Kwihlabathi le-transformer, amagama athi "loop feed" kunye "nokutya kweradial" adla ngokunxulunyaniswa neHV bushing layout for compartmentalized padmount transformers. La magama, nangona kunjalo, awazange aqale kwi-transformers. Zivela kwingcamango ebanzi yokuhanjiswa kwamandla kwiinkqubo zombane (okanye iisekethe). I-transformer ibizwa ngokuba yi-loop feed transformer ngenxa yokuba ubumbeko bayo bulungiselelwa kwindlela yokusasaza loop. Kukwasebenza okufanayo nakwiziguquli esizihlela njengezokutya kweradial-indlela yokuma kwe-bushing ifanelekile kwiinkqubo zeradial.
Kwiintlobo ezimbini zeenguqu, i-loop feed version yeyona nto iguquguqukayo. Iyunithi yokutya ye-loop inokwamkela zombini ulungelelwaniso lwe-radial kunye ne-loop inkqubo, ngelixa ii-radial feed transformers phantse zisoloko zivela kwiinkqubo ze-radial.
IiNkqubo zoSasazo lweRadial kunye neLoop
Zombini iinkqubo ze-radial kunye ne-loop zijolise ekufezekiseni into efanayo: ukuthumela amandla ombane ophakathi ukusuka kumthombo oqhelekileyo (ngokuqhelekileyo isitishi) ukuya kwelinye okanye ngaphezulu kwe-step-down transformer ekhonza umthwalo.
Ukutya kweradial yeyona nto ilula kwezi zimbini. Khawucinge ngesangqa esinemigca emininzi (okanye i-radians) esuka kwindawo enye yeziko, njengoko kuboniswe kuMzobo 1. Eli nqaku eliphakathi limele umthombo wamandla, kwaye izikwere ekupheleni komgca ngamnye zimele i-step-down transformers. Kulo cwangciso, i-transformer nganye isondliwa ukusuka kwindawo efanayo kwinkqubo, kwaye ukuba umthombo wamandla uphazamisekile ukugcinwa, okanye ukuba kwenzeka iphutha, yonke inkqubo ihla de kube umba uxazululwe.
Umfanekiso woku-1: Lo mzobo ungentla ubonisa ii-transformers ezidityanisiweyo kwinkqubo yokusabalalisa i-radial. Indawo esembindini imele umthombo wamandla ombane. Isikwere ngasinye simele isiguquli esizimeleyo esondliwa kumbane omnye ofanayo.
Umfanekiso wesi-2: Kwinkqubo yokusabalalisa ukutya kwe-loop, i-transformers inokondliwa yimithombo emininzi. Ukuba ukusilela kwentambo ye-feeder phezulu kuMthombo A kwenzeka, isixokelelwano sinokuthi sinikwe amandla ngeentambo zomxhasi eziqhagamshelwe kuMthombo B ngaphandle kwelahleko ingako yenkonzo.
Kwinkqubo ye-loop, amandla anokunikezelwa ukusuka kwimithombo emibini okanye ngaphezulu. Esikhundleni sokutyisa iziguquli ukusuka kwindawo enye ephakathi njengoko kuMfanekiso 1, inkqubo ye-loop eboniswe kuMzobo 2 inikezela ngeendawo ezimbini ezahlukileyo apho amandla anokunikezelwa khona. Ukuba umthombo wamandla omnye awusebenzi kwi-intanethi, omnye unokuqhubeka nokubonelela ngombane kwinkqubo. Oku kungafunekiyo kubonelela ngokuqhubekeka kwenkonzo kwaye kwenza inkqubo yelophu ibe lolona khetho lukhethwayo kubasebenzisi abaninzi bokugqibela, njengezibhedlele, iikhampasi zekholeji, izikhululo zeenqwelo moya, kunye nezakhiwo ezinkulu zemizi-mveliso. Umzobo we-3 unika umbono osondeleyo we-transformer ezimbini eziboniswe kwi-loop system ukusuka kuMfanekiso 2.
Umfanekiso wesi-3: Lo mzobo ungasentla ubonisa i-loop feed emiselweyo ye-loop transformers edityaniswe kunye kwinkqubo ye-loop enokhetho lokutyiswa kwenye yezimbini zombane.
