Development and application of AC section power loss protection device

• Published in: Journal of physics. Conference series Vol. 2246; no. 1; pp. 12064 - 12070
• Main Authors: Zhang, Hongyue, Zhou, Qiang, Fan, Zhanfeng, Song, Hongtao, Liu, Zhiwen, Niu, Zhilei, Deng, Maojun, Shuai, Jiang, Li, Wenzheng, Li, Xinwen
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.04.2022
• Subjects: Arresters; Converters; Electric power supplies; Physics
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/2246/1/012064

Abstract —The so-called AC section power loss refers to the loss of all AC power supplies of the system on this side. After the AC section at the receiving end of the converter station loses power, it will lead to serious AC overvoltage, and the energy of the arrester will increase sharply at the same time, which will seriously affect the safety of the equipment. In view of this situation, this paper studies the action mechanism of AC section power loss protection, and gives the design scheme of AC section power loss protection device. The developed protection device has been verified by RTDS simulation test, passed the third-party detection test of a detection and Research Institute, and is running on site. The field operation is good. The device is not only suitable for conventional DC system and flexible DC system, but also for some occasions where regional stability needs to be considered.