Generation mechanism and influencing factors of transient overvoltage on ultra high-voltage direct current transmission
Year: 2025
Type: article
Abstract: 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.
Source: Frontiers in Energy Research
Authors: Weiwei Yao, Jie Zhao, Jinqiu Dou, Youhan Deng, Yushu Li, Yilin Liang, Jing Chen
Institutions: China Three Gorges Corporation (China), Wuhan University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,077
OpenAlex ID: W4407716491