Abstract: The application of large capacity electrically driven compressor will cause significant changes in the power system of offshore platform. Based on a specific offshore project, we introduce the overall electrical system plan for the platform with electrically driven compressors, and point out the key technical problems that should be focused on to optimize the power system. In particular, simulation calculations are required to ensure the stability of power system. Results from the study will have some guidance and reference for similar projects in the future.