Iimpawu kunye nokusetyenziswa kweTransformer yohlobo olomileyo

Okwangoku, iitransformer zamandla omileyo zaseTshayina ziyinxalenye enkulu ye-SC eqinileyo enezigaba ezintathu, ezifana nezi: iitransformer ezijikelezayo ze-SCB9 series, iitransformer ezijikelezayo ze-SCB10 series ezinezigaba ezintathu ze-SCB9 series. Inqanaba layo le-voltage ngokubanzi liphakathi kwe-6-35kV, amandla aphezulu ukuya kuthi ga kwi-25MVA. Itransformer eyomileyo yahlulwe ngokubanzi ibe yitransformer eyomileyo efakwe ngaphakathi kunye neetransformer ezomileyo ze-resin iindidi ezimbini.

1. Isiguquli sohlobo olomileyo esifakwe emanzini

Ucingo lwe-transformer eyomileyo efakwe eTshayina lugqunywe ngocingo lweglasi, kwaye i-pad icinezelwe ngobushushu ngezinto zokukhusela ezihambelanayo. Isetyenziswa kakhulu kwizikhululo zamanzi kunye nezakhiwo eziphakamileyo ezinokumelana kakuhle nomlilo.

Ngenxa yomahluko phakathi kwepeyinti efunxayo, i-transformer insulation yahlulwe yaba yi-B, F, H, C, i-main insulation kunye ne-vertical insulation (i-main insulation phakathi kwe-winding kunye ne-winding kunye naphakathi kwe-winding kunye ne-core insulation.

Ukufakwa kobushushu ngokuthe nkqo kubhekisa ekufakweni kobushushu phakathi kwamanqaku ahlukeneyo kunye neendawo ezahlukeneyo ze-transformer winding ezinee-potentials ezahlukeneyo, ikakhulu kubandakanya ukusebenza kokufakwa kobushushu phakathi kokujika, iileya kunye namacandelo e-winding. Umoya usetyenziswa njengendawo yokukhusela ubushushu.

Olu hlobo lwe-transformer luchaphazeleka yimeko-bume kune-transformer eyomileyo yohlobo lwe-resin, inkangeleko kunye nobunzima nazo zikhulu, imveliso ekhaya nakwamanye amazwe idla ngokuncipha.

Kukho izitywina zokugqibela kuzo zombini iziphelo zokujika, ungoyiki ukuvela kwamaza, ukumelana nomlilo okunamandla, ukuthintela umlilo emlilweni ovulekileyo kwi-750 ℃, luhlobo olutsha lwe-transformer eyomileyo. 1.2 I-resin yohlobo olomileyo ye-transformer egameni le-resin yasekhaya yanamhlanje, iimveliso eziphambili ze-transformer zinokwahlulwa zibe ziindidi ezintathu ezilandelayo.

Uhlobo lokuqala, olubizwa ngokuba yi-wire wound casting transformer, i-voltage yalo ephezulu yi-wire wound breaking cylinder casting, i-voltage ephantsi yi-wire wound cylinder (okanye i-segmented cylinder) casting; uLi Qian, iShaanxi provincial Electric Power (group) Co., LTD. Qaphela ukuba akukho filler casting.

Uhlobo lwesibini, olubizwa ngokuba yi-foil-wound casting transformer, i-voltage yayo ephezulu i-segmented foil-wound casting type, i-voltage ephantsi yi-copper foil (okanye i-aluminium foil) winding type; i-Casting iphoswa nge-filler.

Uhlobo lwesithathu, uxinzelelo oluphezulu lohlobo lokuthulula isilinda esiqhekeza inxeba ngentambo, uhlobo lokujika oluphantsi lwefoyile yobhedu (okanye ifoyile ye-aluminium); Ukuphosa kwenziwa ngaphandle kwesihluzi.

Ezi ntlobo zintathu zemveliso zingasentla zineempawu zazo ekuvelisweni nasekusebenzeni kweemveliso, kwaye okwangoku zithatha isabelo esithile semarike kwimarike. Kweli nqaku, sigxila kwingxoxo yee-transformers ezithulula i-wire wound.

