Application of Excitation Function to the Prediction of RI Level Caused by Corona Discharge

作     者：ZHU Lingyu JI Shengchang HUI Sisi GUO Jun LI Yansong FU Chenzhao 

作者机构：The State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an 710049 China Shanxi Electric Power Corporation Taiyuan 030001 China Electric Power Research Institute SMEPC Shanghai 200437 China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2012年第14卷第12期

页      面：1091-1096页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by National High Technology Research and Development Program of China (No. 2008AA04Z408) 

主　　题：radio interference excitation function modal propagation Ground-Return impedance 

摘      要：Radio interference （RI）, as an aftereffect of corona discharge, is an important research topic in the field of electromagnetic compatibility, where excitation function is applied broadly to the prediction of RI level. This paper presents the theory of excitation function method used in the RI level prediction. Then, some practical problems related to this method are discussed. The propagation procedure of corona current is solved by the phase-modal transformation, and the impedance matrix of multi transmission lines is calculated by a double logarithmic approximate model of Carson＇s Ground-Return impedance. At the same time, in order to calculate the RI level when total line corona is assumed, an analytical formula is deduced for integral operation. Based on the above solutions, an algorithm is presented and applied to the prediction of RI level of a practical overhead transmission line. Comparison of prediction and measurement results indicates that the algorithm proposed in this paper is effective and feasible.