ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
Ulimi
ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
Ukusebenza okuhambisanayo kwama-transformers kusho ukuthi ama-windings ayisisekelo ama-transformer amabili noma ngaphezulu axhunywe ngokuhambisana ku-busbar ye-voltage efanayo, futhi ama-windings wesibili axhunywe ngokuhambisana kubha yebhasi lenye i-voltage.
Incazelo yayo ithi: uma i-transformer eyodwa ihluleka, amanye ama-transformer asebenza ngokufana asengaqhubeka nokusebenza ukuze aqinisekise ukusetshenziswa kwamandla kwabasebenzisi ababalulekile; noma lapho i-transformer idinga ukulungiswa, i-transformer yokulinda ingaxhunywa ngokuhambisana, bese i-transformer okufanele ilungiswe ivaliwe futhi ilungiswe. , engakwazi kuphela ukuqinisekisa ukugcinwa okuhleliwe kwe-transformer, kodwa futhi iqinisekise ukuthi ukunikezwa kwamandla akuphazanyiswa futhi kuthuthukise ukuthembeka kokunikezwa kwamandla.
Ngaphezu kwalokho, ngenxa yenkathi eqinile yomthwalo kagesi, amanye ama-transformer angahoxiswa ekusebenzeni ngenkathi yomthwalo wokukhanya, engakwazi nje ukunciphisa ukulahlekelwa okungekho umthwalo we-transformer, ukuthuthukisa ukusebenza kahle, kodwa futhi kunciphise ukuvuswa okusebenzayo. yamanje, ithuthukise isici samandla wegridi, futhi ithuthukise ukusebenza kahle kwegridi yamandla. umnotho wesistimu.
Ngakho-ke yiziphi izidingo zokusebenza okufanayo kwama-transformer? Lona umbuzo ovame kakhulu. Okokuqala, ake sibheke ukuthi yiziphi izidingo ze-juxtaposition of transformers, bese sixoxa ngezimo ze-juxtaposition.
(1) Ngokuvamile, bheka umfanekiso ongezansi:
Kulesi sithombe, sibona ama-transformer amabili, abhalwe ukuthi T1 kanye ne-T2.
Indlela yokuthola uhlelo:
Ekusebenzeni kwangempela, amabhasi amabili anikwa amandla yiziguquli zawo.
Ngenxa yalokho, kokubili ama-circuit breaker angenayo i-QF1 ne-QF2 avaliwe, kuyilapho i-bus tie breaker QF3 yengxenye ye-busbar eyodwa ivuliwe; uma kunenkinga nge-transformer noma i-medium voltage side yolayini othile ongenayo, njenge-voltage sag eqinile (undervoltage noma ukulahleka kwamandla kagesi) noma ukwehluleka, isinqamuli selayini engenayo salesi sigaba siyavulwa, bese kuvulwa isinqamuli sebhasi i-QF3 ivaliwe; lapho uhlelo lubuyiselwa, kunezindlela ezimbili zokubuyisela:
Indlela yoku-1 yokutakula: Vula i-break tie yebhasi i-QF3, bese uvala i-circuit breaker ehambisanayo. Le ndlela ilula, kodwa ngemva komthwalo ebhasini, njengemoto, idinga ukuqaliswa kabusha ngemva kokuhluleka kwamandla.
Indlela yokubuyisela yesi-2: qala ngokuvala i-breaker circuit engenayo ehambisanayo, khona-ke ama-transformer agijima ngokufana, bese evula i-break tie yebhasi. Le ndlela iyinkimbinkimbi kakhulu, kodwa umthwalo awudingi ukudlula ukwehluleka kwamandla kwesibili ukuze uqale kabusha.
Ake sibheke izimo zokuthi ama-transformer ahlanganiswe:
Okokuqala: izimo ze-transformer ngokwayo
Kubandakanya: indlela ye-wiring ye-transformer ifana nesilinganiso sokuguqulwa, i-impedance voltage ye-transformer iyafana, futhi i-voltage yesibili ye-transformer iyafana.
Okwesibili: izimo zomugqa
Kubandakanya: uhlangothi lwe-voltage ephakathi kufanele luvele kunethiwekhi efanayo yokusabalalisa, isigaba sazo, i-engeli yesigaba sokuqala kanye nemvamisa kuyafana, kanye ne-voltage amplitude nayo iyafana. Ngesikhathi esifanayo, uhlangothi lwe-medium-voltage kufanele lukwazi ukumelana nokushaqeka kwamandla okuqalisa kwehlangothini le-low-voltage.
(2) Uma uhlelo lufakwe ijeneretha, ake sibheke lo mfanekiso olandelayo:
Lesi sibalo siyinkimbinkimbi kancane kunomfanekiso 1. Kukhona i-generator ezimele emfanekisweni, futhi i-circuit breaker ye-generator kanye ne-circuit breaker ye-mains inobudlelwane obuhlangene bokutshala izimali.
Ngenxa yobunkimbinkimbi bobudlelwano bokuphonsa ngaphandle, ku-ABB, i-PLC ivamise ukusetshenziselwa ukwakha umqondo wokuphonsa ngaphandle. Ake sichaze kafushane:
I-1) Ngesikhathi sokusebenza okujwayelekile, i-tie yebhasi ivuliwe, futhi imigqa engenayo yesigaba ngasinye ivaliwe.
2) Uma ukunikezwa kwamandla kagesi wesigaba esithile ehluleka, vula umugqa ongenayo walesi sigaba, bese uvala uthayi webhasi.
