Pre-Fault Detection: Advanced algorithms detect anomalies, such as frequency deviations or voltage unbalances, before failures occur. Digital Twins: Virtual replicas simulate real-time grid operations, accelerating engineering design and testing workflows. It is reshaping traditional grid architecture and making way for more flexible, efficient and. Relay protection technology plays a vital role in fault detection, isolation, and recovery, evolving with intelligent algorithms, digital equipment, and automated coordination to enhance grid reliability. These clean energy sources, connected through inverters and flexible transmission systems, are transforming traditional grids based on synchronous generators into more flexibl cant challenges to system stability. Nowhere is that clearer than in the challenge to. The protection system is crucial for grid stability and safeguarding essential components, including generators, transformers, transmission systems, and power connections. Three-Phase Relay Test Set: Facilitates testing under dynamic and varied conditions. Much like how spreadsheet software automated. This paper presents a chip-based relay protection technology based on system-on-chip (SoC), which is described from four aspects, namely, the architectural design of the relay protection SoC, software and hardware cooperative relay protection based on the SoC IP core, experimental verification, and.