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電(dian)(dian)(dian)力(li)(li)(li)系(xi)統(tong)(tong)(tong)水電(dian)(dian)(dian)安全知(zhi)識電(dian)(dian)(dian)力(li)(li)(li)系(xi)統(tong)(tong)(tong):主要在說(shuo)明發(fa)電(dian)(dian)(dian)廠如何(he)輸(shu)(shu)送電(dian)(dian)(dian)力(li)(li)(li)到用戶端(duan),諸如傳輸(shu)(shu)線(xian)參數(shu)，傳輸(shu)(shu)線(xian)的(de)數(shu)學模(mo)式(shi)，變壓(ya)器(qi)的(de)數(shu)學模(mo)式(shi)及標么值系(xi)統(tong)(tong)(tong)，對(dui)稱成分，對(dui)稱三(san)相(xiang)故障，非(fei)對(dui)稱故障，負(fu)載潮(chao)流(liu)(liu)分析與控制，電(dian)(dian)(dian)力(li)(li)(li)系(xi)統(tong)(tong)(tong)之經濟(ji)運轉(zhuan)，發(fa)電(dian)(dian)(dian)機之數(shu)學模(mo)式(shi)，電(dian)(dian)(dian)力(li)(li)(li)系(xi)統(tong)(tong)(tong)穩定度，電(dian)(dian)(dian)壓(ya)控制系(xi)統(tong)(tong)(tong)，電(dian)(dian)(dian)力(li)(li)(li)控制系(xi)統(tong)(tong)(tong)，系(xi)統(tong)(tong)(tong)保護(hu)等(deng)。電(dian)(dian)(dian)力(li)(li)(li)系(xi)統(tong)(tong)(tong)中(zhong)的(de)三(san)相(xiang)電(dian)(dian)(dian)是指?a.直流(liu)(liu)電(dian)(dian)(dian)~交流(liu)(liu)電(dian)(dian)(dian)~高壓(ya)電(dian)(dian)(dian)b.正電(dian)(dian)(dian)~負(fu)電(dian)(dian)(dian)~火線(xian)c.正電(dian)(dian)(dian)~負(fu)電(dian)(dian)(dian)~高壓(ya)電(dian)(dian)(dian)三(san)相(xiang)電(dian)(dian)(dian)壓(ya)分成Ｒ、Ｓ、Ｔ（或Ａ、Ｂ、Ｃ）三(san)相(xiang)，即是此三(san)個(ge)電(dian)(dian)(dian)位角度隨(sui)時(shi)間變化，而通過(guo)某一點的(de)順序（相(xiang)序）。三(san)個(ge)...

試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)在(zai)原理上與一般的(de)(de)(de)電(dian)力(li)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)相同，但在(zai)結構上有許多(duo)特點(1)試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)電(dian)壓(ya)(ya)(ya)(ya)高而(er)容(rong)量(liang)小。由于(yu)電(dian)壓(ya)(ya)(ya)(ya)高，高壓(ya)(ya)(ya)(ya)繞組要(yao)采(cai)(cai)用較(jiao)厚的(de)(de)(de)絕(jue)(jue)緣及較(jiao)寬的(de)(de)(de)油司隙距離，因(yin)此試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)(de)漏(lou)磁通(tong)較(jiao)大(da)，短(duan)路電(dian)抗值也較(jiao)大(da)。(2)試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)不(bu)會(hui)受到大(da)氣過電(dian)壓(ya)(ya)(ya)(ya)及操作過電(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)侵襲，因(yin)而(er)絕(jue)(jue)緣可(ke)采(cai)(cai)用較(jiao)小的(de)(de)(de)安全系數。(3)通(tong)常(chang)試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)(de)持續(xu)工(gong)作時間較(jiao)短(duan)，不(bu)會(hui)過熱，不(bu)必(bi)采(cai)(cai)用復雜的(de)(de)(de)冷卻系統(tong)。正是(shi)由于(yu)試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)允許溫(wen)升較(jiao)低(di)，故在(zai)額定電(dian)壓(ya)(ya)(ya)(ya)和額定功(gong)率(lv)下只(zhi)能短(duan)時運行(xing)。(4)試(shi)(shi)驗(yan)(yan)變(bian)壓(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)(de)短(duan)路電(dian)流較(jiao)小，不(bu)必(bi)考(kao)慮繞組的(de)(de)(de)短(duan)路機械強...

