Title :
Negative-sequence admittance control scheme for distributed compensation of grid voltage unbalance
Author :
Wang, Fei ; Mao, Hualong ; Xu, Dezhi ; Ruan, Yi
Author_Institution :
Dept. of Mechatron. Eng. & Autom., Shanghai Univ., Shanghai, China
Abstract :
This paper proposes to ease the responsibility of the grid for voltage unbalance correction with distributed generation systems. Specifically, the functionality to decrease the negative-sequence voltage at the grid connection point is added to the control of distributed generation inverters. By controlling the negative-sequence admittance of DG inverters, co-operative compensation for unbalanced grids is achieved. Detailed control scheme and small-signal modeling are presented, together with simulation results for the verification.
Keywords :
distributed power generation; invertors; power grids; voltage control; DG inverters; distributed compensation; distributed generation inverters; distributed generation systems; grid connection point; grid voltage unbalance correction; negative-sequence admittance control scheme; negative-sequence voltage; small-signal modeling; unbalanced grid cooperative compensation; Current measurement; Feeds; Integrated circuit modeling; Load modeling; Superluminescent diodes; Voltage control;
Conference_Titel :
Control and Modeling for Power Electronics (COMPEL), 2012 IEEE 13th Workshop on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4244-9372-2
Electronic_ISBN :
1093-5142
DOI :
10.1109/COMPEL.2012.6251728
