Munyika yetransformer, mazwi ekuti "loop feed" uye "radial feed" anonyanya kubatanidzwa neHV bushing dhizaini ye compartmentalized padmount transformers. Aya mazwi, zvisinei, haana kubva kune transformers. Ivo vanobva kune yakafara pfungwa yekugovera simba mumasisitimu emagetsi (kana maseketi). A transformer inodaidzwa kuti loop feed transformer nekuti dhizaini dhizaini yaro yakanangana neiyo loop yekugovera sisitimu. Izvo zvinoshandawo kune matransformer atinoisa se radial feed - yavo bushing dhizaini inowanzoenderana kune radial masisitimu.
Pamhando mbiri dzevashanduri, iyo loop feed version ndiyo inonyanya kuchinjika. Iyo loop feed unit inogona kugarisa ese ari maviri radial uye loop system masisitimu, nepo radial feed ekushandura anenge anogara achionekwa mune radial masisitimu.
Radial uye Loop Feed Distribution Systems
Ese ari maviri radial uye loop masisitimu anovavarira kuita chinhu chimwe chete: tumira epakati voltage simba kubva kune yakajairwa sosi (kazhinji chiteshi) kune imwechete kana anopfuura nhanho-pasi-inoshandura inoshumira mutoro.
Radial feed ndiyo iri nyore pane maviri. Fungidzira denderedzwa rine mitsetse yakati wandei (kana ma radians) ichibva pane imwe nzvimbo yepakati, sezvakaratidzwa muMufananidzo 1. Iyi poindi yepakati inomiririra kunobva simba, uye masikweya ari kumagumo emutsara wega wega anomiririra nhanho-pasi ma transformer. Muchigadziro ichi, shanduri yega yega inodyiswa kubva panzvimbo imwe chete muhurongwa, uye kana simba remagetsi richivhiringidzwa kuitira kugadzirisa, kana kana kukanganisa kukaitika, iyo yose inodzika kusvikira nyaya yacho yagadziriswa.
Mufananidzo 1: Dhiagiramu iri pamusoro inoratidza ma transformer akabatana mune radial kugovera system. Nzvimbo yepakati inomiririra kunobva simba remagetsi. Sikweya yega yega inomiririra transformer yega yega inodyiswa kubva kune imwechete magetsi magetsi.
Mufananidzo 2: Mune loop feed yekugovera sisitimu, ma transformer anogona kudyiswa neakawanda masosi. Kana kutadza kweiyo feeder tambo kumusoro kweChitubu A kukaitika, sisitimu inogona kufambiswa netambo dzekudyisa dzakabatana neChitubu B pasina kurasikirwa kukuru kwesevhisi.
Mune loop system, simba rinogona kupihwa kubva kune maviri kana anopfuura masosi. Panzvimbo pekudyisa ma transformer kubva kune imwe nzvimbo yepakati semuMufananidzo 1, iyo loop system inoratidzwa muMufananidzo 2 inopa nzvimbo mbiri dzakaparadzana kubva kune simba rinogona kupihwa. Kana imwe sosi yemagetsi ikaenda kunze kwenyika, imwe inogona kuenderera mberi nekupa simba kuhurongwa. Iyi redundancy inopa kuenderera kwesevhisi uye inoita kuti loop system ive sarudzo inosarudzika kune vakawanda vashandisi vekupedzisira, sezvipatara, makampasi emakoreji, nhandare dzendege, uye makuru maindasitiri. Mufananidzo 3 unopa tarisiro yepedyo-yepamusoro-yevaviri matransformer anoratidzwa mu loop system kubva kuMufananidzo 2.
Mufananidzo 3: Mufananidzo uri pamusoro unoratidza maviri loop feed akagadziridzwa matransformer akabatana pamwechete mu loop system ine sarudzo yekudyiswa kubva kune maviri emagetsi magetsi.
Musiyano uripo pakati peradial uye loop masisitimu unogona kupfupikiswa sezvizvi:
Kana transformer inogamuchira simba kubva pane imwe chete poindi mudunhu, saka iyo system ndeye radial.
Kana iyo transformer inokwanisa kugamuchira simba kubva kune maviri kana anopfuura mapoinzi mudunhu, saka iyo system ndeye loop.
Kunyatsoongorora kwevashanduri munharaunda kunogona kusaratidza zvakajeka kana hurongwa huri radial kana loop; sezvatakataura pakutanga, zvese loop feed uye radial feed transformers inogona kugadzirwa kuti ishande mune chero dunhu gadziriro (zvisinei zvakare, kashoma kuona radial feed transformer mune loop system). Iyo yemagetsi blueprint uye imwe-mutsara ndiyo nzira yakanakisa yekuona marongero nekugadzirisa system. Izvo zviri kutaurwa, nekunyatsotarisisa iyo yekutanga bushing gadziriso yeradial uye loop feed transformers, kazhinji zvinogoneka kutora mhedziso ine ruzivo nezve system.
