ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
Ulimi
ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
Imishini yokuvikela ehambisanayo izofakelwa amaphutha e-short-circuit yezintambo eziholayo ze-transformer, bushings kanye nangaphakathi, futhi izohlangabezana nezidingo ezilandelayo:
1) I-transformer egijimayo eyodwa engu-10MVA nangaphezulu kanye ne-parallel running transformer engu-6.3MVA nangaphezulu kufanele ifakwe isivikelo esihlukile se-longitudinal. Ama-transformer abalulekile ane-6.3MVA nangaphansi asebenza ngokuzimela angabuye afakwe ukuvikela okuhlukile kwe-longitudinal.
2) Ama-Transformer angaphansi kuka-10MVA angahlonyiswa ngokuvikelwa kwamanje kwekhefu elisheshayo kanye nokuvikela okudlulele. Kuma-transformer angu-2MVA nangaphezulu, uma i-coefficient yamanje yokuzwela kwekhefu ingahlangabezani nezidingo, ukuvikela okuhlukile kwe-longitudinal kufanele kufakwe.
3) 0.4MVA nangaphezulu, i-voltage eyinhloko ingu-10kV nangaphansi, futhi ikhoyili iyi-transformer enoxhumo lwe-delta-star, futhi ukuvikelwa kwe-overcurrent kwezigaba ezimbili kwezigaba ezintathu kungasetshenziswa.
4) Amadivayisi ahlukahlukene okuvikela acaciswe kulesi sihloko azosebenza ukuze anqamule ama-circuit breaker ohlangothini ngalunye lwe-transformer.
Imishini yokuvikela ehambisanayo izofakelwa amaphutha e-short-circuit yezintambo eziholayo ze-transformer, bushings kanye nangaphakathi, futhi izohlangabezana nezidingo ezilandelayo:
1) I-transformer egijimayo eyodwa engu-10MVA nangaphezulu kanye ne-parallel running transformer engu-6.3MVA nangaphezulu kufanele ifakwe isivikelo esihlukile se-longitudinal. Ama-transformer abalulekile ane-6.3MVA nangaphansi asebenza ngokuzimela angabuye afakwe ukuvikela okuhlukile kwe-longitudinal.
2) Ama-Transformer angaphansi kuka-10MVA angahlonyiswa ngokuvikelwa kwamanje kwekhefu elisheshayo kanye nokuvikela okudlulele. Kuma-transformer angu-2MVA nangaphezulu, uma i-coefficient yamanje yokuzwela kwekhefu ingahlangabezani nezidingo, ukuvikela okuhlukile kwe-longitudinal kufanele kufakwe.
3) 0.4MVA nangaphezulu, i-voltage eyinhloko ingu-10kV nangaphansi, futhi ikhoyili iyi-transformer enoxhumo lwe-delta-star, futhi ukuvikelwa kwe-overcurrent kwezigaba ezimbili kwezigaba ezintathu kungasetshenziswa.
4) Amadivayisi ahlukahlukene okuvikela ashiwo kulesi sihloko azosebenza ukuze anqamule ama-circuit breaker ohlangothini ngalunye lwe-transformer.
Ngesikhathi sokusebenza kwe-transformer, ngenxa yamaphutha angaphakathi, ngezinye izikhathi asikwazi ukukhomba nokuthatha izinyathelo ngesikhathi, okulula ukubangela ezinye izingozi. Ngemuva kokuvikelwa kokudluliselwa kwegesi, ukuvela kwezigameko ezifanayo kungagwenywa ngezinga elithile.
■ Isingeniso Sokuvikela Igesi
Ngesikhathi sokusebenza kwe-transformer, ngenxa yamaphutha angaphakathi, ngezinye izikhathi asikwazi ukukhomba nokuthatha izinyathelo ngesikhathi, okulula ukubangela ezinye izingozi. Ngemuva kokuvikelwa kokudluliselwa kwegesi, ukuvela kwezigameko ezifanayo kungagwenywa ngezinga elithile.
Ukuvikelwa kwegesi kuhlukaniswe ukuvikelwa kwegesi elula kanye nokuvikelwa kwegesi esindayo. Isimiso sesenzo sokukhanya negesi esindayo sihlukile. Igesi ekhanyayo ingenxa yokuthi igesi inqwabelana enkomishini evulekile ibheke phansi, ukuze inkomishi evulekile intante phezulu ngaphansi kwesenzo sokunyakaza kwamafutha e-transformer, ikhanyise i-relay, futhi ikhiphe i-alamu, okukhombisa ukuthi iphutha i-transformer incane, futhi uwoyela we-transformer Ukubola kwe-thermal kukhiqiza igesi. Igesi esindayo ibangelwa iphutha elibi kakhulu ku-transformer, lapho uwoyela we-transformer ushisisa futhi unwebeka ngokushesha futhi ugijimela emcamelweni kawoyela, i-baffle yangaphakathi yegesi esindayo igudluzwa i-engeli ethile, futhi i-relay ivuliwe khiqiza isignali. Indawo yokufaka yohambo evamile. Ngaphandle uma kukhona ukuhlunga uwoyela, ukugcwalisa kabusha uwoyela nokunye ukusebenza. Ngokuvamile, ukuvikelwa okungewona ugesi kwama-transformer amakhulu acwiliswe ngamafutha kuhlanganisa: ukukhululwa kwengcindezi, ukuguqulwa kwengcindezi, njll.