變(bian)壓(ya)器(qi)(qi)短路(lu)阻(zu)抗(kang)測試(shi)(shi)儀(yi)(yi)是鑒定(ding)運(yun)行(xing)中(zhong)變(bian)壓(ya)器(qi)(qi)受到短路(lu)電流的(de)沖擊，或變(bian)壓(ya)器(qi)(qi)在運(yun)輸(shu)和(he)安裝時(shi)受到機械(xie)力撞擊后，檢查其繞組是否變(bian)形的(de)直接(jie)方法(fa)。它作為一(yi)(yi)(yi)種檢測儀(yi)(yi)器(qi)(qi)，在使用時(shi)間較長或者一(yi)(yi)(yi)些不(bu)當的(de)操作后容易(yi)出現一(yi)(yi)(yi)些故(gu)(gu)障(zhang)(zhang)(zhang)，下面就變(bian)壓(ya)器(qi)(qi)短路(lu)阻(zu)抗(kang)測試(shi)(shi)儀(yi)(yi)常見(jian)故(gu)(gu)障(zhang)(zhang)(zhang)及原因分析來說明一(yi)(yi)(yi)下。故(gu)(gu)障(zhang)(zhang)(zhang)一(yi)(yi)(yi)：液(ye)晶無顯示原因分析：1)液(ye)晶對(dui)比度(du)需(xu)要調(diao)節2)儀(yi)(yi)器(qi)(qi)主(zhu)(zhu)板(ban)故(gu)(gu)障(zhang)(zhang)(zhang)3)電源(yuan)故(gu)(gu)障(zhang)(zhang)(zhang)不(bu)能(neng)測試(shi)(shi)故(gu)(gu)障(zhang)(zhang)(zhang)二：不(bu)能(neng)測試(shi)(shi)原因分析：1)夾子未夾牢2)電源(yuan)沒有(you)接(jie)好3)儀(yi)(yi)器(qi)(qi)內部接(jie)線松(song)動故(gu)(gu)障(zhang)(zhang)(zhang)三：打印機不(bu)打印原因分析：1)打印機故(gu)(gu)障(zhang)(zhang)(zhang)2)儀(yi)(yi)器(qi)(qi)主(zhu)(zhu)板(ban)故(gu)(gu)障(zhang)(zhang)(zhang)3...

電(dian)(dian)流(liu)(liu)互感器(qi)原理是依據(ju)電(dian)(dian)磁(ci)感應(ying)原理的(de)(de)(de)。電(dian)(dian)流(liu)(liu)互感器(qi)是由閉合的(de)(de)(de)鐵(tie)心和(he)繞組組成。它(ta)的(de)(de)(de)一次(ci)繞組匝數(shu)很少(shao)，串在(zai)需要(yao)測量的(de)(de)(de)電(dian)(dian)流(liu)(liu)的(de)(de)(de)線(xian)(xian)路中，因此它(ta)經常有線(xian)(xian)路的(de)(de)(de)全部電(dian)(dian)流(liu)(liu)流(liu)(liu)過，二次(ci)繞組匝數(shu)比較多，串接在(zai)測量儀表和(he)保護(hu)回路中。我們首先應(ying)根據(ju)負荷(he)的(de)(de)(de)大(da)小(xiao)確定互感器(qi)的(de)(de)(de)倍率，然后將(jiang)一次(ci)線(xian)(xian)按要(yao)求(qiu)從互感器(qi)的(de)(de)(de)中心穿(chuan)(chuan)繞，注意不能以(yi)繞在(zai)外圈的(de)(de)(de)匝數(shu)為(wei)(wei)繞線(xian)(xian)匝數(shu)，應(ying)以(yi)穿(chuan)(chuan)入(ru)電(dian)(dian)流(liu)(liu)互感器(qi)內中的(de)(de)(de)匝數(shu)為(wei)(wei)準。如(ru)大(da)變流(liu)(liu)比為(wei)(wei)150/5的(de)(de)(de)電(dian)(dian)流(liu)(liu)互感器(qi)，其一次(ci)高額(e)定電(dian)(dian)流(liu)(liu)為(wei)(wei)150A,如(ru)需作為(wei)(wei)50/5的(de)(de)(de)互感器(qi)來(lai)用，導線(xian)(xian)應(ying)穿(chuan)(chuan)繞150/50=3匝，即內...

