南京理工大学学报（自然科学版）Issue(3)：335-341,7.DOI:10.14177/j.cnki.32-1397n.2015.39.03.014
基于线性回归的架空导线热路模型集总参数辨识
Lumped parameter identification of overhead line thermal circuit model based on linear regression
摘要
Abstract
To improve the accuracy of an overhead line thermal circuit model,a temperature rise ex-perimental platform of overhead lines is designed. The thermal dynamic processes of LGJ-240/30 and LGJ-400/35 with different current-carrying are measured under natural convection conditions. A linear regression method is proposed to identify the lumped parameter of the overhead line thermal circuit model. A function is established to calculate the overhead line thermal circuit model parameters by current. The identification results show that the identified values of thermal resistance are close to those of the traditional method,and decrease with the increase of current;the identified values of thermal capacity are different from those of the traditional method,and show no trend with the increase of current;the identified thermal resistance and thermal capacity are used to solve the o-verhead line thermal circuit model,and the maximum relative error of model responses is less than 1. 28%,and the accuracy of the proposed method is much better than that of the traditional method.关键词
线性回归/架空导线/热路模型/温升实验平台/热动态过程/热阻/热容Key words
linear regression/overhead line/thermal circuit model/temperature rise experimental platform/thermal dynamic processes/thermal resistance/thermal capacity分类
信息技术与安全科学引用本文复制引用
柳亚芳,应展烽,张旭东,冯凯,吴军基..基于线性回归的架空导线热路模型集总参数辨识[J].南京理工大学学报（自然科学版）,2015,(3):335-341,7.基金项目
国家自然科学基金(51405235) （51405235）
江苏省产学研联合创新资金(BY2013038) （BY2013038）
江苏省电力公司科技项目(2011LY226090424) （2011LY226090424）
连云港市产学研联合研究项目(CXY1216) （CXY1216）