2. Isiguquli se-wire wound cast

2.1. Iimpawu zesakhiwo

Kwisikhululo sombane sesibini saseBaoji, kwiphondo laseShaanxi, iitransformer ezomileyo ezisetyenziswa kumzi-mveliso ziitransformer ezithulula ngocingo, ezinomgangatho wevolthi oyi-6 kV, umthamo osuka kwi-100 kVA ukuya kwi-1600 kVA, kunye nokufakelwa ngaphakathi.

Iiwindings ze-voltage ephezulu nephantsi zemveliso zenziwe ngocingo lobhedu, ziboshwe ngokupheleleyo, ziqiniswe ngefayibha yeglasi, zigqunywe nge-insulation encinci, i-resin engenasigcwalisi, zigalelwe phantsi kwe-vacuum state, kwaye zinyangwe ngokwe-curve ethile yokupholisa ubushushu.

Ukujikajika kwe-voltage ephezulu kusebenzisa isakhiwo se-cylinder esihlukaniswe ngokwezigaba, kwaye ukujikajika kwe-voltage ephantsi kusebenzisa uhlobo lwesilinda olunezingqimba ezininzi, uhlobo lwesilinda esihlukaniswe ngokwezigaba okanye uhlobo lwesilinda esihlukaniswe ngokwezigaba ngokwezinga le-voltage.

2.2 Iimpawu zobugcisa

2.2.1 Ukuchasana nempembelelo: Inxeba lokuthululwa kwe-transformer hv winding lisebenzisa isakhiwo esikhethekileyo se-cylindrical sectional, esi sakhiwo sisekelwe kwi-common section bobbin winding, uhlobo oluqhelekileyo lwesilinda olunezibonelelo zombini ze-bobbin winding impact resistance, kwaye isombulule umaleko we-bobbin winding we-voltage ephezulu phakathi kwe-contraindication, sisakhiwo esifanelekileyo se-winding, sidla ngokubizwa ngokuba sisakhiwo se-non-resonant winding.

Xa kuthelekiswa nesilinda eqhelekileyo ehlulwe ngokwezigaba, isilinda ekhethekileyo ehlulwe ngokwezigaba inokunciphisa ngakumbi i-voltage phakathi kweengqimba, iphucule ukusasazwa kwe-voltage, kwaye iphucule kakhulu amandla empembelelo okumelana ne-atmospheric overvoltage kunye ne-overvoltage esebenzayo.

Ukumelana nempembelelo akuhambelani nje kuphela nolwakhiwo lwe-winding, kodwa kuxhomekeke kumgangatho wokuphoswa kwe-winding kunye neempawu zombane zezinto zokukhusela.

Emva kokuba imveliso igqityiwe ukujijela, igalelwa i-resin ecocekileyo kwimeko yokungagcwalisi, kwaye akukho filler yongezwayo, ukuze ukusebenza kokuhamba kwe-resin kunganciphi.

Kwaye ngenxa yokuba ukujija kujikeleziswa ngocingo, i-resin inokuzalisa ngokupheleleyo ukujija, kungakhathaliseki ukuba ikwicala elijikelezayo okanye elijikelezayo lokujija, kwaye akukho bhamuza ngaphakathi.

Isishwankathelo: Eli phepha lazisa ngokuhlelwa kunye neempawu zetransformer eyomileyo, kwaye ligxile kwiimpawu zesakhiwo setransformer yokuthulula inxeba lentambo, iimpawu zobugcisa, inkqubo yokupholisa, inkqubo yolawulo lobushushu njalo njalo, lishwankathele ithemba lophuhliso lwetransformer eyomileyo. Amagama aphambili: itransformer eyomileyo; Ukuhlelwa kwetransformer ephosa inxeba lentambo.

I-resin kunye nefayibha yeglasi eyenziwe nge-insulation eqinileyo, ayigcini nje ngokumelana nempembelelo entle, kwaye ukukhutshwa kwayo kwindawo ethile kuncinci kakhulu.

2.2.2. Amandla alungileyo oomatshini kunye nokumelana okunamandla kwe-short-circuit. Kwi-cylindrical type ye-wire winding ehlukanisiweyo, emva kokuthululwa kwe-vacuum, i-resin inokuntywiliselwa phakathi kweengqimba, ii-turns kunye nee-circuit ze-winding ngaxeshanye.

Emva kokunyibilika, i-resin, ucingo kunye nefayibha yeglasi zidityaniswe ngokuqinileyo ukuze zenze isakhiwo somzimba esomeleleyo nesiqinileyo. Iipropati zoomatshini ezinamandla aphezulu zesakhiwo zimisela ukuba iimveliso zokubumba amanxeba entambo zinokumelana okuhle nokujikeleza okufutshane.

