University of Twente Student Theses


Designing a wireless node-based energy meter to measure both real and reactive power

Engelgeer, Timo (2017) Designing a wireless node-based energy meter to measure both real and reactive power.

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Abstract:At the energy group of CEAS at University of Twente they research energy management. For efficient use of energy it is not only important to just use energy efficient devices but also how you use those devices. Among other things a major research area of the energy group is time-shifting of the energy usage to reduce the peak power in the grid. For this research area is useful to not only know the static loads but also the real time load. This way the system can make real time decisions and compensate for peak loads. The currently used meter from Plugwise and other commercial alternatives only measure the real power a device uses but ignore the apparent and reactive power. Because the reactive power is just transported back and forth between the device and the source it causes an extra current which is transported twice. So although the reactive power does not cause power consumption in a device it does needs to be transported over through the grid and cause extra losses in the transport of the power. For power efficiency it is useful to also be able to measure this reactive power. This is explained in more detail in the chapter Theory. The situation described above illustrates why the energy group is interested in a wireless energy meter that can measure both real and reactive (or apparent) power. The main objective of this bachelor thesis is therefor: “Design a wireless energy meter which can measure real power, reactive power and voltage.” At the start the requirements were:  Measures active and reactive power,  Measure voltage,  Wireless communication,  Able to use more than one wireless meter,  Updates every second or at significant changes. These objectives are still pretty broad so they need to be specified into more detail. This is discussed in more detail in the chapter Design under Design requirements.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology, 54 computer science
Programme:Electrical Engineering MSc (60353)
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