I-3) Uma iphutha lisusiwe futhi libuyiselwa, uhlelo luzobuyiselwa ngezindlela ezimbili: ama-transformers ahambisanayo nangenayo. Izimo ezihambisanayo ze-Transformer ziyafana nezingenhla.
I-4) Uma ukwehluleka kwesigaba esithile sokunikezwa kwamandla kagesi kwehluleka ukubuyisela, futhi esinye isigaba sokunikezwa kwamandla kagesi sihluleka futhi, noma izingxenye ezimbili zamandla amakhulu zihluleka ngesikhathi esifanayo, uhlelo luzoqala i-generator. Ngokuya ngokusebenza kokuqala kwejeneretha, kunqunywa ukuthi i-tie yebhasi iyasebenza yini.
I-5) Lapho i-mains ibuyiselwe, kunezindlela ezimbili zokubhekana nayo: indlela yokuqala njengoba kuboniswe kumfanekiso wesi-2, umugqa ongenayo ongenayo kanye nolayini ongenayo we-generator uhlanganisiwe, futhi uhlangothi olulodwa kuphela oluvunyelwe ukuvalwa. Ngalesi sikhathi, vula ulayini we-generator engenayo, bese uvala ulayini ongenayo oyinhloko; indlela yesibili ayinabo ubudlelwano obuxhumene phakathi kolayini ongenayo wamapayipi amakhulu kanye nolayini ongenayo wejeneretha. Ngemuva kokuba i-mains ibuyiselwe, ngaphansi kokuqondiswa kwesistimu, i-generator ivumelaniswa nge-quasi-synchronized ne-mains, bese ulayini ongenayo ongenayo uvaliwe, bese i-generator ikhishwa.
Indlela yesibili ingavimbela umthwalo ukuthi uqalise kabusha ngemva kokuhluleka kwamandla kwesibili. Siyabona ukuthi isimo se-parallel transformers siyafana nesimo esijwayelekile.
(3) Ukusebenza okufanayo kwama-transformers lapho umthamo womthwalo we-transformer eyodwa ungenele
Izimo ezihambisanayo ze-Transformer ziyafana nangaphambili. Ngaphansi kwalesi simo, uma kwenzeka i-short-circuit ohlangothini lomthwalo, inani lamanje le-short-circuit kufanele liphindwe ngenani lama-transformer ngokuhambisana. Ake sibheke isithombe esingezansi:
Kulo mfanekiso, imigqa emibili engenayo kanye ne-tie yebhasi ivaliwe, futhi ama-transformer T1 ne-T2 asebenza ngokufanayo.
Lapho umthwalo wesigaba sebhasi ufinyezwa, womabili ama-transformer afaka isandla se-short-circuit current endaweni ye-short-circuit point, ngakho-ke i-short-circuit current emthwalweni ilingana nokuphindwe kabili i-short-circuit current ye-transformer eyodwa.
Ngakho-ke, izimo zokusebenza okuhambisanayo kwama-transformers yilezi: amandla okuphuka kwesiphakeli sesifunda se-feeder esigabeni ngasinye sebhasi kufanele kube kabili kune-breaker circuit engenayo. Uma lokhu kungenziwanga, ama-transformer awavunyelwe ukusebenza ngokufana.
Kubalulwe ekucacisweni ukuthi ekusebenzeni okuhambisanayo kwama-transformer esikhathini esifushane sokushintshwa kokusebenza, amandla okuphuka kwe-breaker-side circuit breaker angakhethwa ngaphansi kwezimo ezijwayelekile ngaphandle kokuphindaphinda kabili.
(4) Izinzuzo kanye nezinhloso zokusebenza okufanayo kwama-transformer
Thuthukisa umnotho wokusebenza kwe-transformer. Lapho umthwalo ukhuphuka kuze kube yilapho amandla e-transformer eyodwa enganele, i-transformer yesibili ingafakwa ngokufana, futhi lapho umthwalo uncishiswa kuze kube yilapho ama-transformer amabili engadingeki ukunikeza amandla ngesikhathi esifanayo, i-transformer eyodwa ingakhishwa ingasebenzi.
Ikakhulukazi ezindaweni zasemaphandleni, izici zokusetshenziswa kukagesi ngezikhathi ezithile ziyabonakala, futhi ukusebenza okufanayo kwama-transformer kungashintshwa ngokuvumelana nobukhulu bomthwalo kagesi. Ngale ndlela, ukulahlekelwa kwe-transformer ngokwayo kungancishiswa futhi inhloso yokusebenza kwezomnotho ingafinyelelwa.
Thuthukisa ukuthembeka kokunikezwa kwamandla. Lapho enye ye-transformers egijima ngokuhambisana yonakalisiwe, inqobo nje uma isuswa ngokushesha kugridi, enye noma amabili ama-transformer asengakwazi ukunikeza amandla ngokujwayelekile; lapho i-transformer ilungiswa, ngeke ithinte ukusebenza okuvamile kwamanye ama-transformers, ngaleyo ndlela kunciphise amaphutha nokulimala. Ububanzi nemvamisa yokucima kukagesi ngesikhathi sokulungiswa kungathuthukisa ukuthembeka kokunikezwa kwamandla.
Yonga ugesi, qaphela ukonga ugesi futhi wandise ukusebenza kahle. Isibonelo, isiteshi esincane sifakwe ama-transformer amabili angu-4000kVA no-3150kVA. Ngemva kokubala izimo zokusebenza zama-transformers amabili, ngemva konyaka owodwa wokusebenza okufanayo, ukonga amandla kuyi-102,000 Kwh, umphumela wokulondoloza amandla ubonakala kakhulu, futhi ukutshalwa kwezimali kwezimali kuyancishiswa.
