1. Cholinga ndi mitundu yatransformerkukonza
a. Cholinga cha kukonza transformer
Cholinga chachikulu cha kukonza transformer ndikuwonetsetsa kuti transformer ndi zowonjezera zake zamkati ndi zakunja zigawoZimakhala bwino, "zoyenera ntchito" ndipo zimatha kugwira ntchito mosamala nthawi iliyonse. Chofunikanso ndi kusunga mbiri yakale ya momwe transformer imagwirira ntchito.
b. Mafomu osamalira transformer
Ma transformer amphamvu amafuna ntchito zosiyanasiyana zosamalira nthawi zonse, kuphatikizapo kuyeza ndi kuyesa magawo osiyanasiyana a transformer. Pali mitundu iwiri yayikulu yosamalira transformer. Timachita gulu limodzi nthawi ndi nthawi (lotchedwa preventive maintenance) ndi lachiwiri pamlingo wapadera (monga, pakufunika).
2. Kuwunika Kokonza Transformer Pang'onopang'ono kwa Mwezi uliwonse
- Mulingo wa mafuta mu chivundikiro cha mafuta uyenera kufufuzidwa mwezi uliwonse kuti usagwere pansi pa malire okhazikika, motero kuwonongeka komwe kumachitika chifukwa cha mafutawo sikungatheke.
- Sungani mabowo opumira omwe ali mu chubu chopumira cha silica gel kuti muwonetsetse kuti kupuma bwino.
- Ngati wanuchosinthira mphamvuIli ndi masamba odzaza mafuta, onetsetsani kuti mafutawo adzazidwa bwino.
Ngati pakufunika, mafutawo adzadzazidwa mu bushing kufika pamlingo woyenera. Kudzaza mafuta kumachitika mu mkhalidwe wotseka.
3. Kukonza ndi Kuyang'anira Tsiku ndi Tsiku
- Werengani MOG (Maginito Oil Meter) ya thanki yayikulu ndi thanki yosungiramo zinthu.
- Mtundu wa silika gel yomwe ikupuma.
- Mafuta amatuluka kuchokera kulikonse kwa transformer.
Ngati mafuta sali bwino mu MOG, mafutawo ayenera kudzazidwa mu transformer, ndipo thanki yonse ya transformer iyenera kuyang'aniridwa kuti ione ngati mafuta atuluka. Ngati mafuta atuluka, chitanipo kanthu kofunikira kuti mutseke mafutawo. Ngati silica gel yasanduka pinki pang'ono, iyenera kusinthidwa.
4. Ndondomeko yoyambira yokonza transformer pachaka
– Ntchito yoziziritsira yokha, yakutali, komanso yamanja ya makina oziziritsira imatanthauza kuti mapampu amafuta, mafani ampweya, ndi zida zina zimagwirizana ndi makina oziziritsira a transformer ndi makina owongolera. Zidzawunikidwa kwa chaka chimodzi. Ngati pakhala vuto, fufuzani makina owongolera ndi momwe makinawo alili pamakina ndi fani.
- Ma bushing onse a transformer ayenera kutsukidwa ndi nsalu yofewa ya thonje chaka chilichonse. Pakutsuka bushing, muyenera kuyang'ana ming'alu.
- Mkhalidwe wa mafuta a OLTC udzawunikidwa chaka chilichonse. Chifukwa chake, chitsanzo cha mafuta chidzatengedwa kuchokera ku valavu yotulutsira madzi ya thanki yopatukana, ndipo chitsanzo cha mafuta chosonkhanitsidwachi chidzayesedwa mphamvu ya dielectric (BDV) ndi chinyezi (PPM). Ngati BDV ndi yotsika, ndipo PPM ya chinyezi ndi yokwera kuposa mtengo wovomerezeka, mafuta omwe ali mkati mwa OLTC ayenera kusinthidwa kapena kusefedwa.
- Kuyang'anira makina a Buchholzzotumizirakuti ichitike chaka chilichonse.
- Mabotolo onse ayenera kutsukidwa mkati kamodzi pachaka. Magetsi onse, zotenthetsera zimawunikidwa kuti ziwone ngati zikugwira ntchito bwino. Ngati sichoncho, muyenera kuchitapo kanthu pokonza. Malumikizidwe onse a ma terminal a control ndi relay wiring ayenera kuwunikidwa kamodzi pachaka.
- Ma relay onse, ma alarm, ndi ma switch owongolera pamodzi ndi ma circuits awo, mu R&C (Control Panel and Relays) ndi RTCC (Remote Tap Change Control Panel), ayenera kutsukidwa ndi kutsukidwa bwino.
- Matumba a OTI, WTI (Chizindikiro cha kutentha kwa mafuta & chizindikiro cha kutentha kwa coil) pamwamba pa chivundikiro cha transformer kuti chiziyang'aniridwa, komanso ngati mafutawo akufunika.
- Ntchito yoyenera ya Pressure Release Device ndi Buchholz relay iyenera kufufuzidwa chaka chilichonse. Chifukwa chake, ma trip contacts ndi ma alarm contacts a zipangizo zomwe zili pamwambapa amafupikitsidwa ndi waya yaying'ono ndikuwona ngati ma relay ofanana nawo mu remote control panel akugwira ntchito bwino.
