Flexible Fusion Arc Suppression Method for Large Generator Stator Ground Fault

被引：0

作者：

Huang, Junjie ^{[1
,2
]}

Guo, Moufa ^{[1
,2
]}

Zhang, Binlong ^{[1
,2
]}

机构：

[1] College of Electrical Engineering and Automation, Fuzhou University, Fujian Province, Fuzhou

[2] Fujian Province University Engineering Research Center of Smart Distribution Grid Equipment (Fuzhou University), Fujian Province, Fuzhou

来源：

Dianwang Jishu/Power System Technology | 2024年 / 48卷 / 11期

关键词：

current arc suppression; flexible arc suppression; fusion arc suppression; large generator; stator ground fault; voltage arc suppression;

D O I：

10.13335/j.1000-3673.pst.2023.1834

中图分类号：

学科分类号：

摘要：

A single-phase ground fault in the stator of a large generator may produce an arc, causing core burnout or even serious accidents such as fire. A flexible fusion arc suppression method is proposed to achieve ground fault current suppression and reliable arc suppression by controlling the neutral point voltage and the converter injection current in parallel. The existing flexible arc suppression method for generator stator single-phase ground fault has a poor arc suppression effect under low or high resistance conditions. The proposed method considers the stator impedance of the generator and the number of stator parallel branches. It applies to different generators and can quickly suppress the ground fault currents to a safe range under different ground fault transition resistances, different fault locations, and so on. The effectiveness of the proposed method is verified by Matlab/Simulink. © 2024 Power System Technology Press. All rights reserved.

引用

页码：4748 / 4757

页数：9