Generation mechanism and influencing factors of transient overvoltage on ultra high-voltage direct current transmission

被引：0
作者：
Yao, Weiwei [1 ,2 ]
Zhao, Jie [1 ,3 ]
Dou, Jinqiu [1 ,3 ]
Deng, Youhan [1 ,2 ]
Li, Yushu [1 ,2 ]
Liang, Yilin [1 ,3 ]
Chen, Jing [1 ,2 ]
机构：
[1] Laboratory of Hydro-Wind-Solar Multi-Energy Control Coordination, Wuhan
[2] Science and Technology Research Institute, China Three Gorges Corporation, Beijing
[3] Hubei Engineering and Technology Research, Center for AC/DC Intelligent Distribution Network, School of Electrical Engineering and Automation, Wuhan University, Wuhan University, Wuhan
来源：
Frontiers in Energy Research | 2025年 / 13卷
关键词：
fault conditions; mechanism analysis; short-circuit ratio; transient overvoltage; UHVDC;
D O I：
10.3389/fenrg.2025.1461365
中图分类号：
学科分类号：
摘要：
The transient overvoltage caused by faults in ultra-high-voltage direct current (UHVDC) transmission lines and alternating current (AC) systems can adversely affect system safety and stability. This study theoretically analyzes the transient overvoltage generation mechanism caused by DC single-pole ground faults and typical fault conditions in two different cases by combining the DC line and AC system of the transmitting side. Considering the different generation mechanisms of the two transient overvoltages, the main factors affecting transient overvoltages were determined to be the DC line ground fault location, DC filter main capacitance, AC system short-circuit ratio, and DC transmission power. Finally, through a simulation of UHVDC transmission engineering, the relationship between various influencing factors and overvoltage was obtained, which can provide guidance in transmission engineering UHVDC design. Copyright © 2025 Yao, Zhao, Dou, Deng, Li, Liang and Chen.
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