ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
Ulimi
ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
I-transformer yamandla iyisizinda sokudlulisa nokusabalalisa amandla kagesi, kanye nengxenye eyinhloko yegridi yamandla. Ukusebenza kwayo okuthembekile akuhlobene kuphela nekhwalithi yamandla yabasebenzisi abaningi, kodwa futhi nokuphepha kwalo lonke uhlelo. Ukuthembeka kwe-transformer yamandla kunqunywa isimo sayo sezempilo, akuxhomeki kuphela ekwakhiweni nasekukhiqizeni, izinto zokwakha, kodwa futhi kuhlobene eduze nokulungiswa nokugcinwa. Inkinga yokuthuthukisa ukumelana kwe-short-circuit of transformers ezinhlelweni zamandla kuxoxwa ngayo.
Uhlolojikelele lweziguquli zamandla
I-electronic power transformer ibonakala ikakhulukazi ngokusebenzisa ubuchwepheshe be-electronic power. ibe isignali yefrikhwensi yamandla, okungukuthi, ukunciphisa imvamisa. Ngokwamukela uhlelo olufanele lokulawula ukulawula ukusebenza kwensiza yamandla kagesi, amandla kagesi efrikhwensi eyodwa, i-voltage kanye ne-waveform angaguqulwa abe amandla kagesi kwenye ifrikhwensi, i-voltage kanye ne-waveform. Njengoba ivolumu yesiguquli sokuhlukaniswa esimaphakathi sincike ekugcwalisweni kwe-flux kazibuthe yezinto eziyinhloko zensimbi kanye nokukhuphuka kwezinga lokushisa okuphezulu okuvumelekile kwe-iron core kanye nama-winging, kanye nokugcwala kwe-magnetic flux density ihambisana ngokuphambene nemvamisa yokusebenza, ikhulisa ukusebenza kwayo. imvamisa ingathuthukisa ukusetshenziswa kwe-iron core ukusebenza kahle, ngaleyo ndlela inciphise usayizi we-transformer futhi ikhulise ukusebenza kahle kwayo konke.
2. Izinyathelo zokuthuthukisa ukumelana ne-short-circuit yama-transformer amandla
Ukusebenza okuphephile, ukonga, okuthembekile kanye nokukhishwa kwama-transformer kuncike kukhwalithi yabo yokukhiqiza, indawo yokusebenza kanye nekhwalithi yokunakekelwa. Lesi sahluko sizama ukuphendula izinyathelo zokuvimbela ngokuphumelelayo ukwehluleka okungazelelwe kwe-transformer ngesikhathi sokusebenza nokugcinwa kwe-transformer.
Igridi yamandla ivamise ukufinyezwa ngenxa yokushaywa kombani, ukungasebenzi kahle noma ukwenqaba ukuvikelwa kokudluliselwa kwe-relay, njll. Umthelela oqinile we-short-circuit current ungase ulimaze i-transformer, ngakho-ke kufanele kwenziwe imizamo yokuthuthukisa amandla okumelana nesekethe esifushane. i-transformer kuzo zonke izici. Imiphumela yezibalo yezingozi zomthelela we-short-circuit ye-transformer ikhombisa ukuthi izizathu zokukhiqiza zibalelwa ku-80%, kanti izizathu zokusebenza kanye nokugcinwa kwazo zibalelwa ku-10%. Izinyathelo ezihlobene nokuklama nokukhiqiza zixoxiwe eSahlukweni 2, futhi lesi sahluko sigxile ezinyathelweni okufanele zithathwe ngesikhathi sokusebenza nokugcinwa. Enqubweni yokusebenza nokugcinwa, ngakolunye uhlangothi, amaphutha we-short-circuit kufanele ancishiswe, ngaleyo ndlela kuncishiswe inani lezikhathi lapho i-transformer ithintekile; ngakolunye uhlangothi, i-deformation of the transformer winding kufanele ihlolwe ngesikhathi ukuze kuvinjelwe izinkinga ngaphambi kokuba zenzeke.
(1) Linganisa umklamo futhi unake inqubo yokucindezela i-axial yokukhiqiza ikhoyili. Lapho uklama, umenzi akufanele acabange nje ukunciphisa ukulahlekelwa kanye nokuthuthukisa izinga lokufakelwa kwe-transformer, kodwa futhi acabangele ukuthuthukisa amandla omshini kanye nokumelana nephutha le-short-circuit ye-transformer. Ngokuphathelene nenqubo yokukhiqiza, njengoba ama-transformer amaningi asebenzisa amapuleti okucindezela okuvikelayo, futhi amakhoyili aphezulu naphansi ahlanganyela ipuleti yokucindezela, lesi sakhiwo sidinga izinga eliphezulu lobuchwepheshe bokukhiqiza, futhi ama-pads kufanele ahlanganiswe. Yomisa ikhoyili eyodwa ngokucindezela njalo, futhi ulinganise ubude bekhoyili ngemva kokucindezelwa; ngemva kokuba ikhoyili ngayinye yepuleti yokucindezela efanayo isicutshungulwe inqubo engenhla, ilungiswa ifinyelele ukuphakama okufanayo, futhi idivayisi ye-hydraulic isetshenziselwa ukufaka ukucindezela okucacisiwe kukhoyili ngesikhathi sokuhlanganiswa kokugcina. Finyelela ubude bomklamo kanye nezidingo zenqubo. Emhlanganweni jikelele, ngaphezu kokunaka ukucindezelwa kwekhoyili ye-voltage ephezulu, ukunakwa okukhethekile kufanele kukhokhwe ekulawuleni ukucindezelwa kwekhoyili ye-low-voltage.
