计及等效电流量测变换及坏数据辨识的状态估计方法  

State Estimation Method Based on Equivalent Current Measurement Transformation and Bad Data Identification

作　　者：孙黎[1] 马成廉[2] 刘闯[2] 汪子翔[2] 尹波[2] 沙非[2] 

机构地区：[1]吉林化工学院信息与控制工程学院,吉林吉林132022 [2]东北电力大学电气工程学院,吉林吉林132012

出　　处：《电网与清洁能源》2009年第1期32-35,共4页Power System and Clean Energy

摘　　要：针对输电系统和配电系统量测类型多样性及传统状态估计算法的不足,讨论并发展了一种基于等效电流量测变换的状态估计及坏数据检测与辨识方法。该方法是通过对量测系统的实际量测进行等效电流量测变换,并根据误差传播理论改变相应的量测权值而推导出来的,其不仅保留了传统状态估计算法的快速解耦特性,并在无任何假设的情况下实现了雅可比矩阵的完全常数化。算例分析表明,该方法快速有效,并能有效地处理不良数据,能较好地应用于输电系统和配电系统的状态估计计算。A new state estimation（SE） method for bad data detection and identification based on equivalent current measurement transformation is presented and discussed against the variety of measurement categories in power transmission and distribution system and the shortcomings of traditional SE in this paper. This method is derived from the equivalent current measurement transformation of practical measurements from the measuring system and changing corresponding weight coefficient of measurement according to the theory of error propagation. In the presented method not only the fast decoupling characteristic of traditional SE algorithm is retained, but also Jacobian matrix constant completely is implemented without any assumption. The analysis on the results of calculation example shows that this method is fast and effective. This method can effectively deal with the bad data, and it can be applied to the SE calculation for distribution and power transmission systems.

关 键 词：电力系统 状态估计 等效电流量测变换 坏数据 检测与辨识 

分 类 号：TM744[电气工程—电力系统及自动化]