Yiziphi izinzuzo kanye nokubi kwe-amorphous alloy cores esetshenziswa ekukhiqizeni ama-amorphous alloy core power transformers

Yiziphi izinzuzo kanye nokubi kwe-amorphous alloy cores esetshenziswa ekukhiqizeni ama-amorphous alloy core power transformers-SPL- power transformer, distribution transformer, oil immersed transformer, dry type transformer, cast coil transformer, ground mounted transformer, resin insulated transformer, oil cooled transformer, substation transformer, switchgear

amorphous i-alloy impahla uhlobo olusha lwe-alloy material eyaphuma ngawo-1970. Yamukela ubuchwepheshe bokupholisa obusezingeni eliphezulu emhlabeni wonke ukuze ipholise ngokuqondile insimbi ewuketshezi ngesilinganiso sokupholisa esingu-106°C/S ukuze kwakhe umugqa omncane oqinile onogqinsi luka-0.02-0.03mm. Yaqina ngaphambi kokuba icwebezele. I-alloy material ifana nengilazi ekuhlelweni kwe-athomu okungajwayelekile, ngaphandle kwesakhiwo sekristalu esibonakala ngezinsimbi, futhi izakhi zayo eziyisisekelo ziyinsimbi (Fe), i-nickel (Ni), i-cobalt (Co), i-silicon (Si), i-boron (B) , ikhabhoni (C) njll. Impahla yayo inezinzuzo ezilandelayo:

a) I i-amorphous I-alloy material ayinaso isakhiwo se-crystal futhi i-isotropic soft material magnetic; amandla kazibuthe mancane futhi inokushisa okuhle ukuzinza. Kusukela i i-amorphous ingxubevange yinto engaqondile, ukuthunga okuqondile kungasetshenziswa ukwenza inqubo yokukhiqiza insimbi ibe lula;

b) Azikho iziphambeko zesakhiwo ezivimbela ukuhamba kwezizinda kazibuthe, futhi ukulahlekelwa kwe-hysteresis kuncane kunalokhu kwamashidi ensimbi ye-silicon;

c) Ubukhulu bomucu buncane kakhulu, bungu-0.02-0.03mm kuphela, obucishe bube ngu-1/10 weshidi lensimbi ye-silicon.

d) Ukumelana kuphezulu, cishe okuphindwe kathathu kunamashidi ensimbi ye-silicon; ukulahlekelwa kwamanje kwe-eddy yezinto ze-amorphous alloy kuyancipha kakhulu, ngakho-ke ukulahlekelwa kweyunithi cishe ku-20% kuya ku-30% yamashidi ensimbi ye-silicone okusanhlamvu;

e) Izinga lokushisa le-anneal liphansi, cishe 1/2 weshidi lensimbi ye-silicon egxile kokusanhlamvu;

Ukusebenza okungenamthwalo kwe-amorphous alloy core kuphakeme. Ukulahlekelwa okungenamthwalo we-transformer eyenziwe nge-amorphous alloy core yi-70-80% ephansi kune-transformer evamile, futhi okwamanje akukho mthwalo kuncishiswa ngaphezu kuka-50%. Umphumela wokonga ugesi uvelele. Ngenhloso yokunciphisa ukulahleka komugqa wenethiwekhi, kokubili iGridi ye-State kanye ne-China Southern Power Grid ziye zakwandisa kakhulu isilinganiso sokuthengwa kwama-amorphous alloy transformers kusukela ngo-2012.

Ama-amorphous alloy transformers nawo anemibi elandelayo:

1) I-saturation density kazibuthe iphansi. Ukuminyana kukazibuthe kokugcwala komgogodla we-amorphous alloy kuvamise ukuthi kube ngu-1.56T, okucishe kube ngu-20% okuhluke ku-1.9T saturation density kazibuthe yeshidi lensimbi ye-silicon evamile. Ngakho-ke, ukuminyana kukazibuthe okuklanyelwe kwe-transformer nakho kudinga ukuncishiswa ngo-20%. Idizayini ye-flux density ye-crystal alloy oil transformer ivamise ukuba ngaphansi kuka-1.35T, futhi ukuminyana kwe-design flux ye-amorphous alloy dry transformer ngokuvamile kuba ngaphansi kuka-1.2T.

2) Ingqikithi ye-amorphous core strip iyazwela ekucindezelekeni. Ngemuva kokuthi umugqa oyinhloko ugcizelelwe, ukusebenza okungenamthwalo kulula ukuwohloka. Ngakho-ke, ukunakwa okukhethekile kufanele kukhokhwe esakhiweni. I-core kufanele imiswe kuhlaka lokusekela kanye nekhoyili, futhi yonke kuphela Ithwala amandla ayo adonsela phansi. Ngesikhathi esifanayo, ukunakwa okukhethekile kufanele kukhokhwe phakathi nenqubo yomhlangano. I-iron core ayikwazi ukuphoqelelwa, futhi ukungqongqoza kufanele kuncishiswe.

