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Study on Capacitor Commutated Converter applied in HVDC projects

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2 Author(s)
Fenyan Yang ; Dept. of Electr. Eng., Zhejiang Univ., Hangzhou ; Yong Chang

Some aspects on capacitor commutated converter (CCC) applied in HVDC projects are studied. Through the analysis of the simplified AC/DC interconnected system model, the steady-state performance of CCC system is achieved, which is compared with line commutated converter (LCC) system. The expression of the peak voltage across the valves is deduced, and a proper approach to select the commutated capacitor's size is given based on the expression. With single-phase short circuit simulated, the transient performances of CCC and LCC are compared and analyzed. The simulation tool is PSCAD/EMTDC, which is for electromagnetic transient simulation. The research object is Ge-Nan HVDC mono-polar transmission project.

Published in:

Power Engineering Society General Meeting, 2007. IEEE

Date of Conference:

24-28 June 2007