Research project
Background
A new measurement principle based on GPS satellite signals facilitates precise, synchronised measurements of amplitude and phase in the power network. Consequently, it has now become possible to determine phase differences between the voltage points in the network.
This measurement principle opens up a number of attractive opportunities, eg online supervision of the transmission network, warning of critical operation situations (that may lead to voltage collapse), verification of static and dynamic calculation models. It is necessary to research in and develop both the measurement methods and application possibilities.
DTU Electrical Engineering researchers have developed measurement equipment, Phasor Measurement Units (PMUs), based on the above measurement principle:
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to acquire experience in the measurement method and the measurement results generated |
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to utilise the results to gain new knowledge about the network and its dynamics |
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to apply the measurements for verification of measurement models and as online operation support in control rooms |
Four PMUs developed by DTU Electrical Engineering have been installed in the network on Zealand. Based on DTU Electrical Engineering’s technical and scientific competences, Energinet.dk and DTU Electrical Engineering will cooperate on a measurement system for Jutland and Funen. The system is based on the commercially available PMUs including the development of a method for estimation of short-circuit power. Energinet.dk will establish four PMUs connected to 400 kV busbars in Kassø, Tjele, Vester Hassing and Audorf in Germany near Hamburg.
Objectives
Energinet.dk and DTU Electrical Engineering will:
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analyse and evaluate data collected through the four installed PMUs |
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develop and test methods for the estimation of short-circuit effect in the transmission system |
Contact
Arne Hejde Nielsen