As for such demand as model construction

information interaction and dynamic simulation of digital twinning of high voltage equipment

the design and application technology of virtual sensor are analyzed. Virtual sensor is a computer simulation system with sensor behavior

which can decouple complex digital twin system based on function

structure and service requirements as well as reduce the complexity of engineering application. In this paper

the design requirements of the virtual sensor applied to the digital twin engineering of high voltage equipment are proposed

the design and application methods of the virtual sensor for observation

the virtual sensor for parameter calculation and the virtual sensor for prediction and alarm are given. The study results show that the virtual sensor has such advantages as componentization

service

easy reconfiguration and evolution

the function can be used as a digital twin cell level component design method so to solve the difficulties in data acquisition and fusion

the complicated coupling of simulation and prediction algorithms in current engineering applications

support the applications of comprehensive equipment state perception

accurate trend prediction

early risk warning and equipment life-cycle lean management.