ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
Ulimi
ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
1. Iyini imiphumela yamaqembu ahlukene okuxhumanisa ukusebenza okufanayo kwama-transformer?
Impendulo: Lapho ama-transformer amaqembu ahlukene okuxhuma esebenza ngokufana, isekethe yesibili izokhiqiza umehluko we-voltage ngenxa yama-voltage ahlukene ezinhlangothi zesibili zama-transformer Δ U2, ngoba umehluko wesigaba esiphelele ekuxhumekeni kwe-transformer uyi-multiple of 30 ° Δ Inani le-U2 inkulu. Uma umehluko we-engeli yesigaba sohlangothi lwesibili lwe-parallel transformer ingu-30 °, Δ Inani le-U2 lingu-51.76% we-voltage elinganiselwe. Uma i-voltage ye-short-circuit Uk ye-transformer ingu-5.5%, ukulinganisa kwamanje kungafinyelela izikhathi ezingu-4.7 zamanje ezilinganiselwe, ezingase zishise i-transformer.
Umehluko omkhulu wesigaba ukhiqiza umthamo omkhulu wokulinganisa, ongavunyelwe. Ngakho-ke, ama-transformer amaqembu ahlukene awakwazi ukusebenza ngokufana.
2. Umthamo olinganisiwe kanye ne-voltage yesiyingi esifushane yama-transformer ezigaba ezintathu anenani elifanayo lokuguqulwa kanye neqembu lokuxhuma ngokulandelanayo:
Ngemva kokuziqhuba ngokufana, umthwalo ungu-550OKVA,
Q: ① Umthwalo osatshalaliswa yi-transformer ngayinye?
② Ingakanani isamba esiphelele esingathwala ama-transformer amathathu ngaphandle kokugcwala?
③ Lithini izinga lokusetshenziswa kwenani eliphelele lempahla yesiguquli?
Phendula
Isilinganiso sokusabalalisa se-transformer ngayinye:
Ngemuva kokuthi zisetshenziswe ngokuhambisana, umthwalo ungu-5500KVA,
Q: ① Umthwalo osatshalaliswa yi-transformer ngayinye?
② Ingakanani isamba esiphelele esingathwala ama-transformer amathathu ngaphandle kokugcwala?
③ Lithini izinga lokusetshenziswa kwenani eliphelele lempahla yesiguquli?
Phendula
3. Uyini umehluko phakathi kwama-autotransformer nama-transformer ajwayelekile?
Impendulo: Umehluko phakathi kwe-autotransformer ne-transformer evamile:
(1) Uhlangothi lwayo oluyinhloko nohlangothi lwesibili aluxhunywanga kuphela yizibuthe, kodwa futhi ngogesi, kuyilapho ama-transformer avamile axhunywe kuphela yi-magnetism.
(2) Amandla okuphakelwa kukagesi nge-transformer akhiwe izingxenye ezimbili: amandla kazibuthe kagesi wokungeniswa phakathi kokumayo okuyinhloko kanye nama-winging avamile, kanye namandla okuqhuba aqhutshwa ngokuqondile yi-mawinging eyinhloko.
(3) Njengoba ukujikajika kwe-autotransformer yakhiwe ukujikajika okuyinhloko kanye nokujika okuvamile, inani lokujika le-wiring eyinhloko lingaphansi ngokuhambisana nenombolo nokuphakama kokujika kokujika okuyinhloko kwe-transformer evamile, umsinga wamajika ovamile. ukusonga kanye nokusabela kokuvuza okukhiqizwa. Ukusabela kwesiyingi esifushane X kwe-autotransformer yizikhathi (1-1/K) zokusabela kwesiyingi esifushane X yesiguquli esijwayelekile, futhi u-K yisilinganiso soshintsho.
(4) Uma i-autotransformer ifakwe i-winging yesithathu, i-winging yayo yesithathu ithatha umthamo ojwayelekile wokuvunguza. Ithinta imodi yokusebenza kanye nomthamo wokushintshanisa we-autotransformer.