Umahluko phakathi kweenkqubo zeradial kunye nelophu unokushwankathelwa ngolu hlobo lulandelayo:
Ukuba i-transformer ifumana amandla ukusuka kwindawo enye kuphela kwisekethe, ngoko inkqubo i-radial.
Ukuba i-transformer iyakwazi ukufumana amandla ukusuka kumanqaku amabini okanye ngaphezulu kwisekethe, ke inkqubo i-loop.
Uvavanyo olusondeleyo lwee-transformers kwisekethe alunako ukubonisa ngokucacileyo ukuba inkqubo i-radial okanye i-loop; njengoko besibonisile ekuqaleni, zombini i-loop feed kunye ne-radial feed transformers inokumiselwa ukuba isebenze kuyo nayiphi na imeko yesekethe (nangona kwakhona, kunqabile ukubona i-radial feed transformer kwi-loop system). Iplani yombane kunye nomgca omnye yeyona ndlela ilungileyo yokumisela uyilo lwenkqubo kunye noqwalaselo. Oko kuthethwa, ngokujongwa ngokusondeleyo kwi-primary bushing configuration ye-radial kunye ne-loop feed transformers, kaninzi kunokwenzeka ukwenza isigqibo esinolwazi malunga nenkqubo.
Ulungelelwaniso lweRadial kunye neLoop Feed Bushing
Kwiziguquli ze-padmount, umahluko ophambili phakathi kwe-radial kunye ne-loop feed ilele kwi-primary/HV bushing configuration (icala lasekhohlo lekhabhinethi ye-transformer). Kwiprayimari yokutya kwe-radial, kukho i-bushing enye kwi-conductor yesigaba ngasinye sesithathu esingenayo, njengoko kubonisiwe kuMfanekiso 4. Olu yilo lufumaneka rhoqo apho kufuneka i-transformer enye ukunika amandla isayithi okanye indawo yonke. Njengoko siza kubona kamva, ii-radial feed transformers zihlala zisetyenziselwa iyunithi yokugqibela kuthotho lwee-transformers ezidityaniswe kunye ne-loop feed primaries (jonga uMfanekiso 6).
Umfanekiso 4:Ulungelelwaniso lokutya kweradial kuyilelwe ukondla omnye wokuqala ongenayo.
I-Loop feed primaries ine-bushings ezintandathu endaweni yesithathu. Olona lungiselelo luxhaphakileyo lwaziwa ngokuba yi-V Loop eneseti ezimbini zamatyholo amathathu agxadayo (bona umfanekiso 5)—izihlahla ezithathu ngasekhohlo (H1A, H2A, H3A) nezithathu ngasekunene (H1B, H2B, H3B), njengoko kuchaziwe. kwi-IEEE Std C57.12.34.
Umfanekiso wesi-5: Uqwalaselo lwe-loop feed lunika ithuba lokuba neefidi ezimbini eziphambili.
Esona sicelo siqhelekileyo seprayimari ye-six-bushing kukudibanisa ii-loop feed transformers ezininzi kunye. Kulo cwangciso, isondlo esiluncedo esingenayo singeniswa kwi-transformer yokuqala kumgca. Isethi yesibini yeentambo zihamba ukusuka kwi-B-side bushings yeyunithi yokuqala ukuya kwi-A-side bushings ye-transformer elandelayo kwi-series. Le ndlela ye-daisy-chaining ezimbini okanye ngaphezulu kwee-transformers kumqolo ikwabizwa ngokuba yi "loop" ye-transformers (okanye "i-looping transformers kunye"). Kubalulekile ukwenza umahluko phakathi kwe "loop" (okanye i-daisy chain) ye-transformers kunye ne-loop feed njengoko ihambelana ne-transformer bushings kunye neenkqubo zokuhambisa umbane. Umzobo we-6 uchaza umzekelo ogqibeleleyo we-loop ye-transformers efakwe kwi-radial system. Ukuba amandla alahlekile kumthombo, zontathu ii-transformer ziya kuba zingasebenzi kwi-intanethi de amandla abuyiselwe. Qaphela, uviwo olusondeleyo lweyunithi yokutya kwe-radial ngasekunene kuya kubonisa inkqubo ye-radial, kodwa oku bekungayi kucaca ukuba sijonge kuphela ezinye iiyunithi ezimbini.
