基于最优路径的电网状态计算与不良数据辨识

Power Grid State Calculation and Outlier Detection Based on Optimal Path-Finding Technique

电网状态计算与不良数据辨识,能为电力系统运行分析提供准确可靠的数据系统,是电网安全稳定控制的基础。提出了一种考虑不同量测精度和量测方向的网络搜索新方法,选择量测组合精度更高的最优路径进行状态计算。利用电压一致性检测、PMU/SCADA一致性检测、KCL一致性检测和KVL一致性检测方法,实现不良数据辨识。IEEE 14节点系统算例结果表明,最优路径法具有较高的计算精度,且能正确辨识不良数据。

State calculation and outlier detection can provide reliable data for power grid security and stability control,so they are extremely important for power system.This paper presented a new state calculation method based on the optimal path-finding network search technique by selecting calculation paths considering redundancy,accuracy and direction.This paper used the voltage consistency check,the PMU/SCADA consistency check,the KCL consistency check and the KVL consistency check to realize the outlier detection.Examples on IEEE 14 bus system show that this method has a high accuracy in state calculation and outlier detection in power system.