112 45 Power loss management M. Henriksen, P. Karstensen and N. Thanthrige DTU Elektro, Technical university of Denmark INTRODUCTION Music festivals such as Roskilde festival require installing a short term electric grid. The consumers which include food stands and small marketplaces, often have a very limited knowledge about their power consumption. Electricity is bought in greater quantities than needed, and therefore a lot of power and money is wasted. Nevertheless, it is seen that very expensive equipment is used to watch the power consumption, by measuring at the electric node points. (DEIF meters are used to help this challenge). DESCRIPTION This project involves the construction of cheap, small and accurate energy meters, that measure current, voltage and power. The device is a standalone unit, and the information is wirelessly sent to a central processing unit, where the data can be analyzed. The goal is simply to gather information about changes in the electric grids (in real time). By doing this a lot of knowledge is now present and ready to be interpreted. Questions that would be answered would be of the category: - How much electricity did we use on specific occasions? (Busy or less busy times) - When is it ideal to use less power for refrigerators or ovens? - How much electricity should we buy for next year? THE BROADER PERSPECTIVE Being able to measure at certain points and mapping this data into a chart, is a brand new technology. Times are changing, and now in 2016 we rely on renewable energy sources more than ever. The political increased demand for renewables, leads to uncertainty in our electric grids. By extensive measuring and monitoring, our grid will be more reliable, since grid balancing is made an easier task to comprehend. METHODS A literature research of the aspects concerning grid balancing has been made as part of the B.Sc. course “Power technology – economy, politics and technology”. Additional knowledge has been obtained by visiting power plants, the advocacy group “DANSK ENERGI” and the company energinet.dk, who are responsible for securing the Danish electric and gas supply. As part of the B.Sc. project on fourth semester, we have investigated the feasibility of constructing the energy meter devices. By using the deductive scientific approach, we have succeeded in design the required electrical circuits. TECHNICAL SPECIFICATION The energy meter is able to measure on 3 phases. As it is right now, it can deal with (230 V + 10%) and 20 A. A microcontroller is built into the device, and it is capable of calculating the power and phase changes. COMMUNICATION POSTER CONCEPT BACHELOR LEVEL COURSE / PROJECT
Grøn Dyst 2016
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