基于数字孪生的变电设备运维系统及其构建

针对变电设备周期状态管控难、运检效率低等问题，基于数字孪生理论，构建基于真实变电设备运维的数字化模型及系统。首先，在信息层建立能反映变电设备换流变、调相机、GIS（Gas Insulated Substation）这3类设备真实状态的数字孪生体；其次，基于换流变、调相机、GIS历史大数据，通过数字孪生体的变电站设备进行统计分析，并根据采集的实时数据、运维数据来预测变电站设备下一时刻的状态，使变电设备实现实际变电站内物理层与信息层数据的融合；最后，以变电站设备运维为对象，采用信息物理融合系统进行运维数据的集成和同步，形成最终变电设备运维数字孪生框架系统。相关研究表明，运用数字孪生技术可以对变电设备运维系统运行效率的提升和对变电站整体智能化提供强有力的技术支撑。

Substation Equipment Operation and Maintenance System and Its Construction Based on Digital Twin

In view of the problems of difficult periodic state control and low operation and inspection efficiency of substation equipment,based on the digital twin theory,a digital model and system based on the operation and and maintenance of real substation equipment is constructed.Firstly,the digital twins,which can reflect the real state of three kinds of equipment,namely converter transformer,condenser and GIS,are set up on the information layer.Secondly,the substation equipment of digital twins is analyzed with the historical big data of converter transformer,condenser and GIS,and then the next state of the substation state is predicted according to the collected state data,operation and inspection data of substation for realizing the data fusion of the physical layer and information layer in the actual substation of substation equipment.Lastly,the substation equipment operation and maintenance are considered as the experimental objects,the embedded information and physical fusion system is used to integrate and synchronize the operation and inspection data of substation equipment,forming the final digital twin framework system of substation equipment operation and inspection.Research shows that digital twin technology can improve the intelligent degree of substation equipment operation and inspection,and provide theoretical support for future substation construction.