Currently, the power grid lacks effective measurement of distributed energy and its connected low-voltage distribution system, making it difficult to analyze the significant uncertainty brought by the large-scale integration of renewable energy in distribution network operation. The power internet of things technologies break through the bottlenecks of traditional measurement approaches. They are applied to the multi-stage coordinated operation of a renewable energy integrated distribution network and wide-area renewable energy accommodation. In the construction of the power internet of things, the procedure of renewable energy state perception, data collection and processing is stated. Then, with the perception information of the internet of things, the operation mode structure of the renewable energy integrated distribution network based on the power internet of things platform is established. It is established from the aspects of user side energy management, distributed energy clustered control, multi-time-scale distribution network optimal operation and integrated energy system operation. Finally, the expected profits of the power internet of things application in renewable energy integrated power systems are analyzed. This work is supported by the National Natural Science Foundation of China (No. 52077136).