适用于智能变电站的虚拟二次回路在线监测系统设计与实现研究

Design and implementation of virtual secondary circuit online monitoring system for intelligent substation

由于传统适用于智能变电站的虚拟二次回路在线监测系统,在进行虚拟二次回路在线监测时,光纤链路可视化程度低,无法实现在线监测。为此,设计适用于智能变电站的虚拟二次回路在线监测系统,并进行实现研究。在原有系统硬件基础上,选用型号AMS20192410迷你震动监测仪,将冲击脉冲HD通过LED背光显示,从而优化硬件性能;通过数据采集单元采集虚拟二次回路在线监测数据,SCD管理单元将虚拟二次回路在线监测数据进行上传与下载,进行虚拟二次回路数据可视化及对比,利用智能变电站SCD数据校验,完成CRC动态校核,并实现了SCD的文件比对,最后采用模糊综合评价方法来建立二次设备故障告警与诊断仿真模型加以验证。实验结果表明,设计的监测系统监测图像清晰度最高可达81.89%,对照组为60.41%,设计系统可实现对虚拟二次回路精准在线监测。

Due to the traditional virtual secondary circuit on-line monitoring system is suitable for intelligent substation,when the virtual secondary circuit on-line monitoring is carried out,the degree of optical fiber link visualization is low,and it is unable to realize on-line monitoring.Therefore,the virtual secondary circuit on-line monitoring system for intelligent substation is designed and implemented.Based on the original system hardware,AMS 20192410 Mini vibration monitor is selected to display the impact pulse HD through LED backlight,so as to optimize the hardware performance;the virtual secondary circuit online monitoring data is collected through the data acquisition unit,and the SCD management unit uploads and downloads the virtual secondary circuit online monitoring data,so as to visualize and compare the virtual secondary circuit data Using SCD data verification of intelligent substation,CRC dynamic verification is completed,and SCD file comparison is realized.Finally,fuzzy comprehensive evaluation method is used to establish secondary equipment fault alarm and diagnosis simulation model for verification.The experimental results show that the monitoring image clarity of the designed monitoring system is up to 81.89%,and that of the control group is 60.41%.The designed system can realize accurate online monitoring of the virtual secondary circuit.