Hybrid simulation platform for VSC-HVDC-assisted large-scale system restoration studies

Several works have studied the process of system restoration using Voltage Source Converter-based High Voltage Direct Current (VSC-HVDC) links and shown its effectiveness through simulations performed using detailed switched models in software like EMTDC/PSCAD. Unfortunately, studying restoration of large power systems using such detailed models are computationally prohibitive. This paper proposes a hybrid simulation framework for power system restoration, which can represent a significant portion of the model in a phasor framework and co-simulate that with a detailed model of a smaller portion containing VSC-HVDC. To that end, a software called ETRANPLUS is used to interface the phasor model in PSSE software with the detailed model in EMTDC/PSCAD.