A Practical Method to Represent Distance Protection Relays in Transient Stability Simulations of Lines Connecting Inverter-Based Resources

In this paper, it is proposed the use of a method for accurately representing distance protective relays models in stability simulations of power systems with inverter-based resources (IBR). Typical distance relays may fail to protect lines with IBRs due to the response of the converters during a fault. Consequently, different schemes have been proposed in the literature to improve the distance relays performance in the presence of IBRs and they should be properly represented in stability simulations. Considering the difficulty in modeling these unconventional protection schemes in stability software programs, this paper combines the use of a stability software and a short-circuit program to accurately represent the distance protection model in stability simulations. Simulations using a power system with a high wind power share are used to validate the method.