Scale model of a Very High Voltage alternating current Power Transmission Line integrated into a Smart Grid

This paper presents a self-designed simulator cabinet intended to analyse the electrical properties and various types of electrical faults in Very High Voltage AC Power Transmission Lines (400 kV) through a Low Voltage (400 V) Pi model. Three different lengths of aerial power line (46 km, 92 km and 138 km) are modelled and simulated by calculating appropriate current, admittance and impedance scale factors in order to retain the electrical power properties of the High Voltage line. The simulator cabinet developed allows users to apply operating procedures just as in a real-life substation and study the consequences of single-phase, two-phase and three-phase electrical faults. The device is part of an effective micro-grid model connected to a HV bus, making it a powerful tool for both research and educational purposes.