HVDC Transmission Line Models for Steady-State and Transients Analysis in SIMULINK Environment

Transmission lines are a vital link in HVDC transmission systems. Transients originated in the lines themselves (e.g., short circuits, lightning) or originated in the substation equipments (e.g., rectifier, inverter) propagate from one part of the HVDC system to another through the transmission lines. This paper presents a summary of the main transmission line models currently in use for steady-state and transients simulations on an HVDC link. Simulations have been performed comparing frequency and time domains performance of distributed parameters line model and (π) sections line model. The limitations of these models are explained. General guidelines are suggested regarding the area of applicability of the models in SIMULINK.