Isixhobo sokulawula i-voltage ye-transformer ihlukaniswe kwi-transformer "off-excitation" isixhobo sokulawula i-voltage kunye ne-transformer "on-load" yokutshintsha itephu.
Zombini zibhekisa kwimowudi yokulawula ivolthi yokutshintsha impompo ye-transformer, ke yintoni umahluko phakathi kwezi zimbini?
① "I-off-excitation" yokutshintsha itephu kukutshintsha itephu yecala eliphezulu le-voltage ye-transformer ukutshintsha umlinganiselo wokujika kwe-winding yolawulo lombane xa omabini amacala aphambili kunye nesibini e-transformer eqhawulwe kunikezelo lwamandla.
② "Umthwalo wokulayisha" umguquli wempompo: Ukusebenzisa i-tap changer elayishiwe, i-tap ye-transformer winding iyatshintshwa ukuze iguqule ukujika kwe-voltage ephezulu yolawulo lwe-voltage ngaphandle kokuqhawula umthwalo wangoku.
Umahluko phakathi kwezi zibini kukuba umtshintshi wempompo yokucima i-excitation akanalo ukukwazi ukutshintshela iigiya ngomthwalo, kuba olu hlobo lokutshintsha itephu lunenkqubo yokuqhawula ixesha elifutshane ngexesha lenkqubo yokutshintsha izixhobo. Ukuqhawula uxhulumaniso lomthwalo wangoku kuya kubangela i-arcing phakathi kwabafowunelwa kwaye konakalise umtshintshi wetephu. Umtshintshi wempompo ekulayishweni unokutshintsha okugqithisileyo ngexesha lenkqubo yokutshintsha igiya, ngoko ke akukho nkqubo yokuqhawula ixesha elifutshane. Xa utshintshela ukusuka kwelinye igiya ukuya kwelinye, akukho nkqubo ye-arcing xa umthwalo wangoku unqanyuliwe. Ngokuqhelekileyo isetyenziselwa iziguquli ezineemfuno ezingqongqo zombane ezifuna ukulungiswa rhoqo.
Ekubeni i-transformer "on-load" yokutshintsha itephu inokuqonda umsebenzi wokulawula i-voltage phantsi kwemeko yokusebenza ye-transformer, kutheni ukhetha umtshintshi we-tap "off-load"? Kakade ke, isizathu sokuqala lixabiso. Ngaphantsi kweemeko eziqhelekileyo, ixabiso le-transformer yokuguqula i-tap-off-load yi-2/3 yexabiso le-transformer yokuguqula i-tap-load; Kwangaxeshanye, umthamo wokutshintsha itephu yokulayisha incinci kakhulu kuba ayinayo indawo yokutshintsha impompo yomthwalo. Ngoko ke, ngokungabikho kwemimiselo okanye ezinye iimeko, i-transformer ye-tap-excitation ye-excitation iya kukhethwa.
Kutheni ukhetha i-transformer kumthwalo wokutshintsha impompo? Yintoni umsebenzi?
① Ukuphucula izinga lokufaneleka kombane.
Ukuhanjiswa kwamandla kwinethiwekhi yokusasazwa kwenkqubo yamandla kuvelisa ilahleko, kwaye ixabiso lelahleko lincinci kuphela kufutshane nombane olinganisiweyo. Ukuqhuba umgaqo wombane womthwalo, usoloko ugcina amandla ombane webhasi yesikhululo esisezantsi, kunye nokwenza izixhobo zombane zisebenze kwimeko yombane olinganisiweyo kuya kunciphisa ilahleko, eyona nto inoqoqosho kwaye isengqiqweni. Izinga lokufaneleka kombane sesinye sezibonakaliso ezibalulekileyo zomgangatho wobonelelo lwamandla. Ulawulo lwamandla ombane ngexesha elifanelekileyo linokuqinisekisa izinga lokufaneleka kwamandla ombane, ngaloo ndlela lihlangabezana neemfuno zobomi babantu kunye nemveliso yemizi-mveliso nezolimo.
② Ukuphucula amandla embuyekezo yamandla asebenzayo kunye nokunyusa izinga lokufakwa kwe-capacitor.
