Development of the Forecast Technology of Electrical Breakdown in Gas Insulated Switchgear

气体绝缘开关设备电气击穿预测技术的进展

• 批准号: 61550212
• 负责人: HOSOKAWA Tatsuzo
• 金额: $ 1.28万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61550212/
• 关键词: Gas discharge; Breakdown; アーク放電; 気体の絶縁破壊; 気体放電; ガス絶縁電力機器の絶縁破壊; 電力機器の絶縁破壊予知

This research by using the model apparatus,was carried out on technology development with foreseeing breakdoen of SF_6 gas insulated switchgear.In the following are obtained salient results.(1) The generation at the small discharge between the contact portions of the gas circuit breaker reduces the main breakdown voltage between the contact portion and the container so that the small dischage plays an important role for the reduction of the main break-down voltage.(2) The rate of reduction of the main breakdown voltage varies with the magnitude of the small dischage current and the distance between the contact portion and the container. Generally speaking,the rate increases as the distance decreases and the discharge currents increase.(3) On the breakdown generated by small discharge,the electrical phase of the main break-down between the contact portion and the container,was clarified as follows: Contact portion shows negative polarity and the container shows positive polarity.From the above experimental results.It was clarified that the latter examination of the small discharge on the contact portion enabled us to foresee the main breakdown of the Gas insulated switchgear.

利用该模型装置，对SF_6气体绝缘开关设备的断路器技术开发进行了研究，取得了显著的成果。(1)在气体断路器的接触部分之间产生的小放电降低了接触部分和容器之间的主击穿电压，使得小放电对于降低主击穿电压起重要作用。(2)主击穿电压的降低率随小放电电流的大小和接触部分与容器之间的距离而变化。一般来说，随着距离的减小和放电电流的增加，速率增加。(3)关于小放电产生的击穿，在接触部分和容器之间的主要击穿的电气相位被澄清如下：接触部分显示负极性，容器显示正极性。从上述实验结果可以澄清，接触部分上的小放电的后一检查使我们能够预见气体绝缘开关设备的主要击穿。

项目成果

Yukimitsu Kawada: J.Appl.Phys.63. (1988)

川田幸光：J.Appl.Phys.63。

Yoshihisa Sekiya: "Characteristics of Electric Discharge in a Positive Point to Plane Gap with High Speed Air Flow." Trans.IEE of Japan. 106-A. 541-548 (1986)

Yoshihisa Sekiya：“高速气流下正点到平面间隙的放电特性。”

Mirko Cernak: "Initial stages of Negative Point-Plane Breakdoen in Argon." Jpn.J.Appl.Phys.27. 155-156 (1988)

Mirko Cernak：“氩气中负点平面突破的初始阶段。”

関谷昌久: 電気学会論文誌. 107-A. 312-318 (1987)

Masahisa Sekiya：日本电气工程师学会汇刊 107-A。1987 年。

Yoshihisa Sekiya: "Characteristics of Electric Discharge in a Negative Point to Plane Gap with High Speed Air Flow." 107-A. 312-318 (1987)

Yoshihisa Sekiya：“高速气流下负点到平面间隙的放电特性。”