對于本身作(zuo)為電力系(xi)統維護設備的高(gao)壓(ya)(ya)(ya)試驗(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)來說，沒有(you)比它們自身的安全性能保(bao)證更加重要(yao)的事情(qing)了。今天，小(xiao)編就來為各位(wei)講述下(xia)高(gao)壓(ya)(ya)(ya)試驗(yan)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的維護和保(bao)養的小(xiao)常識。1、投入(ru)備用變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)，斷(duan)開(kai)檢修的變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)低壓(ya)(ya)(ya)側(ce)斷(duan)路(lu)器(qi)(qi)(qi)(qi)，取下(xia)把持(chi)電源(yuan)的操(cao)作(zuo)保(bao)險，在開(kai)關把手(shou)處懸掛“制止合閘”標(biao)記(ji)牌。2、斷(duan)開(kai)檢修變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)高(gao)壓(ya)(ya)(ya)側(ce)的斷(duan)路(lu)器(qi)(qi)(qi)(qi)，合上接地(di)開(kai)關，對變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)進行充足放(fang)電后(hou)，鎖住高(gao)壓(ya)(ya)(ya)柜，在開(kai)關把手(shou)處懸掛“制止合閘”標(biao)記(ji)牌。3、干式變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的頤養，首(shou)先清掃瓷套管(guan)和外殼，其(qi)次檢討外殼、墊片(pian)、瓷套管(guan)有(you)無(wu)決裂、放(fang)電痕跡或(huo)膠...

智能(neng)直流(liu)(liu)高(gao)(gao)壓(ya)(ya)發(fa)(fa)生器(qi)是根(gen)據中國行業標準ZBF24003-90《便(bian)攜式直流(liu)(liu)高(gao)(gao)壓(ya)(ya)發(fa)(fa)生器(qi)通用(yong)技(ji)(ji)術條件(jian)》的(de)(de)要求，新(xin)研究(jiu)、設計、制(zhi)造的(de)(de)的(de)(de)科技(ji)(ji)產品。便(bian)攜式直流(liu)(liu)高(gao)(gao)壓(ya)(ya)發(fa)(fa)生器(qi)是適(shi)用(yong)于電(dian)力(li)部(bu)門、科研單位、化(hua)(hua)工、發(fa)(fa)電(dian)廠(chang)等對氧化(hua)(hua)鋅避雷(lei)器(qi)、磁吹避雷(lei)器(qi)、電(dian)力(li)電(dian)纜、發(fa)(fa)電(dian)機(ji)、變壓(ya)(ya)器(qi)、開(kai)關等設備進行直流(liu)(liu)高(gao)(gao)壓(ya)(ya)試驗，是新(xin)理想的(de)(de)換代(dai)產品。高(gao)(gao)頻直流(liu)(liu)高(gao)(gao)壓(ya)(ya)發(fa)(fa)生器(qi)采(cai)(cai)用(yong)高(gao)(gao)頻倍(bei)壓(ya)(ya)電(dian)路，應(ying)用(yong)新(xin)的(de)(de)PWM高(gao)(gao)頻脈寬調制(zhi)技(ji)(ji)術，閉環調整，采(cai)(cai)用(yong)了電(dian)壓(ya)(ya)大反饋，使(shi)電(dian)壓(ya)(ya)穩定度(du)大幅度(du)提高(gao)(gao)。使(shi)用(yong)性(xing)能(neng)的(de)(de)大功率IGBT器(qi)件(jian)及其驅動技(ji)(ji)術，并根(gen)據電(dian)磁兼容性(xing)理論...

