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Appl. Sci. 2017, 7(2), 208; doi:10.3390/app7020208

Overload Control in Smart Transformer-Fed Grid

1
Power Electronics, Christian-Albrechts University of Kiel, Kiel D-24143, Germany
2
School of Electrical and Computer Engineering, National Technical University of Athens, Athens 157 80, Greece
*
Author to whom correspondence should be addressed.
Received: 9 December 2016 / Accepted: 13 February 2017 / Published: 20 February 2017
(This article belongs to the Special Issue Advancing Grid-Connected Renewable Generation Systems)
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Abstract

Renewable energy resources and new loads—such as electric vehicles—challenge grid management. Among several scenarios, the smart transformer represents a solution for simultaneously managing low- and medium-voltage grids, providing ancillary services to the distribution grid. However, unlike conventional transformers, the smart transformer has a very limited overload capability, because the junction temperature—which must always be below its maximum limit—is characterized by a short time constant. In this work, an overload control for smart transformer by means of voltage and frequency variations has been proposed and verified by means of simulations and experiments. View Full-Text
Keywords: smart transformer; solid state transformer; overload control; voltage control; frequency control smart transformer; solid state transformer; overload control; voltage control; frequency control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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De Carne, G.; Zou, Z.; Buticchi, G.; Liserre, M.; Vournas, C. Overload Control in Smart Transformer-Fed Grid. Appl. Sci. 2017, 7, 208.

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