Flexible Power Regulation Of Hvdc Light System

Abstract

With the advanced technology in power electronic, high voltage light transmission system based on voltage-source using Insulated gate bipolar transistor has been increased rapidly in renewable and electric power system applications. In this work, focuses on the analysis of power control in high voltage light transmission system using decoupled direct and quadrature vector control approaches. In this paper presents steady-state and transient models of a light high voltage transmission system in a direct and quadrature reference frame. The steady-state characteristics of high voltage light transmission system can be studied from steady-state model under the decoupled d-q vector control strategy. Three case studies are implemented with different real, reactive powers and direct link voltage. The high voltage light direct current transmission system provides independent power flow control at both rectifier station and inverter station with zero steady state error, less transient behavior and peak over shoot is also within the acceptable limit. The quality of grid current is good at both stations.