現(xian)在(zai)城(cheng)市(shi)建設(she)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)數量逐漸變多(duo)(duo)(duo)，電(dian)(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)故(gu)(gu)障也逐漸頻發(fa)(fa)(fa)，由于電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)絕緣損壞等其(qi)他多(duo)(duo)(duo)方面(mian)原(yuan)因，故(gu)(gu)障發(fa)(fa)(fa)生(sheng)概(gai)率也逐漸增加(jia)，電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)故(gu)(gu)障的(de)查(cha)(cha)找(zhao)也變得越來越困(kun)難，這(zhe)也受到很多(duo)(duo)(duo)電(dian)(dian)(dian)(dian)(dian)力(li)系統(tong)運(yun)行(xing)部門的(de)關注和重(zhong)視。電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)故(gu)(gu)障點的(de)及(ji)時、快速查(cha)(cha)找(zhao)與測量是(shi)保證電(dian)(dian)(dian)(dian)(dian)力(li)供(gong)應暢通、保證供(gong)電(dian)(dian)(dian)(dian)(dian)可(ke)靠性的(de)必(bi)需手段(duan)，但由于受到電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)線(xian)路的(de)隱蔽性、電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)運(yun)行(xing)資(zi)料不(bu)完善以及(ji)測試設(she)備探測水平的(de)局(ju)限(xian)性，使電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)故(gu)(gu)障的(de)查(cha)(cha)找(zhao)非常困(kun)難。針對電(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)(lan)故(gu)(gu)障的(de)多(duo)(duo)(duo)發(fa)(fa)(fa)性以及(ji)查(cha)(cha)找(zhao)的(de)難度性，科新電(dian)(dian)(dian)(dian)(dian)力(li)的(de)技術(shu)工程師根據13年的(de)現(xian)場實踐經(jing)驗，同時參考(kao)相(xiang)關資(zi)料，總(zong)結出以下電(dian)(dian)(dian)(dian)(dian)...

短(duan)路接(jie)(jie)(jie)地線(xian)(xian)當用電(dian)(dian)(dian)單位(wei)進行(xing)線(xian)(xian)路延長(chang)接(jie)(jie)(jie)線(xian)(xian)或檢(jian)修(xiu)啟(qi)動(dong)(dong)開(kai)關(guan)(guan)時,線(xian)(xian)路上(shang)(shang)有2臺及(ji)以上(shang)(shang)啟(qi)動(dong)(dong)開(kai)關(guan)(guan)時,應(ying)按程序(xu)停(ting)掉總(zong)開(kai)關(guan)(guan),在(zai)(zai)不進行(xing)作業的啟(qi)動(dong)(dong)開(kai)關(guan)(guan)電(dian)(dian)(dian)源側(ce)(ce)掛(gua)(gua)(gua)(gua)短(duan)路接(jie)(jie)(jie)地線(xian)(xian),當用電(dian)(dian)(dian)單位(wei)檢(jian)修(xiu)400總(zong)開(kai)關(guan)(guan)或線(xian)(xian)路延長(chang)接(jie)(jie)(jie)線(xian)(xian)，并且線(xian)(xian)路上(shang)(shang)只有一臺啟(qi)動(dong)(dong)開(kai)關(guan)(guan)時，應(ying)開(kai)停(ting)電(dian)(dian)(dian)票，到變電(dian)(dian)(dian)所停(ting)電(dian)(dian)(dian)，在(zai)(zai)用電(dian)(dian)(dian)單位(wei)400總(zong)開(kai)關(guan)(guan)電(dian)(dian)(dian)源側(ce)(ce)掛(gua)(gua)(gua)(gua)短(duan)路接(jie)(jie)(jie)地線(xian)(xian).當檢(jian)修(xiu)線(xian)(xian)路上(shang)(shang)有低壓聯絡(luo)開(kai)關(guan)(guan)或配電(dian)(dian)(dian)線(xian)(xian)路上(shang)(shang)開(kai)關(guan)(guan)存在(zai)(zai)兩路電(dian)(dian)(dian)時，除按程序(xu)停(ting)電(dian)(dian)(dian)在(zai)(zai)配電(dian)(dian)(dian)線(xian)(xian)路連線(xian)(xian)上(shang)(shang)掛(gua)(gua)(gua)(gua)短(duan)路接(jie)(jie)(jie)地線(xian)(xian)外，還必(bi)須在(zai)(zai)存在(zai)(zai)兩路電(dian)(dian)(dian)饋電(dian)(dian)(dian)開(kai)關(guan)(guan)負(fu)荷側(ce)(ce)掛(gua)(gua)(gua)(gua)短(duan)路接(jie)(jie)(jie)地線(xian)(xian)（針對雙回(hui)路供電(dian)(dian)(dian)）當進行(xing)變電(dian)(dian)(dian)所到用電(dian)(dian)(dian)單位(wei)400開(kai)關(guan)(guan)...

