Izici kanye Nokusetshenziswa kwe-Dry Type Transformer

Njengamanje, ama-transformer anamandla omile aseShayina ayingxenye enkulu yesigaba sesithathu sokwakha uchungechunge lwe-SC, njenge: i-transformer yokugoqa yesigaba sesithathu yesigaba se-SCB9, i-transformer ye-foil yesigaba sesithathu yesigaba se-SCB10. Izinga layo lamandla kagesi ngokuvamile liphakathi kuka-6-35kV, amandla aphezulu afinyelela ku-25MVA. I-transformer eyomile ihlukaniswe kakhulu nge-transformer eyomile efakwe ngaphakathi kanye ne-transformer eyomile ye-resin izigaba ezimbili.

1. I-transformer yohlobo olomile efakwe emanzini

Intambo ye-transformer yohlobo olomile efakwe eShayina imbozwe ngentambo yengilazi, futhi i-pad icindezelwa ngokushisa ngezinto zokuvikela ezihambisanayo. Isetshenziswa kakhulu eziteshini zikagesi zamanzi kanye nezakhiwo eziphakeme ezinokumelana okuhle nomlilo.

Ngenxa yomehluko wopende ofaka umoya, ukufakelwa komshini wokuguqula kuhlukaniswe phakathi kwe-B, F, H, C, ukufakelwa komshini oyinhloko kanye nokuqondile (ukufakelwa komshini oyinhloko phakathi kokufakelwa komshini nokugoba kanye naphakathi kokufakelwa komshini nokugoba komshini okuyinhloko.

Ukufakwa komoya okuqondile kubhekisela ekufakweni komoya phakathi kwamaphuzu ahlukene kanye nezingxenye ezahlukene zokufakwa komoya okuguquguqukayo okunamandla ahlukene, okuhlanganisa kakhulu ukusebenza kokufakwa komoya phakathi kokujika, izendlalelo kanye nezingxenye zokufakwa komoya. Umoya usetshenziswa njengendawo yokufakwa komoya okushisayo.

Lolu hlobo lwe-transformer luthinteka yimvelo kune-transformer eyomile yohlobo lwe-resin, ukubukeka nesisindo nakho kukhulu, umkhiqizo ekhaya nakwamanye amazwe uvame ukuncipha.

Kukhona izimbobo zokugcina kuzo zombili izinhlangothi zokugoba, angesabi ukugcwala kwamanzi, ukumelana nomlilo okunamandla, ukuvimbela umlilo emlilweni ovulekile ku-750 ℃, uhlobo olusha lwe-transformer eyomile.1.2 I-transformer eyomile ye-resin egameni le-transformer yasekhaya yanamuhla eholayo ingahlukaniswa ngezigaba ezintathu ezilandelayo.

Uhlobo lokuqala, olubizwa ngokuthi i-transformer ye-wire wound casting, i-voltage yalo ephezulu iwukuphotha isilinda esiphukayo se-wire wound, i-voltage ephansi iwukuphotha isilinda esiphukile se-wire wound (noma isilinda esihlukanisiwe); i-Li Qian, i-Shaanxi provincial Electric Power (group) Co., LTD. Qaphela ukuthi akukho ukuphotha okugcwalisiwe.

Uhlobo lwesibili, olubizwa ngokuthi i-transformer yokuphonsa i-foil-wound, i-voltage yayo ephezulu iwuhlobo lokuphonsa i-foil-wound oluhlukaniswe ngezigaba, i-voltage ephansi uhlobo lokugoqa i-foil yethusi (noma i-aluminium foil); Ukuphonsa kuphonswa nge-filler.

Uhlobo lwesithathu, ukucindezela okuphezulu kohlobo lokuthulula isilinda esiphuka ngocingo, uhlobo lokugoqa lwe-copper foil (noma i-aluminium foil) olunomfutho ophansi; Ukuphonswa kuphonswa ngaphandle kokugcwalisa.

Izinhlobo ezintathu zemikhiqizo ezingenhla zinezici zazo ekukhiqizweni nasekusebenzeni kwemikhiqizo, futhi njengamanje zithatha isabelo esithile semakethe emakethe. Kulesi sihloko, sigxila engxoxweni yama-transformer athulula i-wire wound.

