The basic logical structure and function of the remote data center system of photovoltaic power station for the golden-sun demonstration project is described. The remote data center system is used to monitor the operation conditions of the photovoltaic power station and collect data for analysis， based on which， a discussion is made of the selection of the communication mode and communication protocol as well as the design of the data model and application function. At present， the data center is already in operation in the State Grid Experimental Verification Center.