Dry-type transformer inoreva shanduko yemagetsi ine musimboti uye mhepo isina kunyudzwa mumafuta ekudzivira uye inotora kutonhora kwechisikigo kana kutonhora kwemhepo. Sechishandiso chekupedzisira-chiri kubuda chekugovera magetsi, chave chichishandiswa zvakanyanya mukufambisa kwemagetsi uye shanduko masisitimu mumashopu efekitori, zvivakwa zvepamusoro-soro, nzvimbo dzekutengesa, nhandare dzendege, madoko, nzira dzepasi, mapuratifomu emafuta nedzimwe nzvimbo, uye inogona kusanganiswa nekuchinja. makabati kuti aumbe compact yakakwana substation.
Parizvino, akawanda akaoma-mhando simba transformers ari matatu-chikamu chakasimba-chakaumbwa SC akatevedzana, akadai: SCB9 akatevedzana matatu-chikamu chinomonereka transformers, SCB10 akatevedzana matatu-chikamu foil transformers, SCB9 akatevedzana matatu-chikamu foil transformers. Mwero wevoltage waro unowanzo muhuwandu hwe6-35KV, uye huwandu hwepamusoro hunogona kusvika 25MVA.
■ Maumbirwo emhando dzakaoma-mhando transformers
1. Vhura mhando: Iyo inowanzoshandiswa fomu. Muviri wayo wakanangana nemhepo. Inokodzera nzvimbo dzakaoma uye dzakachena dzemukati (apo tembiricha yepakati iri 20 madhigirii, hunyoro hwehukama haufanire kudarika 85%). Kazhinji pane nzira mbiri dzekutonhodza: kuzvitonhodza nemhepo uye kutonhora kwemhepo.
2. Rudzi rwakavharwa: Muviri uri muhombodo yakavharwa uye hausi kutarisana zvakananga nemhepo (nekuda kwekusaisa chisimbiso uye mamiriro ekupisa kupisa, inonyanya kushandiswa mumigodhi uye inoputika-uchapupu).
3. Mhando yekukanda: Kukandira ne epoxy resin kana mamwe marekeni sechinhu chikuru chekudzivirira, ine chimiro chakareruka uye hukuru huduku, uye inokodzera vashanduri vane simba duku.
■ Kutonhodza nzira dzekuoma-mhando transformers
Nzira dzekutonhodza dzemhando dzakaoma-shanduko dzakakamurwa kuita mhepo yemhepo inotonhorera (AN) uye yekumanikidza kutonhora kwemhepo (AF). Kana yatonhodzwa zvechisikigo, transformer inogona kushanda nguva dzose kwenguva yakareba pachiyero chakayerwa. Kana kutonhora kwemhepo kunomanikidzwa kunoshandiswa, iyo inobuda simba retransformer inogona kuwedzerwa ne50%. Inokodzera kupindirana kwekuremedza mashandiro kana mashandiro ekukurumidzira kuwandisa; nekuda kwekuwedzera kukuru kwekurasikirwa kwemutoro uye impedance voltage panguva yekuremerwa, iri munzvimbo isiri yehupfumi, saka haifanirwe kubvumidzwa kushanda ichienderera kwenguva yakareba.
■ Mhando dzakaoma-mhando transformers
1. Inpregnated air-insulated dry-type transformers: Parizvino, haisati yashandiswa. Winding conductor insulation uye insulation structure zvinhu zvinosarudzwa kubva kune insulation zvinhu zvemagiredhi akasiyana-siyana anodzivirira kupisa zvinoenderana nezvinodiwa kugadzira Kirasi B, Kirasi F uye Kirasi H insulation yakaoma-mhando yemagetsi.
2. Epoxy resin cast dry-type transformers: Zvinhu zvekudzivirira zvinoshandiswa ndeyepolyester resin uye epoxy resin. Parizvino, cast insulation yakaoma-mhando magetsi ekushandura anonyanya kushandisa epoxy resin.
3. Yakaputirwa insulation yakaoma-mhando transformers: Yakaputirwa insulation yakaoma-mhando transformers zvakare mhando ye resin insulation. Parizvino, kune vashoma vanogadzira.
4. Composite insulation yakaoma-mhando transformers:
(1) High-voltage windings inoshandisa cast insulation, uye low-voltage windings inoshandisa inpregnated insulation;
(2) Magetsi akakwira anoshandisa insulation, uye low voltage inoshandisa foil maronda ane foil yemhangura kana aluminium foil.
■ Ndedzipi zvakanakira matransfoma emhando yakaoma zvichienzaniswa nemafuta akanyudzwa?