2. I-transformer ye-cast cast yenxeba lensimbi

2.1. Izici zesakhiwo

Esitshalweni sesibili samandla saseBaoji, esifundazweni saseShaanxi, ama-transformer omile asetshenziswa efektri angama-transformer agcwele ngocingo, anezinga le-voltage elingu-6 kV, amandla angu-100 kVA kuya ku-1600 kVA, kanye nokufakwa ngaphakathi.

Ama-windings aphezulu naphansi omkhiqizo enziwe ngocingo lwethusi, agcwele inxeba, aqiniswe ngefayibha yengilazi, afakwe umswakama omncane, i-resin engenawo umgcwalisi, afakwe ngaphansi kwesimo se-vacuum, futhi aqiniswe ngokwendlela ethile yokushisa.

Ukugoqana kwamandla aphezulu kusebenzisa isakhiwo sesilinda esihlukaniswe ngokwezigaba, kanti ukugoqana kwamandla aphansi kusebenzisa uhlobo lwesilinda olunezingqimba eziningi, uhlobo lwesilinda oluhlukaniswe ngokwezigaba noma uhlobo lwesilinda oluhlukaniswe ngokwezigaba ngokwezinga le-voltage.

2.2 Izici Zobuchwepheshe

2.2.1 Ukumelana nomthelela wentambo, ukuthululwa kwe-transformer hv winding kusebenzisa isakhiwo esikhethekile se-cylindrical sectional, lesi sakhiwo sisekelwe ekujikelezeni kwe-bobbin section common, uhlobo olujwayelekile lwesilinda olungaphansi luzuze izinzuzo zokumelana nomthelela we-bobbin winding, futhi luxazulule ungqimba lwe-bobbin winding lwe-voltage ephezulu phakathi kokuphikisana, luyisakhiwo esihle kakhulu sokugoba, sivame ukubizwa ngokuthi isakhiwo sokugoba esingesi-resonant.

Uma kuqhathaniswa nesilinda esivamile esihlukaniswe ngezigaba, isilinda esihlukaniswe ngezigaba esikhethekile singanciphisa kakhulu i-voltage phakathi kwezingqimba, sithuthukise ukusatshalaliswa kwe-voltage, futhi sithuthukise kakhulu amandla omthelela ukuze simelane ne-overvoltage esemoyeni kanye ne-overvoltage esebenzayo.

Ukumelana nomthelela akuhlobene nje kuphela nesakhiwo sokugoqa, kodwa futhi kuncike ekhwalithini yokuphotha yokugoqa kanye nezakhiwo zikagesi zezinto zokufaka umswakama.

Ngemva kokuqedwa kokugoqa umkhiqizo, uthululwa nge-resin emsulwa esimweni se-vacuum, futhi akukho filler eyengeziwe, ukuze ukusebenza kokugeleza kwe-resin kunganciphi.

Futhi ngenxa yokuthi ukugoqa kugoqwa ngocingo, i-resin ingagcwalisa ngokuphelele ukugoqa, kungakhathaliseki ukuthi isuka ohlangothini lwe-axial noma lwe-radial lokugoqa, futhi akukho bhamuza ngaphakathi.

Isifinyezo: Leli phepha lethula ukuhlukaniswa kanye nezici ze-transformer eyomile, futhi ligxile ezicini zesakhiwo se-transformer yokuthulula inxeba lensimbi, izici zobuchwepheshe, uhlelo lokupholisa, uhlelo lokulawula izinga lokushisa nokunye, lifingqe ithemba lokuthuthukiswa kwe-transformer eyomile. Amagama ayisihluthulelo: i-transformer eyomile; Ukuhlukaniswa kwe-transformer ephosa inxeba lensimbi.

I-resin ne-glass fiber ezakhiwe ngokufakwa kokushisa okuqinile, hhayi nje kuphela ukumelana okuhle komthelela, kanye nokukhishwa kwendawo kuncane kakhulu.

2.2.2. Amandla amahle okusebenza kanye nokumelana okuqinile kwe-short-circuit. Ngohlobo lwe-cylindrical oluhlukaniswe ngezigaba lokugoqa ucingo, ngemva kokuthululwa kwe-vacuum, i-resin ingacwiliswa phakathi kwezingqimba, ukujika kanye nezingxenye zokugoqa ngesikhathi esisodwa.

