Abstract: To update and optimize the maintenance and management mode of relay protection equipment in the power system, and improve the reliability and maintenance efficiency of the power system, this article analyzes the limitations of the existing maintenance process of relay protection equipment; and proposes the innovative models based on condition based maintenance(CBM), predictive maintenance(PdM), and intelligent maintenance (IM). The research results indicate that the proposed innovative model can effectively improve the stability and economy of the power system, providing new solutions for the stable operation of the power system.