(5) Ngenxa yokuthi indawo engathathi hlangothi ye-autotransformer kufanele isekelwe phansi, ukulungiselelwa nokucushwa kokuvikela okudluliswayo kuyinkimbinkimbi.
(6) I-Autotransformer incane ngosayizi, ilula ngesisindo, ilungele ukuhamba futhi iphansi ngezindleko.
4. Yiziphi izinkinga okufanele zinakwe ekusebenzeni kwe-autotransformer?
Impendulo: Izinkinga okufanele ziqashelwe ngesikhathi sokusebenza kwe-autotransformer:
(1) Njengoba izinhlangothi eziyinhloko nesesibili ze-autotransformer zinokuxhumeka kukagesi okuqondile, indawo engathathi hlangothi ye-autotransformer esetshenziswa kugridi yamandla kufanele ibe nokwethenjelwa futhi isekelwe ngokuqondile ukuze kuvinjelwe ukunyuka kwamandla kagesi ohlangothini lwe-voltage ephansi okubangelwa i-single- Iphutha lokumisa isigaba ohlangothini lwe-high-voltage.
(2) Ngenxa yokuxhumana okuqondile kukagesi phakathi kohlangothi oluyinhloko nohlangothi lwesibili, lapho uhlangothi lwamandla kagesi aphezulu lungaphansi kwamandla kagesi, lokho kungabangela ukuguquguquka okukhulu kakhulu kwe-voltage ohlangothini lwe-low-voltage. Ukuze ugweme le ngozi, izibambi zombani kufanele zifakwe kuzo zombili izinhlangothi eziyinhloko nesesibili.
(3) Njengoba i-impedance yesifunda esifushane ye-autotransformer incane futhi isifunda sayo esifushane samanje sikhulu kune-transformer evamile, kuyadingeka ukuthatha izinyathelo zokunciphisa umjikelezo wesifunda esifushane uma kunesidingo.
(4) Ngesikhathi sokusebenza, i-current of the common winding izoqashwa ukuze yenze ibe ngaphansi komthwalo. Uma kunesidingo, imodi yokusebenza ye-winding yesithathu ingalungiswa ukuze kwandiswe umthamo wokushintshanisa we-autotransformer.
5. Dweba i-autotransformer O - Y0 nge-wiring yesithathu/ Δ- Umdwebo wezintambo kanye nomdwebo we-vector ka-12-11
Impendulo:
Umdwebo wezintambo
Umdwebo we-vector ongaba khona
6. Yiziphi izinhlobo ze-transformer voltage regulation? Kungani ompompi be-transformer ohlangothini lwe-high-voltage?
Impendulo: Kunezindlela ezimbili zokulawula i-voltage ye-transformer: ekulawuleni i-voltage yokulayisha kanye nomthetho we-voltage wokuvala:
Ekulawulweni kwe-voltage yokulayisha kusho ukuthi i-transformer ingakwazi ukulungisa indawo yayo yompompi ngesikhathi sokusebenza, ngaleyo ndlela iguqule isilinganiso se-transformer ukuze kuzuzwe inhloso yokulawulwa kwamandla kagesi. Kunezindlela ezimbili zokulawula i-voltage yomthwalo we-voltage: ukulawulwa kwe-voltage ekupheleni komugqa kanye nokulawula amandla kagesi wephoyinti angathathi hlangothi, okungukuthi, umehluko phakathi kompompi we-transformer ekugcineni komugqa wokujika kwe-high-voltage noma ohlangothini oluphakathi nendawo ephezulu. - ukuguqulwa kwe-voltage. Ukuthepha ohlangothini olungathathi hlangothi kunganciphisa izinga le-insulation lempompi ye-transformer, enezinzuzo ezisobala, kodwa kudinga ukuthi iphuzu elingathathi hlangothi le-transformer kufanele lisekelwe ngokuqondile ngesikhathi sokusebenza.
