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   Start-up Control of a HVDC Grid Based on MMC with Integrating Large-Scale Wind Farms   [View] 
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 Author(s)   Xiao ZHOU 
 Abstract   With the rapid development of voltage source converter (VSC) based high voltage direct current (HVDC) transmission technology, the HVDC grid will be an effective solution for large-scale renewable energy generations integration. The modular multilevel converter (MMC) is one the most promising topology for HVDC and DC grid presently. The precharging of the MMCs and start-up of DC grid are essential problems. This paper studies the sequential start-up control of the VSC-HVDC grid with wind farms integration. After the control of system discussed, the precharging mechanism of MMC is analyzed. A coordinated start-up control scheme of a DC grid with integrating large-scale wind farms is presented as well as sequential start-up control methods under typical operation modes with HVDC breakers are also investigated. Cases studied are carried on a four-terminal HVDC grid model in PSCAD/EMTDC to verify the proposed schemes. 
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Filename:0438-epe2017-full-16104190.pdf
Filesize:458.4 KB
 Type   Members Only 
 Date   Last modified 2018-04-17 by System