Solid state transformer parallel operation with a tap changing line frequency transformer

Fernando, W, Meegahapola, L and Thilakarathne Mudiyanselage, C 2017, 'Solid state transformer parallel operation with a tap changing line frequency transformer', in Proceedings of the 7th Innovative Smart Grid Technologies - Asia (ISGT-Asia 2017), Auckland, New Zealand, 4 7 December 2017, pp. 769-774.


Document type: Conference Paper
Collection: Conference Papers

Title Solid state transformer parallel operation with a tap changing line frequency transformer
Author(s) Fernando, W
Meegahapola, L
Thilakarathne Mudiyanselage, C
Year 2017
Conference name ISGT-Asia 2017: Smart Grid for Smart Community
Conference location Auckland, New Zealand
Conference dates 4 7 December 2017
Proceedings title Proceedings of the 7th Innovative Smart Grid Technologies - Asia (ISGT-Asia 2017)
Publisher IEEE
Place of publication United States
Start page 769
End page 774
Total pages 6
Abstract Increase in load demand require upgrade of distribution transformers and significant investments. An alternative to a complete overhaul of the distribution transformer is to operate a solid state transformer in parallel with the line frequency transformer. This allows functionality to either share the load or accommodate overload conditions. In addition, other options for superior distribution system voltage control may be present. This paper focuses on the parallel operation and control strategy for a 33 kV/415 V, 200 kVA distribution transformer with a 200 kVA parallel solid state transformer. Two control strategies, namely parallel load sharing operation and overload accommodation are investigated. Simulation results are presented for the parallel operation of a SST with a LFT and the effectiveness of the two strategies are discussed.
Subjects Industrial Electronics
Keyword(s) power distribution control
power transformers
transformer windings
voltage control
control strategy
parallel load sharing operation
DOI - identifier 10.1109/ISGT-Asia.2017.8378448
Copyright notice © 2017 IEEE
ISBN 9781538649510
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