Awukho umthetho we-voltage womthwalo obhekisela ekulawuleni indawo kampompi we-transformer uma amandla ehluleka nokugcinwa, ukuze kuguqulwe isilinganiso se-transformer ukuze kuzuzwe inhloso yokulawulwa kwamandla kagesi.
Umpompi we-transformer ngokuvamile uthathwa ohlangothini lwe-high-voltage, olubheka kakhulu:
(1) I-high-voltage winding ye-transformer ngokuvamile ingaphandle, futhi uxhumano lwe-lead out kampompi lulula;
(2) Igagasi ohlangothini lwe-high-voltage lincane, futhi ingxenye yekhondatha yengxenye yamanje yokuthwala yolayini ophumayo kanye nesishintshi sempompi sincane. Umthelela wokuxhumana okungalungile ungaxazululwa kalula.
Empeleni, umpompi ungatholakala kunoma yiluphi uhlangothi, futhi ukuqhathanisa kwezomnotho nezobuchwepheshe kuzokwenziwa. Isibonelo, umpompi we-500kV yesiguquli esisuka phansi esikhulu uthathwa ohlangothini lwe-220kV, kuyilapho uhlangothi lwe-500kV lulungisiwe.
7. Iyini i-transformer overexcitation? Kwenzeka kanjani ukuthi i-overexcitation ye-transformer ibonakale?
Impendulo: Lapho i-voltage ye-transformer ikhula noma imvamisa iyancipha, ukuminyana kwe-magnetic flux okusebenzayo kuzokwanda. I-saturation ye-transformer core ibizwa ngokuthi i-transformer overexcitation.
Ngemuva kokuthi isistimu yamandla inqanyuliwe ngenxa yengozi, ukwenqatshwa komthwalo we-overvoltage, i-ferromagnetic resonance overvoltage, ukulungiswa okungafanele kokuxhumeka kompompi we-transformer, i-no-load transformer ekupheleni komugqa omude noma okunye ukungahambi kahle, ukwanda ngaphambi kwesikhathi kwe-excitation yamanje ngaphambi kwe-generator. imvamisa ifinyelela inani elilinganiselwe, ukuzithokozisa kwejeneretha, nezinye izimo zamanye amasistimu zingase zikhiqize amandla kagesi aphezulu ukuze kubangele ukweqisa kwe-transformer.
8. Yimiphi imiphumela engaba khona ye-transformer overexcitation? Ungakugwema kanjani?
Impendulo: Uma i-voltage ye-transformer idlula i-10% ye-voltage elinganisiwe, i-transformer core izogcwala futhi ukulahlekelwa kwensimbi kuzokwanda. Ukuvuza kwamagnetic kukhulisa ukulahleka kwamanje kwe-eddy yezingxenye zensimbi njengegobolondo lebhokisi, okubangela ukushisa kwe-transformer, ukuguga kwe-insulation, kuthinta impilo yesevisi ye-transformer ngisho nokushisa i-transformer.
Ukugwema:
(1) Vimbela ukusebenza ngamandla kagesi amaningi. Ngokuvamile, lapho i-voltage iphezulu, yilapho i-overexcitation ibucayi kakhulu, futhi isikhathi esivunyelwe sokusebenza siba sifushane.
(2) Engeza ukuvikelwa kwe-overexcitation: thumela isignali ye-alamu noma unqamule i-transformer ngokusho kwejika lesici se-transformer kanye nokuphindaphinda okuvumelekile okuvunyelwe okungaphezulu.
9. Yiziphi izinsiza zokuvikela ukuphepha ezihlinzekwa ngesakhiwo somzimba we-transformer? Uyini umsebenzi wayo oyinhloko?
Impendulo: Izinsiza zokuvikela esakhiweni somzimba we-transformer zifaka:
(1) Umlondolozi
Umthamo wayo ungama-8-10% kawoyela we-transformer. Umsebenzi wayo ukwamukela ukuguqulwa kwevolumu kawoyela we-transformer ngenxa yokushintsha kwezinga lokushisa, ukunciphisa ukuxhumana phakathi kukawoyela we-transformer nomoya, nokunciphisa izinga lomswakama kawoyela kanye ne-oxidation. I-absorber umswakama ifakwe ku-conservator ukuvimbela umoya ukuthi ungangeni ku-transformer.
