BWDK-3225A干式變壓器溫度控制器

人類社會(hui)的(de)快速(su)發展，其(qi)中電(dian)能的(de)貢獻功(gong)不可沒，無論是生活、工業、軍事等各個(ge)領域都(dou)離不開(kai)它，電(dian)力系統(tong)中的(de)變(bian)(bian)(bian)電(dian)站(zhan)(zhan)可以對電(dian)壓(ya)和電(dian)流進行變(bian)(bian)(bian)換，接(jie)受電(dian)能及分(fen)配電(dian)能的(de)場所。在發電(dian)廠(chang)內(nei)(nei)的(de)變(bian)(bian)(bian)電(dian)站(zhan)(zhan)是升壓(ya)變(bian)(bian)(bian)電(dian)站(zhan)(zhan)，其(qi)作(zuo)用是將(jiang)發電(dian)機發出的(de)電(dian)能升壓(ya)后饋送到(dao)高(gao)(gao)壓(ya)電(dian)網中。其(qi)中變(bian)(bian)(bian)壓(ya)器是變(bian)(bian)(bian)電(dian)站(zhan)(zhan)中的(de)重要核心設備(bei)，發電(dian)廠(chang)內(nei)(nei)變(bian)(bian)(bian)電(dian)站(zhan)(zhan)中的(de)變(bian)(bian)(bian)壓(ya)器大都(dou)是大型設備(bei)，而且(qie)功(gong)率非常之(zhi)高(gao)(gao)，在長時間(jian)工作(zuo)時內(nei)(nei)部會(hui)發生高(gao)(gao)溫。

在電(dian)力供電(dian)系(xi)統中，干式變(bian)壓器(qi)因其具有(you)環(huan)保(bao)(bao)(bao)性、阻燃、抗沖(chong)擊、免維護等(deng)優良特性，在高(gao)層建筑、商業中心、機場、化工廠、核電(dian)站、工礦(kuang)企業等(deng)對防火、防爆要求較(jiao)高(gao)的(de)場所，得到了廣泛的(de)應用。為保(bao)(bao)(bao)證(zheng)干式變(bian)壓器(qi)的(de)安全正常運(yun)行(xing)(xing)，溫(wen)(wen)(wen)控(kong)器(qi)作(zuo)為檢(jian)測變(bian)壓器(qi)三相(xiang)繞組溫(wen)(wen)(wen)度(du)必不(bu)可(ke)少。溫(wen)(wen)(wen)控(kong)器(qi)可(ke)檢(jian)測繞組溫(wen)(wen)(wen)度(du)來判斷(duan)是否開(kai)啟和停止變(bian)壓器(qi)的(de)散熱風扇，過溫(wen)(wen)(wen)情況下發(fa)出聲光報警(jing)，極限情況下切斷(duan)變(bian)壓器(qi)的(de)輸出來保(bao)(bao)(bao)證(zheng)變(bian)壓器(qi)及供電(dian)回路的(de)安全。現(xian)有(you)的(de)溫(wen)(wen)(wen)控(kong)器(qi)采用單行(xing)(xing)LED數碼顯(xian)示，輪流顯(xian)示變(bian)壓器(qi)ABC三相(xiang)的(de)繞組溫(wen)(wen)(wen)度(du)，沒有(you)漢字顯(xian)示轉換速度(du)慢，顯(xian)示和記錄信息數據不(bu)多且不(bu)直(zhi)觀(guan)。

BWDK-3225A通過嵌入(ru)式(shi)控制(zhi)器(qi)和鉑(bo)電(dian)阻(zu)溫(wen)(wen)度(du)(du)傳(chuan)感器(qi)對三相繞組(zu)的(de)溫(wen)(wen)度(du)(du)數據進(jin)行實時采(cai)集，利用(yong)(yong)在變(bian)壓(ya)(ya)器(qi)繞組(zu)測溫(wen)(wen)孔(kong)中(zhong)的(de)鉑(bo)熱電(dian)阻(zu)來測量(liang)繞組(zu)的(de)溫(wen)(wen)度(du)(du)并進(jin)行數字顯示，并通過液晶顯示屏單屏顯示多行內容，采(cai)用(yong)(yong)存儲器(qi)記錄多個信息量(liang)，能夠在變(bian)壓(ya)(ya)器(qi)斷(duan)電(dian)、損壞、燒毀等異常情(qing)況下查詢所保存變(bian)壓(ya)(ya)器(qi)的(de)繞組(zu)溫(wen)(wen)度(du)(du)值、散熱風扇啟動和停(ting)止(zhi)時間數據信息，用(yong)(yong)于判定(ding)造成異常情(qing)況的(de)原(yuan)因，具有真正的(de)黑匣子功能。

