标题：A Network Partition Approach for Distributed Three-phase State Estimation of Active Distribution Networks
作者：Yuan, Peiran; Zhang, Wen; Chen, Jian
作者机构：[Yuan, Peiran; Zhang, Wen; Chen, Jian] Shandong Univ, Sch Elect Engn, Minist Educ, Key Lab Power Syst Intelligent Dispatch & Control, Jinan, Shandong, 更多
会议名称：IEEE-Power-and-Energy-Society General Meeting (PESGM)
会议日期：AUG 05-10, 2018
来源：2018 IEEE POWER & ENERGY SOCIETY GENERAL MEETING (PESGM)
关键词：data exchange; distributed state estimation; network partition; PMU;; topological analysis
摘要：With the expanding scale and three-phase unbalance problem of active distribution networks (ADNs), traditional centralized state estimation (CSE) cannot meet the requirements of real-time analysis and control of distribution systems. This paper presents a network partition approach based on topology analysis algorithm for distributed three-phase state estimation (SE) of ADNs. Branch-line layer method and postorder-traversal algorithm are used to perform partition approach which considers radial topology structure and PMU configuration of distribution system. After network partition and decoupling, the local SE is performed based on weighted least squares (WLS) method in each decoupled region and data exchange is performed among adjacent regions to improve DSE accuracy. The distributed state estimation (DSE) has a better performance in accuracy and efficiency than CSE, which is tested in IEEE 33-bus and IEEE 123-bus distribution systems.