Ngemva kokulungiswa, i-resin, i-wire kanye ne-glass fiber kuhlanganiswa kahle ukuze kwakhiwe isakhiwo somzimba esiqinile. Izakhiwo zomshini ezinamandla aphezulu zesakhiwo zinquma ukuthi imikhiqizo yokukhipha amanxeba e-wire inokumelana okuhle kwe-short-circuit.

I-coefficient yokwandisa ukushisa kwezinto ezihlanganisiwe zokufaka umswakama ezakhiwe yi-resin yokwelapha kanye ne-fiber yengilazi ingu-(18 ~ 20)×10-6/K, kanti i-coefficient yokwandisa yethusi esetshenziswa ekugoqeni ingu-17×10-6/K, okucishe kube yizo zombili. Iqeda ukucindezeleka komshini phakathi komqhubi wokugoqa kanye nezinto zokufaka umswakama ezibangelwa ukwanda kokushisa kanye nokufinyela okubandayo ngesikhathi sokusebenza kwe-transformer. Kusukela empandeni kuya ekuqedeni isimo sokuqhekeka.

Njengoba umkhiqizo uphonswa nge-resin ngokucindezela okuphezulu nokuphansi kanti ingaphakathi lensimbi limbozwe nge-resin, unomswakama oqinile kanye nokumelana nokugqwala. Uma umswakama womoya ungama-100%, usengasebenza isikhathi eside.

Ngenxa yokuthi ukufakelwa okuhlanganisiwe okwakhiwa nge-resin emsulwa kanye ne-fiber yengilazi kunamandla kagesi aphezulu kakhulu, ubukhulu bokufakelwa kokufakelwa kokufakelwa komkhiqizo bungu-1.5 ~ 2 mm kuphela, okuthuthukisa kakhulu ukusebenza kahle kokushabalalisa ukushisa kwendawo egoqayo.

2.3. Uhlelo lokupholisa kanye nokuvikela

Ama-transformer omile apholiswa umoya wemvelo kanye nokupholisa ukujikeleza komoya okuphoqelelwe. Ukupholisa umoya wemvelo kwamukelwa ukuqinisekisa ukusebenza okuvamile kwe-transformer ngaphansi komthwalo olinganiselwe. Ama-transformer omile asetshenziswa esiteshini samandla se-baoji No.2 wonke apholiswa umoya ophoqelelwe yi-radial fan.

Ngemva kokupholisa ngokujikeleziswa komoya okuphoqelelwe, amandla e-transformer yohlobo olomile ene-800 kVA nangaphansi angandiswa ngo-40%, kanti amandla e-transformer yohlobo olomile ene-800 kVA nangaphezulu angandiswa ngo-50%, futhi angasebenza ngokuqhubekayo.

I-transformer yohlobo olomile ngokuvamile ivikela i-IP00, okungukuthi, ngaphandle kwegobolondo, ukusetshenziswa kwangaphakathi, isitshalo sesibili samandla seBaoji siwukusebenzisa le ndlela yokuvikela. Futhi ngokwezidingo zomsebenzisi, engeza igobolondo elivikelayo.

Indlu ye-IP20 ivimbela ukungena kwezinto eziqinile zangaphandle ezingaphezu kuka-12 mm futhi ihlinzeka ngesithiyo ezingxenyeni eziphilayo. Lapho kusetshenziswa ukuvikelwa kwe-IP23, ngaphandle komsebenzi wokuvikelwa kwe-IP20, inomsebenzi wokuvimbela ukuchitheka kwamanzi.

2.4. Uhlelo lokulawula izinga lokushisa

Ukusebenza okuphephile nokuthembekile kanye nempilo yesevisi ye-transformer yamandla kuncike kakhulu ekufakweni kokushisa okuphephile nokuthembekile kwe-transformer winding. Izinga lokushisa le-winding elidlula izinga lokushisa le-insulation lingenye yezizathu eziyinhloko zokuthi i-insulation ibhujiswe futhi i-transformer ayikwazi ukusebenza kahle.

I-SC series wire wound casting transformer isebenzisa uhlelo lokuvikela lokushisa oluzenzakalelayo lwe-XMTB. Isici sokulinganisa izinga lokushisa lokumelana nokushisa kweplatinum sifakwe ekuphendukeni kokuqala kwentambo yokugoqa ene-voltage ephansi ukuze ibone ngokuzenzakalelayo ukuphakama kwezinga lokushisa kwe-winding, ibonise izinga lokushisa le-winding ene-voltage ephansi enezigaba ezintathu, futhi inikeze isivikelo sokushisa kubo.

