The research aims to effectively monitor the state of complex industrial equipment in real time, diagnose the internal Partial Discharge (PD) pattern of Gas Insulated Metal Enclosed Switchgear (GIS), implement effective health management, and change the traditional model optimization route of increasing training time in exchange for performance improvement. This paper studies the complex equipment-oriented Health Management System (HMS) based on Internet of Things (IoT) technology and Transfer Learning. Firstly, the principles of Transfer Learning and Deep Learning (DL) technology are introduced. Secondly, the requirements of GIS internal status recognition and management are studied. Furthermore, a GIS-oriented HMS based on Transfer Learning-optimized Convolutional Neural Networks (CNN) is proposed, and the training dataset is constructed. Finally, the proposed model is tested. The results show that the complex equipment-oriented HMS based on IoT technology, CNN, and Transfer Learning can detect the internal status of GIS in real time. Compared with the traditional DL algorithm and expert system, the proposed model has a shorter training time of only 16min, faster convergence speed, high testing recognition rate, and over 96% recognition rate. Compared with other mainstream algorithms, it has higher identification, the storage parameter volume is 408, and the storage space is 12.8MB. Moreover, the proposed Transfer Learning-optimized CNN model can accurately detect the status of GIS, identify abnormal statuses, and help prolong the service life of GIS. The proposed complex equipment-oriented HMS contributes to the intelligent manufacturing industry and provides a new direction for applying emerging Computer Technology in the intelligent industry.INDEX TERMS Internet of Things, convolutional neural network, GIS, status recognition, equipment health management.
I. INTRODUCTIONChinese continuous industrialization has gradually entered the era of ''industry 4.0'', which helps to popularize industrial reform, thus affecting all walks of life through advanced technologies, such as Information Technology (IT). As a result, the manufacturing industry set off a new round of revolution towards intelligent manufacturing, and intelligent industrial equipment sees extensive application [1], [2]. In particular, Gas-Insulated Metal Closed Switchgear (GIS), [3] because of its unique advantages, such as small footprint, high reliability, and little electromagnetic contamination is widely used in modern power systems. However, due to the limited production, transmission, and installation conditions, GIS will haveThe associate editor coordinating the review of this manuscript and approving it for publication was Porfirio Tramontana .