综合负荷特性的数理统计判别

Synthesis Load Characteristics Criterion Method Based on Mathematical Statistics

随着电网综合变电站的数目的日益增加,电网必须动态调整综合变电站的负荷特性分类结果。针对不断新增和变化的变电站的负荷特征数据,提出了基于数理统计的综合负荷特性多总体距离判别法,该方法以马氏距离作为多总体距离判别依据,以误判率来检验判别结果的准确性。通过某电网已知的实际变电站负荷特性,对待判别的变电站进行总体距离判别,得出了准确的判别结果,论证了所提方法的有效性。

With the number of synthesis substations growing, power system must dynamically adjust the sub- station classification result of load characteristics. The multi-distance criterion method of synthesis load char- acteristics based on mathematical statistics is presented in the paper for the new and changing load characteris- tics data of substations . The method is based on the Ma--distance, ,and can improve the accuracy by testing misjudgment rate. Through a example of actual grid substation load characteristics, the accurate results can be obtained which use the multi--distance criterion to judge the substation, and the effectiveness of the method is demonstrated.