Umfanekiso wesi-6: Eli qela labaguquli lityiswa kumthombo omnye oqala kwi-transformer yokuqala kuthotho. Ukutya okuphambili kugqithiswa kwi-transformer nganye kuluhlu ukuya kwiyunithi yokugqibela apho iphelile.
Iifuse ze-bayonet zecala zangaphakathi zinokongezwa kwi-transformer nganye, njengoko kuboniswe kuMfanekiso 7. I-fusing ephambili yongeza uluhlu olongezelelweyo lokukhusela inkqubo yombane-ingakumbi xa ii-transformers ezininzi ezidibeneyo zixutywe ngabanye.
Umfanekiso 7:I-transformer nganye ifakwe ngokukhuselwa kwayo kwangaphakathi kwangaphakathi.
Ukuba icala lesibini lesiphoso lenzeka kwiyunithi enye (Umfanekiso 8), ukudibanisa okuphambili kuya kuphazamisa ukuhamba kwe-overcurrent kwi-transformer ephosakeleyo ngaphambi kokuba ikwazi ukufikelela kuzo zonke iiyunithi, kwaye umsinga oqhelekileyo uya kuqhubeka udlula kwiyunithi ephosakeleyo ukuya. ii-transformer eziseleyo kwisekethe. Oku kunciphisa ixesha lokuphumla kwaye kuthumele ukusilela kwiyunithi enye xa iiyunithi ezininzi zidityaniswe kunye kwisekethe yesebe enye. Olu cwangciso kunye nokhuseleko lwangaphakathi lwangaphakathi lunokusetyenziswa kwiinkqubo ze-radial okanye i-loop-kuyo nayiphi na imeko, i-fuse yokugxotha iya kuhlukanisa iyunithi ephosakeleyo kunye nomthwalo osebenzayo.
Umzobo 8: Xa kwenzeka ingxaki yecala lomthwalo kwiyunithi enye kuluhlu lweziguquli, ukuxutywa kwecala eliphambili kuya kuhlukanisa iyunithi ephosakeleyo ukusuka kwezinye iinguqu kwi-loop-ukuthintela umonakalo ongaphezulu kunye nokuvumela ukusebenza okungaphulwanga kuyo yonke inkqubo.
Olunye usetyenziso lwe-loop feed bushing bushing uqwalaselo kukuqhagamshela imithombo emibini eyahlukeneyo yokutya (Ukutya i-A kunye ne-B) kwiyunithi enye. Oku kufana nemeko yangaphambili kwi-Figure 2 kunye ne-Figure 3, kodwa kunye neyunithi enye. Kwesi sicelo, enye okanye ngaphezulu i-oyile-ifakwe kwi-oil-immersed selectctor-switch switch ifakwe kwi-transformer, evumela ukuba iyunithi itshintshe phakathi kokutya okubini njengoko kufuneka. Ulungelelwaniso oluthile luya kuvumela ukutshintsha phakathi kwesondlo somthombo ngamnye ngaphandle kokulahlekelwa kwamandla okomzuzwana kumthwalo ohanjiswayo-inzuzo ebalulekileyo kubasebenzisi bokugqibela abaxabisa ukuqhubeka kwenkonzo yombane.
Umzobo 9: Lo mzobo ungentla ubonisa i-loop feed transformer enye kwinkqubo ye-loop enokhetho lokutyiswa kwenye yezimbini zombane.
Nanku omnye umzekelo we-loop feed transformer efakwe kwi-radial system. Kule meko, ikhabhinethi ephambili ineseti enye kuphela yee-conductor ezihlala kwi-A-side bushings, kwaye iseti yesibini ye-B-side bushings inqanyulwe mhlawumbi ngee-insulated caps okanye i-elbow arresters. Eli lungiselelo lilungele nasiphi na isicelo sokutya kwe-radial apho kufuneka i-transformer enye kuphela kufakelo. Ukufakela izixhobo zokukhusela ezikhuselweyo kwi-B-side bushings kwakhona ulungelelwaniso oluqhelekileyo lwe-transformer yokugqibela kwikhonkco okanye uchungechunge lweeyunithi ze-loop feed (ngokwesiqhelo, ukukhuselwa kwe-surge kufakwe kwiyunithi yokugqibela).
Umfanekiso we-10: Nanku umzekelo wesiseko se-loop feed enamatyholo amathandathu apho amatyholo amathathu esibini kwicala lika-B apheliswa ngokubanjwa kwengqiniba ngaphambili. Olu lungelelwaniso lusebenza kwi-transformer enye ngokwayo, kwaye ikwasetyenziselwa i-transformer yokugqibela kuluhlu lweeyunithi ezidibeneyo.
