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IEEE PowerTech 2017

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Tutorial 1: The Smart Transformer - Impact on the Electric Grid and Technology Challenges - Block 2

Sunday, 18 June 2017
11:00 - 12:30

Room 1.218

Organiser(s)Marco Liserre, Kiel University, Germany

Speaker(s)Marco Liserre, Kiel University, Germany; Costas Vournas, National Technical University of Athens, Greece; Giampaolo Buticchi, Kiel University, Germany; Giovanni De Carne, Kiel University, Germany

Abstract. The increasing connection of renewables and new loads is challenging the distribution grids. In the ERC Consolidator Grant “Highly Efficient And Reliable smart Transformer – HEART”, a new concept of transformer is proposed: the “Smart Transformer”. The Smart Transformer is a power electronics-based transformer, aims not only to adapt the voltage level from MV to LV grids but also to provide ancillary services to the grid. The Smart Transformer can control the reactive power in MV grid sustain the voltage profile, and it can interact with loads and generators in the LV grid by means of voltage and frequency control. Moreover, the Smart Transformer is a natural connection point for hybrid (AC and DC) grids both at MV and LV levels. This tutorial aims to introduce the Smart Transformer concept, topologies and basic controller at first, and to explore the advanced features that the Smart Transformer offers. The tutorial focuses on the ancillary services offered in LV and MV grids by the Smart Transformer, with particular focus on voltage and frequency control of LV grids, load sensitivity identification and load control, and reactive power support in MV grids. The tutorial will be composed of theoretical lectures (50%), practical examples (25%) and on-site simulations using PSCAD (25%).


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