基于负荷电流的配电网状态估计研究  

Study on State Estimation of Distribution Network Based on Load Current

作　　者：宋三女[1] 钱珊珠[1] 李汉成[2] 杨明皓[3] 刘雅静[3] 

机构地区：[1]内蒙古农业大学,内蒙古自治区呼和浩特市010018 [2]北京电力公司,北京市100031 [3]中国农业大学,北京市100083

出　　处：《电力设备》2008年第4期70-73,共4页Electrical Equipment

摘　　要：基于负荷电流的配电网状态估计方法以负荷电流为状态变量,将支路测量函数用负荷电流表示,利用三相潮流计算方法得到支路电流的状态估计值,从而降低了状态估计问题的求解空间,提高了算法的收敛性和计算速度,通过将该算法与三相潮流计算法比较,结果表明状态估计算法在效果、速度、收敛性方面都较常规方法优越。State estimation method of distribution network based on load current takes load current as state variable, the branch measurement function is represented with load current, and the state estimation value of branch current can be obtained, which reduces the solution space of state estimation problem and raises the convergence of algorithm and calculation speed. Through the comparison of this algorithm and three-phase power flow algorithm, the results show that the state estimation algorithm in the aspects of effect, speed and convergence is excellent than conventional method.

关 键 词：状态估计 雅可比矩阵 负荷电流 支路电流 

分 类 号：TM744[电气工程—电力系统及自动化]