Implementation of Single Phase SRF based Dynamic Voltage Restorer in Distribution System for Power Quality Improvement
Laasya Reddy.Y1, Vinay Kumar.A2, Praveen.J3

1Laasya Reddy Yalaka, Student, M.Tech, POWER Systems (EEE), GRIET, Hyderabad, India.
2Vinay Kumar Awaar, Associate Professor, Department of Electrical & Electronics Engineering, GRIET, Hyderabad, India.
3Dr. Praveen Juggy, Professor, Electrical & Electronics Engineering Department, GRIET, Hyderabad, India.

Manuscript received on September 10, 2019. | Revised Manuscript received on 20 September, 2019. | Manuscript published on October 10, 2019. | PP: 3451-3456 | Volume-8 Issue-12, October 2019. | Retrieval Number: L26011081219/2019©BEIESP | DOI: 10.35940/ijitee.L2601.1081219
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Abstract: Power Quality (PQ) is becoming an important issue as the increase in electricity use continues. Reduction in the quality of electrical power is due to various kinds of voltage related problems such as voltage sag, voltage swell, short-lived interruptions, harmonic distortions, notches, flickers, spikes and transients. The major power quality problems in single phase system are voltage sag and harmonics. The Mitigation of voltage sag and harmonics in single phase system under the distorted power supply situations was effectively eliminated with Dynamic Voltage Restorer (DVR). The single-phase SRFT (Synchronous Reference Frame Theory) was implemented in the controller design for DVR. DVR will produce required amount of instantaneous voltage to be injected. Designed controller technique will utilize the function of Moving Average Filter (MAF) for getting the fundamental quantity of positive sequence component from the disturbed supply voltage. Experimental results of DVR prove its effectiveness to mitigate voltage sag and harmonics during disturbed power supply condition.
Keywords: DVR, Voltage Sag, Voltage Swell, Power Quality, Total Harmonic Distortion, Single Phase Synchronous Reference Frame Theory, MAF (Moving Average Filter).
Scope of the Article: Quality Control