Kuyenzeka kwakhona ukuphinda-phinda olu lungelelwaniso nge-three-bushing radial feed primary usebenzisa i-rotatable feed-through (okanye i-feedthru). Ifeed-through installer ikunika ithuba lokufakela ukupheliswa kwentambo enye kunye nesibambisi sengqiniba esinye esifileyo kwisigaba ngasinye. Olu lungelelwaniso kunye nokufakwa kwe-feed-ngokufaka kwakhona kwenza ukumisa enye iseti yeentambo zeenkqubo zenkqubo ye-loop yezicelo zenzeke, okanye udibaniso oluthathu olongezelelweyo lungasetyenziselwa ukondla amandla kwenye i-transformer kuthotho (okanye i-loop) yeeyunithi. I-feed-through configuration kunye ne-radial transformers ayivumeli ukhetho lokukhetha phakathi kwesethi eyahlukileyo ye-A-side kunye ne-B-side bushings kunye nokutshintshwa kwangaphakathi kwi-transformer, okwenza kube yinto engathandekiyo kwiinkqubo ze-loop. Iyunithi enjalo ingasetyenziselwa isisombululo sexeshana (okanye sokurenta) xa i-loop feed transformer ingafumaneki ngokukhawuleza, kodwa ayisosisombululo esisisigxina.
Umfanekiso we-11: Ukutya okujikeleziswayo okufakelweyo kungasetyenziselwa ukongeza izibambisi okanye enye iseti yeentambo eziphumayo kulungiselelo lwe-radial feed bushing.
Njengoko kukhankanyiwe ekuqaleni, ii-loop feed transformers zisetyenziswa ngokubanzi kwiinkqubo zeradial kuba zinokuxhotyiselwa ukusebenza zodwa njengoko kubonisiwe ngasentla kuMzobo we-10, kodwa phantse zihlala zilukhetho olulodwa kwiinkqubo ze-loop ngenxa ye-bushing yazo emithandathu. uyilo. Ngokufakela ukutshintshwa kwe-oyile-eyenziwe nge-oyile, ukutya okuninzi kwemithombo kunokulawulwa kwikhabhinethi yokuqala yeyunithi.
Umgaqo kunye nokutshintsha okukhethiweyo kubandakanya ukwaphula ukuhamba kwangoku kwiikhoyili ze-transformer njengokutshintsha okulula / ukuvala kunye nekhono elongezelelweyo lokuqondisa kwakhona ukuhamba kwangoku phakathi kwe-A-side kunye ne-B-side bushings. Olona hlengahlengiso lulula lomkhethi ukuqonda lukhetho lokutshintshela indawo ezimbini. Njengoko i-Figure 12 ibonisa, enye i-on / off switch ilawula i-transformer ngokwayo, kunye nokutshintsha ezimbini ezongezelelweyo zilawula i-A-side kunye ne-B-side feeds ngabanye. Olu lungelelwaniso lugqibelele ukuseta isixokelelwano se-loop (njengakuMfanekiso 9 ngasentla) efuna ukukhetha phakathi kwemithombo emibini eyahlukeneyo nangaliphi na ixesha. Ikwasebenza kakuhle kwiinkqubo zeradial ezineeyunithi ezininzi zedaisy ezidityaniswe kunye.
Umfanekiso 12:Umzekelo we-transformer enezitshintshi ezintathu zomntu ngamnye-ezimbini kwicala eliphambili. Olu hlobo lokutshintshela umkhethi lunokuphinda luqeshwe ngokutshintshwa kweendawo ezine, nangona kunjalo, ukhetho lweendawo ezine alukhonto ininzi, njengoko ingavumeli ukucima / ukucima ukutshintshwa kwe-transformer ngokwayo kungakhathaliseki ukuba i-A-side kunye ne-A-side. Ukutya kwicala B.