(2) Isibambisi somswakama nesihlanza uwoyela
I-absorber umswakama, eyaziwa nangokuthi i-respirator, igcwele i-adsorbent, okuwuhlobo lwe-silica gel olucushiwe. Ingxenye yejeli ye-silica enemibala evame ukufakwa kuyo. Uma okuluhlaza okwesibhakabhaka kuba bomvu, kubonisa ukuthi i-adsorbent iye yathinteka ngomswakama futhi kufanele yomiswe noma ishintshwe.
Isihlanzi samafutha sibizwa nangokuthi isihlungi. Isilinda samafutha ahlanzekile sigcwele i-adsorbent, okuyi-silica gel activated alumina. Lapho amafutha edlula ku-oil purifier futhi athintana ne-adsorbent, amanzi, i-asidi ne-oxide ku-oil purifier iyamuncwa, okwenza amafutha ahlanzeke futhi andise impilo yesevisi yamafutha.
(3) Ipayipi elingaqhumi (umzila womoya wokuphepha)
Ipayipi elingaqhumi lifakwe phezu kwesembozo se-transformer tank njengesivikelo sokusiza ekucindezelekeni okuphezulu ku-tank yamafutha uma kwenzeka ukwehluleka kwangaphakathi kwe-transformer.
I-valve yokukhulula ingcindezi iye yasetshenziswa kuma-transformer amakhulu esimanje ukuze athathele indawo yokuphepha emoyeni. Lapho ingcindezi yephutha yangaphakathi ye-transformer ikhuphuka, i-valve yokukhulula ingcindezi iyasebenza kanye noxhumana nabo baxhumeke ku-alamu noma ukukhubeka.
Ngaphezu kwalokho, i-transformer nayo inokuvikelwa kwegesi, i-thermometer, imitha kawoyela kanye namanye amadivaysi okuvikela ukuphepha.
10. Uyini umehluko phakathi kwe-voltage transformer kanye ne-transformer yamanje ezimisweni zabo zokusebenza?
Impendulo: I-voltage transformer isetshenziswa kakhulu ukukala i-voltage, kanti i-transformer yamanje isetshenziselwa ukukala okwamanje.
(1) Uhlangothi lwesibili lwe-transformer yamanje lungaba yisifunda esifushane, kodwa alukwazi ukuvuleka ngokujikeleza; Uhlangothi lwesibili lwe-voltage transformer lungaba isifunda esivulekile, kodwa hhayi isifunda esifushane.
(2) Uma kuqhathaniswa nomthwalo ohlangothini lwesibili, i-impedance eyinhloko yangaphakathi ye-voltage transformer incane kangangokuthi inganakwa, futhi i-voltage transformer ingabhekwa njengomthombo we-voltage; Ukumelana okuyinhloko kwangaphakathi kwe-transformer yamanje kukhulu kangangokuthi kubhekwa njengomthombo wamanje onokumelana okungapheli kwangaphakathi.
(3) Uma i-voltage transformer isebenza ngokujwayelekile, ukuminyana kazibuthe kuseduze nenani lokugcwala, futhi i-voltage iyehla lapho uhlelo lwehluleka; Ubuningi be-magnetic flux buyancipha, futhi ubukhulu be-magnetic flux buphansi kakhulu lapho i-transformer yamanje isebenza ngokujwayelekile. Uma isistimu ifinyezwa, i-current ohlangothini oluyinhloko iyanda, okwandisa kakhulu ukuminyana kwe-magnetic flux, futhi ngezinye izikhathi kuze kudlule inani lokugcwala, okubangela ukwanda kwephutha lokukhishwa kwesibili kwamanje. Ngakho-ke, zama ukukhetha i-transformer yamanje okungelula ukuyigcwalisa.
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