Iyini i-Electric Switchgear? Izingxenye, Izinhlobo kanye Nemisebenzi
I-switchgear kagesi iyinhlangano yokushintsha, ukuvikela, ukulawula kanye nemishini yokuhlukanisa esetshenziselwa ukuphatha amasekhethi kagesi. Ngokuya ngomklamo, ingase iqukathe ama-circuit breaker, amaswishi, izinqamuli, amabhasi, ama-relay avikelayo, iziguquli zezinsimbi namadivayisi okulinganisa. Inhloso yayo akukhona nje ukusabalalisa amandla: iphinde isize ukusula amaphutha kagesi, ukulawula iziphakeli nokusungula ukuhlukaniswa okudingekayo ekunakekeleni. Ukuhlelwa okuqondile kuyahlukahluka ngesigaba se-voltage, ukufakwa, uhlelo lokuvikela kanye namazinga asebenzayo.
Kunoma ubani obuzayo yini i-switchgear kagesi, kusiza ukuhlukanisa imisebenzi yesistimu nekhabhinethi ebonakalayo. I-circuit breaker iyingxenye eyodwa; umhlangano we-switchgear uhlanganisa izingxenye ezimbalwa ukuze unikeze ingxenye echaziwe yesistimu yamandla. I-JSGK yethula i-high-voltage switchgear, amakhabethe ane-voltage ephansi kanye namayunithi ayindandatho amakhulu ngaphakathi kwayo. ikhathalogi yemishini kagesi, ukunikeza abathengi bephrojekthi izindawo zokuqala zomkhiqizo womndeni esikhundleni sokucushwa kwendawo yonke.
Ingabe I-Electrical Switchgear Yenzani Ngempela?
I-Switchgear inemisebenzi emithathu ehlobene eduze: ukulawula, ukuvikela kanye nokuhlukaniswa. Umsebenzi ngamunye ungase usebenzise amadivaysi ahlukene, ngisho noma imisebenzi eminingana ihlanganiswe ohlwini olulodwa.
Ukulawula: Ukuvula, Ukuvala kanye Neziyingi Zomzila
Ukushintsha amadivayisi kuvumela opharetha noma amasistimu okulawula ukuthi avule futhi avale amasekhethi aqokiwe, kuncike ezilinganisweni zokusebenza kwawo. Izigaba ezingenayo, izibhangqwana zamabhasi neziphakeli eziphumayo zingahle zihlelwe ukuze zifane nomdwebo womugqa owodwa. Umshini oshintshayo ofanele ukulayisha okuvamile awukalwa ngokuzenzakalelayo ukuze uphazamise isekethe emfushane; imininingwane yemishini kufanele iveze umsebenzi wayo.
Ukuvikela: Ukuthola kanye Nokwesula Amaphutha
Imisebenzi yokuvikela ingase iphendule ku-overcurrent, short circuits, earth errors noma ezinye izimo ezichazwe ukwakheka kwesistimu. I-relay evikelayo ingahlola izilinganiso futhi iqalise uhambo, kuyilapho i-circuit breaker elinganiselwe ngokufanelekile iphazamisa umsinga wephutha. Amanye amadivayisi ane-voltage ephansi ahlanganisa ukuvikela nokuphazamiseka kuyunithi eyodwa. Akukhona ukuba khona kwe-relay noma ilebula ethi ‘vikelwe’ okufakazela ukuthi uhlelo oluphelele ludidiyelwe.
Ukuzihlukanisa: Ukusungula Umngcele Kagesi Ophephile
Ukuzihlukanisa kuhlukile ekuphazamiseni amandla. Isinqamuleli noma olunye uhlelo lokuhlukanisa luyakhethwa futhi lusetshenzwe ngokuya ngomsebenzi walo olinganiselwe kanye nezidingo zokufakwa. Ukunakekela kudinga izinqubo zokuphepha ezigunyaziwe zesayithi, ukuqinisekiswa kanye nezinhlinzeko ezifanele zesisekelo noma zomhlaba; isikhundla sokushintsha ikhabhinethi sisodwa akumele sithathwe njengobufakazi bokuthi umsebenzi ungaqala.
