Modeling and simulation of current source converter for proposed India-Sri Lanka HVDC interconnection

The proposed 500 MW interconnection is the first DC power transmission link that is planning to connect in between Sri Lankan and Indian AC transmission networks. Proposed AC-DC system integration should determine the asymptotic stability of transmission network in both countries. Reliability can be improved by properly selecting system configurations. Properly selected DC & AC system parameters determine the stable performance at steady state and at perturbed conditions. This paper presents the modelling analysis of proposed HVDC interconnection for selected physical configurations. The interconnection was modelled using PSCAD/EMTDC software and simulated under the steady state conditions and perturbed conditions. The analytical results were verified using time domain simulations.