Open AccessHV isolated power supply system for complex multiple electrical potential equipment in 500 kV hybrid DC breaker
Author(s) -
Zhang Xiangyu,
Yu Zhanqing,
Zeng Rong,
Zhang Meng,
Zhang Yuehuang,
Xiao Fengliang,
Li Wei
Publication year - 2020
Publication title -
high voltage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.732
H-Index - 20
ISSN - 2397-7264
DOI - 10.1049/hve.2019.0260
Subject(s) - circuit breaker , electrical engineering , overvoltage , transformer , electric power system , ac adapter , power (physics) , voltage , switched mode power supply , engineering , high voltage , computer science , physics , quantum mechanics
High‐voltage direct current circuit breakers (HVDC CB) are one of the key technologies of multi‐terminal DC systems and DC grids. Different from other equipment that use a large number of power electronic devices, the HVDC CB cannot obtain its power from the primary system at high potential, making the power supply of the complex multiple electrical potential equipment in HVDC CB a challenge. In this study, the authors propose an HV isolated power supply system based on the multi‐output high‐frequency isolated power supply unit and the cascaded isolation transformer network. This power supply system can support the 500 kV CB to turn‐off 25 kA current with 800 kV overvoltage.