Interconnection between two variant frequency systems using HVDC links

Energy is the basic necessity of the modern world and the consumption is increasing everywhere. Efficient energy supply system is the backbone for smooth development of a country which requires interconnection between different areas and countries and transmission of power over long distances. HVDC is one of the systems which can provide power efficiently and have many advantages technically, economically and environmentally over the HVAC. This is why when it comes to interconnection and transmission over long distances, HVDC would be the first to discuss and study. Although interconnecting different frequency AC networks is one of HVDC applications, nobody has studied because simply nobody faced it practically. Ongoing projects are coming soon to connect a 60 Hz network to different 50 Hz networks. In this paper, an interconnection between two variant frequency systems (50 Hz and 60 Hz) using HVDC links was simulated and studied using PSCAD Software.