Post Arc Current in Vacuum DC Interruption with Forced Current Zero Method

被引：0
|
作者：
Zhang Y. [1 ]
Qin T. [2 ]
Liu Z. [3 ]
机构：
[1] College of Information Science and Technology, Nanjing Forestry University, Nanjing
[2] National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing
[3] School of Automation, Nanjing University of Science and Technology, Nanjing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2021年 / 36卷 / 02期
关键词：
Commutation capacitor voltage; Commutation frequency; DC interruption; Forced current zero; Post arc current;
D O I：
10.19595/j.cnki.1000-6753.tces.191673
中图分类号：
学科分类号：
摘要：
In order to investigate the post arc current in DC interruption, the high speed hybrid actuator was designed and the post arc current measuring system was established. Then, experiments were carried out to study the influence on the post arc current, including the amplitude of rated current, electrode gap, commutation frequency and commutation capacitor voltage. The results indicate that post arc current is instable within a certain range. The post arc current increases with the increase of the electrode gap, and is nearly unchanged at the same gap. When the rated breaking current is less than 800A, the post arc current has a high rising rate, while the rising rate of the post arc current decreases when the rated breaking current is in the range of 800~1 800A. The post arc current increases obviously with the increase of the commutation frequency, which determines the amplitude of the post arc current. In addition, the commutation capacitor voltage should also be controlled to reduce the post arc current. © 2021, Electrical Technology Press Co. Ltd. All right reserved.
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页码：417 / 424
页数：7
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