Training on three-phase system measurements by advanced technologies

Training on measurements to determine the characteristics of the three-wires three-phase electrical system is very useful for a deep knowledge of the various theoretical aspects, in the different load conditions, in particular, for balanced as well as unbalanced loads. The use of advanced technologies are suitable to obtain many advantages: the values of the various parameters can be detected and/or computed, presented on the user friendly interface and stored in a file. By using advanced technologies a laboratory session for measurements on three-phase systems has been realised. A user-friendly virtual instrument enables the student attending an electric measurement course (or any other operator) choosing the experiment to perform. The software that has been realised for this work consists of a virtual instrument, implemented in the LabVIEW/spl trade/ environment: it enables the student performing the management of the experiment. A digital acquisition board installed in the PC and software managed acquires the values of the voltages and the currents used by the software, which computes the active power and the reactive power.