Undersökning av det elektriska systemet för tidvattenkraftverket Deep Green i spänningsintervallet 500V till 3,3kV

Sammanfattning: With today’s need for renewable energy new technologies needs to be developed tomeet this demand. Minestos concept for the tidal power plant Deep Green is onesuch technology. Deep Green is a power plant that with its unique movement patternextracts energy from tidal currents that previously have been untapped. In thisproject the electrical system of Deep Green is studied and what the effects are fora rise in operating voltages from 500V to 690V , 1kV and 3, 3kV . The procedurefor this project is a literature study in connection with simulations with the programsMatlab, Comsol and Pspice. The results show that an increased voltage to690V will lead to the power loss being reduced by half in the submarine cable. Thehigher voltage leads to a fractional change of the power electronics in the system.The conclusion of this study is that a heightened voltage level that gives lower lossesis favorable. To implement the voltages 1kV and 3, 3kV further investigationsare required because several components needs to be replaced or modified at thesevoltage levels.