Conductivity Distribution in Air by Charging Process on Solid Dielectrics under DC Voltage

被引：0
|
作者：
Nakane, Ryuichi [1 ]
Kojima, Hiroki [1 ]
Okubo, Hitoshi [2 ]
Hayakawa, Naoki [1 ]
机构：
[1] Nagoya Univ, Nagoya, Aichi, Japan
[2] Aichi Inst Technol, Toyota, Japan
来源：
PROCEEDINGS OF 2020 INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATING MATERIALS (ISEIM 2020) | 2020年
关键词：
HVDC; Air-solid composite insulation systems; Charge accumulation; Partial discharge; Electric field; conductivity in air; FIELD DISTRIBUTION; HVDC; SPACER;
D O I：
暂无
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：
The enhancement of DC electrical insulation performance is required for the reliable HVDC power equipment and bulk power transmission in recent years. In this paper, we measure the charging process on PMMA in air under DC steady-state and investigate the space distribution of the conductivity in air by using needle-air-PMMA-plane electrode configuration. In order to simulate the space distribution of the conductivity in air under DC steady-state, the charge transport equations in air considering the generation, recombination and motion of positive and negative ions are solved. We calculate the space distribution of the conductivity in air activated by partial discharge. As a result, it is quantitatively estimated that highly conductive area in air with approximately 10(6) times higher conductivity than the other area is formed along the electric line of force from the needle electrode tip as the source of charge carrier.
引用
收藏
页码：494 / 497
页数：4
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