- Kukana kwa insulation ya transformer ndi polarity index ziyenera kufufuzidwa ndi megger yogwiritsidwa ntchito ndi batire ya 5 kV.
- Kuchuluka kwa kukana kwa kulumikizana kwa nthaka ndi rizer ziyenera kuyezedwa chaka chilichonse ndi chogwirira pa mita yokana nthaka.
- Kusanthula kwa DGA kapena mpweya wosungunuka wa mafuta a transformer kuyenera kuchitika chaka chilichonse pa ma transformer a 132 kV, kamodzi pa zaka ziwiri pa ma transformer osakwana 132 kV, kwa zaka ziwiri pa ma transformer pa 132 kV transformer.
Zochita zoti zichitike kamodzi pa zaka ziwiri zilizonse:
Kuwerengera kwa OTI ndi WTI kuyenera kuchitika kamodzi pa zaka ziwiri zilizonse.
Tan & delta; Kuyeza kwa ma bushings a transformer kuyeneranso kuchitika kamodzi pazaka ziwiri zilizonse
5. Kusamalira transformer kwa theka la chaka
Transformer yanu yamagetsi iyenera kuyesedwa miyezi isanu ndi umodzi iliyonse kuti ione ngati ili ndi IFT, DDA, flash point, kuchuluka kwa matope, acidity, kuchuluka kwa madzi, mphamvu ya dielectric, komanso kukana mafuta a transformer.
6. KusamaliraChosinthira Chamakono
Ma transformer amakono ndi gawo lofunikira pa chipangizo chilichonse chomwe chimayikidwa mu siteshoni yamagetsi kuti chiteteze ndikuyesa magetsi.
Mphamvu yoteteza kutentha ya CT ziyenera kufufuzidwa chaka chilichonse. Poyesa kukana kwa insulation, kumbukirani kuti pali milingo iwiri yotetezera kutentha mu ma transformer amakono. Mlingo wotetezera kutentha wa CT yoyamba ndi wokwera kwambiri, chifukwa uyenera kupirira voltage ya dongosolo. Koma ma CT achiwiri ali ndi mulingo wochepa wotetezera kutentha wa 1.1 kV. Chifukwa chake, ma transformer amakono oyambira mpaka achiwiri ndi oyamba mpaka padziko lapansi amayesedwa mu 2.5 kapena 5 kV meggers. Koma cholumikizira champhamvu ichi sichingagwiritsidwe ntchito poyesa kwachiwiri chifukwa mulingo wotetezera kutentha ndi wotsika poyerekeza ndi momwe kapangidwe kake kamaonera zachuma. Chifukwa chake, cholumikizira chachiwiri chimayesedwa mu 500 V megger. Chifukwa chake, cholumikizira chachikulu kupita padziko lapansi, cholumikizira chachikulu kupita ku secondary measuring core, ndi cholumikizira chachikulu kupita ku secondary core choteteza chimayesedwa mu 2.5 kapena 5 kV meggers.
Kusanthula kwa masomphenya a thermo ya ma terminal oyambira ndi dome la CT yamoyo kuyenera kuchitika kamodzi pachaka. Kusanthula kumeneku kungachitike pogwiritsa ntchito kamera ya Infrared Thermal Surveillance.
Malumikizidwe onse a CT secondary mu bokosi la CT secondary ndi bokosi la CT junction ayenera kufufuzidwa, kutsukidwa, ndi kumangidwa chaka chilichonse kuti atsimikizire njira yochepetsera kukana kwa CT secondary. Komanso, onetsetsani kuti bokosi la CT junction layeretsedwa bwino.
Zogulitsa za MBT Transformer
7. Kusamalira pachaka kwachosinthira magetsima transformer a s kapena capacitor voltage
Chivundikiro cha porcelain chiyenera kutsukidwa ndi zovala za thonje.
Kusonkhanitsira mipata ya spark kudzayang'aniridwa chaka chilichonse. Chotsani gawo losunthika la mipata ya spark mukalumikiza, yeretsani electrode ya braes ndi sandpaper, ndikuyikonzanso pamalo pake.
Malo otsetsereka okhala ndi mafunde amphamvu ayenera kuwonedwa ndi maso chaka chilichonse ngati vuto silikugwiritsidwa ntchito pa PLCC.
Makamera owonera kutentha amagwiritsidwa ntchito kuyang'ana malo aliwonse otentha mu capacitor stacks kuti atsimikizire kuti akatswiri akuwongolera.
Bokosi la PT junction limapangidwa ndi maulumikizidwe apansi omwe amayesedwa kuti ali olimba kamodzi pachaka. Kupatula apo, bokosi la PT junction liyeneranso kutsukidwa bwino kamodzi pachaka.
Mkhalidwe wa ma gasket onse uyeneranso kuwonedwa ndi maso ndikusinthidwa ngati zisindikizo zowonongeka zapezeka.
Nthawi yotumizira: Juni-01-2021