Transmission lines: overhead power lines are mainly used to transmit electrical energy from the power stations to the consumers. However, in densely populated areas the power can only be supplied via cables. Various voltage levels are used for transmitting power; the levels are determined by the amount of power and the distance; the higher the transmission voltages, the lower the currents as well as the transmission losses. However, it must also be considered that network investment costs increase with the voltage. Busbars, disconnectors and power circuit breakers: they are the main componentsfound in a switching station
used for power distribution.
Laboratory description
In this laboratory the basic circuits of power engineering, series and parallel connections of operating equipment (lines, transformers) as well as circuits involving the conversion of delta connections to star connections and vice versa, are analysed. Our system, composed of a modular configuration, allows the student to identify immediately the main components. Three-phase transformers, transmission lines and bus bar are the main subjects of study. The
entire lab can be divided in three different configurations, related to the three subjects of study, in order to perform a didactic experience focussed on that specific field.
