Reliability and economic study of multi-terminal HVDC with LCC & VSC converter for connecting remote renewable generators to the grid

This paper investigates reliability and economic challenges when large amounts of renewable generation are located long distances from load centers. Considering the distance, existing network, economics and controllability requirements, the optimum transmission system may be a multi-terminal HVDC with line commutated converter (LCC) and voltage source converter (VSC) stations. The LCC, VSC and multi-terminal HVDC system has been modeled and studied in PSS/E and MATPOWER software platform. The South East Australian test system has been simulated in OPF to investigate the integration of large scale geothermal power into the Australian National Electricity Market (NEM). The sensitivity of the simulated results to variations in generation capacity and system load have been assessed and provide the frontier of the reliability and cost-benefit analysis.