Open AccessEffect of cascade STATCOM on stabilising voltage in high voltage direct current
Author(s) -
Jiaqi Li,
Jun Wen,
Helin Liu,
Shiyou Yu
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8406
Subject(s) - cascade , voltage , grid , transient (computer programming) , power grid , power (physics) , high voltage , ac power , voltage source , control theory (sociology) , high voltage direct current , direct current , engineering , computer science , electrical engineering , topology (electrical circuits) , physics , mathematics , control (management) , artificial intelligence , geometry , quantum mechanics , chemical engineering , operating system
Yongfu high voltage direct current (HVDC) project in Yunnan is the main access to send the power out and also an important part of the channel of transmission of power in west to east in China southern power grid. However, the Funing Converter Station of the project connects to a weak AC system; thus, there is a need for a Static Synchronous Compensator (STATCOM) to compensate the reactive power. This study presents the principle of the STATCOM, all kinds of the topologies of STATCOM, with their advantages and disadvantages compared to each other and the representative projects. Then, the cascade STATCOM is emphatically analysed that is applied to the project. Also, the cascade STATCOM model and the project model are established in PSCAD/EMTDC. Afterwards, the effect of STATCOM on the converter station is studied, which works in steady state and in transient of varieties of short circuit faults. Finally, the simulation results verify the effectiveness of cascade STATCOM on stabilising the voltage.