配电网自动化终端自适应交互系统研究

为了清晰感知配电网自动化终端状态，设计基于虚拟现实技术的配电网自动化终端自适应交互系统。系统通信层应用GPRS无线通信技术，将存储于数据层多种数据库中的数据传输至处理层，处理层利用接收到的数据，同时使用几何、物理和行为3种建模方式，通过构建环境模型、搭建终端三维虚拟场景、引入控制逻辑3步，建立配电网终端的三维模型，并通过颜色线性插值法，动态渲染三维模型，提升模型的颜色渐变效果；交互层利用渲染后三维模型完成场景漫游、场景导航、设施定位等多种功能，并通过界面层完成三维场景展示，实现自适应交互。实验结果表明，该系统信息通信平均时延及丢帧率较低；颜色渲染后，能准确描述终端结构特征，颜色设置与真实情况吻合，立体化效果较好；三维场景交互漫游可完整复刻并展示真实电厂场景，且视野灵活，营造身临其境之感，表现出良好交互性。

Research on adaptive interactive system of distribution network automation terminal

In order to clearly perceive the status of the distribution network automation terminal，an adaptive interactive system of the distribution network automation terminal based on virtual reality technology is designed.The system communication layer uses GPRS wireless communication technology to transfer data stored in various databases in the data layer to the processing layer.The processing layer uses the received data and uses three modeling methods of geometry，physics and behavior at the same time，a 3D model of the distribution network terminal is established by building an environmental model,building a terminal 3D virtual scene,and introducing control logic in three steps.And through color linear interpolation method,dynamic rendering 3D models,color gradient effect of the model is improved.The interactive layer uses the rendered 3D model to complete the scene.There are multiple functions such as roaming，scene navigation，facility positioning and so on.Through the interface layer,3D scene display is completed,which can realize adaptive interaction.The experimental results show that the average delay and frame loss rate of the information communication of the system is low；after the color rendering，it can accurately describe the structural characteristics of the terminal，the color settings are consistent with the real situation，and the three-dimensional effect is good；the interactive roaming of the three-dimensional scene can be completely reproduced and show the real power plant scene，and the vision is flexible，creating an immersive feeling，showing good interactivity.