(2) Yenza ukuhlolwa kwe-short-circuit ku-transformer ukuze uvimbele ukuthi kwenzeke ngaphambi kokuthi kwenzeke. Ukuthembeka kokusebenza kwama-transformer amakhulu kuncike kuqala ekwakhekeni kwawo kanye nezinga lenqubo yokukhiqiza, futhi okwesibili ekuhlolweni okuhlukahlukene kwemishini ngesikhathi sokusebenza ukuze kubambe izimo zokusebenza zemishini ngesikhathi. Ukuze uqonde ukuzinza kwemishini ye-transformer, kungenzeka ukuthuthukisa izixhumanisi zayo ezibuthakathaka ngokusebenzisa ukuhlolwa kwesifunda esifushane ukuze kuqinisekiswe ukuthi amandla esakhiwo se-transformer aklanyelwe ngokuqiniseka.
(3) Sebenzisa ukuvikelwa kokudluliselwa okuthembekile kanye nesistimu yokuvala kabusha okuzenzakalelayo. Ingozi ye-short-circuit ohlelweni iyingozi abantu abazama ukuyigwema kodwa abakwazi ukuyigwema ngokuphelele, ikakhulukazi ulayini we-10KV kungenzeka ukuthi udale ingozi yesifunda esifushane ngenxa yokungasebenzi kahle, ukungena kwezilwane ezincane, amandla angaphandle kanye nesibopho somsebenzisi. Ngakho-ke, ku-transformer esetshenzisiwe, kufanele kuqala ifakwe ugesi othembekile we-DC wohlelo lokuvikela, futhi uqinisekise ukufaneleka kwesenzo sokuvikela. Kuhlanganiswe nesimo samanje sokuthi amandla we-short-circuit yangaphandle ye-transformer ayisebenzi kahle, izici ezingezinhle kufanele zibonakale ngokuvala kabusha okuzenzakalelayo noma ukuphoqelelwa kokugunyazwa ngemuva kokukhubeka kwe-short-circuit system, kungenjalo ngezinye izikhathi kuzokwandisa umonakalo i-transformer futhi ilahlekelwe ngisho nethuba lokulungisa kabusha. . Okwamanje, eminye iminyango esebenzayo ikukhansele ukusetshenziswa kokuvala kabusha kolayini abangaphezulu kwendawo eseduze (njengaphakathi kuka-2km) noma izintambo zekhebula ngokwamathuba okuthi ingabe iphutha le-short-circuit lingaqedwa ngokuzenzakalelayo ngokuphazima kweso, noma kunwetshwe ngokufanelekile isikhawu phakathi kokuvalwa ukunciphisa izinkinga ezibangelwa ukwehluleka ukuphinda kuvalwe. Ingozi yokukhubeka kwe-short-circuit kufanele yenziwe ngangokunokwenzeka.
(4) Yenza ngenkuthalo ukuhlolwa kwe-deformation kanye nokuxilongwa kwe-transformer windings. Imvamisa, ngemuva kokuthi i-transformer ithintekile yiphutha le-short-circuit current, ukujikajika kuzokhubazeka kancane, futhi noma kungalimali ngokushesha, kungashiya inkathazo enkulu efihliwe. Okokuqala, ibanga le-insulation lizoshintsha futhi ukufakwa okuqinile kuzolimala, okuholela ekukhishweni okuyingxenye. Uma uhlangabezana ne-overvoltage yombani, kungenzeka ukuthi kube nokuhlukana phakathi kokuphenduka kanye ne-inter-cake, okuholela ezingozini zokushisa okungazelelwe. Ngisho nangaphansi kwe-voltage evamile yokusebenza, izingozi zokuhlukaniswa kwe-insulation zingabangelwa umphumela wesikhathi eside wokukhishwa kwengxenye.
Ngakho-ke, ukwenza ngenkuthalo ukuxilongwa kwe-transformer winding deformation, ukutholakala ngesikhathi kwama-transformer anephutha, nokuqinisekiswa kwe-hood okuhleliwe nokugcinwa akugcini nje ukusindisa inqwaba yabasebenzi kanye nezinsiza ezibonakalayo, kodwa futhi kudlala indima ebaluleke kakhulu ekuvimbeleni izingozi ze-transformer.
