|
|||
|
|||
我廠生(sheng)產的S11油(you)浸式(shi)(shi)變(bian)(bian)壓(ya)器(qi)在運(yun)輸(shu)過程(cheng)中沒(mei)有遭(zao)遇(yu)到(dao)異(yi)常的氣象狀況,在油(you)浸式(shi)(shi)變(bian)(bian)壓(ya)器(qi)到(dao)達(da)現(xian)場并就位后(hou)(hou),也沒(mei)有發現(xian)S11油(you)浸式(shi)(shi)變(bian)(bian)壓(ya)器(qi)器(qi)身上(shang)結構件出(chu)現(xian)損壞或其他異(yi)常現(xian)象。所以(yi)我們根據變(bian)(bian)壓(ya)器(qi)在運(yun)行(xing)后(hou)(hou)均(jun)有嚴重的硅(gui)鋼(gang)片彎曲現(xian)象,表明運(yun)輸(shu)過程(cheng)中造(zao)成變(bian)(bian)壓(ya)器(qi)硅(gui)鋼(gang)片彎曲的可能性很小。
油浸式變(bian)壓(ya)(ya)器型號(hao)-S11油浸式變(bian)壓(ya)(ya)器在模擬(ni)風(feng)力(li)機(ji)捕(bu)獲最大風(feng)能(neng)的(de)過程(cheng)中在快速(su)性、穩(wen)定性和(he)準確(que)性方(fang)面都(dou)(dou)取(qu)得了較好的(de)效(xiao)果(guo)。唯一的(de)遺憾是變(bian)壓(ya)(ya)器輸出(chu)的(de)功(gong)率脈動(dong)還(huan)是相當的(de)大,但這是直接轉矩控(kong)制不可避免(mian)和(he)消除的(de)現(xian)象。相對于傳統的(de)直接轉矩控(kong)制來說,不管(guan)在轉矩脈動(dong)、磁(ci)鏈脈動(dong)還(huan)是低速(su)特(te)性,本文論述的(de)方(fang)法(fa)都(dou)(dou)已經取(qu)得了很(hen)好的(de)效(xiao)果(guo)。該(gai)方(fang)法(fa)在異(yi)步(bu)電機(ji)控(kong)制和(he)風(feng)力(li)發電模擬(ni)實驗平臺(tai)的(de)控(kong)制中將有(you)很(hen)大的(de)應(ying)用價值。
油(you)浸式(shi)變(bian)(bian)(bian)壓(ya)(ya)器(qi)型號-S11油(you)浸式(shi)變(bian)(bian)(bian)壓(ya)(ya)器(qi)分(fen)單相(xiang)(xiang)和三相(xiang)(xiang)兩(liang)種,一般均制成(cheng)(cheng)三相(xiang)(xiang)油(you)浸式(shi)變(bian)(bian)(bian)壓(ya)(ya)器(qi)型號-S11油(you)浸式(shi)變(bian)(bian)(bian)壓(ya)(ya)器(qi)以直接(jie)(jie)滿足(zu)輸配電(dian)的(de)(de)要(yao)求(qiu)。小型變(bian)(bian)(bian)壓(ya)(ya)器(qi)有(you)制成(cheng)(cheng)單相(xiang)(xiang)的(de)(de),特(te)大型變(bian)(bian)(bian)壓(ya)(ya)器(qi)做成(cheng)(cheng)單相(xiang)(xiang)后,組成(cheng)(cheng)三相(xiang)(xiang)變(bian)(bian)(bian)壓(ya)(ya)器(qi)組,以滿足(zu)運輸的(de)(de)要(yao)求(qiu)。額(e)定頻(pin)率(lv),變(bian)(bian)(bian)壓(ya)(ya)器(qi)的(de)(de)額(e)定頻(pin)率(lv)即是所設(she)計(ji)的(de)(de)運行頻(pin)率(lv),我(wo)國(guo)為(wei)5OHz。額(e)定電(dian)壓(ya)(ya),額(e)定電(dian)壓(ya)(ya)是指變(bian)(bian)(bian)壓(ya)(ya)器(qi)線(xian)電(dian)壓(ya)(ya) (有(you)效值),它應與所連接(jie)(jie)的(de)(de)輸變(bian)(bian)(bian)電(dian)線(xian)路(lu)(lu)電(dian)壓(ya)(ya)相(xiang)(xiang)符合。我(wo)國(guo)輸變(bian)(bian)(bian)電(dian)線(xian)路(lu)(lu)的(de)(de)電(dian)壓(ya)(ya)等級 (即線(xian)路(lu)(lu)終端(duan)電(dian)壓(ya)(ya))為(wei)0.38、(3、6)、10、35、(63)、110、220、330、500(KV)。故(gu)連接(jie)(jie)于線(xian)路(lu)(lu)終端(duan)的(de)(de)變(bian)(bian)(bian)壓(ya)(ya)器(qi) (稱為(wei)降壓(ya)(ya)變(bian)(bian)(bian)壓(ya)(ya)器(qi))其一次側額(e)定電(dian)壓(ya)(ya)與上(shang)列數值相(xiang)(xiang)同。