3) I-Magnetostriction icishe ibe ngu-10% enkulu kunaleyo yamashidi ensimbi ye-silicon evamile, ngakho-ke umsindo wayo unzima kakhulu ukuwulawula, okubuye kube esinye sezizathu eziyinhloko ezinciphisa ukukhuthazwa okusabalele kwama-amorphous alloy transformers. Umsindo we-transformer ubeka phambili izidingo eziphakeme, ezihlukaniswe zibe izindawo ezibucayi nezindawo ezingazweli, futhi izidingo ezithile zezinga lomsindo zibekwe phambili, okudinga ukuncishiswa okwengeziwe kwe-core design flux density.

4) I-amorphous alloy strip incane kakhulu, inogqinsi oluyi-0.03mm kuphela, ngakho-ke ayinakwenziwa ama-laminations njengamashidi ensimbi ye-silicon evamile, kodwa ingenziwa kuphela ama-core coiled. Ngakho-ke, abakhiqizi be-transformer abavamile besakhiwo esiyinhloko abakwazi ukucubungula ngokwabo, futhi ngokuvamile badinga i-Outsourcing jikelele, ehambisana nesigaba esingunxande we-strip core strip, ikhoyili ye-amorphous alloy transformer ngokuvamile nayo yenziwa isakhiwo esingunxande;

5) Izinga lendawo alanele. Njengamanje, ikakhulukazi umugqa we-amorphous alloy ongeniswe ku-Hitachi Metals, oqaphela kancane kancane ukwenziwa kwasendaweni. Ngaphakathi, i-Antai Technology ne-Qingdao Yunlu zine-amorphous alloy broadband (213mm, 170mm kanye ne-142mm). , futhi ukusebenza kwayo kuseyigebe elithile ekuzinzeni uma kuqhathaniswa namapheshana angenisiwe.

6) Umkhawulo wobude bomugqa omkhulu, ubude be-peripheral strip bomugqa wokuqala wengxubevange ye-amorphous bukhawulelwe usayizi wesithando somlilo, futhi ubude bawo bukhawulelwe kakhulu, kodwa manje sebuxazululiwe ngokuyisisekelo, kanye nengxubevange ye-amorphous. enobude obuphelele be-peripheral strip obungu-10m ingakhiqizwa Uhlaka oluyisisekelo lungasetshenziswa ukwenza u-3150kVA nangaphansi kwe-amorphous alloy dry change kanye no-10000kVA nangaphansi koshintsho lukawoyela we-amorphous alloy.

Ngokusekelwe kumphumela omuhle kakhulu wokonga amandla wama-amorphous alloy transformers, okuhambisana nokukhuthazwa ukongiwa kwamandla kazwelonke kanye nokunciphisa ukungcola kanye nochungechunge lwezinqubomgomo, isabelo semakethe sama-amorphous alloy transformers siyakhula. Ngaphezu kwalokho, uma kucatshangelwa umugqa wengxubevange ye-amorphous (okwamanje u-26.5 yuan / kg) cishe uphindwe kabili kunamashidi ensimbi ye-silicon evamile (30Q120 noma 30Q130), futhi igebe elinethusi lincane kakhulu. Uma kucatshangelwa ikhwalithi yemikhiqizo yegridi kanye nezidingo zokubhida, ama-amorphous alloy transformers ngokuvamile asebenzisa abaqhubi bethusi. Uma kuqhathaniswa namashidi ensimbi ye-silicon evamile, izikhala eziyinhloko zezindleko zama-amorphous alloy transformers zimi kanje:

I-1) Njengoba isakhiwo somgogodla wesilonda samukelwa, uhlobo lwe-transformer core kufanele lwamukele isakhiwo sekholomu emihlanu yesigaba ezintathu, esinganciphisa isisindo sohlaka olulodwa futhi sinciphise ubunzima bokuhlangana. Isigaba sesithathu sekholomu yezinhlanu kanye nesigaba sesithathu sekholomu isakhiwo sekholomu sinezinzuzo zabo kanye nokubi ngokwezindleko Njengamanje, abakhiqizi abaningi bamukela isakhiwo sekholomu emihlanu yesigaba sesithathu.

2) Njengoba isigaba esiphambanayo sekholomu ewumgogodla siwunxande, ukuze kugcinwe ukuhambisana kwebanga le-insulation, amakhoyili aphezulu naphansi we-voltage nawo enziwa abe isakhiwo esihambisanayo esingunxande.

3) Njengoba ukuminyana kazibuthe komklamo oyinhloko cishe kungaphansi ngo-25% kunaleyo yeziguquli zeshidi lensimbi ye-silicon evamile, futhi i-coefficient yayo eyinhloko ye-lamination icishe ibe ngu-0.87, ephansi kakhulu kune-0.97 yeziguquli zeshidi lensimbi ye-silicon evamile, i-design cross- indawo yengxenye idinga ukuba ibe nkulu kunaleyo yama-silicon steel sheet transformers avamile. Uma ingaphezu kwama-25%, isiyingi samakhoyili kagesi aphezulu naphansi nawo azokwenyuka ngokufanele. Ngesikhathi esifanayo, ukwanda kobude bamakhoyili kagesi aphezulu naphansi nakho kudinga ukucatshangelwa. Ukuqinisekisa ukuthi ukulahlekelwa komthwalo wekhoyili akuguquki, indawo ye-cross-sectional yocingo idinga ukuba Ngokuhambisanayo, inani lethusi elisetshenziswa kuma-amorphous alloy transformers cishe li-20% ngaphezu kwe-transformers evamile.