Microgrid Protection Schemes with Fuel Cell Integration: A Critical Review of Issues, Methodologies, and Future Trends

Abstract

Escalating energy demands and stringent climate constraints are fundamentally reshaping traditional power systems, driving the widespread adoption of microgrids. These decentralized networks offer enhanced resilience and efficiency, particularly when integrated with sustainable energy sources like Fuel Cells (FCs). As high-density power sources with low emissions, fuel cells are increasingly critical for stabilizing intermittent renewable generation and providing reliable backup power within the microgrid architecture. Despite their benefits, the integration of such distributed energy resources introduces distinct technical hurdles. This review outlines the key challenges and applications of modern microgrid technology as documented in current literature. A significant focus is placed on microgrid protection, providing a detailed analysis of schemes such as Overcurrent (OC) and Directional OC. The study evaluates how these protection methodologies—alongside advanced generation technologies like fuel cells—address specific operational obstacles to ensure reliable fault detection, power quality, and overall system stability.