| Umsebenzi | Imishini ejwayelekile | Umthengi kufanele aqinisekise |
|---|---|---|
| Lawula | Ukushintsha, ama-breaker, othintana nabo noma izindlela zokusebenza | Uhlelo lwesifunda kanye nomsebenzi wokushintsha |
| Ukuvikelwa | Ama-relay, izinzwa, amayunithi ohambo oluvikelayo namadivayisi alinganiselwe aphazamisayo | Izinga lephutha, ukuxhumanisa kanye nemisebenzi edingekayo yokuvikela |
| Ukuzihlukanisa | Izinqamuleli, izinhlinzeko ze- earthing kanye nezixhumi lapho kuklanywe khona | Ukuhlelwa kokuhlukaniswa kanye nezidingo zokuphepha kwephrojekthi |
Yiziphi Izingxenye Ezingaphakathi Kwe-Switchgear?
Izingxenye ze-switchgear kagesi zincike ekutheni okokusebenza kuwumhlangano we-LV, umugqa ovalwe ngensimbi we-MV noma omunye umklamo. Okulandelayo yimisebenzi evamile, hhayi isimangalo sokuthi yonke ikhabethe iqukethe yonke into.
Ama-Circuit Breaker, Amaswishi kanye Nezixhumi
I-circuit breaker ikhethwa ukuthi iphathe futhi iphazamise ukusebenza ngaphansi kwezimo zayo ezishiwo. Amaswishi okulayisha kanye nezinqamuli zinezindima zazo zokushintsha noma zokuzihlukanisa, okungafanele kuthathwe ngokuthi ziyashintshana. Ukuhlelwa okuyiwona kanye nokusebenza okuxhumene kufanele kubuyekezwe kuhlelo lokugcina olugunyaziwe.
Amabhasi, Izixhumi kanye nezindawo zekhebula
Amabhasi enza izindlela zokuqondisa phakathi kwezinto ezingenayo neziphakeli eziphumayo. Umhlangano ungase ube nebhasi elikhulu, amabhasi ahlukaniswe ngokwezigaba, ukuxhunywa kwamagatsha kanye nezikhala zokunqanyulwa kwezintambo. Isilinganiso samanje, ukumelana kwesekethe emfishane, ukucaciswa kwe-insulation clearances kanye nokwakheka kwendawo ebiyelwe kuthinta ukuhlelwa okuphelele. Ukubukeka kwebhasi kukodwa akuqinisekisi ukusebenza kwayo okulinganiselwe.
Ukudluliselwa Okuvikelekile, Iziguquli Zensimbi nezilawuli
Ama-transformer amanje (CTs) kanye nama-voltage transformer (VTs), uma efakiwe, ahlinzeka ngamasignali okulinganisa amadivaysi okulinganisa nawokuvikela. Ama-relay avikelayo acubungula lokho okokufaka ngokuya ngezilungiselelo nokunengqondo; amamitha, amalambu ezinkomba, othintana nabo abasizayo kanye nokusebenza nokuqapha kwemishini yokuxhumana. Abathengi kufanele bahlukanise izici ezidingwa umdwebo womugqa owodwa kwezinye izesekeli zekhabhinethi ozikhethela zona.
