This paper presents a novel approach to mitigate the inrush current by using Point On Wave (POW) switching technique. The proposed technique is used to limit the inrush current while energizing the transformer. An algorithm is developed using EMTP/PSCAD software and the prototype with the proposed algorithm is built in the laboratory. It is tested by using DSP TMS320F28069 controller. The simulation and hardware results are presented to validate the capability of the proposed system. © 2017 IEEE.

Razia Sultana W

Department of Energy and Power Electronics

School of Electrical Engineering

Vellore Campus

Sarat Kumar Sahoo

Ankit Modi

M Balamurugan

Saransh Chhawchharia

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

2017 Innovations in Power and Advanced Computing Technologies (i-PACT)

IET Electric Power Applications

Modelling of inrush current in transformers using inverse Jiles–Atherton hysteresis model with a Neuro-shuffled frog-leaping algorithm approach

11th International Conference on Electrical Power Quality and Utilisation

A comparative investigation of electromechanical stresses on transformers caused by inrush and short-circuit currents

IEEE Transactions on Energy Conversion

Dynamic Modeling of Three-Phase Asymmetric Power Transformers With Magnetic Hysteresis: No-Load and Inrush Conditions

2008 Joint International Conference on Power System Technology and IEEE Power India Conference

New Method for Discrimination of Transformers Internal Faults from Magnetizing Inrush Currents Using Wavelet Transform

Sympathetic inrush current phenomenon occurs when a transformer is switched on in a power system network containing other transformers which are already energized. In this paper, the phenomenon of sympathetic inrush current is investigated using nonlinear-transient field-circuit coupled finite element formulation. The cases of the transformers connected in parallel and in series have been considered. The results obtained for a 31.5 MVA, three-phase transformer are presented and discussed in detail. This work also includes the investigation of parameters affecting the magnitude and duration of sympathetic inrush phenomenon, such as series resistance, switching-on angle, residual flux density and load conditions. These analyses provide a sound theoretical basis for a thorough understanding of the phenomenon. © 2007 IEEE.

2007 IEEE Power Engineering Society General Meeting, PES

Analysis of sympathetic inrush phenomena in transformers using coupled field-circuit approach

Reduction of inrush current using point on wave switching in power transformers

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