The planning of the electrical network of a home building powered by solar cells

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Supervisor:
Dr. Kiss Péter
Department of Electric Power Engineering

My diploma work is dealing with the designing of the electrical system of a solar house. The house will be also constructed during the Solar Decathlon Europe 2012 competition in 2012 september in Madrid. Student groups from various universities have to design, construct and furnish a lightweight structured passive house with approx. 70 m2 floorspace. Our team from the Budapest University of Technology and Economics (BUTE) has 65 members at this time. My job is planning the single-phase electrical system and the lighting system. In Spain residential consumers are allowed to take 63 A (14.5 kW) on single-phase - in contrast to the Hungarian 5 kVA limit. Crystalline solar panels will be mounted on the 6,5° pitch angle roof and on the south facade. The power of the solar system is 10 kWp, it is the allowed maximum according to the competition rules. For uninterruptible power supply (UPS) and for energy management purposes we'll use a battery system.

At the beginning of the design process I choosed the appropriate electrical household devices, then I estimated their consumption and generated the typical daily load curves. After this I split the electric consumers and the rooms into separate circuits, and planned the selective protection system. I also designed the lighting system of the house, and analyzed the opportunity of creating a DC system for lighting purposes.

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