传统电压控制区域(Voltage Control Area，VCA)划分中，先进行负荷节点分区，后利用灵敏度方法实现人工PV节点归并的过程较为繁复，为此提出了一种包含无功源节点的快速VCA划分方法。首先，该方法通过节点类型转变的思想，在传统负荷节点的灵敏度矩阵中加入无功源节点的灵敏度元素，从而构建全维灵敏度矩阵；其次，在考虑雅可比子矩阵中功率和电压弱耦合关系的基础上，对传统灵敏度矩阵结构进行修改，更准确的体现了节点之间电气联系的紧密程度，增强了分区结果的合理性；最后，通过凝聚的层次聚类方法得到了包含无功源节点的全网分区结果。文中所提新方法简化了分区的计算步骤，在实现无功源节点与负荷节点同步分区的同时优化了传统PV节点的归并过程。通过对IEEE9节点、IEEE39节点系统的仿真实验，佐证了所提分区方法的有效性。
英文摘要:
The conventional method on partitioning voltage control area (VCA) partitioned the load nodes then utilized the power sensitivity, which was considered more complicated. A fast VCA partitioned method was developed to simplify the conventional method. Firstly, the proposed method, guided by nodes-converted idea, introduced the reactive power parameters to the original sensitivity matrix to establish a full dimensional sensitivity matrix. Next, the original sensitivity matrix was modified, considering the weak coupling relationship of reactive power and voltage in the Jacobian Submatrix, to optimize the multiple processes of cluster and power flow regulation, which accurately reflected the compact linkage among nodes and increased the rationality of the partition method. Finally, the VCA-partitioned results were obtained by using an agglomerative hierarchical clustering algorithm. The new method simplified the clustering and calculating steps, partitioned the reactive power nodes and load nodes synchronously, and optimized the power voltage (PV) nodes–merged process. The proposed method was verified by simulating in the IEEE9-nodes system and the IEEE39-nodes system, and the results demonstrated that the proposed method was efficient in partitioning.