液壓(ya)油(you)(you)(you)(you)濾(lv)油(you)(you)(you)(you)機(ji)能快速脫除油(you)(you)(you)(you)液中(zhong)的(de)水分、雜質(zhi)及揮發(fa)物（如(ru)氨氣）等有害成份,提高(gao)油(you)(you)(you)(you)液品(pin)質(zhi),恢復(fu)其使用性能。保證液壓(ya)系(xi)統的(de)正常運行。然而(er)(er)(er)液壓(ya)油(you)(you)(you)(you)濾(lv)油(you)(you)(you)(you)機(ji)在使用過(guo)(guo)(guo)程中(zhong)也(ye)會出現真(zhen)空(kong)泵(beng)漏油(you)(you)(you)(you)的(de)現象。液壓(ya)油(you)(you)(you)(you)真(zhen)空(kong)泵(beng)漏油(you)(you)(you)(you)主(zhu)要發(fa)生在真(zhen)空(kong)泵(beng)的(de)油(you)(you)(you)(you)窗(chuang)、油(you)(you)(you)(you)箱密封(feng)墊、電機(ji)軸承軸封(feng)三個位置上(shang)，其主(zhu)要原因是(shi)真(zhen)空(kong)泵(beng)使用時(shi)間過(guo)(guo)(guo)長而(er)(er)(er)引起(qi)這些部位老化，密封(feng)失效，從(cong)而(er)(er)(er)導致漏油(you)(you)(you)(you)。液壓(ya)油(you)(you)(you)(you)濾(lv)油(you)(you)(you)(you)機(ji)的(de)油(you)(you)(you)(you)窗(chuang)漏油(you)(you)(you)(you)，是(shi)因為真(zhen)空(kong)泵(beng)使用時(shi)間過(guo)(guo)(guo)長而(er)(er)(er)使油(you)(you)(you)(you)窗(chuang)老化，引起(qi)破裂，或油(you)(you)(you)(you)窗(chuang)與油(you)(you)(you)(you)箱的(de)粘合劑老化失效，從(cong)而(er)(er)(er)導致泵(beng)油(you)(you)(you)(you)滲出；油(you)(you)(you)(you)箱通過(guo)(guo)(guo)適配器與電機(ji)相連，油(you)(you)(you)(you)箱與...

手(shou)持(chi)(chi)電能質量(liang)(liang)(liang)測(ce)(ce)(ce)量(liang)(liang)(liang)儀，配(pei)(pei)備高精(jing)度、高線性度的(de)電壓互感器(qi)和電流(liu)互感器(qi)，使儀器(qi)對各(ge)種參量(liang)(liang)(liang)的(de)測(ce)(ce)(ce)量(liang)(liang)(liang)精(jing)度很高，同(tong)時配(pei)(pei)有鉗形電流(liu)互感器(qi)，使得現場接線簡便。多電氣參數(shu)(shu)(shu)測(ce)(ce)(ce)量(liang)(liang)(liang)：可測(ce)(ce)(ce)量(liang)(liang)(liang)電壓、電流(liu)、相(xiang)位、頻率(lv)、功率(lv)、功率(lv)因數(shu)(shu)(shu)等參數(shu)(shu)(shu)；并(bing)可計算電壓平(ping)衡度。多電能質量(liang)(liang)(liang)參數(shu)(shu)(shu)測(ce)(ce)(ce)量(liang)(liang)(liang)：可測(ce)(ce)(ce)量(liang)(liang)(liang)電流(liu)基波(bo)、2-50次(ci)諧(xie)波(bo)、并(bing)可計算出總諧(xie)波(bo)畸變率(lv)；各(ge)相(xiang)電壓、電流(liu)的(de)短時閃(shan)變和長時閃(shan)變，測(ce)(ce)(ce)量(liang)(liang)(liang)參數(shu)(shu)(shu)及測(ce)(ce)(ce)量(liang)(liang)(liang)間(jian)隔(ge)可以設定，按(an)設置(zhi)的(de)時間(jian)間(jian)隔(ge)連(lian)續存儲數(shu)(shu)(shu)據。手(shou)持(chi)(chi)電能質量(liang)(liang)(liang)測(ce)(ce)(ce)量(liang)(liang)(liang)儀配(pei)(pei)備大屏幕液晶屏顯(xian)示(shi)器(qi)，可顯(xian)示(shi)各(ge)相(xiang)參量(liang)(liang)(liang)的(de)實時波(bo)形，用(yong)于(yu)簡單的(de)示(shi)波(bo)...