A Scheme of Dynamic Voltage Restorer to Improve Power Quality in Large Scale Industrial Enterprises

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.

DOI: 10.4236/jpee.2016.42003                

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.

Keywords

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

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Huang, X.-Y. (2011) Dynamic Voltage Restorer Based on Super-Capacitor. M.S. Dissertation, Huazhong University of Science & Technology, Wuhan.
[2]	Love, D.J. (1994) Reliability of Utility Supply Configurations for Industrial Power Systems. IEEE Transaction on Industry Applications, 30, 1303-1308. http://dx.doi.org/10.1109/28.315243
[3]	Han, Y.-D., Jiang, Q.-R., Le, J. and Yan, G.-G. (2003) Modern Electric Power and FACTS&DFACTS. Electrical Equipment, 4, 5-10.
[4]	Nielsen, J.G. and Blaabjerg, F. (2005) A Detailed Comparison of System Topologies for Dynamic Voltage Restorers. IEEE Transactions on Industry Applications, 41, 1272-1280. http://dx.doi.org/10.1109/TIA.2005.855045
[5]	Jothibasu, S. and Mishra, M.K. (2014) A Control Scheme for Storageless DVR Based on Characterization of Voltage Sags. IEEE Transactions on Power Delivery, 29, 2261-2269. http://dx.doi.org/10.1109/TPWRD.2014.2316598
[6]	Ramachandaramurthy, V.K., Fitzer, C., Arulampalam, A., Zhan, C., Barnes, M. and Jenkins, N. (2002) Control of a Battery Supported Dynamic Voltage Restorer. In IEE Proceedings-Generation, Transmission and Distribution Meeting, Manchester, 533-542.
[7]	Liu, X., Zhu, X.-G., Zhu, X. and Jiang, X.-H. (2004) Compensation of Instantaneous Voltage Drop Based on Superconducting Energy Storage. Automation of Electric Power Systems, 28, 40-44.
[8]	de Andrade, R., Ferreira, A.C., Sotelo, G.G., Silva Neto, J.L., Rolim, L.G.B., Suemitsu, W.I., Bessa, M.F., Stephan, R.M. and Nicolsky, R. (2005) Voltage Sags Compensation Using a Superconducting Flywheel Energy Storage System. IEEE Transaction on Applied Superconductivity, 15, 2265-2268. http://dx.doi.org/10.1109/TASC.2005.849627
[9]	Yang, C., Han, Y.-D., and Ma, W.-X. (2004) Research of Single-phase Series Power Quality Compensator Controller. Automation of Electric Power Systems, 26, 45-48.
[10]	Yin, Z.-D. and Zhi, L.-X. (2005) Energy Extraction Method of Dynamic Voltage Restorer Based on High-Frequency Rectifier. Power Electronics, 39, 67-69.
[11]	Huang, L. (2012) Research on Voltage Sag Influence the Sensitive Load and Control Measures, M.S. Dissertation, Guangdong University of Technology, Guangzhou.
[12]	Guan, X.-B. (2012) Research on Dynamic Voltage Restorer, M.S. Dissertation, Huazhong University of Science & Technology, Chengdu.
[13]	Fu, Y.-S. and Wei, M.-G. (2011) Power Quality Features of Different Industry Loads. Power Capacitor & Reactive Power Compensation, 32, 11-17.
[14]	Sun, W. and Qin, L.-J. (2008) Power Quality Analysis and Control in Iron and Steel Enterprises. Electrical Equipment, 9, 68-71.
[15]	Yuan, C. (2005) Research for Real-time Detection of Characteristics of Voltage Sag and Compensation Method of Dynamic Voltage Restorer, M.S. Dissertation, Sichuan University, China.
[16]	Wang, B.S. Venkataramanan, G. and Illindala, M. (2006) Operation and Control of a Dynamic Voltage Restorer Using Transformer Coupled H-Bridge Converters. IEEE Transactions on Power Electronics, 21, 1053-1061. http://dx.doi.org/10.1109/TPEL.2006.876836