Achieving seamless interoperability between equipment from different manufacturers while maintaining stability and efficiency adds further difficulty. The unique behaviour of DC systems under fault conditions demands innovative, scalable, and cost-effective protection strategies tailored to diverse scenarios.

CIRCE will enhance its protection system, previously validated in CIEMAT’s microgrid during the TIGON project, by integrating new protection and control algorithms in the form of microservices. These will support multi-terminal DC distribution and microgrids under various topologies (radial, ring, or mesh), increasing network flexibility and resilience. Validation will be conducted using a Real-Time Digital Simulator (RTDS) in a Hardware-in-the-Loop (HIL) setup, supported by a computational model for transient and long-term analysis, including fault detection, protection coordination, and stability.