Transformer Inrush Current Mitigation for Series Voltage Sag Compensator

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2017 by IJETT Journal
Volume-48 Number-4
Year of Publication : 2017
Authors : Anil Kumar Pathak, Dr. A. K. Jhala, Pramod Kumar Rathore
  10.14445/22315381/IJETT-V48P234

MLA 

Anil Kumar Pathak, Dr. A. K. Jhala, Pramod Kumar Rathore "Transformer Inrush Current Mitigation for Series Voltage Sag Compensator", International Journal of Engineering Trends and Technology (IJETT), V48(4),187-192 June 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
Manufacturing industries are located in industrial park. Survey results suggest that 90% of interruption at industrial facilities is related voltage sag. An inrush mitigation technique is proposed and implemented in a synchronous reference frame sag compensator controller. The voltage sag compensator is based on three phase voltage source inverter and a coupling transformer for serial connection. In various companies voltage sag may affect many manufactures and may reduce the efficiency of the system which results sufficient losses in the power system. It is the most cost effective solution against voltage sags. When voltage sag happen, the transformers, which are often installed in front of critical loads for electrical isolation, are exposed to the disfigured voltages and a DC offset will occur in its flux linkage. A transformer inrush may occur at the start of sag compensator. This over current may damage the inrush protection of the series connected inverter and the transformer output voltage is greatly reduced due the magnetic saturation. When the compensator restores the load voltage, the flux linkage will be driven to the level of magnetic saturation and severe inrush current occurs. The compensator is likely to be interrupted because of its own over current protection. This paper proposes an inrush current mitigation technique together with a state-feedback controller for the Voltage sag compensator.

 References

[1] D. Sabin, An assessment of distribution system power quality, Elect. Power Res. Inst., Palo Alto, CA, EPRI Final Rep. TR-106249-V2, vol. 2, Statistical Summary Report, May 1996.
[2] C. J. Huang, S. J. Huang, F. S. Pai, Design of dynamic voltage restorer with disturbance-filtering enhancement, IEEE Transactions on Power Electronics, vol.18, pp.1202-1210, Sept. 2003.
[3] P. K. Lim, D.S. Dorr, Understanding and resolving voltage sag related problems for sensitive industrial customers, IEEE Power Engineering Society Winter Meeting, vol.4, pp.2886-2890, 2000.
[4] P. T. Cheng, C. L. Ni, J. M. Chen, Design of a state feedback controller for series voltage sag compensators, Power Conversion Conference, pp. 398-403, April 2007.
[5] Po-Tai Cheng An Inrush Mitigation Technique Of load Transformers For The Series Voltage Sag Compensator978-4244-1668-4/08/$25.00 2008 IEEE.
[6] Yogesh K Chauhan Bhavnesh Kumar and Sajid Ali.GBU Study and Performance of DVR for Voltage Quality Enhancement 987-1-4673-6150-7/13IEEE2013.
[7] Ajinkya M. Bhaware, 2M.F.A.R Satarkar Series Transformer Inrush Mitigation Technique during Change in Load for Distribution System Proceedings of 32nd IRF International Conference, 12th July 2015, Pune, India, ISBN: 978-93-85465-54-3.
[8] Venkatesh Dugyala, Ch.Nagalaxmi, V.K.R.Mohan Rao A Novel Control Strategy to Reduce Transformer Inrush Currents by Series Voltage Sag Compensator Science International Journal of Engineering Research and Development ISSN: 2278-067X, P-ISSN: 2278-800X,Volume 8, Issue 5 (August 2013), PP. 54-63.
[9] S.F. Torabi ,D. Nazarpour, Y. Shayestehfard Compensation of Sag and Swell Voltage using Dynamic Voltage Restorer (DVR) during Single line to Ground and Three phase faults ISSN 2077-3528 IJTPE Journal, September 2012.
[10] R.H. Salimin M.S.A .Rahim Simulation Analysis of DVR Performance for Volt-age Sag Mitigation the 5th International PEOCO 2011, Shah Alam , Selangor, Malaysai:6-7 June.
[11] Fawzi AL Jowder Modeling and Simulation of Dynamic Voltage Restore (DVR) Based on Hysteresis Voltage Control Member, IEEE. Apurva Kulkarni, Vinesh Choudhari, Rupesh Juware Mitigation of an Inrush Current of Power Trans-former by Using PWM-Inverter based Series Voltage Compensator.

Keywords
SVPWM, Inrush current, Voltage sag compensator.