Umzobo we-13 ubonisa ii-transformers ezintathu, nganye inezitshintshi ezintathu zeendawo ezimbini. Iyunithi yokuqala ekhohlo inazo zontathu iiswitshi kwindawo evaliweyo (evuliwe). I-transformer ephakathi ine-A-side kunye ne-B-side switches kwindawo evaliweyo, ngelixa i-switch elawula i-coil ye-transformer ikwindawo evulekile (off). Kule meko, amandla anikezelwa kumthwalo owenziwe ngumguquleli wokuqala kunye ne-transformer yokugqibela kwiqela, kodwa kungekhona kwiyunithi ephakathi. I-A-side kunye ne-B-side-side on / off switches ivumela ukuhamba kwangoku ukuba kudluliselwe kwiyunithi elandelayo kwi-lineup xa i-on / off switch ye-coil ye-transformer ivuliwe.
Umfanekiso we-13: Ngokusebenzisa iiswitshi ezininzi zokukhetha kwi-transformer nganye, iyunithi esembindini inokuba yodwa ngaphandle kokulahlekelwa kwamandla kwiiyunithi ezikufutshane.
Kukho olunye ulungelelwaniso lokutshintsha olunokwenzeka, olufana nokutshintsha kweendawo ezine-ethi ngendlela ethile idibanisa izinto ezintathu zokutshintsha indawo ezimbini kwisixhobo esinye (kunye nokwahlukana okumbalwa). Izitshixo ezine zeendawo zikwabizwa ngokuba "ziiswitshi ze-loop feed" kuba zisetyenziswa kuphela kunye ne-loop feed transformers. Iiswitshi ze-loop feed zingasetyenziswa kwiinkqubo zeradial okanye loop. Kwinkqubo ye-radial, zisetyenziselwa ukuhlukanisa i-transformer kwabanye kwiqela njengoko kuMzobo 13. Kwinkqubo ye-loop, utshintsho olunjalo luhlala lusetyenziselwa ukulawula amandla ukusuka komnye wemithombo emibini engenayo (njengoko kuMfanekiso 9).
Ukujongwa nzulu kokutshintsha kwe-loop feed kungaphaya kwemida yeli nqaku, kwaye inkcazo emfutshane yazo apha isetyenziselwa ukubonisa inxalenye ebalulekileyo yangaphakathi yokutshintsha isikhethi soguqulo esidlala kwi-loop feed transformers efakwe kwiinkqubo ze-radial kunye ne-loop. Kwiimeko ezininzi apho i-transformer yokutshintsha ifuneka kwinkqubo yokutya ye-loop, uhlobo lokutshintsha okuxoxwe ngalo ngasentla luyakufuneka. Ukutshintsha okuthathu kweendawo ezimbini kunika eyona nto ininzi, kwaye ngenxa yesi sizathu, ziyisisombululo esifanelekileyo kwi-transformer yokutshintshwa efakwe kwi-loop system.
Isishwankathelo
Njengomgaqo jikelele wesithupha, i-radial feed pad-mounted transformer ngokuqhelekileyo ibonisa inkqubo ye-radial. Nge-loop feed pad-mounted transformer, kunokuba nzima ukwenza ukuzimisela malunga nokucwangciswa kwesekethe. Ubukho bokutshintsha kwangaphakathi kwe-oyile yokuntywiliselwa komkhethi kuya kuhlala kubonisa inkqubo ye-loop, kodwa ayisoloko. Njengoko kukhankanyiwe ekuqaleni, iisistim ze-loop ziqhele ukusetyenziswa apho kufuneka ukuqhubeka kwenkonzo, njengezibhedlele, izikhululo zeenqwelo moya, kunye neekhampasi zekholeji. Ufakelo olubalulekileyo olufana nolu, ulungelelwaniso oluthile luya kusoloko lufuneka, kodwa izicelo ezininzi zorhwebo kunye nezoshishino ziya kuvumela ukuguquguquka okuthile kuqwalaselo lwe-pad-mounted transformer ebonelelwayo-ingakumbi ukuba inkqubo i-radial.
Ukuba umtsha ekusebenzeni ngeradial kunye ne-loop feed pad-mounted transformer applications, sincoma ukugcina esi sikhokelo siluncedo njengereferensi. Siyazi ukuba ayiphelelanga, nangona kunjalo, zive ukhululekile ukuqhagamshelana nathi ukuba uneminye imibuzo. Sikwasebenza nzima ukugcina uluhlu lwethu lweziguquli kunye neenxalenye zigcwele kakuhle, ke sixelele ukuba unesidingo esikhethekileyo sesicelo.
Ixesha lokuposa: Nov-08-2024