Title :
Study on Capacitor Commutated Converter applied in HVDC projects
Author :
Yang, Fenyan ; Chang, Yong
Author_Institution :
Dept. of Electr. Eng., Zhejiang Univ., Hangzhou
Abstract :
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.
Keywords :
HVDC power convertors; capacitor switching; commutators; short-circuit currents; transient response; AC/DC interconnected system model; Ge-Nan HVDC monopolar transmission project; HVDC projects; PSCAD/EMTDC simulation; capacitor commutated converter; electromagnetic transient simulation; line commutated converter system; single-phase short circuit; steady-state performance; transient performance; transient response; Analog-digital conversion; Analytical models; Capacitors; Circuit simulation; HVDC transmission; Interconnected systems; Performance analysis; Steady-state; Valves; Voltage; HVDC transmission; capacitor commutated converter (CCC); commutated capacitor; steady-state performance; transient performance;
Conference_Titel :
Power Engineering Society General Meeting, 2007. IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
1-4244-1296-X
Electronic_ISBN :
1932-5517
DOI :
10.1109/PES.2007.385778
