机房配电柜微环境监控系统的研究
发布时间：2019-02-11 14:20
【摘要】：目前,国家电网在机房安全可靠性建设中,安全监测的对象多是机房内的大环境数据,很少对配电柜内微环境数据进行监测。一旦微环境内硬件设施出现故障,导致电力系统断电,很难在第一时间锁定故障源,且需要一定时间进行人工排查。为解决这一问题,研究了一套针对机房配电柜微环境的监控系统。监控系统终端硬件控制核心采用STM32微控制器,控制RN8302B专用电能计量芯片,采集配电柜进线与出线侧的三相电压、电流、有功功率等有效值参数;控制 DHT22、LM94022、MQ-2、SW-18015、YL-56、YL-38、HC-SR501、OV7725、MFRC522等传感器,监测柜内环境温湿度、开关温度、烟雾浓度、柜体震动、噪声频率、火源有无、动物入侵、故障图像以及门禁卡号等数据指标,监测数据通过以太网传输至远方监控室。当监测指标出现异常情况时,监控系统自动锁定故障源,发出异常提示信息,进行相应的控制操作。设计为STM32微控制器移植uC/OS-III实时操作系统,使多个任务有序、高效地轮流占用CPU。监控终端借助人机友好的迪文显示屏现场监控。上位机采用“架构双重化+手机APP”的设计方案,在uC/OS-III系统中移植LwIP协议栈,使监控终端成为独立的B/S架构下的WEB服务器,工作人员可以借助浏览器或者手机APP远程灵活监控;在监控室计算机上设计有C/S架构的DELPHI上位机监控界面。实验室内样机制作并试验验证,该样机电能校表后的电压、电流、有功功率有效值测量精度均达到0.5s;各类内环境传感器测量范围与精度满足GB7251.1-2013的要求,其中开关设备温度测量灵敏度可调;输入异常的电能质量数据时,监控终端显示界面自动跟踪故障数据并控制继电开关自动切除故障或转换到备用回路;模拟柜内烟雾浓度超过阈值时,排风扇PID调速排除烟雾;每当故障发生时,工作人员都会收到监控终端自动发出的短信提示,查验SD卡中的图文记录,验证故障类型。样机实际试验结果与拟监测指标、预实现功能基本吻合。
[Abstract]:At present, in the construction of the safety and reliability of the computer room in the State Grid, the objects of safety monitoring are mostly the large environmental data in the computer room, and the micro-environment data in the distribution cabinet are seldom monitored. Once the hardware in the microenvironment fails, it is difficult to lock the fault source in the first time, and it needs a certain time to check manually. In order to solve this problem, a monitoring system for microenvironment of distribution cabinet in computer room is studied. The terminal hardware control core of the monitoring system adopts STM32 microcontroller, controls the RN8302B special electric energy metering chip, collects the RMS parameters such as three-phase voltage, current, active power and so on; Control DHT22,LM94022,MQ-2,SW-18015,YL-56,YL-38,HC-SR501,OV7725,MFRC522 sensors, monitor temperature and humidity in the cabinet, switch temperature, smoke concentration, cabinet vibration, noise frequency, fire source, animal invasion, Fault image and access card number and other data indicators, monitoring data transmitted through Ethernet to the remote monitoring room. When the monitoring index is abnormal, the monitoring system automatically locks the fault source, sends out the abnormal prompt information, and carries on the corresponding control operation. Designed to transplant uC/OS-III real-time operating system for STM32 microcontroller, making multiple tasks orderly and efficiently occupying CPU. in turn Monitoring terminal with the help of man-machine friendly Diwen display screen monitoring. The host computer adopts the design scheme of "dual architecture mobile phone APP", and the LwIP protocol stack is transplanted into the uC/OS-III system, which makes the monitoring terminal become the independent WEB server under the B / S architecture. Staff can use browser or mobile phone APP remote flexible monitoring; The DELPHI monitor interface with C / S architecture is designed on the monitor room computer. The prototype is manufactured and tested in the laboratory. The measuring accuracy of the voltage, current and active power RMS of the prototype is 0.5 s. The measuring range and precision of all kinds of inner environmental sensors meet the requirements of GB7251.1-2013, and the sensitivity of temperature measurement of switchgear can be adjusted. When the abnormal power quality data is input, the monitor terminal displays the interface to track the fault data automatically and controls the relay switch to automatically remove the fault or switch to the backup circuit, and when the smoke concentration in the simulation cabinet exceeds the threshold, the exhaust fan PID regulates the removal of the smoke. Every time the fault occurs, the staff will receive an automatic SMS prompt from the monitoring terminal, check the picture and text record in the SD card, and verify the fault type. The actual test results of the prototype are in good agreement with the monitoring index, and the pre-realization function is basically consistent.
【学位授予单位】：山东科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM642;TP277
本文编号：2419807
[Abstract]:At present, in the construction of the safety and reliability of the computer room in the State Grid, the objects of safety monitoring are mostly the large environmental data in the computer room, and the micro-environment data in the distribution cabinet are seldom monitored. Once the hardware in the microenvironment fails, it is difficult to lock the fault source in the first time, and it needs a certain time to check manually. In order to solve this problem, a monitoring system for microenvironment of distribution cabinet in computer room is studied. The terminal hardware control core of the monitoring system adopts STM32 microcontroller, controls the RN8302B special electric energy metering chip, collects the RMS parameters such as three-phase voltage, current, active power and so on; Control DHT22,LM94022,MQ-2,SW-18015,YL-56,YL-38,HC-SR501,OV7725,MFRC522 sensors, monitor temperature and humidity in the cabinet, switch temperature, smoke concentration, cabinet vibration, noise frequency, fire source, animal invasion, Fault image and access card number and other data indicators, monitoring data transmitted through Ethernet to the remote monitoring room. When the monitoring index is abnormal, the monitoring system automatically locks the fault source, sends out the abnormal prompt information, and carries on the corresponding control operation. Designed to transplant uC/OS-III real-time operating system for STM32 microcontroller, making multiple tasks orderly and efficiently occupying CPU. in turn Monitoring terminal with the help of man-machine friendly Diwen display screen monitoring. The host computer adopts the design scheme of "dual architecture mobile phone APP", and the LwIP protocol stack is transplanted into the uC/OS-III system, which makes the monitoring terminal become the independent WEB server under the B / S architecture. Staff can use browser or mobile phone APP remote flexible monitoring; The DELPHI monitor interface with C / S architecture is designed on the monitor room computer. The prototype is manufactured and tested in the laboratory. The measuring accuracy of the voltage, current and active power RMS of the prototype is 0.5 s. The measuring range and precision of all kinds of inner environmental sensors meet the requirements of GB7251.1-2013, and the sensitivity of temperature measurement of switchgear can be adjusted. When the abnormal power quality data is input, the monitor terminal displays the interface to track the fault data automatically and controls the relay switch to automatically remove the fault or switch to the backup circuit, and when the smoke concentration in the simulation cabinet exceeds the threshold, the exhaust fan PID regulates the removal of the smoke. Every time the fault occurs, the staff will receive an automatic SMS prompt from the monitoring terminal, check the picture and text record in the SD card, and verify the fault type. The actual test results of the prototype are in good agreement with the monitoring index, and the pre-realization function is basically consistent.
【学位授予单位】：山东科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM642;TP277
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