In order to solve the problems of large rendering load and low frame rate caused by the large screen of the power system five-sided LED-CAVE immersive virtual simulation platform, the article proposes a 1+N cluster rendering synchronization for the power system five-sided LED-CAVE Display management system. Configure the five-sided LED-CAVE with 1+N high-performance graphics rendering workstations and synchronous display cards according to the size and resolution of each screen. Through the synchronous rendering display system and 3D optical tracking and positioning system, achieve the effect that 5 screens refresh the stereo display simultaneously. This method improves the efficiency and immersive experience of power system virtual reality simulation rendering.