Developing automated Hardware-In-the-Loop tests with RTDS for verifying the protective relay performance

摘要

This paper describes the steps for carrying out automated Hardware-In-the-Loop tests to protective relays with the real-time power system simulator RTDS. The main features with such tests are the performance verification of new protective relays, before their commissioning within the electrical substations, and the improvement of the power system reliability. A brief description of the software, hardware and applications of the RTDS simulator is made. A digital simulation model of a power network is proposed, as a benchmark case, to perform the Hardware-In-the-Loop tests with the distance relay SEL-421. Finally, a report is made to analyze the performance of the distance relay.