1. Sepheo le mefuta eatransformertlhokomelo
a.Morero oa tlhokomelo ea transformer
Sepheo sa mantlha sa tlhokomelo ea transformer ke ho netefatsa hore transfoma le lisebelisoa tsa kahare le kantle dikarololi bolokiloe li le boemong bo botle, “tse loketseng morero” ’me li ka sebetsa li sireletsehile neng kapa neng.Ntho ea bohlokoa ka ho tšoanang ke ho boloka tlaleho ea histori ea boemo ba transformer.
b.Liforomo tsa tlhokomelo ea Transformer
Li-transformer tsa motlakase li hloka mesebetsi e fapaneng ea tloaelo ea ho lokisa, ho kenyelletsa le ho lekanya le ho lekola liparamente tse fapaneng tsa li-transformer.Ho na le mefuta e 'meli ea mantlha ea tlhokomelo ea transformer.Re etsa sehlopha se le seng nako le nako (se bitsoang tokiso ea thibelo) le sa bobeli ka mokhoa o ikhethileng (ke hore, ha ho hlokahala).
2. Tlhahlobo ea Khoeli le Khoeli ea Periodic Transformer Maintenance
- Boemo ba oli ka har'a sekoahelo sa oli se tlameha ho hlahlojoa khoeli le khoeli e le hore se se ke sa oela ka tlase ho moeli o tsitsitseng, 'me kahoo tšenyo e bakoang ke eona e qojoe.
- Boloka masoba a phefumolohang ka har'a tube ea ho phefumoloha ea silika e hloekile ho netefatsa ts'ebetso e nepahetseng ea ho phefumoloha.
- Haeba oa haumotlakase oa motlakasee na le lihlahla tsa ho tlatsa oli, etsa bonnete ba hore oli e tlatsitsoe ka nepo.
Haeba ho hlokahala, oli e tla tlatsoa ka har'a bushing ho ea boemong bo nepahetseng.Ho tlatsa oli ho etsoa boemong ba ho koala.
3. Tlhokomelo ea Motheo oa Letsatsi le Letsatsi le ho Hlahloba
- Bala MOG (Magnetic Oil Meter) ea tanka e kholo le tanka ea polokelo.
- Mmala oa gel ea silika moeeng.
- Oli e tsoa sebakeng leha e le sefe sa transformer.
Haeba boemo ba oli bo sa khotsofatse MOG, oli e tlameha ho tlatsoa ka har'a transformer, 'me tanka eohle ea transformer e tlameha ho hlahlojoa hore na ho na le ho lutla ha oli.Haeba ho na le ho lutla ha oli, nka khato e hlokahalang ho tiisa ho lutla.Haeba gel ea silica e fetoha pinki hanyenyane, e lokela ho nkeloa sebaka.
4. Kemiso ea motheo ea selemo le selemo ea tlhokomelo ea transformer
- Ts'ebetso ea othomathike, e hole, le ea matsoho ea sistimi e pholileng e bolela hore lipompo tsa oli, libapali tsa moea le lisebelisoa tse ling li ikopanya le sistimi ea ho futhumatsa ea transformer le potoloho ea taolo.Li tla hlahlojoa ka nako ea selemo se le seng.Haeba ho sa sebetse hantle, batlisisa potoloho ea taolo le boemo ba 'mele ba pompo le fan.
- Lihlahla tsohle tsa li-transformer li tlameha ho hloekisoa ka lesela le bonolo la k'hothone selemo le selemo.Nakong ea ho hloekisa bushing e lokela ho hlahlojoa hore na ha ho na mapetsong.
- Boemo ba oli ba OLTC bo tla hlahlojoa selemo le selemo.Ka hona, sampole ea oli e tla nkuoa valve ea drain ea tanka e khelohang, 'me sampole ena e bokelletsoeng ea oli e tla lekoa bakeng sa matla a dielectric (BDV) le mongobo (PPM).Haeba BDV e le tlaase, 'me PPM bakeng sa mongobo e phahametse boleng bo khothalletsoang, oli e ka hare ho OLTC e hloka ho nkeloa sebaka kapa ho sefshoa.
- Tlhahlobo ea mechine ea Buchholzli-relayho etsoa selemo le selemo.
- Lijana tsohle li tlameha ho hloekisoa ho tsoa kahare bonyane hang ka selemo.Mabone ohle, lihitara tsa sebaka li hlahlojoa ho bona hore na li sebetsa hantle.Haeba ho se joalo, o tlameha ho nka khato ea tlhokomelo.Likhokelo tsohle tsa litheminale tsa taolo le lithapo tse tsamaisanang li lokela ho hlahlojoa hore li tiisitsoe bonyane hang ka selemo.
- Li-relay tsohle, lialamo, le li-switches tsa taolo hammoho le li-circuits tsa tsona, ho liphanele tsa R&C (Control Panel and Relays) le RTCC (Remote Tap Change Control Panel), li lokela ho hloekisoa ka ho hloekisoa hantle.
- Lipokotho tsa OTI, WTI (sesupo sa mocheso oa oli & sesupo sa mocheso oa coil) sekoahelong se kaholimo sa transformer hore se hlahlojoe, le haeba oli ea hlokahala.
