TITLE:
A Scheme of Dynamic Voltage Restorer to Improve Power Quality in Large Scale Industrial Enterprises
AUTHORS:
Shan Shi, Jun Xiao, Shu Liu, Liming Tu, Qin Cao, Yu Liang, Gaoyan Zhang, Chengxiong Mao
KEYWORDS:
Power Quality, Large Scale Enterprises, Double Power Supply with Double Load, DVR Compensation Scheme
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.4 No.2,
February
18,
2016
ABSTRACT:
Loads in large scale industrial enterprises
are always various and complex, causing insecure power quality. Meanwhile, some
sensitive loads or precise instruments demand for high power quality. When
voltage flicker or harmonics occurs, dynamic voltage restorer (DVR) can be used
to stabilize the load-side voltage, which is a good manner of improving power
quality. The paper explains the load demand in large scale industrial
enterprises, analyzes several common voltage compensation scheme of DVR, and
comes up with another voltage compensation scheme of DVR applied for double
power supply with double load. A Simulink model according to the new scheme is
also built in MATLAB/Simulink to test its performance. Simulation results show
that the proposed scheme can guarantee the load-side voltage stability, which
is an effective scheme for managing power quality.