可调权重状态估计在电网线损计算中的应用

摘要

The state estimation is used to do data preprocessing in order to eliminate the negative effects of bad data. Given the impact of the weight of measurements, the use of adjustable weight is to solve the problem that the weight’s distribution brings. First, rude measurement data is classified according to the type of measurement and inspection. Different measured levels are given different weight, so the weight given make more targeted and the shortcomings of uniform distribution of weight will be overcame. IEEE14-bus system is used to simulate the system. The results show the effectiveness of the algorithm.%利用状态估计对量测数据预处理,以消除不良数据对计算的不利影响。考虑到量测权值对估计效果的影响,采用可调权重来解决由先验权值分配不合理带来的问题。首先根据量测类型及数据粗检对量测分级,不同级别量测赋予权重方式不同,使权值赋予更有针对性,克服统一分配权值的缺陷。对IEEE14节点系统进行仿真,结果表明算法具有有效性。