The value and development of relay protection technology in modern power systems

With the large-scale integration of renewable energy into modern power systems, relay protection technologies are encountering both challenges and opportunities. This paper reviews key research findings from various authors regarding critical relay protection technologies, elucidates their vital roles and development trends in renewable energy-integrated power systems, and analyzes technical challenges and breakthroughs in novel protection principles and equipment development. Furthermore, future research directions are discussed. The study aims to provide an in-depth exploration of the value of relay protection technologies in modern power systems and to offer references for related research and practical applications.