Cálculo de impedancia equivalente para la localización de fallas en sistemas transmisión HVDC mediante el control de conversores de potencia

Abstract

Due to the advancement of technology in semiconductor components and power electronics, HVDC transmission systems are a reliable alternative to electrical systems. Like AC systems, these are prone to atmospheric failures or poor coordination of protections, both the detection and location of them is of utmost importance to ensure continuity in the transport of energy. The research proposes to develop a method for locating faults in HVDC transmission systems based on the traveling wave with the obtaining of voltages and currents in the affected lines through simulation, thus achieving a difference or fluctuation in value of the equivalent impedance when it is in operation and when it is in failure. The importance of this method of detecting failures in DC is not to rely on telecommunications for HVDC networks. Additionally, the method proposes the measurement in case of ground current failures. By evaluating these three factors the fault will be located and its type will be identified. For modeling and simulation Simulink / MatLab was used.