A New Multifunctional DVR for Compensation of Voltage Sag

  • Authors

    • N Srinivasa Rao
    • Dr A. Selwin Mich Priyadharson
    https://doi.org/10.14419/ijet.v7i3.20.17375
  • Point of common coupling (PCC), dynamic voltage restorer (DVR), emergency control, voltage sag, voltage swells.

  • Now days, power quality is an important application. Sophisticated electronic equipments, variable speed drive having high efficiency,
    and power electronic controller, are used to improve power quality. Voltage sags are the most common power quality disturbance in the
    distribution system. It occurs due to the fault in the electrical network or by the starting of a large induction motor and this can be solved
    by using the custom power devices such as Dynamic Voltage Restorer (DVR). It is smaller in size, and provides fast dynamic response to
    the disturbance and also has lower cost. A multifunctional DVR is used here to improve the power quality with the help of Posicast and
    P+Resonant controllers to improve the transient response and eliminate the steady-state error. Simulation result shows the capability of
    the DVR to control the emergency conditions of the distribution systems. The current limitation will restore the point of common
    coupling (PCC) (the bus to which all feeders under study are connected) voltage and Protect the DVR itself. The innovation here is that
    the DVR acts as virtual impedance with the main aim of protecting the PCC voltage during downstream fault without any problem in real
    power injection into the DVR.

  • References

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      Authors profile
      N.Srinivasa Rao did his M.tech at J.B.I.E.T Hyderabad with specialization of Electrical Power systems. He received Gold medal for his academic Excellence. He is currently Research Scholar and present working as Associate Professor in EEE department at Narasimha Reddy Engineering College, Hyderabad. His research interests include Power Systems, Power Quality, Power Electronics.
      Dr. A. Selwin Mich Priyadharson obtained his Diploma in Instrumentation & Control Engineering from Government Polytechnic, Udhagamandalam, India. Graduated B.E (Instrumentation & Control engineering) affiliated to M.K University and completed his M.E (Control & Instrumentation Engineering) affiliated to Anna University, from Arulmigu Kalasalingam College of Engineering Srivilliputhur, India. He has obtained his Ph.D degree in Electronics Engineering from Sathyabama University, Chennai. Currently he is working as Associate Professor in School of Electrical, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, Chennai, Tamil Nadu, India. His area of interest Encompasses automation, adaptive, predictive, neural networks, fuzzy logic, expert systems, networking, modeling and simulation.

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  • How to Cite

    Srinivasa Rao, N., & A. Selwin Mich Priyadharson, D. (2018). A New Multifunctional DVR for Compensation of Voltage Sag. International Journal of Engineering & Technology, 7(2.20), 389-393. https://doi.org/10.14419/ijet.v7i3.20.17375