Ukuvikelwa kwegesi kungenye yezivikelo eziyinhloko zama-transformers, okungezona ezokuvikela okungezona ugesi. Umehluko omkhulu phakathi kwalokho okubizwa ngokuthi ukukhanya nokuvikelwa kwegesi esindayo umehluko wenani lokusetha le-relay yegesi. Igesi elincane lithumela kuphela isignali ye-alamu, hhayi ukukhubeka, futhi igesi enzima izokhubeka. I-voltage ye-zero-sequence ilingana nesamba se-phasor yama-voltage ezigaba ezintathu. Indlela yokubala yokulandelana kukaziro yamanje iyafana.
■ Iyini isimiso sokuvikela igesi esindayo
Kuthiwa ukuvikelwa kwegesi kwe-transformer kusekelwe kumgomo we-float relay relay. Inkomishi yamafutha ixhunywe ekamelweni le-transformer. Lapho i-transformer igcwele kakhulu, i-overcurrent ikhiqiza igesi ukwenza i-float yehle endaweni ethile. I-relay yokuqala ixhunywe ekukhanyeni. I-alamu yegesi, igesi iyaqhubeka nokwehla lapho i-float inyuswa, futhi i-relay yesibili ixhunywe kugesi esindayo ukuze ihambe iswishi.
■ Umehluko phakathi kwesimiso sesenzo sokuvikela igesi elula nokuvikelwa kwegesi esindayo
Ukuvikelwa kwegesi kuyisivikelo esiyinhloko se-transformer, esingabonisa ngokuphumelelayo iphutha langaphakathi le-transformer. I-relay yegesi ekhanyayo yenziwe inkomishi evuliwe, ukuthintana komhlanga owomile, njll., futhi isebenza kusignali. Ukudluliselwa kwegesi esindayo kwenziwa ngama-baffles, iziphethu, okuxhunywana nawo ngomhlanga, njll., asebenza lapho ekhubeka.
Ngesikhathi sokusebenza okuvamile, i-gas relay igcwaliswa ngamafutha, inkomishi evulekile icwiliswa emafutheni, isendaweni yokuntanta, futhi okuthintana nomhlanga kuyanqanyulwa. Lapho iphutha langaphakathi le-transformer lenzeka, ukushisa kwendawo kwenzeka endaweni yephutha, okubangela ukwanda kwamafutha e-transformer eseduze, futhi umoya oncibilikisiwe emafutheni uyaxoshwa, wenze ama-bubbles nokukhuphuka. Lapho iphutha lilincane, igesi ekhishwayo ikhuphuka kancane futhi ingene esikhungweni segesi, okwenza izinga likawoyela lehle. I-fulcrum ekhiqizwe inkomishi evulekile iwukuzungezisa okuphambene newashi kwe-shaft, okwenza okuthinta umhlanga kuxhumeke futhi kuthumele isignali.
Uma ukwehluleka kwangaphakathi kwe-transformer kubi kakhulu, igesi yegesi enamandla ikhiqizwa, okwenza ukucindezela kwangaphakathi kwe-transformer kwande ngokuzumayo, futhi ukugeleza okukhulu kwamafutha kuthinta isiqondiso somcamelo wamafutha. Ngenxa yokuthi ukugeleza kukawoyela kuhlasela isiphithiphithi, i-baffle inqoba ukumelana kwentwasahlobo futhi iqhubekisela uzibuthe ukuba wome. Isiqondiso sokuthinta umhlanga siyanyakaza, ukuze ukuthintana komhlanga kuvulwe futhi kusebenze ohambweni.
Isici sokudlulisa i-relay sibhekisela ebudlelwaneni phakathi kwenani lokokufaka kanye nenani eliphumayo le-relay kuyo yonke inqubo eshintshayo. Kungakhathaliseki ukuthi isenzo noma ukubuya, i-relay isuka endaweni yokuqala kuya endaweni yokugcina, akunakwenzeka ukuhlala endaweni ethile ephakathi. Lesi sici sibizwa ngokuthi isici esidluliswayo se-relay.
CONTACT E-US
Thatha ithuba lolwazi lwethu nolwazi olungenakuqhathaniswa, sikunikeza isevisi engcono kakhulu yokwenza ngokwezifiso.
.
SHIYA UMLAYEZO
Sicela ugcwalise futhi uthumele ifomu elingezansi, sizokuthinta emahoreni angama-48, ngiyabonga!
REKUNCONYWA
Wonke akhiqizwa ngokuvumelana nezindinganiso zamazwe ngamazwe eziqinile. Imikhiqizo yethu ithole umusa kuzo zombili izimakethe zasekhaya nezangaphandle.
