基于支路带节点功率估计的配网状态估计实用算法  

A PRACTICAL STATE ESTIMATION ALGORITHM FOR DISTRIBUTION NETWORK BASED ON BRANCH WITH NODE POWER ESTIMATION

作　　者：杨成龙[1] 高晓萍[1] 

机构地区：[1]东南大学电气工程系,江苏省南京市210096

出　　处：《电网技术》2003年第10期87-91,共5页Power System Technology

摘　　要：充分利用配电网的辐射形特点,提出了采用基于单支路加权最小二乘估计(WLS)的前推/回代估计方法,该方法在前推的逐支路估计过程中,对有后续支路的支路在支路估计前有条件地加入末端节点功率估计,文中还提出了对权值进行合理选取的原则。对算例和实际辐射网的计算结果表明,该方法收敛速度快,估计精度高,编程简单,算法可靠、有效、实用。Fully considering the radial property of distribution system, a forward/backward sweep estimation algorithm based on weighted least square (WLS) is presented. For this algorithm in the forward sweep process of branch-by-branch estimation, before the branch with follow-up branches is estimated, the end-node power estimation is conditionally added. Thorough analysis of the principle of reasonably selecting the weighted values is put forward. The results from calculation examples and practical radial distribution networks show that the presented algorithm possesses the following advantages: high convergence speed, easy to program, high estimation accuracy and is reliable and effective.

关 键 词：配电网 状态估计 实用算法 节点功率估计 可靠性 最小二乘估计 电力系统 

分 类 号：TM732[电气工程—电力系统及自动化]