Abstract: Due to the shortage of resources on the lightweight satellite platform,in order to improve the utilization of resources on the satellite,and to meet the requirements of mass,volume，function and other aspects,an integrated design of electrical system based on random access TT&C is proposed.Each function is modularized,and each function board is reintegrated in the satellite cabin for a chassis configuration.Standardized bus is realized through systemic information interaction.Meanwhile,the random access TT&C function is added in the cabinet,which reduces the complexity of measurement and control function design and improves the reliability of measurement and control while realizing the electrical integration design.

Key words: Random access TT&, C, Lightweight, Satellite platform, Electrical system integration