Njengesixhobo sembuyekezo yamandla asebenzayo, imveliso yamandla esebenzayo ye-capacitors yamandla ilingana nesikwere sombane osebenzayo. Xa i-voltage yokusebenza yenkqubo yamandla iyancipha, umphumo wembuyekezo uyancipha, kwaye xa umbane osebenzayo usanda, izixhobo zombane zigqithisekile, zibangele ukuba i-terminal voltage inyuke, ide igqithe umgangatho, ekulula ukonakalisa ukugquma kwesixhobo. kunye nonobangela
iingozi zezixhobo. Ukuze kuthintelwe amandla asebenzayo ukuba angaphinde abuyele kwinkqubo yamandla kunye nezixhobo zembuyekezo yamandla asebenzayo ukuba angasebenzi, okukhokelela kwinkcitho kunye nokwanda kwelahleko yezixhobo zamandla asebenzayo, iswitshi ephambili yempompo yesiguquli kufuneka ilungelelaniswe kwangexesha ukulungisa ibhasi. i-voltage kuluhlu olufanelekileyo, ukuze kungabikho mfuneko yokukhubaza imbuyekezo ye-capacitor.
Usebenza njani ummiselo wombane womthwalo?
Iindlela zokulawula amandla ombane ekulayishweni zibandakanya ukulawulwa kwamandla ombane kunye nolawulo lwamandla ombane.
Undoqo wolawulo lwevoltheji kumthwalo kukulungelelanisa i-voltage ngokuhlengahlengisa umlinganiselo wenguqu kwicala le-high-voltage ngelixa i-voltage kwicala le-low-voltage ihlala ingatshintshi. Sonke siyazi ukuba icala le-voltage ephezulu lidla ngokuba yivoltheji yenkqubo, kwaye i-voltage yenkqubo ihlala ihlala njalo. Xa inani lokujika kwi-high-voltage side winding linyuswa (oko kukuthi, umlinganiselo wokuguqulwa unyuswe), i-voltage kwicala eliphantsi-voltage iya kuncipha; ngokuchaseneyo, xa inani lokujika kwi-high-voltage side winding lincitshisiwe (oko kukuthi, umlinganiselo wokuguqulwa uyancipha), i-voltage kwicala eliphantsi-voltage iya kwanda. Yiyo i:
Ukwandisa ukujika = i-downshift = ukucutha i-voltage Ukunciphisa ukujika = upshift = ukunyuka kwamandla ombane
Ke, phantsi kwaziphi iimeko apho i-transformer ingenakwenza umguquli wempompo yokulayisha?
① Xa i-transformer igcwele kakhulu (ngaphandle kweemeko ezizodwa)
② Xa i-alarm yegesi ekhanyayo yesixhobo solawulo lwe-voltage ekulayishweni ivuliwe
③ Xa ukuxhathisa koxinzelelo lwe-oyile yesixhobo solawulo lombane ekulayishweni lungafanelekanga okanye akukho oli kuphawu lweoyile.
④ Xa inani lolawulo lombane lidlula inani elichaziweyo
⑤ Xa isixhobo solawulo lombane singaqhelekanga
Kutheni ukulayisha ngaphezulu kutshixa itshintshi yempompo elayishiweyo?
Oku kungenxa yokuba phantsi kweemeko eziqhelekileyo, ngexesha lenkqubo yokulawulwa kwe-voltage kwi-on-load voltage ye-transformer engundoqo, kukho umahluko we-voltage phakathi kwekhonkco eliphambili kunye nempompo ekujoliswe kuyo, eyenza umsinga ojikelezayo. Ke ngoko, ngexesha lolawulo lwenkqubo yolawulo lombane, i-resistor iqhagamshelwe ngokuhambelanayo ukuze idlule umbane ojikelezayo kunye nomthwalo wangoku. I-resistor ehambelanayo kufuneka imelane nomsinga omkhulu.
Xa i-transformer yamandla igxininisekile, umbane osebenzayo we-transformer oyintloko udlula i-current rated current of the tap change, enokuthi itshise umdibaniso oncedisayo we-tap change.
Ngoko ke, ukwenzela ukuthintela i-arcing phenomenon ye-tap changer, akuvumelekanga ukwenza ukulawulwa kwe-voltage kumthwalo xa i-transformer engundoqo igcwele kakhulu. Ukuba ukulawulwa kwe-voltage kunyanzeliswa, isixhobo sokulawula i-voltage ekulayishweni sinokutshisa, igesi yomthwalo inokuthi isebenze, kwaye i-transformer switch enkulu inokukhubeka.
Ixesha lokuposa: Sep-09-2024