油浸式(shi)變(bian)壓(ya)(ya)(ya)器型(xing)號-S11油浸式(shi)變(bian)壓(ya)(ya)(ya)器始(shi)端(duan)(duan)(電(dian)源端(duan)(duan))電(dian)壓(ya)(ya)(ya)高(gao)于等級電(dian)壓(ya)(ya)(ya),35KV以下(xia)的要高(gao)5%,35KV及以上的高(gao)10%,即線(xian)路始(shi)端(duan)(duan)電(dian)壓(ya)(ya)(ya)為0.4、(3.15、6.3)、10.5、38.5、(69)、121、242、363、550(KV)。故連接于線(xian)路始(shi)端(duan)(duan)的變(bian)壓(ya)(ya)(ya)器 (即升壓(ya)(ya)(ya)變(bian)壓(ya)(ya)(ya)器),其二次側額定電(dian)壓(ya)(ya)(ya)與上列數值(zhi)相同。
山東聊(liao)城變壓(ya)器(qi)有限公司針對(dui)變壓(ya)器(qi)模(mo)(mo)擬(ni)系統中通常采(cai)用(yong)的直(zhi)接(jie)(jie)轉(zhuan)矩控(kong)制方法,提出了(le)在傳統的直(zhi)接(jie)(jie)轉(zhuan)矩控(kong)制的基礎上引出變壓(ya)器(qi)模(mo)(mo)糊(hu)控(kong)制和灰色預測對(dui)系統進行(xing)優化。該方法解決了(le)直(zhi)接(jie)(jie)轉(zhuan)矩控(kong)制轉(zhuan)矩輸出脈動較大(da),變壓(ya)器(qi)低速(su)運行(xing)時磁(ci)鏈畸變等問題(ti)。
油(you)浸式(shi)(shi)變(bian)(bian)(bian)壓(ya)(ya)器(qi)型(xing)號-S11油(you)浸式(shi)(shi)變(bian)(bian)(bian)壓(ya)(ya)器(qi)不僅屬于(yu)電(dian)(dian)力系統(tong)中最重要的(de)和(he)(he)最昂(ang)貴的(de)設備之一,而且(qie)也是導(dao)致電(dian)(dian)力系統(tong)事故(gu)最多的(de)設備之一,因(yin)(yin)(yin)此,國內(nei)外(wai)不僅要定期作(zuo)以(yi)預防性(xing)試驗(yan)為(wei)基礎(chu)的(de)預防性(xing)維護,而且(qie)相繼都在(zai)研(yan)究以(yi)在(zai)線監測為(wei)基礎(chu)的(de)預知性(xing)維護策略,以(yi)便實時或定時在(zai)線監測與(yu)診(zhen)斷潛伏(fu)性(xing)故(gu)障(zhang)(zhang)或缺陷。對于(yu)大(da)型(xing)電(dian)(dian)力變(bian)(bian)(bian)壓(ya)(ya)器(qi),目前幾乎都是用油(you)來絕緣(yuan)和(he)(he)散熱,油(you)浸式(shi)(shi)變(bian)(bian)(bian)壓(ya)(ya)器(qi)型(xing)號-S11油(you)浸式(shi)(shi)變(bian)(bian)(bian)壓(ya)(ya)器(qi)油(you)與(yu)油(you)中的(de)固體(ti)(ti)有(you)機絕緣(yuan)材(cai)料(紙(zhi)和(he)(he)紙(zhi)板等(deng))在(zai)運(yun)行電(dian)(dian)壓(ya)(ya)下(xia)因(yin)(yin)(yin)電(dian)(dian)、熱、氧(yang)化和(he)(he)局部電(dian)(dian)弧(hu)等(deng)多種因(yin)(yin)(yin)素(su)作(zuo)用會逐漸變(bian)(bian)(bian)質(zhi),裂(lie)解(jie)成(cheng)低分(fen)子氣(qi)體(ti)(ti);變(bian)(bian)(bian)壓(ya)(ya)器(qi)內(nei)部存在(zai)的(de)潛伏(fu)性(xing)過(guo)熱或放電(dian)(dian)故(gu)障(zhang)(zhang)又(you)會加(jia)快產氣(qi)的(de)速率.隨著(zhu)故(gu)障(zhang)(zhang)的(de)緩慢發展(zhan),裂(lie)解(jie)出來的(de)氣(qi)體(ti)(ti)形成(cheng)泡在(zai)油(you)中經過(guo)對流、擴散作(zuo)用,就會不斷地溶解(jie)在(zai)油(you)中.同(tong)一類性(xing)質(zhi)的(de)故(gu)障(zhang)(zhang),其(qi)產生的(de)氣(qi)體(ti)(ti)的(de)組(zu)分(fen)和(he)(he)含量在(zai)一定程(cheng)度上反映(ying)出變(bian)(bian)(bian)壓(ya)(ya)器(qi)絕緣(yuan)老化或故(gu)障(zhang)(zhang)的(de)程(cheng)度,可以(yi)作(zuo)為(wei)反映(ying)電(dian)(dian)氣(qi)設備異常的(de)特征量。
山東聊城變(bian)壓器(qi)有限(xian)公司(si)油浸式(shi)變(bian)壓器(qi)型號-S11油浸式(shi)變(bian)壓器(qi)技術參數:
|
|||
下一篇:SCBH15-M-1600KVA/35/10非晶合金變壓器 | |||
上一篇:油浸式三相非晶合金變壓器 | |||