Research Article Open Access

A Novel Method of Voltage Sag and Swell Estimation for Power System Applications

A. Vetrivel1, Jovitha Jerome2 and N. Malmurugan2
  • 1 Anna University, India
  • 2 , India
American Journal of Engineering and Applied Sciences
Volume 6 No. 2, 2013, 233-240

DOI: https://doi.org/10.3844/ajeassp.2013.233.240

Submitted On: 29 January 2012 Published On: 4 July 2013

How to Cite: Vetrivel, A., Jerome, J. & Malmurugan, N. (2013). A Novel Method of Voltage Sag and Swell Estimation for Power System Applications. American Journal of Engineering and Applied Sciences, 6(2), 233-240. https://doi.org/10.3844/ajeassp.2013.233.240

Abstract

This study presents four simple mathematical models to build the voltage shape with the knowledge of few parameters and detects voltage sag and swells accurately. Fourier series, cubic polynomial, Rational functions and Sum of Sin functions are used in this study to model the voltage profile. A new algorithm is developed to detect sag or swell in all the four models. The voltage estimation due to cubic polynomial has more voltage error and then rational function. The sum of sine function and Fourier series functions does accurate voltage estimation. Errors due to various functions are also tabulated for one electrical cycle. The performance of each method has been compared with other to know the effectiveness of different models and their results are presented.

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Keywords

  • Dynamic Voltage Restorer (DVR)
  • Voltage Sag and Swell
  • Fourier
  • Cubic Polynomial
  • Rational and Sum of Sine Functions