In order to improve the balance of social welfare given by real-time pricing of smart grid, a modeling method to pay more attention to balance of revenues is provided. According to present operating mechanism of electric system, including power plant, grid company and customers, an optimal real-time pricing multi-layers model is founded to improve the revenues of grid company. Moreover, comparative analysis is given between our model and social welfare maximization model. The results of simulation show that the proposed model is better to balance the revenues among all actors. The revenues of grid company are increased significantly and loads in every period are significantly decreased, which shows the model is effective. This work is supported by National Natural Science Foundation of China (No. 11171221 and No. 71401106) and IBM Shared University Research (SUR).