Simulation Study of a Multi Terminal HVDC Network

A simulation study on the feasibility and performance of a Multi-terminal High Voltage DC (HVDC) network is presented here consisting of four terminals representing four countries of Indian subcontinent i.e. Bangladesh, India, Nepal & Bhutan. The energy scenario of this region is very diverse comprising of significant energy generation potential on some places, while others with quite acute energy demand. Since there exists a mismatch between power generation capabilities and load requirements in various zones, a great opportunity lies for proper management of power. In this regard, a long distance power transmission network will enable the normalization of the electrical energy generation and requirement density to a large part. The purpose of the multi-terminal grid is to create a power sharing DC corridor where each of the four terminals can work as both transmitter and receiver of power. Each terminal will have a part of the total generation of the respective country connected to it to be shared through the MTDC grid. From our study, suitable values for firing angles and excitation angles are obtained for desired directed power flow with power factors remaining within satisfactory range.