1. Dry-type power transformers inogona kudzivirira njodzi yemoto uye kuputika kwemafuta ekushandura nekuda kwekukundikana panguva yekushanda. Sezvo zvigadzirwa zvekudzivirira zvemhando dzakaoma-shanduko zvinhu zvese zvinopisa moto, kunyange kana transformer ikakundikana panguva yekushanda uye ichikonzera moto kana kune kunze kwemoto sosi, moto hauzowedzerwe.
2. Dry-type power transformers haizove nematambudziko ekubuda kwemafuta semafuta-akanyudzwa transformers, uye hapazovi nezvinetso zvakadai sekukwegura kwemafuta. Kazhinji, kushanda, kugadzirisa uye kugadzirisa basa rekuoma-mhando magetsi ekushandura kunoderedzwa zvakanyanya, uye kunyange kuchengetedza-kusina.
3. Dry-type magetsi emagetsi anowanzo midziyo yemukati, uye inogonawo kugadzirwa kunze kwenzvimbo dzine zvakakosha zvinodiwa. Inogona kuiswa muimba imwe chete nekabati yekushandura kuderedza nzvimbo yekuisa.
4. Sezvo yakaoma-mhando yemagetsi emagetsi asina mafuta, ane zvishongedzo zvishoma, hapana makabati ekuchengetedza mafuta, kuchengetedzwa kwemhepo, nhamba huru yevhavha uye zvimwe zvikamu, uye hapana matambudziko ekuvhara.
■ Kuiswa uye kutumirwa kwema-hard-type transformers
1. Kuvhura kuongorora kusati kwaiswa
Tarisa uone kana kurongedza kwacho kwakamira. Mushure mekusunungura transformer, tarisa kana iyo transformer nameplate data inosangana nezvinodiwa zvekugadzira, kana magwaro efekitari akakwana, ingave iyo transformer yakasimba, kana paine zviratidzo zvekukuvadza kwekunze, kana zvikamu zvakabviswa uye kukuvara, ingave tsigiro yemagetsi kana waya dzekubatanidza dzakakuvadzwa, uye pakupedzisira tarisa kana zvikamu zvakasara zvakakuvadzwa uye zvipfupi.
2. Transformer kuiswa
Chekutanga, tarisa hwaro hwetransformer kuti uone kana simbi yakamisikidzwa ndiro iri nhanho. Panofanira kunge pasina maburi pasi peplate yesimbi kuti ive nechokwadi chekuti hwaro hweshanduko ine yakanaka seismic kupikisa uye kuita kwekurira kwekuita, kana zvisina kudaro ruzha rweshanduko yakaiswa inowedzerwa. Zvadaro, shandisa roller kuti uendese transformer kunzvimbo yekuisa, bvisa roller, uye unyatsogadzirisa transformer panzvimbo yakagadzirwa. Iko kukanganisa kwemazinga ekuisa kunosangana nezvinodiwa zvekugadzira. Pakupedzisira, weld mana mapfupi chiteshi simbi pane yakamisikidzwa simbi ndiro, pedyo nemakona mana echigadziko che transformer, kuitira kuti transformer irege kufamba panguva yekushandiswa.
3. Transformer wiring
Kana wiring, iyo diki chinhambwe pakati pezvikamu mhenyu uye mhenyu zvikamu kusvika pasi zvinofanirwa kuve nechokwadi, kunyanya chinhambwe kubva kune tambo kuenda kune yakakwira-voltage coil. Iyo yakakwira-ikozvino yakaderera-voltage busbar inofanirwa kutsigirwa yakaparadzana uye haigone kukwenenzverwa zvakananga pane yetransformer terminal, iyo inoburitsa yakawandisa mechani tension uye torque. Kana yazvino yakura kupfuura 1000A (yakadai se2000A low-voltage busbar inoshandiswa muchirongwa ichi), panofanirwa kuve nekubatana kunochinjika pakati pebhazi netransformer terminal kutsiva kuwedzera kwekupisa nekumisikidza kwekondakita uye kuparadzanisa kuzunguzika. yebhasibar uye transformer. Iwo magetsi ekubatanidza panzvimbo yega yega yekubatanidza anofanirwa kuchengetedza inodiwa yekumanikidza, uye elastic zvinhu (senge disc-yakaita epurasitiki mhete kana spring washers) inofanira kushandiswa. Paunenge uchisimbisa mabhaudhi ekubatanidza, torque wrench inofanira kushandiswa.