I-coefficient yokwandisa ubushushu yezinto ezihlanganisiweyo zokukhusela ezenziwe yi-resin ephilisayo kunye nefayibha yeglasi yi (18 ~ 20)×10-6/K, kwaye i-coefficient yokwandisa ubhedu olusetyenziswa ekujikeni yi-17×10-6/K, ephantse ibe kufutshane nezi zimbini. Isusa uxinzelelo loomatshini phakathi komqhubi wokujikanisa kunye nezinto zokukhusela ezibangelwa kukwanda kobushushu kunye nokuxinana okubandayo ngexesha lokusebenza kwe-transformer. Ukusuka kwingcambu ukuya ekususeni isenzeko sokuqhekeka.

Njengoko imveliso iphoswa nge-resin kuxinzelelo oluphezulu noluphantsi kwaye umbindi wentsimbi ugqunywe nge-resin, inomswakama onamandla kunye nokumelana nokugqwala. Xa umoya umswakama uyi-100%, isenokusebenza ixesha elide.

Ngenxa yokuba ubushushu obudibeneyo obuyilwe yi-resin ecocekileyo kunye nefayibha yeglasi bunamandla aphezulu ombane, ubukhulu bobushushu bobushushu bemveliso yi-1.5 ~ 2 mm kuphela, nto leyo ephucula kakhulu ukusebenza kakuhle kobushushu bomphezulu ojikelezayo.

2.3. Inkqubo yokupholisa kunye nokukhusela

Iitransformer ezomileyo zipholiswa ngokuphola komoya wendalo kunye nokuphola kokujikeleza komoya ngenkani. Uphola komoya wendalo kusetyenziswa ukuqinisekisa ukusebenza okuqhelekileyo kwetransformer phantsi komthwalo olinganisiweyo. Iitransformer ezomileyo ezisetyenziswa kwisikhululo samandla se-baoji No.2 zonke zipholiswa ngumoya onyanzelisiweyo yifeni ye-radial.

Emva kokupholisa ngokujikeleziswa komoya okunyanzelekileyo, umthamo we-transformer yohlobo olomileyo ene-800 kVA nangaphantsi unokwandiswa nge-40%, kwaye lowo we-transformer yohlobo olomileyo ene-800 kVA nangaphezulu unokwandiswa nge-50%, kwaye unokusebenza ngokuqhubekayo.

I-transformer yohlobo olomileyo ngokubanzi ikhusela i-IP00, oko kukuthi, ngaphandle kwegobolondo, ukusetyenziswa ngaphakathi, isityalo sesibini samandla saseBaoji sisetyenziselwa le ndlela yokukhusela. Kwakhona ngokweemfuno zomsebenzisi, yongeza igobolondo elikhuselayo.

Indlu ye-IP20 ithintela ukungena kwezinto ezingaphandle eziqinileyo ezingaphezulu kwe-12 mm kwaye ibonelela ngomqobo kwiindawo eziphilayo. Xa kusetyenziswa ukhuseleko lwe-IP23, ngaphandle komsebenzi wokhuseleko lwe-IP20, ikwanomsebenzi wokuthintela ukuchitheka kwamanzi.

2.4. Inkqubo yokulawula ubushushu

Ukusebenza okukhuselekileyo nokuthembekileyo kunye nobomi benkonzo ye-transformer yamandla buxhomekeke kakhulu ekugqumeni okukhuselekileyo nokuthembekileyo kwe-transformer winding. Ubushushu be-winding obudlula ubushushu be-insulation sesinye sezizathu eziphambili zokuba i-insulation yonakale kwaye i-transformer ingasebenzi ngokuqhelekileyo.

Isiguquli se-SC series wire wound casting transformer samkela inkqubo yokukhusela ubushushu ngokuzenzekelayo ye-XMTB. Into yokulinganisa ubushushu bokumelana nobushushu beplatinum ifakwe kwi-turn yokuqala ye-low-voltage winding wire ukuze ibone ngokuzenzekelayo ukunyuka kobushushu be-winding, ibonise ubushushu be-low-voltage winding yezigaba ezintathu, kwaye ibonelele ngokhuseleko lobushushu kubo.

