Title :
Interconnection between different DC technologies at multi-terminal HVDC network
Author :
Omran, Ahmed M. ; Ahmed, K.H. ; Hamad, Mostafa S. ; Al-Arabawy, Ibrahim F.
Author_Institution :
Fac. of Eng., Alexandria Univ., Alexandria, Egypt
Abstract :
The interconnection between line commutated converter (LCC) and voltage source converter (VSC) at multiterminal HVDC network introduces a challenge especially during power reversal operation. LCC changes the direction of voltage and keeps the current at the same direction, however VSC changes the direction of current and keeps the voltage at the same polarity. In this paper, a control system for LCC and VSC integration is presented. Bidirectional DC/DC converter is proposed to connect LCC and VSC HVDC systems in normal and power reversal conditions. DC/DC Converter structure and controls are presented including the converter connection. MATLAB/SIMULINK simulations are carried out to verify proposed system performance converter operation in different conditions.
Keywords :
DC-DC power convertors; HVDC power convertors; HVDC power transmission; power transmission control; DC technologies; LCC HVDC systems; LCC integration; MATLAB simulation; SIMULINK simulation; VSC HVDC systems; VSC integration; bidirectional DC-DC converter; control system; converter connection; current direction; line commutated converter; multiterminal HVDC network; power reversal conditions; power reversal operation; voltage direction; voltage source converter; HVDC transmission; Inverters; Load flow; Power conversion; Rectifiers; Voltage control; DC/DC Converter; High voltage direct current (HVDC); Line commutated converter (LCC); Voltage source converter (VSC);
Conference_Titel :
Renewable Energy Research and Application (ICRERA), 2014 International Conference on
Conference_Location :
Milwaukee, WI
DOI :
10.1109/ICRERA.2014.7016573
