基于三维GIS的电网视频监控系统

电网视频监控系统是智能电网的一个重要组成部分,系统将三维GIS与视频监控进行集成,通过三维GIS显示监控点空间布局的功能,实现了以电网设备为中心的监控格局,增强了监控的针对性,利用摄像机预置位功能,简化了操作,节约了设备。以三维GIS为背景进行监控,并将三维视野、视角与摄像机预置位双向联动,使监控与环境融为一体,利用最佳路径分析,实现应急处理辅助决策和三维模拟演练。系统主要由前端系统、监控平台、客户端组成。监控平台分为三维GIS平台和视频平台,三维GIS平台通过组件调用的方式为视频平台提供三维GIS服务。系统使用了多种数据组织与空间索引优化技术、用Oracle数据库集成与管理多源数据、采用多级及分块处理技术处理三维数据、用基于SIP协议的信令软交换技术管理视频数据,以组件技术实现集成。以输电线路过江大跨越铁塔的视频监控为例,说明了该系统的建设和使用情况。

Research on 3D GIS-based grid video surveillance system

Grid video surveillance system is an important part of smart grid.3D GIS-based grid video surveillance system combines 3D GIS technology and video monitoring technology,displays control points by 3D GIS spatial layout,and concentrates on the grid equipment monitoring.Operation steps and monitor equipment are decreased by using camera preset positions.With 3D GIS as the monitoring background,the bidirectional interaction among 3D vision,perspectives and camera preset location can be used for emergency management decision support and 3D simulation exercises by applying best path analysis method.The system is made up of station system,monitoring platform and client.Monitoring platform is composed of 3D GIS and video platform.3D GIS platform provides 3D GIS service to video platform by component invocation.Multiple data organization and spatial index optimization techniques are used in the system.Oracle database is selected to integrate and manage multi-source data.Multistage and piecemeal processing technology is applied to process three dimensional data.Signal softswitch technology based on SIP protocol is adopted to manage video data.Video monitoring for long span transmission tower is taken as the example for explaining the system construction and usage conditions.