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VGB CONGRESS 2017 - Generation in Competition
Abstract of the Lecture
The abstracts were not edited by VGB and are printed as received by our authors.
Section E1 Ι No future without digitisation!Thursday, 14 September 2017, 09:10-09:20h/E1.2 |
Networking of photovoltaics, electromobility, heat pumps and power grid: First operating experienceRalph Lingel und Thomas Nordmann, TNC Consulting AG, Switzerland Prof. Harald Thorwarth, University Rottenburg, GermanyIn Switzerland about 50% of the overall final energy demand is consumed by private households, considering electricity, heat and private mobility. With increasing sales of PV systems, heat pumps and electric vehicles energy efficient residential buildings are becoming more and more able to cover their energy demand for these three sectors, at least on an annual basis. Residential homes are becoming "prosumers", producers and consumers. Mostly production and demand do not occur at the same time and are not coordinated. Further deployment of electric cars and PV systems can lead to challenging production and demand peaks in power grids. To coordinate the different energy related components in a residential building an electronic building automation “conductor” was developed, acting as the mastermind. It dynamically and continuously adapts the power demanding loads such as charging stations for EV’s and heat pumps to the available PV production while ensuring user needs. In Summer 2016 the control algorithms of the conductor were activated for both projects with the main features “PV-Charging” and “Fast-Charging” for the EVs. It could be shown that virtually no energy is exchanged with the grid during daytime when PV charging is selected. The heat pump of the residential home was operated with standard settings in the period January - June 2016. Starting from July 2016 the water heating system, also provided by the heat-pump, was adapted to the PV production. With the start of the heating season at the beginning of October 2016 a control algorithm for the heat pump was implemented to adjust the load profile for heating to the PV production. It could be shown that most of the PV energy produced could be consumed within the building during heating season due to this mode of operation. Especially the controlled charging and discharging of the buildings thermal energy capacity is an essential advantage. |
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