Ngokushintsha kwezinga lokushisa elizungezile kanye nomthwalo, lapho ukugoqa kufinyelela izinga lokushisa elilinganiselwe, isilawuli sokushisa sizothumela ngokuzenzakalelayo isignali yokulawula ukuqala kwefeni (110 ℃), ukuma kwefeni (90 ℃), i-alamu (120 ℃) ​​kanye nokukhubeka (145 ℃), ukuze umkhiqizo ube nokuvikelwa okuthembekile komthwalo oweqile okusebenza.

Ama-transformer e-wirewound casting ochungechunge lwe-SC3 asebenzisa ubuchwepheshe obunelungelo lobunikazi be-M&C bokuthola izinga lokushisa nokulawula ama-transformer windings, futhi akhiqize isilawuli sokushisa esingabona ngqo izinga lokushisa lama-windings, futhi siqaphele ukulawulwa kokupholisa umoya okuphoqelelwe (AF), i-alamu yokushisa ngokweqile kanye nohambo lokushisa ngokweqile kwe-transformer.

Ngemva kokulungisa okuvamile isilawuli sokushisa, i-transformer ifakwa kuqala ekusebenzeni kwenethiwekhi, bese isilawuli sokushisa sinikwa amandla okusebenza. Isilawuli sokushisa sisesimweni sokulawula okuzenzakalelayo, futhi ukutholwa nokuvikelwa kokushisa kwe-transformer kwenziwa. Lapho izinga lokushisa lokugoqa liphakeme kune-110 ℃, isilawuli sokushisa siqala ifeni ukuze kuphole ngokuphoqelelwa; Uma izinga lokushisa lokugoqa lehla ngaphansi kuka-90 ℃ ngaphansi kokupholisa komoya okuphoqelelwe, ifeni iyama.

Uma izinga lokushisa lokugoqa likhuphuka kakhulu, isilawuli sokushisa sizokhipha i-alamu yokushisa okweqile (155 ℃) kanye nesignali yokuhamba kokushisa okweqile (170 ℃). Uma isilawuli sokushisa sehluleka futhi singenakususwa okwesikhashana, susa isilawuli sokushisa, i-transformer ingaqhubeka nokusebenza, kudingeka nje ukuqapha nokuqinisekisa ukuthi i-transformer isesimweni sokusebenza esijwayelekile.

3. Ukuqhathaniswa phakathi kwe-transformer eyomile ne-transformer ecwiliswe ngamafutha

Izinzuzo ezibalulekile kanye nezindleko eziphansi zama-transformer acwiliswe ku-oyela kunzima ukuzithatha indawo ngamanye ama-transformer. Ezidingweni zangaphandle nezokuvikela umlilo zezindawo ezijwayelekile, njengamanje nasesikhathini esizayo isikhathi eside, kusazoba khona i-transformer ecwiliswe ku-oyela ikakhulukazi.

Kodwa ezindaweni ezinezidingo eziphezulu zokuvikela umlilo, kusetshenziswa ama-transformer ohlobo olomile noma olungenakushisa kanye nama-transformer oketshezi angashi. I-transformer eyomile inamandla okuthwala umthwalo omkhulu kune-transformer ecwiliswe uwoyela, ikakhulukazi ngoba ubuningi bamanje be-transformer eyomile buphansi, amandla okushisa makhulu, kanye nesikhathi esingaguquki sikhulu.

Uma kuqhathaniswa ne-transformer ecwiliswe uwoyela, isimo sokusebenza kwe-insulation ye-transformer eyomile siyathuthuka. I-transformer ecwiliswe uwoyela isebenzisa izindawo eziningi, ukufakwa kwangaphandle kuyanda.

Uhla lwamandla okunikezwa kwe-transformer eyomile luncane, ukusebenza kwangaphakathi kukhulu. Uma kuqhathaniswa nama-transformer acwiliswe uwoyela, ihlushwa yi-amplitude ye-voltage yombani ephansi, ikhanda lamagagasi elihamba kancane kanye nethuba elincane lokushaya kombani.

Ama-transformer omile avame ukuvikelwa yizibambi ze-metal oxide, ezingagcini nje ngokunciphisa i-overvoltage esemoyeni, kodwa futhi zinciphisa i-overvoltage yangaphakathi.