中文摘要：

电网分区可以降低短路电流，便于对电网的管理调度，提高电网运行的安全性。提出了一种结合负荷电流场和聚类分析的分区方法，首先通过负荷电流场确定分区数和聚类中心节点；然后由雅可比矩阵导出的电气距离对求出的聚类中心节点进行网络节点聚类分析，不需复杂的迭代过程就能将电网分为几个内部联系紧密的规模合适的分区，求解过程简单有效；最后以有功网损为优化目标对各相邻分区的边界节点重新划分，实现电网优化分区。IEEE39节点系统算例和某地区电网的实际应用结果验证了所提方法的可行性和实用性。

英文摘要：

Power networks partitioning operation can reduce short circuit current, which is convenient for the management of power grid dispatching and improves the safety of power grid operation. A partitioning method combined with load current field and cluster analysis is proposed in this paper. Firstly,the partition number and cluster center node are determined by load current field. Then,based on the electrical distance derived from Jacobi matrix,the network clustering analysis is completed. With the simplified process of cluster analysis,the power networks is divided into several internal strongly connected zones in a proper scale without complicated iteration procedure. Finally,the approach of redistricting boundary nodes of each adjacent partition optimizes the active power loss. The experiments on IEEE39-bus system and a regional power networks verifies the feasibility and practicability of illustrated method.