A Surface Discharge Model for Partial Discharges Under DC Stress

被引：4
|
作者：
Cambareri, Pasquale [1 ,2 ]
Montanari, Giancarlo [2 ]
机构：
[1] Politecn Milan, Dipartimento Elettron Informaz & Bioingn, I-20133 Milan, Italy
[2] Florida State Univ, Ctr Adv Power Syst, Tallahassee, FL 32306 USA
来源：
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN INDUSTRIAL ELECTRONICS | 2024年 / 5卷 / 03期
关键词：
Electric fields; Mathematical models; Surface discharges; Insulation; Voltage; Conductivity; Electrodes; Dc voltage supply; electrified transportation; partial discharge inception field and voltage; reliability; surface partial discharges;
D O I：
10.1109/JESTIE.2023.3299836
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
With the trend in industrial electronics towards higher voltage levels and power densities stimulated by the clean-energy transition and electrified transportation, the design of surface insulation systems must face the challenge of coping with the increasing risk of faster insulation degradation rate caused, in particular, by inception of extrinsic aging mechanisms as partial discharges. This demands for models that can help insulation designers to evaluate the likelihood of inception of such extrinsic aging acceleration phenomena. This article deals with a new model for the estimation of surface partial discharge inception in dc insulation systems. The model is validated experimentally by tests on insulating materials used in electrified transportation electrical assets. Peculiar characteristics of the model, namely the electric field transient duration under dc voltage supply and the impact of temperature and surface conductivity on partial discharge inception voltage are also discussed.
引用
收藏
页码：1314 / 1321
页数：8
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