干(gan)式變(bian)(bian)壓(ya)器(qi)(qi)的安(an)全(quan)運行(xing)和(he)它的使用(yong)壽命，很大(da)程度(du)(du)(du)上取決于(yu)(yu)變(bian)(bian)壓(ya)器(qi)(qi)繞組絕(jue)緣(yuan)(yuan)的安(an)全(quan)的可(ke)靠性。繞組溫(wen)(wen)度(du)(du)(du)超過(guo)絕(jue)緣(yuan)(yuan)耐受(shou)(shou)溫(wen)(wen)度(du)(du)(du)使絕(jue)緣(yuan)(yuan)破壞，是導致變(bian)(bian)壓(ya)器(qi)(qi)不能正常(chang)工(gong)作的主(zhu)要原因之(zhi)一，同時(shi)(shi)變(bian)(bian)壓(ya)器(qi)(qi)鐵(tie)(tie)芯(xin)由(you)于(yu)(yu)多(duo)點接地等故(gu)障(zhang)也可(ke)以(yi)引起(qi)鐵(tie)(tie)芯(xin)局部過(guo)熱而損(sun)壞鐵(tie)(tie)芯(xin)絕(jue)緣(yuan)(yuan)，嚴重時(shi)(shi)會出現鐵(tie)(tie)芯(xin)燒損(sun)甚至到損(sun)壞變(bian)(bian)壓(ya)器(qi)(qi)的情(qing)況。因此對變(bian)(bian)壓(ya)器(qi)(qi)的繞組溫(wen)(wen)度(du)(du)(du)和(he)鐵(tie)(tie)芯(xin)運行(xing)溫(wen)(wen)度(du)(du)(du)監(jian)測(ce)及其報警控制是十分重要的。目(mu)前大(da)型干(gan)式變(bian)(bian)壓(ya)器(qi)(qi)鐵(tie)(tie)芯(xin)溫(wen)(wen)度(du)(du)(du)多(duo)是利用(yong)預先埋設測(ce)溫(wen)(wen)元(yuan)件(jian)來測(ce)量的，而中(zhong)小型干(gan)式變(bian)(bian)壓(ya)器(qi)(qi)很少對變(bian)(bian)壓(ya)器(qi)(qi)鐵(tie)(tie)芯(xin)溫(wen)(wen)度(du)(du)(du)進行(xing)監(jian)測(ce)，即使進行(xing)監(jian)測(ce)的也多(duo)使用(yong)示(shi)溫(wen)(wen)片貼在(zai)變(bian)(bian)壓(ya)器(qi)(qi)鐵(tie)(tie)芯(xin)表面(mian)監(jian)視鐵(tie)(tie)芯(xin)溫(wen)(wen)度(du)(du)(du)。示(shi)溫(wen)(wen)片雖然可(ke)以(yi)在(zai)一定程度(du)(du)(du)上反應(ying)鐵(tie)(tie)芯(xin)的溫(wen)(wen)度(du)(du)(du)，但是要依靠巡(xun)視人員的主(zhu)觀判斷，同時(shi)(shi)還受(shou)(shou)限于(yu)(yu)巡(xun)查時(shi)(shi)間及燈光照明等條(tiao)件(jian)，也不能對鐵(tie)(tie)芯(xin)溫(wen)(wen)度(du)(du)(du)的變(bian)(bian)化進行(xing)數據統計(ji)和(he)實(shi)時(shi)(shi)狀態監(jian)測(ce)。