Xa kutshintshile ubushushu obuphakathi kunye nomthwalo, xa ukujija kufikelela kubushushu obumiselweyo, isilawuli sobushushu siya kuthumela ngokuzenzekelayo isignali yokulawula ukuqala kwefeni (110 ℃), ukuma kwefeni (90 ℃), i-alamu (120 ℃) ​​kunye ne-trip (145 ℃), ukuze imveliso ibe nokhuseleko oluthembekileyo lomthwalo ogqithisileyo olusebenzayo.

Iitransformer ezisebenzisa i-wirewound casting ze-SC3 series zisebenzisa itekhnoloji ye-M&C enelungelo elilodwa lomenzi ukuze kufunyanwe ubushushu kunye nolawulo lwee-transformer windings, kwaye zivelise isilawuli sobushushu esinokubona ngokuthe ngqo ubushushu bee-windings, kwaye sifezekise ulawulo lokuphola komoya ophoqelelweyo (AF), i-alamu yobushushu obugqithisileyo kunye nohambo lobushushu obugqithisileyo lwe-transformer.

Emva kokulungiswa okuqhelekileyo kwesilawuli sobushushu, i-transformer ifakwa kuqala ekusebenzeni kwenethiwekhi, emva koko isilawuli sobushushu sinikwa amandla okusebenza. Isilawuli sobushushu sikwimeko yokulawula ngokuzenzekelayo, kwaye ukufunyanwa kobushushu kunye nokukhuselwa kwe-transformer kwenziwa. Xa ubushushu bokujija buphezulu kune-110 ℃, isilawuli sobushushu siqala ifeni ukuze kupholiswe ngenkani; Ukuba ubushushu bokujija buhla ngaphantsi kwe-90 ℃ phantsi kokupholisa komoya ngenkani, ifeni iyayeka.

Ukuba ubushushu bokujika buyanda ngakumbi, isilawuli sobushushu siya kukhupha i-alamu yobushushu obugqithisileyo (155 ℃) kunye nesignali yokuhamba kobushushu obugqithisileyo (170 ℃). Xa isilawuli sobushushu singaphumeleli kwaye singenakususwa okwethutyana, susa isilawuli sobushushu, i-transformer ingaqhubeka nokusebenza, kufuneka nje ijonge kwaye iqinisekise ukuba i-transformer ikwimeko yokusebenza eqhelekileyo.

3. Uthelekiso phakathi kwetransformer eyomileyo kunye netransformer entywilisiweyo kwioyile

Iingenelo ezibalulekileyo kunye neendleko eziphantsi zeetransformer ezintywilisiweyo kwioyile kunzima ukuzitshintsha zezinye iitransformer. Kwiimfuno zangaphandle nezokukhusela umlilo kwiindawo eziqhelekileyo, okwangoku nakwixesha elizayo ixesha elide, kusaza kubakho itransformer entywilisiweyo kwioyile.

Kodwa kwiindawo ezineemfuno eziphezulu zokukhusela umlilo, kusetyenziswa ii-transformer zohlobo olomileyo okanye ulwelo olungatshiyo kunye nolwelo olungatshiyo. I-transformer eyomileyo inomthamo ophezulu wokugqithisa kune-transformer efakwe kwi-oyile, ikakhulu ngenxa yokuba uxinano lwangoku lwe-transformer eyomileyo luphantsi, umthamo wobushushu mkhulu, kwaye ixesha lokujika lihlala lihleli likhulu.

Xa kuthelekiswa ne-transformer efakwe kwi-oyile, imeko yokusebenza kwe-insulation ye-transformer eyomileyo iphucukile. I-transformer efakwe kwi-oyile isebenzisa iindawo ezininzi, ukufakelwa ngaphandle kuyanda.

Uluhlu lwamandla ombane we-transformer eyomileyo luncinci, ukusebenza ngaphakathi kungaphezulu. Xa kuthelekiswa nee-transformers ezintywilisiweyo kwi-oyile, inengxaki yokuphakama kwe-voltage yombane ephantsi, intloko ye-wave ecothayo kunye nethuba elincinci lokubetha kombane.

Iitransformer ezomileyo zihlala zikhuselwe zizinto ezithintela i-metal oxide, ezingagcini nje ngokunciphisa i-atmospheric overvoltage, kodwa zikwanciphisa i-internal voltage.