| Isakhi | Indima eyinhloko | Umbuzo wokucaciswa |
|---|---|---|
| I-circuit breaker | Ukuphazamiseka kwemisinga elinganiselwe kanye namaphutha acacisiwe | Iyini i-voltage elinganiselwe, imisebenzi yamanje kanye ne-breaking? |
| Ibha yebhasi | Ukusabalalisa kwamanje phakathi kwamasekhethi | Ibhasi ihlelwa futhi ikalwe kanjani? |
| I-CT / VT | Izimpawu zokulinganisa | Yiziphi izilinganiso, amakilasi kanye nemithwalo edingekayo? |
| Ukudluliselwa kokuvikela | I-logic yokuvikela kanye namasignali ohambo | Yimiphi imisebenzi nokuxhumana okucacisiwe? |
| Izilawuli namamitha | Ukusebenza, isimo kanye nokuqapha | Yiziphi izinkomba kanye nokuxhumana okudingekayo? |
I-Low-, Medium- kanye ne-High-Voltge Switchgear Ayiwona Umkhiqizo ofanayo
I-Switchgear ihlanganisa umndeni wemiklamo kunekhabhinethi eyodwa yendawo yonke. Imishini yamandla aphansi ivamise ukuhlinzeka ngokwakhiwa komfula kanye nokusatshalaliswa kwezimboni. Ama-Medium-voltage avamile ahlinzeka ngokuphakelayo kwezimboni kanye namasekhethi okusabalalisa izinsiza. Ukufakwa kwamandla kagesi aphezulu kungabandakanya ukuvaleka okuhlukile, ukuphazamisa, ukwahlukanisa kanye nezinhlelo zesiteshi esincane. Imingcele ethize ye-LV/MV/HV namazinga okuhlola asebenzayo ancike endaweni yephrojekthi kanye nohlelo olujwayelekile; ithebula elilodwa lokunqamula umhlaba wonke lingadukisa.
I-JSGK high-voltage switchgear ikhasi lihlonza i-KYN, i-XGN kanye nemindeni yekhabhinethi ebiyelwe ngensimbi ehlobene ukuze yamukelwe, isatshalaliswe, ivikelwe, iqashwe futhi ikale. Yakho ama-switchgear ane-voltage ephansi kanye namakhabethe okusabalalisa ikhasi lihlinzeka ngomzila womkhiqizo ohlukile wamasistimu awela phansi. Lawo makhasi ahlonza imindeni yomkhiqizo, hhayi isithembiso sokuthi zonke izilinganiso noma izici zokuvikela ziyatholakala kukho konke ukulungiselelwa.
Imiklamo Engagqunywe komoya kanye Negesi
Ubuchwepheshe be-insulation kungenye inketho ezimele ekilasini le-voltage. I-switchgear egqunywe komoya isebenzisa umoya njengesisetshenziswa esiyinhloko sokwahlukanisa esakhiweni esifanele. Imishini efakwe igesi ifaka izingxenye endaweni elawulwayo yokuvikela igesi. Izindlela ezifakwe i-solid-insulated kanye ne-hybrid nazo zikhona; ukusebenza kwazo kuncike ekwakhiweni kwemishini kanye namazinga.
Indawo, umsebenzi kagesi olinganiselwe, ukufinyelela ekunakekeleni, izimo zemvelo kanye nezidingo zephrojekthi konke kuthinta ukukhetha. Akuwona umsindo ngokobuchwepheshe ukusho ukuthi i-GIS iphakeme kakhulu kune-AIS. Ngomndeni womkhiqizo ofanele, i-JSGK inikeza a indandatho eyinhloko kanye nekhabhinethi efakwe igesi ikhasi; Ingxenye yokugcina yokufaka izinto ezisetshenziswayo kanye nezici zekhabhinethi kufanele ziqinisekiswe yimininingwane yedatha yangempela.
I-Switchgear Ihlala Kuphi Ohlelweni Lokusabalalisa Amandla?
Umzila wokusabalalisa owenziwe lula ungase ube: ukunikezwa okungenayo → ukushintshwa nokuvikelwa kwe-HV ekhuphukayo noma i-MV → isiguquli lapho ukuguqulwa kwamandla kagesi kudingeke khona → i-LV switchgear → iziphakeli eziphumayo nemithwalo. Ama-topology wangempela ayahluka, futhi akuwona wonke ukufakwa okulandela lokhu kulandelana ngqo.
Isibonelo, isiteshi esingaphansi sohlobo lwebhokisi singahlanganisa ukuguqulwa kwamandla ngokushintsha kwamandla kagesi aphezulu naphansi kanye nemisebenzi yokusabalalisa ngaphakathi kwelungiselelo elihlanganisiwe. I-JSGK ibhokisi-uhlobo substation ikhasi lomkhiqizo libonisa lobu budlelwano besistimu. I-switchgear kanye nama-transformer enza imisebenzi ehlukene: i-transformer ishintsha amazinga kagesi; i-switchgear ilawula, ivikela futhi ihlukanise amasekhethi axhunywe kuyo.
