基于多信息融合的GIS状态预警系统设计

Design of GIS State Warning System Based on Multi Information Fusion

为提高特高压变电站智能化运维能力,提升气体绝缘金属封闭开关设备(GIS)运行安全性,设计开发了基于多信息融合的GIS状态预警系统。通过GIS设备故障特性分析和绝缘气体六氟化硫(SF6)在设备故障过程的特性改变,得到了GIS设备不同故障类型的监测机理;引入D-S多信息融合故障预警决策算法,实现了GIS设备故障在线检测、智能决策与自动分级报警。系统在特高压南阳站进行了应用实验,实验结果证明了该预警系统监测的准确性,实现了GIS设备的在线智能化监测功能,提升了变电站智能化运维能力。

In order to improve the intelligent operation and maintenance capabilities of ultra-high voltage substations and enhance the safety of gas insulated metal enclosed switchgear(GIS)operation,a GIS state warning system based on multi information fusion was designed and developed.Firstly,by analyzing the fault characteristics of GIS and the characteristic changes of insulation gas SF6 during the equipment fault process,the monitoring mechanisms of different types of faults in GIS were obtained;Then,the D-S multi information fusion fault warning decision algorithm was introduced to achieve online detection,intelligent decision-making,and automatic grading alarm of GIS faults.The application experiment of the system was carried out at ultra-high voltage Nanyang station,and the experimental results proved the accuracy of the monitoring of the early warning system,realized the online intelligent monitoring function of GIS,and improved the intelligent operation and maintenance capability of the substation.