In this paper, in the planning stage of BIPVT building, the influence of light changes on the temperature of PV panels is considered, and the maximum light radiation of PV panels with different tilt angles is set to determine the optimal installation tilt angle. The photovoltaic part, light part, and photovoltaic photothermal integrated water circulation system are designed in stages. Introduce IoT technology into the BIPVT building, connect the BIPVT building to the Home Assistant system, and design the water circulation control system, intelligent control and remote control, NFC automation control, voice control and other control methods. Considering that the long-term operation of the distribution network of the building system leads to the heating of wires and losses, the Kruskal algorithm is used to solve the mathematical model with the minimization of line losses as the objective function and the improvement of voltage quality as the goal. In the empirical analysis, after the reconfiguration of the distribution network by Kruskal algorithm, the node voltage is increased by 1.25% and the loss is reduced by 15.30%, which proves that the Kruskal algorithm can effectively reduce the loss of the distribution network of the building system and improve the node voltage.In the characterization and testing of the BIPV/T building intelligent system, it is found that the BIPV/T building intelligent system based on the Internet of Things (IoT) is able to effectively improve the indoor thermal environment.
