Abstract:In order to solve the problem that the data collected by the field layer of the power equipment industry is too small, too complicated and “over-dirty”, the enterprise-level data islands and manufacturing data and the data of operation and maintenance are not effectively opened，this paper uses the "digital twin" technology to build an industrial Internet platform in the field of power equipment . The design cloud, production cloud, knowledge cloud, detection cloud and service cloud based on platform are importantly carried out，and they are explored and applied under the conditions of power equipment design, manufacturing and maintenance management. By developing and investigating smart appliances, the equipment automation, digitization and networking level have been improved, the bottleneck of insufficient connection of power equipment terminals has been eliminated, and the precipitation capability of mechanism model have been improved besides the data collection capability of equipment; By building the smart factories, the internal equipment and processes of the enterprise will be transferred to industrial internet , then an effective connection between operation and manufacturing will be established, linking the product data and the operation and maintenance data to achieve quality and efficiency. Through the asset management and operation and maintenance services of power equipment, we have partially opened up equipment, production lines, production and operation systems, obtained data, and created data-driven intelligent production capacity. Through the construction and application of the platform to the power equipment industry, on the one hand, we gained experience of reconstruction and optimization of manufacturing resources in the industry, On the other hand, it laid the technical foundation for the transformation of enterprise from traditional manufacturing enterprise to manufacturing service enterprise.