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箱變光纖溫度在線監測系統

箱變光纖溫度在線監測系統可直接監測箱變低壓側斷路器觸頭、電纜接頭處等部位溫度,利用熒光光纖測溫探頭,感應箱變低壓側斷路器觸頭處、電纜接頭處溫度,可以直觀地監測和評估箱變的運行情況,提前發現觸頭或接頭處過熱問題,避免對箱變絕緣和壽命造成不利影響。

箱變光纖溫度在線監測系統一般由熒光光纖測溫傳感器、光纖測溫儀(顯示模塊)、光纜等組成,每臺箱變的測溫點數不少于6個,其中暫定為低壓側斷路器觸頭溫度(3點)、電纜接頭溫度(3點),最終測點由項目單位確定。可實時在線監測和故障報警,除可就地顯示報警信息外,還能通過RS485口傳至監控后臺,并能實現遠程監控。

?光纖測溫

箱變光纖溫度在線監測系統主要技術參數如下:

(1)溫度測量范圍:-20~+150℃;

(2)測溫精度:±1℃;

(3)接觸式測量方式,但不得影響箱變絕緣性能;熒光光纖傳感器通過工頻耐壓試驗, 20cm耐壓不小于80kV,并提供檢驗報告;

(4)系統不受箱變內電磁環境影響并提供相關電磁兼容試驗報告;

(5)能夠保存溫度數據和報警溫度時間等參數;

(6)探頭壽命不小于30年。

關鍵詞:
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