UHV imatha kupititsa patsogolo mphamvu zotumizira mphamvu za gridi yadziko langa.Malinga ndi zomwe State Grid Corporation yaku China yapereka, grid yamagetsi ya UHV DC yagawo loyambira imatha kufalitsa magetsi okwana ma kilowatts 6 miliyoni, omwe ndi ofanana ndi 5 mpaka 6 kuposa gridi yamagetsi yomwe ilipo ya 500 kV DC, komanso mtunda wotumizira mphamvu ndi 2 mpaka 3 nthawi yomaliza.Choncho, dzuwa kwambiri bwino.Komanso, malinga ndi mawerengedwe a State Grid Corporation of China, ngati kufala mphamvu ya mphamvu yomweyo ikuchitika, ntchito UHV mizere akhoza kupulumutsa 60% ya chuma dziko poyerekeza ndi kugwiritsa ntchito 500 kV mkulu-voteji mizere. .
Transformers ndi zida zofunika kwambiri m'mafakitale amagetsi ndi ma substation.Iwo ali ndi mphamvu yofunikira pa ubwino wa magetsi ndi kukhazikika kwa ntchito yamagetsi.Ma transformer a Ultra-high voltage ndi okwera mtengo ndipo ali ndi ntchito zolemetsa.Chifukwa chake, ndikofunikira kwambiri kulimbitsa kafufuzidwe pakuwongolera zolakwika zawo.
Transformer ndiye mtima wamagetsi amagetsi.Ndikofunikira kwambiri kusunga ndi kukonzanso thiransifoma kuti zitsimikizire kugwira ntchito mokhazikika kwa dongosolo lamagetsi.Masiku ano, dongosolo lamagetsi la dziko langa likukula mosalekeza kutengera mphamvu yamagetsi okwera kwambiri komanso mphamvu yayikulu.Kuphimba ndi mphamvu ya maukonde magetsi akuchulukirachulukira pang'onopang'ono, kupanga thiransifoma pang'onopang'ono kukula mu malangizo kopitilira muyeso voteji ndi lalikulu mphamvu.Komabe, kukwezeka kwa thiransifoma kumawonjezera mwayi wolephera, komanso kuwonongeka kwakukulu komwe kumachitika chifukwa cha kulephera kwa thiransifoma.Choncho, kusanthula kulephera, kukonza ndi kukonza ma ultra-high-transformer ndi kayendetsedwe ka tsiku ndi tsiku ndizofunikira kulimbikitsa bata ndi chitetezo cha mphamvu zamagetsi.Kukwera kumwamba ndikofunikira.
Kusanthula Zomwe Zimayambitsa Zolakwika Zomwe Zimayambitsa
ultra-high voltage transformer zolakwika nthawi zambiri zimakhala zovuta.Kuti muzindikire zolakwika za thiransifoma, ndikofunikira kumvetsetsa kaye zomwe zimayambitsa zosintha:
1. Kusokoneza mzere
Kusokoneza kwa mzere, komwe kumadziwikanso kuti line inrush current, ndizomwe zimayambitsa zolakwika za transformer.Zimayamba chifukwa cha kutseka kwamagetsi, nsonga yamagetsi, vuto la mzere, flashover ndi zolakwika zina pakufalitsa ndi kugawa.
2. Kuwotcha kukalamba
Malinga ndi ziwerengero, kutchinjiriza kukalamba ndi chifukwa chachiwiri cha kulephera kwa thiransifoma.Kukalamba kwa insulation kudzafupikitsa kwambiri moyo wautumiki wa thiransifoma ndikupangitsa kulephera kwa thiransifoma.Deta ikuwonetsa kuti ukalamba wotchinjiriza umachepetsa moyo wautumiki wa thiransifoma ndi moyo wautumiki wazaka 35 mpaka 40.avareji amafupikitsidwa mpaka zaka 20.