Radial uye Loop Feed Bushing Configurations
Mupadmount transformers, musiyano mukuru pakati pe radial uye loop feed iri mune yekutanga / HV bushing kumisikidzwa (kuruboshwe rwetransformer cabinet). Mune radial feed primary, pane imwe bushing kune imwe neimwe yevatatu vari kuuya phase conductor, sezvinoratidzwa mumufananidzo 4. Iyi marongerwo inowanzowanikwa apo chete transformer imwe inodiwa kusimbisa nzvimbo yose kana nzvimbo. Sezvatichaona gare gare, radial feed transformers inowanzoshandiswa kune yekupedzisira unit munhevedzano yetransformer yakabatana pamwe neye loop feed primaries (ona Mufananidzo 6).
Mufananidzo 4:Radial feed masisitimu akagadzirirwa imwe iri kuuya yekutanga feed.
Loop feed primaries ane mabhushi matanhatu pane matatu. Kurongeka kwakajairika kunozivikanwa seV Loop ine seti mbiri dzemakwenzi matatu akadzedzereka (ona Mufananidzo 5)-makwenzi matatu kuruboshwe (H1A, H2A, H3A) uye matatu kurudyi (H1B, H2B, H3B), sekutsanangurwa kwazvakaitwa. muIEEE Std C57.12.34.
Mufananidzo 5: Iyo loop feed kumisikidza inopa mukana wekuva maviri ekutanga mafeed.
Iyo inonyanya kushandiswa yeatanhatu-bushing primary ndeyekubatanidza akati wandei loop feed transformers pamwechete. Mune iyi setup, iyo inouya yekushandisa feed inounzwa mune yekutanga transformer mumutsara. Yechipiri seti yetambo inomhanya kubva kuB-side bushings yekutanga unit kusvika kuA-side bushings yeinotevera transformer munhevedzano. Iyi nzira ye daisy-chaining maviri kana anopfuura ma transformer mumutsara inonziwo "loop" yevashanduri (kana "looping transformers pamwechete"). Zvakakosha kuita mutsauko pakati pe "loop" (kana daisy chain) yevashanduri uye loop feed sezvo ine chekuita ne transformer bushings uye magetsi ekugovera masisitimu. Mufananidzo 6 unotsanangura muenzaniso wakakwana we loop ye transformers yakaiswa mu radial system. Kana simba rikarasika pachitubu, ese matatu matransformer achange ari offline kusvika simba radzoserwa. Ziva, kuongororwa kweiyo radial feed unit kurudyi kurudyi kungaratidza radial system, asi izvi hazvingave zvakajeka kana tikangotarisa mamwe maviri mayuniti.
Mufananidzo 6: Iri boka revashanduri rinodyiswa kubva kune imwechete sosi kutanga pane yekutanga transformer munhevedzano. Chikafu chekutanga chinopfuudzwa kuburikidza neshanduko yega yega mumutsara kune yekupedzisira unit kwainogumiswa.
Internal primary side bayonet fuses inogona kuwedzerwa kune imwe neimwe transformer, sezvinoratidzwa mumufananidzo 7. Primary fusing inowedzera imwe yekudzivirira yegadziriro yemagetsi-kunyanya apo ma transformer akawanda akabatanidzwa pamwe chete akabatanidzwa.
Mufananidzo 7:Imwe neimwe transformer yakashongedzwa neyayo yemukati overcurrent kudzivirira.
Kana chikamu chechipiri chikanganiso chikaitika pane imwe unit (Mufananidzo 8), iyo yekutanga fusing inozokanganisa kuyerera kweiyo overcurrent pane yakakanganiswa transformer isati yakwanisa kusvika kune mamwe mayuniti, uye yakajairika ikozvino icharamba ichiyerera ichipfuura iyo yakanganisa unit kusvika. ma transformer akasara mudunhu. Izvi zvinoderedza nguva yekudzikira uye zvinoendesa kutadza kune imwechete unit apo akati wandei mayuniti akabatana pamwechete mune rimwe bazi redunhu. Iyi setup ine yemukati overcurrent chengetedzo inogona kushandiswa muradial kana loop masisitimu-mune chero mamiriro ezvinhu, iyo yekudzinga fuse inoparadzanisa iyo yakanganisa unit uye mutoro waunoshanda.
Mufananidzo 8: Kana pakaitika dambudziko remutoro pane imwe yuniti munhevedzano yevashanduri, yekutanga mativi fusing inoparadzanisa iyo yakanganisa unit kubva kune mamwe matransformer ari muchiuno-kudzivirira kumwe kukuvadza uye kubvumira kushanda kusingatyoke kune yese system.
