【摘要】：目前,國(guó)家電網(wǎng)在機(jī)房安全可靠性建設(shè)中,安全監(jiān)測(cè)的對(duì)象多是機(jī)房?jī)?nèi)的大環(huán)境數(shù)據(jù),很少對(duì)配電柜內(nèi)微環(huán)境數(shù)據(jù)進(jìn)行監(jiān)測(cè)。一旦微環(huán)境內(nèi)硬件設(shè)施出現(xiàn)故障,導(dǎo)致電力系統(tǒng)斷電,很難在第一時(shí)間鎖定故障源,且需要一定時(shí)間進(jìn)行人工排查。為解決這一問(wèn)題,研究了一套針對(duì)機(jī)房配電柜微環(huán)境的監(jiān)控系統(tǒng)。監(jiān)控系統(tǒng)終端硬件控制核心采用STM32微控制器,控制RN8302B專用電能計(jì)量芯片,采集配電柜進(jìn)線與出線側(cè)的三相電壓、電流、有功功率等有效值參數(shù);控制 DHT22、LM94022、MQ-2、SW-18015、YL-56、YL-38、HC-SR501、OV7725、MFRC522等傳感器,監(jiān)測(cè)柜內(nèi)環(huán)境溫濕度、開(kāi)關(guān)溫度、煙霧濃度、柜體震動(dòng)、噪聲頻率、火源有無(wú)、動(dòng)物入侵、故障圖像以及門禁卡號(hào)等數(shù)據(jù)指標(biāo),監(jiān)測(cè)數(shù)據(jù)通過(guò)以太網(wǎng)傳輸至遠(yuǎn)方監(jiān)控室。當(dāng)監(jiān)測(cè)指標(biāo)出現(xiàn)異常情況時(shí),監(jiān)控系統(tǒng)自動(dòng)鎖定故障源,發(fā)出異常提示信息,進(jìn)行相應(yīng)的控制操作。設(shè)計(jì)為STM32微控制器移植uC/OS-III實(shí)時(shí)操作系統(tǒng),使多個(gè)任務(wù)有序、高效地輪流占用CPU。監(jiān)控終端借助人機(jī)友好的迪文顯示屏現(xiàn)場(chǎng)監(jiān)控。上位機(jī)采用“架構(gòu)雙重化+手機(jī)APP”的設(shè)計(jì)方案,在uC/OS-III系統(tǒng)中移植LwIP協(xié)議棧,使監(jiān)控終端成為獨(dú)立的B/S架構(gòu)下的WEB服務(wù)器,工作人員可以借助瀏覽器或者手機(jī)APP遠(yuǎn)程靈活監(jiān)控;在監(jiān)控室計(jì)算機(jī)上設(shè)計(jì)有C/S架構(gòu)的DELPHI上位機(jī)監(jiān)控界面。實(shí)驗(yàn)室內(nèi)樣機(jī)制作并試驗(yàn)驗(yàn)證,該樣機(jī)電能校表后的電壓、電流、有功功率有效值測(cè)量精度均達(dá)到0.5s;各類內(nèi)環(huán)境傳感器測(cè)量范圍與精度滿足GB7251.1-2013的要求,其中開(kāi)關(guān)設(shè)備溫度測(cè)量靈敏度可調(diào);輸入異常的電能質(zhì)量數(shù)據(jù)時(shí),監(jiān)控終端顯示界面自動(dòng)跟蹤故障數(shù)據(jù)并控制繼電開(kāi)關(guān)自動(dòng)切除故障或轉(zhuǎn)換到備用回路;模擬柜內(nèi)煙霧濃度超過(guò)閾值時(shí),排風(fēng)扇PID調(diào)速排除煙霧;每當(dāng)故障發(fā)生時(shí),工作人員都會(huì)收到監(jiān)控終端自動(dòng)發(fā)出的短信提示,查驗(yàn)SD卡中的圖文記錄,驗(yàn)證故障類型。樣機(jī)實(shí)際試驗(yàn)結(jié)果與擬監(jiān)測(cè)指標(biāo)、預(yù)實(shí)現(xiàn)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.
【學(xué)位授予單位】：山東科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM642;TP277

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本文編號(hào)：2419807