4. Transformer grounding
Nzvimbo yekugadzika ye transformer iri pachigadziko chepasi-voltage side, uye yakakosha bhoti yepasi inotungamirwa kunze ine nzvimbo yepasi yakanyorwa pairi. Iyo yekugadzika kweiyo transformer inofanirwa kuve yakavimbika yakabatana kune inodzivirira yepasi system kuburikidza neiyi nhanho. Kana iyo transformer iine casing, iyo casing inofanira kuvimbika yakabatana neiyo grounding system. Kana iyo yakaderera-voltage side inotora matatu-phase mana-waya system, iyo isina kwayakarerekera mutsetse inofanira kuvimbika yakabatana neiyo grounding system.
5. Transformer kuongorora isati yashanda
Tarisa kana zvese zvinosungirirwa zvakasununguka, kana kubatana kwemagetsi kwakaringana uye kwakavimbika, ingave nhambwe yekudzivirira pakati pezvikamu zvipenyu uye zvikamu zvipenyu pasi zvinosangana nemirairo, hapafanirwe kunge paine nyaya yekune dzimwe nyika padhuze neshanduko, uye coil pamusoro inofanira. uve wakachena.
6. Transformer commissioning isati yashanda
(1) Tarisa muyero yetransformer neboka rekubatanidza, kuyera kupikisa kweDC kweyakakwira uye yakaderera voltage windings, uye enzanisa zvawanikwa nedata rekuyedza fekitori rakapihwa nemugadziri.
(2) Tarisa kudzivirira kwekudzivirira pakati pemakoiri uye coil kusvika pasi. Kana kupikisa kwekudzivirira kwakanyanya kuderera pane data yekuyera fekitori yemidziyo, inoratidza kuti transformer inonyorova. Kana kudzivirira kwekudzivirira kwakaderera kupfuura 1000Ω/V (kushanda kwemagetsi), transformer inofanira kuomeswa.
(3) Iyo yekuyedza voltage yestanding voltage test inofanirwa kuenderana nemirairo. Paunenge uchiita iyo yakaderera-voltage inomira voltage bvunzo, tembiricha sensor TP100 inofanira kubviswa. Mushure mekuedzwa, sensor inofanirwa kudzoserwa kunzvimbo yayo yekutanga munguva.
(4) Kana transformer yakashongedzerwa feni, feni inofanirwa kuve yakabatidzwa uye kuve nechokwadi kuti inoshanda zvakajairwa.
7. Kuedza kushanda
Mushure mekunge transformer yanyatsoongororwa isati yaiswa mukushanda, inogona kuiswa simba kuti ishande. Munguva yekushanda kwekuedza, kunyanya kukoshesa kunofanira kubhadharwa kutarisa pfungwa dzinotevera. Kungave kune ruzha rusina kujairika, ruzha uye kutenheka. Kana kune kunhuwa kusina kujairika sekunhuwa kwekutsva. Kana paine discoloration nekuda kwekupisa kwenzvimbo. Kana kufefetera kwakanaka here. Mukuwedzera, pfungwa dzinotevera dzinofanirawo kuonekwa.
Chekutanga, kunyangwe ma transformer emhando yakaoma anoshingirira kunyorova, anowanzo kuvhurika zvimiro uye achiri kubatwa nekunyorova, kunyanya iwo akaoma-mhando transformer anogadzirwa munyika yangu ane yakaderera insulation level (yakaderera insulation giredhi). Naizvozvo, yakaoma-mhando transformer inogona chete kuwana yakakwirira kuvimbika kana ichishandiswa pane imwe humidity iri pasi pe70%. Dry-type transformers inofanirawo kudzivirira kuvhara kwenguva refu kudzivirira hunyoro hwakakomba. Kana iyo insulation yekudzivirira kukosha yakaderera pane 1000/V (inoshanda voltage), zvinoreva kuti transformer yakanyorova zvakanyanya uye kushanda kwekuyedza kunofanirwa kumiswa.
Chechipiri, iyo yakaoma-mhando transformer inoshandiswa nhanho-kumusoro mumagetsi emagetsi yakasiyana nemafuta-akanyudzwa transformer. Izvo zvinorambidzwa kushanda pasi-voltage side mumhepo yakazaruka kuti udzivise overvoltage padivi regridhi kana mheni inorova pamutsetse, izvo zvinogona kuita kuti kuvharwa kweiyo yakaoma-mhando transformer iparadzwe. Kuti udzivise kukuvadzwa kwekufambiswa kwe overvoltage, seti yezvidziviriro zve overvoltage (zvakadai seY5CS zinc oxide arresters) zvinofanirwa kuiswa padivi revoltage bhazi reiyo dry-type transformer.
Nguva yekutumira: Sep-03-2024