韓團軍 尹繼武 張攀飛 鄭旭 盧超



摘 ?要: 針對傳統箱式變壓器環境監測系統線路復雜和實時性差等問題,提出一種基于TCP協議的自適應無線網絡箱式變壓器數據監測系統。該系統利用RS 485總線通過ModBus協議采集箱式變壓器內部多點溫度、濕度、油溫的環境參數和三相電壓電流、電能、功率因數、頻率等電力參數。MCU接收到數據后進行分析處理,將監測參數實時顯示在人機交互界面上,可以對突發情況進行預警及控制。同時這些數據通過可選擇的三種方式GPRS,WiFi或者以太網口發送至云端服務器,用戶可登錄服務器上位機,遠程監測箱式變壓器內部狀態。經過試驗測試,該系統可以正常監測箱式變壓器內部參數,極大地方便了工作人員的維護和檢修工作,提高了箱式變壓器的使用壽命。
關鍵詞: 箱式變壓器; 數據監測; 系統設計; 數據傳輸; 實時顯示; 遠程監測
中圖分類號: TN926?34; S275.6 ? ? ? ? ? ? ? ? 文獻標識碼: A ? ? ? ? ? ? ? ? ? ? ? 文章編號: 1004?373X(2020)12?0074?04
Abstract: As the traditional box?type transformer environmental monitoring system has complex circuit and poor real?time performance, an adaptive wireless network box?type transformer data monitoring system based on TCP protocol is proposed. The system uses the 485 bus to collect the environmental parameters of the multi?point temperature, humidity and oil temperature and the three?phase voltage, current, electric energy, power factor, frequency and other power parameters of the box?type transformer by means of the MODBUS protocol. After receiving the data, MCU can analyze and process it, display the monitoring parameters on the human?computer interface in real time, and can give early warning and control to emergencies. The data is sent to the cloud server by means of three selectable modes of GPRS, WIFI or Ethernet port. Users can log in to the server of the upper computer and remote monitor the internal state of the box?type transformer. The testing experiment results show that the system can normally monitor the internal parameters of the box?type transformer, which greatly facilitates the maintenance and overhaul of the staff and improves the service life of the box?type transformer.
Keywords: box?type transformer; data monitoring; system design; data transmission; real?time display; remote monitoring
0 ?引 ?言
隨著我國工業水平的發展和用電設施的建設,由于箱式變壓器可以縮短供電距離和增強總斷電壓的穩定性等特點,所以在電網改造中作用十分重要。傳統的箱式變壓器是一種將不同的電器設施用連接線的方式進行連接組合的電器設備,其缺點是變壓器較為分散、維護成本高、不能實時對其環境和參數進行監測,導致不能及時發現問題而產生重大安全事故[1?5]。本文提出一種智能箱式變壓器實時無線監控系統,該系統是將現有的物聯網技術、傳感器技術、控制技術應用于電氣設備中,系統利用RS 485總線通過ModBus協議采集箱式變壓器內部環境參數和電力參數。……