3. Zochulukira
Kuchulukitsitsa kumatanthauza kugwira ntchito kwanthawi yayitali kwa thiransifoma ndi mphamvu yopitilira dzina la dzina.Izi nthawi zambiri zimachitika m'mafakitale opangira magetsi komanso m'madipatimenti ogwiritsa ntchito mphamvu.Pamene nthawi yochuluka yogwira ntchito ikuwonjezeka, kutentha kwa insulation kumawonjezeka pang'onopang'ono, zomwe zimafulumizitsa ntchito ya insulation.Kukalamba kwa zigawo, kukalamba kwa gawo lotetezera, ndi kuchepetsa mphamvu ndizosavuta kuonongeka ndi zotsatira zakunja, zomwe zimapangitsa kulephera kwa transformer.
4. Kuyika kolakwika.Zosayenera
Kusankhidwa kwa zida zodzitchinjiriza ndi chitetezo chosakhazikika kungayambitse zoopsa zobisika za kulephera kwa thiransifoma.Nthawi zambiri, kulephera kwa thiransifoma chifukwa cha kusankha kolakwika kwa zida zoteteza mphezi, kuyika molakwika kwa ma relay oteteza ndi zowononga ma circuit ndizofala kwambiri.
5. Zosayenera
kukonza Palibe kulephera pang'ono kwa thiransifoma wokwera kwambiri chifukwa cha kusamalidwa bwino tsiku ndi tsiku.Mwachitsanzo, kusamalidwa kosayenera kumapangitsa kuti transformer ikhale yonyowa;submersible mafuta mpope kukonza si pa nthawi yake, kuchititsa mkuwa ufa wosakanizidwa thiransifoma ndi kuyamwa mpweya m'dera loipa;waya wolakwika;kugwirizana kotayirira ndi kupanga kutentha;Chosinthira chopopera sichikupezeka, ndi zina.
6. Kupanga kosakwanira
Ngakhale zolakwika za ultra-high-high-transformer zomwe zimayambitsidwa ndi kusachita bwino kwadongosolo ndizochepa chabe, zolakwika zomwe zimachitika chifukwa chazifukwa izi nthawi zambiri zimakhala zazikulu komanso zovulaza.Mwachitsanzo, malekezero a waya, zotayira, kuwotcherera kosakwanira, kukana kwafupipafupi, ndi zina zambiri, nthawi zambiri zimachitika chifukwa cha zolakwika zamapangidwe kapena kusapanga bwino.
Kuzindikira zolakwika ndi chithandizo
1. Zolakwa A
thiransifoma ali voteji oveteredwa (345 ± 8) × 1.25kV/121kV/35kV, ndi mphamvu oveteredwa 240MVA/240MVA/72MVA, ndi thiransifoma waukulu wakhala ntchito khola m'mbuyomu.Tsiku lina, kusanthula kwanthawi zonse kwa chromatographic kwa chosinthira chachikulu kunachitika, ndipo zidapezeka kuti ma acetylene omwe ali mumafuta oteteza thupi la thiransifoma anali 2.3 μl / l, kotero zitsanzo zidatengedwa kawiri masana ndi madzulo. tsiku lomwelo kutsimikizira kuti acetylene zili mu thiransifoma mafuta thupi mu gawoli anali achuluka kwambiri.Idawonetsa mwachangu kuti mkati mwa thiransifoma munatuluka chodabwitsa, kotero thiransifoma yayikulu idatsekedwa m'mawa kwambiri tsiku lotsatira.
2. Chithandizo chapamalo
Kuti mudziwe mtundu wa cholakwika cha transformer ndi malo otulutsira, kuwunika kotsatiraku kunachitika:
1) Njira yamakono ya pulse, kupyolera mu kuyesa kwamakono, kunapezeka kuti ndi kuwonjezeka kwa voteji yoyesera ndi kuwonjezeka kwa nthawi yoyesera, mphamvu yotulutsa pang'ono ya transformer inakula kwambiri.Magetsi oyambitsa kutulutsa ndi magetsi ozimitsa pang'onopang'ono amachepetsa pamene mayeso akupita;
2) Muyeso wa kutulutsa pang'ono kwa sipekitiramu.Pakuwunika chithunzi chomwe chapezeka, zitha kutsimikiziridwa kuti gawo lotulutsa la thiransifoma lili mkati mwamapiringa;
3) Akupanga malo a kumaliseche pang'ono.Kudzera angapo tsankho kumaliseche akupanga kutanthauzira mayesero, kachipangizo anasonkhanitsa munthu ofooka ndi wosakhazikika akupanga zizindikiro pamene voteji anali mkulu, amene anatsimikizira kamodzinso kuti kumaliseche malo ayenera ili mkati mokhotakhota;
4) Mayeso a chromatography yamafuta.Pambuyo poyesa kutulutsa pang'ono, gawo la acetylene linakwera kufika pa 231.44 × 10-6, kusonyeza kuti panali kutulutsa kwamphamvu kwa arc mkati mwa thiransifoma panthawi ya kuyesa kwapang'ono.