Kumwe kushandiswa kweiyo loop feed bushing kumisikidza ndeyekubatanidza maviri akapatsanurwa sosi feed (Feed A uye Feed B) kune imwechete unit. Izvi zvakafanana nezvakaitika kare muMufananidzo 2 uye Figure 3, asi nechikamu chimwe chete. Nechishandiso ichi, imwe kana akawanda akanyudzwa oiri-akanyudzwa rotary-mhando selector switch anoiswa mushanduko, achibvumira iyo unit kuchinjana pakati pemafudhi maviri sezvinodiwa. Zvimwe zvigadziriso zvinobvumira kushandura pakati pega yega sosi feed pasina kurasikirwa kwechinguva kwesimba kumutoro urikupihwa-yakakosha mukana kune vashandisi vekupedzisira vanokoshesa kuenderera kwesevhisi yemagetsi.
Mufananidzo 9: Dhiagiramu iri pamusoro inoratidza imwe loop feed transformer mune loop system ine sarudzo yekudyiswa kubva kune imwe yemagetsi maviri.
Heano mumwe muenzaniso weiyo loop feed transformer yakaiswa mune radial system. Mumamiriro ezvinhu aya, dare rekutanga rinongova neseti imwe chete yemakondakita akamhara paA-side bushings, uye yechipiri seti yeB-side bushings inogumiswa nemakapu akavharirwa kana magokora. Iyi gadziriro yakanakira chero radial feed application uko chete transformer imwe inodiwa mukuiswa. Kuisa midziyo yekudzivirira yekudzivirira paB-side bushings zvakare ndiyo yakajairwa yekumisikidzwa kweyekupedzisira transformer muketani kana nhevedzano ye loop feed units (zvakajairwa, kuvhiya kudzivirira kunoiswa pachikamu chekupedzisira).
Mufananidzo 10: Heunoi muenzaniso weloop feed primary ine makwenzi matanhatu apo yechipiri matatu B-side bushings inogumiswa neyakafa pamberi pegokora. Iyi gadziriso inoshanda kune imwe chete transformer pachayo, uye zvakare inoshandiswa kune yekupedzisira transformer munhevedzano yezvikamu zvakabatana.
Izvo zvakare zvinogoneka kudzokorodza iyi gadziriso ine matatu-bushing radial feed yepakutanga uchishandisa inotenderera inotenderedza-kuburikidza (kana feedthru) inoisa. Yese yekudyisa-kuburikidza nekuisa inokupa iwe sarudzo yekuisa imwe tambo yekumisa uye imwe yakafa kumberi kwegokora inosunga pachikamu. Iyi gadziriso ine feed-kuburikidza nekuisa zvakare inoita kuti kumhara imwe seti yetambo dze loop system application zvinogoneka, kana iyo mitatu yekuwedzera yekubatanidza inogona kushandiswa kupa simba kune imwe transformer munhevedzano (kana loop) yemayunitsi. Kudyisa-kuburikidza nekugadzirisa ne radial transformers haibvumiri sarudzo yekusarudza pakati peseti yakasiyana yeA-side uye B-side bushings ine mukati mukati mekushandura, iyo inoita kuti ive sarudzo isingadikanwi kune loop systems. Chiyero chakadaro chinogona kushandiswa kwechinguvana (kana kurojesa) mhinduro kana loop feed transformer isiri kuwanikwa nyore, asi haisi mhinduro yekusingaperi.
Mufananidzo 11: Inotenderera yekudya-kuburikidza nekuisa inogona kushandiswa kuwedzera zvinosunga kana imwe seti yetambo dzinobuda kune radial feed bushing setup.
Sezvambotaurwa pakutanga, loop feed transformers anoshandiswa zvakanyanya mu radial masisitimu sezvo achigona kugadzirwa nyore-ega kushanda sezvakaratidzwa pamusoro apa muFigure 10, asi anenge anogara ari ega sarudzo ye loop masisitimu nekuda kweayo matanhatu-bushing. layout. Nekumisikidzwa kwemafuta-akanyudzwa selector switching, akawanda masource feed anogona kudzorwa kubva kuprimary cabinet yeyuniti.
Nheyo ine maelector switches inosanganisira kutyora kuyerera kweazvino pamakoiri etransformer sezvakangoita nyore on / off switch ine imwezve kugona yekudzoreredza kuyerera kwazvino pakati peA-side neB-side bushings. Iyo iri nyore yekusarudzika switch yekumisikidza kuti unzwisise ndiyo matatu-mbiri-chinzvimbo switch sarudzo. Sezvinoratidzwa Mufananidzo 12, imwe on/off switch inodzora transformer pachayo, uye maviri ekuwedzera anodzora A-side uye B-side anodyisa ega. Iyi gadziriso yakakwana kune loop system setups (semufananidzo 9 pamusoro) iyo inoda kusarudza pakati pezviviri zvakaparadzana masosi chero nguva. Iyo inoshandawo zvakanaka kune radial masisitimu ane akawanda mayunitsi daisy-akasungwa pamwechete.
