Author(s)

Shan Shi¹, Jun Xiao², Shu Liu¹, Liming Tu¹, Qin Cao¹, Yu Liang², Gaoyan Zhang², Chengxiong Mao²

¹Beijing Sifang Automation Co., Ltd., Beijing 100085, China.
²School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

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.

Power Quality, Large Scale Enterprises, Double Power Supply with Double Load, DVR Compensation Scheme

Shi, S. , Xiao, J. , Liu, S. , Tu, L. , Cao, Q. , Liang, Y. , Zhang, G. and Mao, C. (2016) A Scheme of Dynamic Voltage Restorer to Improve Power Quality in Large Scale Industrial Enterprises. Journal of Power and Energy Engineering, 4, 19-26. doi: 10.4236/jpee.2016.42003.