Abstract: Microsoft HoloLens is an augmented reality PC headset that brings high-definition 3D digital holograms to life in the real world, therefore, it is adopted as the platform to develop the substation operation training system based on the augmented reality technology. The main camera of HoloLens is used as the image acquisition equipment of the substation, and the identification methods of the local feature of equipment based on ASIFT, the artificial marker and the equipment label based on OCR are combined to realize the reliable identification of the substation equipment with different size and shape. The object equipment in the substation is accurately located and registered initially by the feature point recognition of artificial marker or equipment based on vision, and  the Anchor technology of HoloLens is used to realize fast tracking and registration of target devices. The learning, training and assessment environment of substation based on augmented reality is constructed, and demonstration and verification are carried out. By expanding the functions of the existing training system, this paper improves the practicability, interactivity and experience of the existing training system, and improves the training effect and efficiency.

Key words: augmented reality, HoloLens, substation, simulation training, target recognition technique, tracking and registration technique