Verification of a new energy control strategy for dynamic voltage restorer by simulation

Abstract To restore the load voltage, dynamic voltage restorer (DVR), which installed between the supply and a sensitive load, should inject voltage and active power from DVR to the distribution system during voltage sag. Due to the limit of energy storage capacity of DC link, it is necessary the minimize energy injection from DVR. In this paper the techniques of the supply voltage sag compensation in a distribution feeder are presented. In addition, a new concept of restoration technique is suggested to inject minimum energy for a given apparent power of DVR. Simulation results carried out by PSCAD/EMTDC 1 , verify the efficiency of the proposed method.

[1]  Gao Jun,et al.  A novel dynamic voltage restorer and its unbalanced control strategy based on space vector PWM , 2002 .

[2]  Nicholas Jenkins,et al.  Four-wire dynamic voltage restorer based on a three-dimensional voltage space vector PWM algorithm , 2003 .

[3]  Mike Barnes,et al.  Control of a Battery Supported Dynamic Voltage Restorer , 2002 .

[4]  Il-Yop Chung,et al.  The DC link energy control method in dynamic voltage restorer system , 2003 .

[5]  Hyosung Kim.  Minimal energy control for a dynamic voltage restorer , 2002, Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579).

[6]  D. M. Vilathgamuwa,et al.  Design and Analysis of the Inverter-Side Filter Used in the Dynamic Voltage Restorer , 2002, IEEE Power Engineering Review.

[7]  D. Retzmann,et al.  Improvement of power quality with advanced power electronic equipment , 2000, DRPT2000. International Conference on Electric Utility Deregulation and Restructuring and Power Technologies. Proceedings (Cat. No.00EX382).

[8]  Xu Dianguo,et al.  Unified power quality conditioner (UPQC): the principle, control and application , 2002, Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579).