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       對電力設備進行必要監測，保證其穩定運行，對電力系統運行的可靠性、安全性具有重要意義。隨著在線監測技術不斷發展和成熟，以及在線監測技術近年來在我國電力系統的成功應用，狀態檢修替代定期檢修已被電力系統所接受和認同，成為設備檢修的必然趨勢。

長期(qi)以來，我國電(dian)力(li)系統對(dui)電(dian)力(li)設(she)(she)(she)(she)備(bei)(bei)執(zhi)行(xing)定期(qi)檢(jian)(jian)修(xiu)(xiu)制(zhi)度，即根據計劃的(de)時間周期(qi)對(dui)設(she)(she)(she)(she)備(bei)(bei)檢(jian)(jian)測(ce)和維護，這樣就存在檢(jian)(jian)修(xiu)(xiu)過度和檢(jian)(jian)修(xiu)(xiu)不足的(de)弊(bi)端。隨著電(dian)力(li)設(she)(she)(she)(she)備(bei)(bei)缺陷形式 發生新的(de)變化，對(dui)于局部放電(dian)的(de)在線(xian)監測(ce)、色譜、SF6氣體質量的(de)在線(xian)監測(ce)開始增多。國家電(dian)網(wang)公司明(ming)確提出，要從(cong)2010年(nian)起開始全(quan)面(mian)推廣實施設(she)(she)(she)(she)備(bei)(bei)狀態檢(jian)(jian) 修(xiu)(xiu)，全(quan)面(mian)提升(sheng)設(she)(she)(she)(she)備(bei)(bei)智(zhi)能化水平，推廣應用智(zhi)能設(she)(she)(she)(she)備(bei)(bei)和技術，實現電(dian)網(wang)安全(quan)在線(xian)預警和設(she)(she)(she)(she)備(bei)(bei)智(zhi)能化監控。

 電力(li)設(she)(she)備(bei)(bei)在(zai)線監測技(ji)術(shu)是(shi)指直接安裝在(zai)電力(li)設(she)(she)備(bei)(bei)上可實(shi)時記(ji)錄表征設(she)(she)備(bei)(bei)運行狀(zhuang)態(tai)特(te)征量的(de)測量和診斷系(xi)(xi)統(tong)及技(ji)術(shu)。在(zai)線監測系(xi)(xi)統(tong)一般由先(xian)進(jin)的(de)傳感器技(ji)術(shu)、計算機與信(xin)息處理技(ji)術(shu)、通訊系(xi)(xi)統(tong)、專家分析(xi)系(xi)(xi)統(tong)及較為完備(bei)(bei)的(de)系(xi)(xi)統(tong)數據信(xin)息庫組成。

 以(yi)變電(dian)站一次設(she)備主(zhu)要(yao)在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)系統(tong)為例，就有：電(dian)容性設(she)備的(de)電(dian)容量、介(jie)損在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)；金屬氧(yang)化物避(bi)雷(lei)器的(de)全電(dian)流、阻性電(dian)流在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)；變壓器本體絕緣油(you)色譜在(zai)(zai)(zai)(zai) 線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)、光纖(xian)測(ce)(ce)溫(wen)在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)、本體超(chao)高頻(pin)(pin)局(ju)(ju)放在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)、套管局(ju)(ju)放、介(jie)損在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)、有載(zai)開(kai)關動態(tai)特性在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)；GIS超(chao)高頻(pin)(pin)局(ju)(ju)放在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)、微水在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)；開(kai)關 機械特性監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)及開(kai)關柜(ju)光纖(xian)溫(wen)度在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)、SF6氣體密度在(zai)(zai)(zai)(zai)線(xian)監(jian)(jian)(jian)(jian)(jian)(jian)測(ce)(ce)等。

 電(dian)力設備(bei)在(zai)(zai)線(xian)(xian)(xian)監(jian)測領(ling)域投資價值(zhi)凸現，在(zai)(zai)線(xian)(xian)(xian)監(jian)測產品(pin)的下游需(xu)求(qiu)高(gao)增(zeng)長可(ke)以維持。一是(shi)(shi)電(dian)網公司實行狀態檢修與建設智能(neng)電(dian)網的戰略已(yi)經確(que)定，電(dian)網可(ke)靠性(xing)要(yao)求(qiu)更加 嚴格，在(zai)(zai)線(xian)(xian)(xian)監(jian)測產品(pin)已(yi)是(shi)(shi)其不可(ke)或缺的重要(yao)組成(cheng)；二是(shi)(shi)除(chu)新增(zeng)變(bian)電(dian)站(zhan)需(xu)求(qiu)外，存(cun)量改(gai)造部(bu)分有更大的空間；三是(shi)(shi)在(zai)(zai)線(xian)(xian)(xian)監(jian)測產品(pin)有從單一產品(pin)監(jian)測到變(bian)電(dian)站(zhan)綜合監(jian)測系 統發展的趨勢。除(chu)此之外，隨著電(dian)力設備(bei)日益增(zeng)加和線(xian)(xian)(xian)路工(gong)人的短缺，電(dian)網更需(xu)要(yao)依賴在(zai)(zai)線(xian)(xian)(xian)監(jian)測產品(pin)提高(gao)管理水平。

 從國家(jia)電(dian)(dian)網(wang)公(gong)司招標情況來看(kan)，目前(qian)在(zai)線(xian)監(jian)測產品(pin)的(de)(de)市場主(zhu)要(yao)集中在(zai)智(zhi)(zhi)(zhi)能(neng)(neng)電(dian)(dian)網(wang)的(de)(de)變電(dian)(dian)環節。國家(jia)電(dian)(dian)網(wang)公(gong)司在(zai)智(zhi)(zhi)(zhi)能(neng)(neng)電(dian)(dian)網(wang)規劃報告中也已將變電(dian)(dian)站(zhan)(zhan)狀態(tai)(tai)監(jian)測系統建設作為(wei) 智(zhi)(zhi)(zhi)能(neng)(neng)變電(dian)(dian)站(zhan)(zhan)的(de)(de)重(zhong)要(yao)內容。智(zhi)(zhi)(zhi)能(neng)(neng)變電(dian)(dian)站(zhan)(zhan)通過狀態(tai)(tai)監(jian)測單元實現變壓器油(you)色譜、組合電(dian)(dian)器局(ju)部放電(dian)(dian)、避雷器全電(dian)(dian)流等主(zhu)要(yao)設備(bei)、重(zhong)要(yao)參數(shu)的(de)(de)在(zai)線(xian)監(jian)測，為(wei)電(dian)(dian)網(wang)設備(bei)管理提 供(gong)基(ji)礎數(shu)據支(zhi)撐。實時(shi)狀態(tai)(tai)信息通過專(zhuan)家(jia)系統分析處理后(hou)可做出初步決策，實現站(zhan)(zhan)內智(zhi)(zhi)(zhi)能(neng)(neng)設備(bei)自診斷功能(neng)(neng)。