D. Gowthami, M. Sankar Babu


The DVR can regulate the burden current in the problems for example sag, swell, and harmonics within the supply voltages. Hence, it may safeguard the critical consumer loads from tripping and consequent losses. Current sags within an electrical grid aren't always easy to avoid due to the finite clearing duration of the problems that create the current sags and also the propagation of sags in the transmission and distribution systems towards the low-current loads. Within this paper, different current injection schemes for dynamic current restorers (DVRs) are examined with particular concentrate on a brand new method accustomed to minimize the rating from the current source ripper tools (VSC) utilized in DVR. A brand new control strategy is suggested to manage the capacitor-supported DVR. The charge of a DVR is shown having a reduced-rating VSC. The reference load current is believed while using unit vectors. The synchronous reference frame theory can be used for that conversion of voltages from rotating vectors towards the stationary frame. The compensation from the current sag, swell, and harmonics is shown utilizing a reduced-rating DVR.


Dynamic Voltage Restorer (DVR); Power Quality; Unit Vector; Voltage Harmonics; Voltage Sag; Voltage Swell;


K. R. Padiyar, FACTS Controllers in Transmission and Distribution. New Delhi, India: New Age Int., 2007.

J. G. Nielsen, F. Blaabjerg, and N.Mohan, “Control strategies for dynamic voltage restorer compensating voltage sags with phase jump,” in Proc. IEEE APEC, 2001, vol. 2, pp. 1267–1273.

J. W. Liu, S. S. Choi, and S. Chen, “Design of step dynamic voltage regulator for power quality enhancement,” IEEE Trans. Power Del., vol. 18, no. 4, pp. 1403–1409, Oct. 2003.

A. K. Jindal, A. Ghosh, and A. Joshi, “Critical load bus voltage control using DVR under system frequency variation,” Elect. Power Syst. Res., vol. 78, no. 2, pp. 255–263, Feb. 2008.

M. H. J. Bollen, Understanding Power Quality Problems—Voltage Sags and Interruptions. New York, NY, USA: IEEE Press, 2000.

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