电力系统元件模型仿真准确度评估

Assessment on Simulation Accuracy of Power System Component Models

结合规范系数法与距离法提出了一种定量判断元件模型仿真准确度的方法。该方法在评估2条曲线的相似性时既考虑了2条曲线间的距离,同时也考虑了曲线变化趋势的相似程度。城西变电站的实测数据与仿真结果表明,该方法在评估元件模型的准确度时能有效克服只考虑仿真结果与实测曲线的数值相似度,而没有考虑仿真结果与实测曲线的变化趋势相似度问题。该方法使评估仿真元件模型的准确度更加合理、全面。

By use of standard coefficient method and distance method, a method to quantitatively assess the simulation accuracy of component models is proposed. During the assessment of similarity of two curves, both the distance between the two curves and the similar extent of variation trend of the curves are considered. Simulation results and measured data of Chengxi substation show that when simulation accuracy of component model is assessed, the proposed method can effectively remedy the defect that only numerical similarity between simulation results and measured curve is considered while the similarity of variation trend of simulation results and measured curve is not taken into account. The proposed method makes the assessment on accuracy of simulation component models more reasonable and overall.