- Mosebetsi o nepahetseng oa Sesebelisoa sa Phatlalatso ea Khatello le Buchholz relay e tlameha ho hlahlojoa selemo le selemo.Ka hona, lisebelisoa tse kaholimo 'mabitso a maeto le mabitso a alamo a khutsufatsoa ka mohala o monyane' me u shebe hore na li-relay tse amanang le phanele ea taolo e hole li sebetsa ka nepo.
- Tšireletso ea motlakase ea transformer le index ea polarity e tla hlahlojoa ka megger e sebelisoang ka betri ea 5 kV.
- Boleng ba khanyetso ea khokahanyo ea fatše le rizer li lokela ho lekanngoa selemo le selemo ka clamp holim'a metara ea ho hanyetsa lefatše.
- DGA kapa tlhahlobo ea khase e qhibilihisitsoeng ea oli ea transformer e lokela ho etsoa selemo le selemo bakeng sa li-transformer tsa 132 kV, hang ka lilemo tse 2 bakeng sa li-transformer tse ka tlase ho 132 kV, ka lilemo tse peli bakeng sa li-transformer ho 132 kV transformer.
Ketso e lokelang ho nkuoa hang ka mor'a lilemo tse ling le tse ling tse peli:
Tekanyo ea OTI le WTI e tlameha ho etsoa hang ka mor'a lilemo tse ling le tse ling tse peli.
Tan & delta;Tekanyo ea lihlahla tsa transformer le eona e tla etsoa hang ka lilemo tse peli
5. Tlhokomelo ea li-transformer ka nako ea halofo ea selemo
Transformer ea hau ea matla e hloka ho lekoa likhoeling tse ling le tse ling tse tšeletseng bakeng sa IFT, DDA, flash point, sludge content, acidity, metsi a mangata, matla a dielectric, le ho hanyetsa oli ea transformer.
6. Tlhokomelo eaTransformer ea hajoale
Li-transformer tsa hajoale ke karolo ea bohlokoa ea lisebelisoa life kapa life tse kentsoeng seteisheneng sa motlakase ho sireletsa le ho metha motlakase.
Matla a insulation a CT e tlameha ho hlahlojoa selemo le selemo.Ts'ebetsong ea ho lekanya khanyetso ea insulation, e tlameha ho hopoloa hore ho na le maemo a mabeli a ho kenya letsoho ho li-transformer tsa hona joale.Boemo ba ho kenya letsoho ba CT ea mantlha bo batla bo phahame, kaha bo tlameha ho mamella motlakase oa sistimi.Empa CT's ea bobeli e na le boemo bo tlase ba insulation ka kakaretso ba 1.1 kV.Ka hona, tse ka sehloohong ho ea ho tsa bobeli le tse ka sehloohong ho lefats'e tsa li-transformer tsa morao-rao li lekantsoe ka 2.5 kapa 5 kV meggers.Empa megger ena e phahameng ea motlakase e ke ke ea sebelisoa bakeng sa litekanyo tsa bobeli kaha boemo ba ho kenya letsoho bo tlase haholo ho latela maemo a moruo a moralo.Ka hona, insulation ea bobeli e lekantsoe ka 500 V megger.Ka hona, terminal ea mantlha ea lefats'e, terminal ea mantlha ho ea bohareng ba ho metha ea bobeli, le terminal ea mantlha ho ea setsing sa ts'ireletso se lekantsoe ka 2.5 kapa 5 kV meggers.
Tlhahlobo ea pono ea Thermo ea li-terminals tsa mantlha le dome e holimo ea CT e phelang e lokela ho etsoa bonyane hang ka selemo.Scan ena e ka etsoa ka thuso ea Khamera ea Infrared Thermal Surveillance Camera.
Likhokahanyo tsohle tsa bobeli tsa CT ka lebokoseng la bobeli la CT le lebokose la CT junction li tlameha ho hlahlojoa, ho hloekisoa le ho tiisoa selemo le selemo ho netefatsa tsela e tlase e ka khonehang ea CT ea bobeli ea khanyetso.Hape, etsa bonnete ba hore lebokose la CT junction le hloekisoa ka nepo.
Lihlahisoa tsa MBT Transformer
7. Tlhokomelo ea selemo eamotlakase oa motlakases kapa li-capacitor voltage transformers
Sekoahelo sa porcelain se tlameha ho hloekisoa ka liaparo tsa k'hothone.
Kopano ea spark gap e tla hlahlojoa selemo le selemo.Tlosa karolo e tsamaeang ea lekhalo la spark ha u kopanya, hloekisa electrode ea braes ka sandpaper, 'me u e lokise hape sebakeng.
Sebaka sa maemo a holimo se lokela ho hlahlojoa ka mahlo selemo le selemo haeba taba e sa sebelisoe bakeng sa PLCC.
Likh'amera tsa pono tse futhumetseng li sebelisoa ho lekola libaka tse chesang ka har'a mekotla ea capacitor ho netefatsa ts'ebetso ea ho lokisa ea litsebi.
Khokahano ea litheminale Lebokose la mateano la PT le na le likhokahano tsa fatše tse lekiloeng bakeng sa ho tiea hang ka selemo.Ntle le moo, lebokose la PT junction le lona le tlameha ho hloekisoa hantle hang ka selemo.
Boemo ba likarolo tsohle tsa gasket le tsona li lokela ho hlahlojoa ka mahlo le ho nkeloa sebaka haeba ho fumanoa litiiso tse senyehileng.
Nako ea poso: Jun-01-2021