I-Switchgear vs. Switchboard: Uyini Umehluko?
Womabili la magama achaza okokusebenza kokusabalalisa amandla, kodwa awashintshile ngaso sonke isikhathi. Emazingeni aseNyakatho Melika nokuthengwa kwempahla, ama-switchgear ane-low-voltage nama-switchboard angaba nokwakhiwa okuhlukile, idivayisi kanye nezidingo ezijwayelekile. Kwenye indawo, amatemu nokuhlukaniswa kwemishini kungase kulandele ukucaciswa okusekelwe ku-IEC noma kuzwelonke. Kunokuba ucabange ukuthi igama elisungula ukusebenza, qhathanisa izinga lomkhiqizo okuvunyelwene ngalo, izilinganiso zamaphutha, izinhlobo zedivayisi, ukuhlelwa kwegumbi, izimfuneko zokufinyelela nokunakekelwa.
Iphaneli ebhalwe ukuthi ‘switchgear’ akufanele yamukelwe ngegama layo kuphela. Abathengi kufanele baqinisekise ukuthi yini engaphakathi kumhlangano kanye nokuthi imiphi imisebenzi yokuhlola umklamo othunyelwe uhlanganisa ngempela.
Yini Okufanele Umthengi Ayicacise Ngaphambi Kokukhetha I-Switchgear?
Ukwazi incazelo eyisisekelo ye-switchgear kuyasiza, kodwa ikhotheshini yemishini kagesi enengqondo idinga incazelo yephrojekthi. Umthengi ngokuvamile kufanele alungiselele ulwazi olulandelayo ukuze lubuyekezwe ngobunjiniyela:
- I-voltage yesistimu yokulinganisa kanye nesigaba se-voltage esisebenzayo.
- Ilinganiswe ngamanani esekethe amanje nangenayo/ephumayo.
- Itholakala ileveli ye-short-circuit futhi edingekayo ukumelana noma ukuphulwa kwezilinganiso.
- Umdwebo womugqa owodwa, ukuhlelwa kwesigaba sebhasi kanye nohlelo lokuphakelayo.
- Izidingo zokuvikela, ukulinganisa, ukuhlanganisa kanye nokuxhumana.
- Ukufakwa kwangaphakathi noma ngaphandle, izimo ezizungezile kanye nesayithi.
- Ukungena kwekhebula, izixhumi ezibonakalayo nezimfuneko zendawo ebiyelwe.
- Izingqinamba zokufinyelela ekusebenzeni nasekulungiseni.
- Amazinga ephrojekthi asebenzayo kanye nezidingo zedokhumenti.
- Amanani ezinto zokusebenza kanye nezindawo zokusebenzela ezidingekayo.
Lokhu okokufaka kusiza ukuhlukanisa umbuzo ojwayelekile womkhiqizo womndeni kusukela ekucushweni kwekhabhinethi okugunyaziwe. I-JSGK icela izinga likagesi, izinga lamanje, lesifunda esifushane, ubuningi besifunda, imvelo nemidwebo ukuze kubuyekezwe iphrojekthi. Ukuze uqhubeke usuka kule ncazelo uye ekukhethweni kwemishini yangempela, xoxa ngezidingo zakho ze-switchgear ne-JSGK futhi unikeze ulwazi lwesistimu olufanele.
Kafushane, i-switchgear kagesi iyithuluzi lokushintsha elihlanganisiwe, ukuvikela kanye nemishini yokuhlukanisa. Izingxenye zayo, ukuhlelwa kwe-insulation nokusebenza okulinganiselwe kuyahlukahluka ngokuya ngesekethe namazinga wephrojekthi. Qala ngomsebenzi kanye nomdwebo womugqa owodwa, bese uhlola umndeni womkhiqizo othile kanye nokucushwa kobuchwepheshe okuqinisekisiwe.