:A reasonable voltage control partition is the basis for the application of the three-level or "soft" three-level voltage control mode. Good partition results should ensure that each partition contains reactive power sources and maintains connectivity within the partition. In this paper, a voltage control partitioning method based on network structure and electrical distance is proposed: firstly, reactive power sources connected by radiating branches are merged into the same partition according to the network structure; secondly, the controlled points are classified and processed. Based on the partition connectivity, the controlled points are merged into the nearest reactive power source partition, and the initial partition is analyzed based on the WARD distance, and the partition scheme is finally determined. The partitioning clustering is only carried out between adjacent partitions with branch connections, which ensures the connectivity of partition results and greatly reduces the computational complexity of partitioned clustering. The zoning method is only related to the structure and parameters of the power network and is independent of the power flow distribution of the power network, and can meet the needs of the two-stage voltage control. The partition results of IEEE 39-bus test system and actual power system verify the rationality and efficiency of the method, and have certain application value to the practical power system two-stage voltage control.
【作者单位】：浙江大学电气工程学院;云南电力调度控制中心;国网冀北电力有限公司电力科学研究院;
【基金】：国家科技支撑计划资助项目(2013BAA01B02)~~
【分类号】：TM921.5

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