Journal of Current Trends in Electrical Engineering ISSN: 3107-4375 (Online)

Authors: J.Priyanka, Dr. M. Sreelatha

Abstract: High Voltage Direct Current Transmission (HVDC) is thought to be a superior choice for long-distance transfers in bulk. The rising usage of HVDC is due to its benefits over HVAC systems, particularly its fault stability. A better alternative is to use Voltage Source Controlled– HVDC as one of the infeeds for Multi-Infeed HVDC (MIDC or MI-HVDC) systems. The VSC converter's key benefit is its variable power regulation, which improves the stability of MIDC systems. During faults, the behaviour of an HVDC system is compared to that of an HVAC system in this research. A hybrid HVDC system with an LCC as the rectifier and a VSC converter as the inverter is presented. It is said to be ideal for MIDC systems, particularly for powering a weak AC system. In MATLAB/SIMULINK, the performance of the system under steady- state and transient situations is investigated for all suggested topologies, including HVDC, HVAC, and Hybrid HVDC. A series of simulated case studies are used to assess all of the proposed control measures.

Keywords: HVAC system, HVDC system, MIDC systems, VSC converter, Transmisison