System integration and software platform engineering implementation of digital twin model for ultra-high-voltage converter valve side bushing

Compared with simulation technology, the prominent feature of digital twin technology is its complex interaction ability with the external information, which enables the digital twin function of the physical objects through complex interaction. Therefore, a complete digital twin system is formed, and the digital twin model can truly and effectively play its role. To achieve this, it is necessary to establish data interfaces that effectively connect with external information, physical field calculations, the visual displays, etc., to realize the system integration of digital twin models and verify their engineering feasibility. This article analyzes the functional requirements of the system integration, designs its functional framework, constructs functional modules of physical hardware layer, twin model layer, and human-computer interaction layer, and realizes the integration of valve side bushing digital twin model system with data exchange capability, data transmission capability, and coordination between various functional modules. Among generated parameters, E-field strength inside 220kV reduced ratio bushing is controlled within 3kV/mm, and the composite insulator umbrella skirt is installed outside the core. Total length of the bushing is 2465mm, the length of the bushing tail is 810mm, and the length of the hollow composite insulator is 1250mm.