- By:
- Ferrari Maglia, Maximiliano F; Piesciorovsky, Emilio C; Hambrick, Joshua C; Smith, Travis M
- Page Number:
- 1-5
- Book Title:
- 2019 North American Power Symposium (NAPS)
- Publication Date:
- November 9, 2023
- Conference Name:
- 51st North American Power Symposium (NAPS)
- Conference Location:
- Wichita, Kansas, United States of America
- Conference Sponsor:
- IEEE
- View DOI Listing:
- https://doi.org/10.1109/NAPS46351.2019.9000320
Abstract
This paper presents a prototype of a simple and cost-effective design using a high-power monolithic power amplifier that allows the relay in-the-loop connectivity for protection and control applications using a real-time simulator. This low-cost amplifier interface increases the number of protective relays in-the-loop connected with the real-time simulator, expanding the scalability of protection devices that could be tested. The amplifier control design was developed in abc coordinates and utilizes integral and proportional-resonant controllers to provide a good tracking of both the fundamental component as the dc component that might be present during fault conditions. To validate the prototype, the current signals and tripping time of a relay interfaced with the current amplifier were compared against a reference relay connected to the low-voltage interface. Both protective relays were set with a U3 Very Inverse time overcurrent curve. The experimental results exhibited similar behaviors for the breaker currents, validating the amplifier interface prototype.
