THEORETICAL ANALYSIS OF CHARGE ACCUMULATION ON INSULATOR SURFACE UNDER IMPULSE VOLTAGE IN A GAS INSULATED SWITCHGEAR  

作　　者：汪沨 邱毓昌 张乔根 Kuffel E 

机构地区：[1]State Key Laboratory of Electrical Insulation for Power Equipment,Xi'an Jiaotong University [2]Department of Electrical Engineering,University of Manitoba

出　　处：《Academic Journal of Xi'an Jiaotong University》2002年第2期113-116,127,共5页西安交通大学学报（英文版）

基　　金：ThisresearchwassupportedbyMinistryofEducationforaDoctoralProgram (No .2 0 0 1 0 6980 1 4)

摘　　要：Objective To investigate the process and mechanism of insulator surface charge accumulation under impulse voltage, a dynamic equation was established for describing the relationship between surface charge density and applied voltage. Results The established equation is more generalized in comparison with that given by other previous investigators. Constants A, B for typical electrodes used in the present equation are specified. The process and mechanism of surface charge accumulation under impulse voltage are studied and the factors that influence surface charge accumulation discussed. Conclusion The present theoretical studies help to explain why surface charging can be accomplished instantly under impulse voltage, and determine the factors influencing surface charge accumulation. The findings confirmed some surface charging phenomena observed in GIS by some previous investigators.Objective To investigate the process and mechanism of insulator surface charge accumulation under impulse voltage, a dynamic equation was established for describing the relationship between surface charge density and applied voltage. Results The established equation is more generalized in comparison with that given by other previous investigators. Constants A, B for typical electrodes used in the present equation are specified. The process and mechanism of surface charge accumulation under impulse voltage are studied and the factors that influence surface charge accumulation discussed. Conclusion The present theoretical studies help to explain why surface charging can be accomplished instantly under impulse voltage, and determine the factors influencing surface charge accumulation. The findings confirmed some surface charging phenomena observed in GIS by some previous investigators.

关 键 词：INSULATOR SURFACE CHARGE IMPULSE VOLTAGE 

分 类 号：TM213[一般工业技术—材料科学与工程]