基于实测响应空间的负荷动特性分类原理与方法

负荷特性的分类与综合是解决负荷建模中时变性难题的有效途径。于是基于随机过程相关性原理,提出了一种基于实测响应空间的负荷动特性分类方法。该方法以负荷动特性的实测响应空间为特征向量空间,对各个样本的实测响应进行时间坐标的标准化,以计算实测响应空间各样本间的相关系数,并采用系统聚类法按相关系数值进行特性分类。实测响应空间具有能够直接、准确地反映负荷构成的本质特征的优点,一工程应用实例证明了该方法正确有效,实现简便。

A New Classification Method for Aggregate Load Dynamic Characteristics Based on Field Measured Response

The classification and synthesis of load characteristics is the effective way of settling the time variance problem in aggregate load modeling. Based on the random process correlation theory, a new classifying method for load dynamic characteristics is presented. This method uses the measured response space as the character space of load dynamic characteristics. The measured response space can reflect the essential character of the composition of load directly and truly. First, the measured response of each sample is standardized in time coordination, and then the correlation coefficients of all the samples in measured response space are computed, at last, the system clustering method is used to make the characteristics classification by the value of the correlation coefficients. With a project instance, the correctness, effectiveness and convenient realization of the new method are proved.