Ukusatshalaliswa kweziro kanye nesigxobo somsebenzi wokudlulisa ongu-H(jw) (okungukuthi, isici sokuphendula imvamisa) kuhlobene eduze nezingxenye nezindlela zokuxhuma kunethiwekhi yezimbobo ezimbili. Inani elikhulu lemiphumela yocwaningo lokuhlola libonisa ukuthi amajika e-transformer avamise ukuba namaphoyinti e-resonance amaningi ebangeni lefrikhwensi engu-10KZ~1MHZ. Uma imvamisa ingaphansi kuka-10KHZ, i-inductance of the winding idlala indima enkulu, iphoyinti le-resonance ngokuvamile lincane, futhi alizweli kancane ekushintsheni kwe-capacitance esabalalisiwe; lapho i-frequency idlula i-1 MHZ, i-inductance of the winding idlula i-capacitance esabalalisiwe, futhi iphuzu le-resonance nalo lizoncishiswa ngokufanele, lingazweli kancane ekushintsheni kwe-inductance, futhi njengoba imvamisa ikhula, amandla alahlekile we-loop yokuhlola. (umthofu) uzoba nomthelela omkhulu emiphumeleni yokuhlolwa.
Ngenxa yokuthi i-transformer winding deformation tester iyabiza futhi idinga izinga eliphezulu labasebenzi, akulula ukuthi isetshenziswe kabanzi ekukhiqizeni nasekusebenzeni. Ngakho-ke, emsebenzini wangempela, indlela yokwahlulela ukuthi i-winging ikhubazekile ngokuvumelana noshintsho lwe-transformer winding capacitance ingasetshenziswa njengesengezo esiwusizo endleleni yokuphendula imvamisa. Ikakhulukazi lapho indlela yokuphendula imvamisa ingenazo izimo, isimo sokusebenza se-transformer winding singabanjwa ngesikhathi ngokuqhathanisa i-capacitance elinganiselwe eqoqwe ngokuvundlile nangokuqondile, ukuze kuncishiswe amathuba ezingozi nokuqinisekisa ukusebenza okuphephile nokuzinzile kwe igridi yamandla.
(5) Ukuqinisa ukuhlolwa ekwakhiweni kwesiza nasekusebenzeni nasekulungisweni, futhi kusetshenziswe uhlelo oluthembekile lokuvikela isifunda esifushane. Lapho ufaka i-transformer esizeni, ukwakhiwa kufanele kwenziwe ngokuhambisana ngokuqinile nemiyalelo kanye nokucaciswa komkhiqizi, ikhwalithi kufanele ilawulwe ngokuqinile, futhi izinyathelo ezihambisanayo kufanele zithathwe ukuze kuqedwe izingozi ezifihliwe ezitholiwe. Izisebenzi ezisebenza nokunakekela kufanele ziqinise ukuhlolwa nokunakekelwa kanye nokuphathwa kwewaranti ye-transformer ukuze kuqinisekiswe ukuthi i-transformer isesimweni esihle sokusebenza, futhi bathathe izinyathelo ezihambisanayo zokunciphisa amathuba okuba namaphutha e-short-circuit endaweni yokukhipha kanye nezindawo eziseduze. Ukuze ugweme iphutha le-short-circuit yesistimu ngangokunokwenzeka, kuma-transformer aseqalile ukusebenza, okokuqala ahlomise uhlelo lwe-DC oluthembekile lwesistimu yokuvikela ukuqinisekisa ukufaneleka kwesenzo sokuvikela; Ubuchwepheshe bokuhlola indlela yokuphendula imvamisa bukala isimo se-transformer ngemva kokuthintwa ukuhamba kwesifunda, futhi buhlola ngenhloso ihood ngokuya ngemiphumela yokuhlolwa, engagwema ngempumelelo ukwenzeka kwezingozi ezinkulu.
Ukuthi i-transformer ingakwazi ukumelana nemisinga ehlukahlukene ye-short-circuit ikakhulukazi incike ekwakhiweni kwesakhiwo kanye nenqubo yokukhiqiza ye-transformer, futhi inobudlelwane obukhulu nokuphathwa kokusebenza, izimo zokusebenza kanye nezinga lobuchwepheshe bokwakha. Ingozi ye-short-circuit ye-transformer iyingozi kakhulu ekusebenzeni kwesistimu yegridi yamandla. Ukuze ugweme izingozi, izinyathelo zokulawula ezisebenzayo kufanele zithathwe ezicini ezihlukahlukene ukuze kuqinisekiswe ukusebenza okuphephile nokuzinzile kwama-transformer kanye nezinhlelo zamagridi kagesi.