Mufananidzo 12:Muenzaniso we transformer ine matatu ega ega maviri-nzvimbo switch padivi rekutanga. Rudzi urwu rwekusarudzira switching inogonawo kushandiswa neamwechete-chinzvimbo switch, zvisinei, iyo mana-chinzvimbo sarudzo haina kunyatsoita zvakasiyana, sezvo isingabvumire kudzima / kudzima switch ye transformer pachayo zvisinei neA-side uye. B-side feeds.
Mufananidzo 13 unoratidza matatu ekushandura, imwe neimwe iine matatu maviri-nzvimbo switch. Yekutanga yuniti kuruboshwe ine ese matatu switch munzvimbo yakavharwa (pa) chinzvimbo. Transformer iri pakati ine zvese A-side uye B-side switch munzvimbo yakavharwa, nepo switch inodzora iyo transformer coil iri munzvimbo yakavhurika (yakadzimwa). Muchiitiko ichi, simba rinopiwa kumutoro uri kushandiswa neyokutanga transformer uye yekupedzisira transformer muboka, asi kwete kune yepakati unit. Munhu mumwe chete A-side uye B-side on / off switches anobvumira kuyerera kwezvino kuti kupfuudzwa kune imwe inotevera unit mumutsara apo iyo on / off switch ye transformer coil yakazaruka.
Mufananidzo 13: Nekushandisa akawanda maelector switch pane yega yega transformer, iyo unit iri pakati inogona kuparadzaniswa pasina kurasikirwa kwesimba kumayuniti ari pedyo.
Kune mamwe magadzirirwo anogoneka ekuchinja, senge mana-nzvimbo switch-iyo neimwe nzira inosanganisa matatu ega ega maviri-zvinzvimbo switch kuita mudziyo mumwe (nemisiyano mishoma). Zvinzvimbo zvina zvinoshanduka zvinonziwo "loop feed switch" sezvo zvichishandiswa chete ne loop feed transformers. Loop feed switch inogona kushandiswa mune radial kana loop masisitimu. Mune radial system, iyo inoshandiswa kuparadzanisa transformer kubva kune vamwe muboka semufananidzo 13. Muchirongwa cheloop, shanduko dzakadaro dzinowanzoshandiswa kudzora simba kubva kune imwe yezviviri zvinopinda (semufananidzo 9).
Kutarisa kwakadzama kweloop feed switch kuri kupfuura chiyero chechinyorwa ichi, uye tsananguro pfupi yadzo pano inoshandiswa kuratidza chikamu chakakosha chemukati cheshanduko chekuchinja chinotambwa mu loop feed transformers yakaiswa mu radial uye loop masisitimu. Kune akawanda mamiriro apo inotsiva shanduko inodiwa mu loop feed system, mhando yekuchinja yakurukurwa pamusoro inozodiwa. Matatu-maviri-chinzvimbo switch anopa zvakanyanya kuita zvakasiyana, uye nechikonzero ichi, iwo mhinduro yakanaka mune inotsiva transformer yakaiswa mune loop system.
Summary
Semutemo wezvigunwe, radial feed pad-yakaiswa transformer inowanzoratidza radial system. Iine loop feed pad-yakaiswa transformer, zvinogona kuoma kuita kutsunga nezve dunhu rekugadzirisa. Kuvapo kwemukati-akanyudzwa oiri-akanyudzwa anosarudza switch kazhinji anoratidza loop system, asi kwete nguva dzose. Sezvambotaurwa pakutanga, loop masisitimu anowanzo shandiswa uko kuenderera kwesevhisi kunodiwa, sezvipatara, nhandare dzendege, uye makampasi emakoreji. Nekumisikidzwa kwakaomarara seizvi, imwe gadziriso inogara ichidikanwa, asi akawanda ekutengeserana uye maindasitiri maapplication anotendera kumwe kuchinjika mukugadziriswa kwepadhi-yakaiswa transformer iri kupihwa-kunyanya kana system iri radial.
Kana iwe uri mutsva pakushanda neradial uye loop feed pad-yakaiswa transformer application, isu tinokurudzira kuchengeta iri gwara riri nyore sereferensi. Tinoziva kuti haina kuzara, zvisinei, saka inzwa wakasununguka kutaura nesu kana uine mimwe mibvunzo. Isu tinoshandawo nesimba kuti tichengetedze yedu yemagetsi matransformer uye zvikamu zvakazara, saka tizivise kana uine chaiyo application yaunoda.
Nguva yekutumira: Nov-08-2024