基于支路带节点功率估计的配网状态估计实用算法  

BRANCH-ESTIMATION-BASED STATE ESTIMATION PRACTICAL ALGORITHM WITH NODE POWER ESTIMATION FOR DISTRIBUTION SYSTEMS

作　　者：杨成龙[1] 高晓萍[1] 

机构地区：[1]东南大学电气工程系,南京210096

出　　处：《电力系统及其自动化学报》2003年第3期37-41,共5页Proceedings of the CSU-EPSA

摘　　要：本文充分利用配电网的辐射性特点 ,采用基于单支路 WLS估计的前推 /回代估计方法对配电网进行状态估计 ,该方法在前推的逐支路估计过程中 ,对有后续支路的支路估计前有条件地加入末端节点功率估计 ,并通过分析提出一定原则对权值进行合理选取。对算例和实际辐射网的计算结果表明该方法收敛快速、估计精度高且编程简单 ,算法可靠、有效。Fully considering the radial nature of distribution system,this paper deals with state estimation of distribution system by a branch-estimation-based algorithm in which single-branch WLS state estimation is implemented for each branch in forward sweep process from the branches in the last layer to the branch connected to the root node and the nodal voltages are calculated in backward sweep process opposite to forward process.Especially,in forward process,single-branch estimation is conditionally preceded by the end-node power estimation introduced in the paper for each branch except those whose end node is not connected to any other branch.How to choose the weight of each measurement is also discussed in the paper.Test results of a practical and a theoretic system indicate the proposed method is valid,feasible and efficient.

关 键 词：配电网 输电网 状态估计 实用算法 功率估计 电力系统 管理系统 

分 类 号：TM73[电气工程—电力系统及自动化] TM744