Power load static spline function model

power system;  load model;  Spline functions

In order to better analyze and describe the static characteristics of the load, the idea of static power load modeling based on spline function is introduced, and the reasons for the large error of the traditional model are pointed out by analyzing the structure of the traditional model. Combined with the related theory of spline function, a load static model based on cubic spline function is proposed, and a modeling method based on spline interpolation is given. Through the simulation calculation of typical loads, it is shown that the load model can adapt to the complex load characteristic description, which provides a new and effective method for the identification of load characteristics under unknown model structure.