3. Kulephera chifukwa kusanthula
Malingana ndi kusanthula kwapamalo, zikhulupiliro kuti zifukwa za kulephera kutulutsa ndizo zotsatirazi:
1) Insulating makatoni.The processing wa insulating makatoni ali ndi mlingo wina wa kubalalitsidwa, kotero insulating makatoni ali ndi zolakwika zina khalidwe, ndi kugawa magetsi munda kusintha ntchito;
2) Mphepete mwachitsulo chotchinga cha electrostatic ya coil yowongolera ma voltage sikwanira.Ngati utali wa curvature ndi wocheperako, mphamvu yofananira voteji si yabwino, zomwe zingayambitse kutayika kwamadzi pamalo awa;
3) Kusamalira tsiku ndi tsiku sikokwanira.Zida zonyowa pokonza, siponji ndi zinyalala zina ndi chimodzi mwa zifukwa za kulephera kutulutsa.
Kukonza kwa thiransifoma
adatenga njira zosamalira zotsatirazi kuti athetse vuto lotulutsa:
1) Zigawo zowonongeka ndi zokalamba zidasinthidwa, ndipo malo owonongeka a koyilo yamagetsi otsika ndi magetsi oyendetsa magetsi adakonzedwanso, motero kumapangitsa kuti mphamvu zotsekemera zitheke pamenepo.Pewani kuwonongeka komwe kumachitika chifukwa cha kutulutsa.Panthawi imodzimodziyo, poganizira kuti kusungunula kwakukulu kumawonongekanso pang'onopang'ono panthawi ya kusweka, kutsekemera konse kwakukulu pakati pa coil yotsika-voltage ndi coil yoyendetsa magetsi yasinthidwa;
2) Chotsani zingwe za equipotential pazithunzi za electrostatic.Tsegulani, chotsani mgoza wamadzi wotuluka, onjezani utali wopindika wa ngodya ndikukulunga kutchinjiriza, kuti muchepetse mphamvu yakumunda;
3) Malinga ndi zofunikira za 330kV thiransifoma, thupi la chosinthiracho lamizidwa bwino mumafuta ndikuwumitsa popanda gawo.Mayeso otulutsa pang'ono amayeneranso kuchitidwa, ndipo amatha kulipiritsa ndikuchitidwa pokhapokha atapambana mayeso.Kuonjezera apo, pofuna kupewa kubweranso kwa zolakwika zotuluka, kukonzanso tsiku ndi tsiku ndi kasamalidwe ka thiransifoma kuyenera kulimbikitsidwa, ndipo kuyesa kwa chromatography ya mafuta kuyenera kuchitidwa pafupipafupi kuti azindikire zolakwika m'nthawi yake ndikumvetsetsa zomwe ali nazo.Zolakwa zikapezeka, njira zosiyanasiyana zaukadaulo ziyenera kugwiritsidwa ntchito kuweruza vutolo ndikuwongolera munthawi yake.
Mwachidule, zomwe zimayambitsa ma voltage opitilira muyeso ndizovuta kwambiri, ndipo njira zosiyanasiyana zamaukadaulo ziyenera kugwiritsidwa ntchito pakuwongolera zolakwika pamalopo, ndipo zomwe zimayambitsa ziyenera kufufuzidwa mwatsatanetsatane.Komabe, ndikofunikira kudziwa kuti ma ultra-high voltage transformers ndi okwera mtengo komanso ovuta kuwasamalira.Pofuna kupewa kulephera, kukonza ndi kuyang'anira tsiku ndi tsiku kuyenera kuchitidwa bwino kuti kuchepetsa mwayi wolephera.
Nthawi yotumiza: Nov-26-2022