The transmission of network data through Ethernet architecture integrated information share the information in smart substation, and the timely and effective data interaction plays an important part in the protection of the normal operation of smart substation. In view of the deficiency of the existing data priority scheduling strategy, an improvement of the traditional weighted polling algorithm is proposed, which is applied in the smart substation integrated data scheduling. Taking the typical intelligent substation of 220 kV for example, this paper establishes the communication network in OPNET for instance simulation model. Simulation results show the improved weighted round robin scheduling strategy can provide a better service for the high real-time request message in emergency circumstances. This work is supported by National Natural Science Foundation of China (No. 51607110) and Natural Science Foundation of Shanghai (No. 14ZR1417600).