Open AccessStudy on overvoltage of hybrid LCC‐VSC‐HVDC transmission
Author(s) -
Xu Dizhen,
Zhao Xiaobin,
Lu Yuxin,
Qin Kang,
Guo Long
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8729
Subject(s) - overvoltage , hvdc converter station , transformer , electrical engineering , voltage source , power transmission , transmission system , engineering , electric power transmission , modular design , surge arrester , electric power system , transmission line , fault (geology) , commutation , voltage , electronic engineering , transmission (telecommunications) , power (physics) , computer science , physics , quantum mechanics , seismology , geology , operating system
Hybrid line commutation converter‐voltage‐source converter high‐voltage direct current transmission (LCC‐VSC‐HVDC) power transmission has unique technical advantages, but its overvoltage study is not sufficient at present. In this study, the typical overvoltage phenomenon of hybrid LCC‐VSC‐HVDC power transmission is analysed and verified by power systems computer‐aided design/electro‐magnetic transient design and control simulation. On the one hand, overvoltage mechanism of modular multilevel converter module caused by single‐phase grounding fault at the valve side of VSC transformer is analysed, and arresters are configured for the protection of the valve. On the other hand, the stress of the arresters at the LCC side is analysed. Installing current reversing protection on the VSC side is proposed. The research of this study provides the recommended arresters configuration in the converter station of hybrid LCC‐VSC‐HVDC power transmission system.