An ANN based damping controller for VSC-HVDC System

Abstract

As the penetration of renewable energy increasing in power systems, the contribution of VSC-HVDC for system stability is highly expected. Due to the decoupling modulating of active and reactive power output, the influence of HVDC on the inter-area oscillation is widely studied. This paper proposes a new ANN (Artificial Neural Network) based control design scheme for VSC-HVDC systems to damp inter-area oscillations of power systems. The controller is integrated to the conventional vector control to enhance the damping of the inter-area oscillations. Simulation test in a two-area-four-machine interconnection power system is studied. The test result showed that the VSC-HVDC with proposed damping controller can enhance the system damping under various disturbances.