TY - GEN
T1 - Current control for unbalance capacitors voltage STATCOM
AU - Yang, Rongfeng
AU - Wang, Gaolin
AU - Yu, Yong
AU - Xu, Dianguo
PY - 2010
Y1 - 2010
N2 - Static compensation (STATCOM) gets more popular as the flexible AC transmission (FACTS) devices increase. The transformerless STATCOM has low cost and concentrates the research interests, however, the capacitors voltage unbalance problem will deteriorate its performance with more harmonics and over current/voltage faults. This paper presented one current control strategy to solve this problem. Firstly, the conventional DC voltage and current loop are implemented with decoupled method to control the active and reactive power for the symmetry system. Secondly, with adjusting the voltage angle, the unbalance phase voltages are impaired. Thirdly, the PWM redundant states replacement method is adopted to avoid the unbalance capacitors voltage in each phase[4], and new current loop to fast the balance process is designed. The simulation results demonstrate that this strategy could suppress the unbalance voltage and provide practicable measures for STATCOM.
AB - Static compensation (STATCOM) gets more popular as the flexible AC transmission (FACTS) devices increase. The transformerless STATCOM has low cost and concentrates the research interests, however, the capacitors voltage unbalance problem will deteriorate its performance with more harmonics and over current/voltage faults. This paper presented one current control strategy to solve this problem. Firstly, the conventional DC voltage and current loop are implemented with decoupled method to control the active and reactive power for the symmetry system. Secondly, with adjusting the voltage angle, the unbalance phase voltages are impaired. Thirdly, the PWM redundant states replacement method is adopted to avoid the unbalance capacitors voltage in each phase[4], and new current loop to fast the balance process is designed. The simulation results demonstrate that this strategy could suppress the unbalance voltage and provide practicable measures for STATCOM.
KW - Capacitors voltage balance
KW - Power transmission control
KW - Static VAR compensators
UR - https://www.scopus.com/pages/publications/78751520358
U2 - 10.1109/POWERCON.2010.5666116
DO - 10.1109/POWERCON.2010.5666116
M3 - 会议稿件
AN - SCOPUS:78751520358
SN - 9781424459407
T3 - 2010 International Conference on Power System Technology: Technological Innovations Making Power Grid Smarter, POWERCON2010
BT - 2010 International Conference on Power System Technology
T2 - 2010 International Conference on Power System Technology: Technological Innovations Making Power Grid Smarter, POWERCON2010
Y2 - 24 October 2010 through 28 October 2010
ER -