Coordinated Control of Multiple HVDC links using backstepping

Abstract

This article regards a power system containing multiple High Voltage Direct Current (HVDC) links. The topic is to exploit the HVDC lines’ ability to control the power supplied by them to increase the stability of the system. The nonlinear controller-design method backstepping is applied to design a controller for the direct current (DC) through each HVDC link. The simulation results show that the controller increases both transient stability and damping when some non-permanent errors are imposed on the system.