Title :
Start-up scheme for HVDC system based on modular multilevel converter
Author :
Li Tan ; Zhao Chengyong ; Xu Jie ; Cai Xinhong ; Pang Hui ; Lin Chang
Author_Institution :
State Key Lab. of Alternate Electr. Power Syst. With Renewable Energy Sources, North China Electr. Power Univ., Beijing, China
Abstract :
For the advantage of lower harmonic content, the modular design, lower switching frequency and so on, Modular multilevel converter (MMC) has become the development tendency of voltage source converter based HVDC (VSC-HVDC) . The working principle of MMC-HVDC is analyzed and the start-up scheme is researched in detail. Based on the “two-stage” start-up scheme, a calculation method of the limiting resistance is proposed, a method to set the rising slope of DC voltage and reference value of reactive power control is proposed. In addition, to realize power transmission, detailed procedures are designed based on the D-Q decoupled control with margin control. A two-terminal active MMC-HVDC simulation model in PSCAD/EMTDC is established and the efficiency of the proposed scheme is validated.
Keywords :
HVDC power convertors; power transmission control; reactive power control; D-Q decoupled control; DC voltage slope; HVDC system; PSCAD-EMTDC; VSC-HVDC; harmonic content; modular design; modular multilevel converter; power transmission; reactive power control; start-up scheme; switching frequency; two-stage start-up scheme; two-terminal active MMC-HVDC simulation model; voltage source converter; Limiting resistance calculation; Modular multilevel converter; Start-up scheme; power transmission;
Conference_Titel :
Renewable Power Generation Conference (RPG 2013), 2nd IET
Conference_Location :
Beijing
Electronic_ISBN :
978-1-84919-758-8
DOI :
10.1049/cp.2013.1792
