Ezweni lanamuhla eliqhutshwa ubuchwepheshe, lapho ugesi uwumgogodla wezimboni eziningi, ukudluliswa okuphephile nokusebenza kahle kwamandla kagesi aphezulu (HV) kubalulekile. Amasokhethi amakhebula kagesi aphezulu adlala indima ebalulekile ekuqinisekiseni ukudluliswa kwamandla kagesi okungenazihibe ukusuka endaweni eyodwa kuya kwenye. Ake sijule kancane encazelweni kanye nomsebenzi wamasokhethi amakhebula kagesi aphezulu.
Funda mayelana nezimpahla zekhebula le-voltage ephezulu:
Izithako zekhebula ezine-voltage ephezulu, eyaziwa nangokuthi izixhumi zekhebula lamandla kagesi aphezulu, zenzelwe ukuqinisekisa ukudluliswa okuphephile nokuthembekile kwamandla aphezulu phakathi kwezintambo nemishini. Asetshenziswa ukuxhuma izintambo zikagesi ophezulu emishinini eyahlukene njengama-transformer, ama-switchgear, ama-circuit breaker nezinye izinto zikagesi ezisebenza kumazinga aphezulu kagesi.
Ukubaluleka nezinzuzo:
1. Ukuphepha: Uma usebenzisa amandla kagesi aphezulu, ukuphepha yiyona nto ecatshangelwayo. Amasokhethi amakhebula kagesi aphezulu aklanywe ngendlela eqinile ukuze kuncishiswe ingozi yokushaqeka kukagesi, i-flashover namasekhethi amafushane. Banikeza ukuxhumana okuphephile nokuvikelekile, okunciphisa amathuba ezingozi nokulimala ngesikhathi sokufakwa noma ukulungiswa.
2. Ukusebenza kahle: Amasokhethi amakhebula kagesi aphezulu aklanyelwe ukunciphisa ukulahleka kwamandla ngesikhathi sokudlulisa. Ngoxhumo olunokumelana okuphansi, baqinisekisa ukudluliswa kwamandla okuhle kakhulu, ukwandisa ukusebenza kahle nokunciphisa ukuchithwa kwamandla.
3. Ukuguquguquka nokuguquguquka: Kunezinhlobo eziningi nemiklamo yamasokhethi amakhebula kagesi aphezulu ukuhlangabezana nezinhlelo zokusebenza ezahlukene. Kungakhathaliseki ukuthi izindawo ezingaphandle, ukufakwa ngaphansi komhlaba noma ukuxhunywa kwesiteshi esincane, kunesokhethi yekhebula elinamandla kagesi aphezulu ukuze kuhlangatshezwane nezidingo ezithile.
4. Ukuqina: Amasokhethi amakhebula kagesi aphezulu ayakwazi ukumelana nezimo zemvelo ezinzima ezihlanganisa ukushintshashintsha kwezinga lokushisa, umswakama kanye nokucindezeleka komshini. Azikwazi ukumelana nokugqwala futhi zenzelwe ukusetshenziswa isikhathi eside ezinhlelweni ezifunwa kakhulu, eziqinisekisa ukusebenza kwesikhathi eside nokwethembeka.
5. Ukufakwa okusheshayo nokulula: Isokhethi yekhebula lamandla kagesi aphezulu iklanyelwe ukufakwa nokususwa kalula, ukunciphisa isikhathi sokuphumula ngesikhathi sokulungiswa noma ukuthuthukiswa kwesistimu. Izici zayo ezisebenziseka kalula, njengama-insulators anekhodi enemibala, izindawo zokuxhuma ezimakwe ngokucacile nezinketho zokufaka ezingenamathuluzi, zenza inqubo yokufaka ibe lula.
Umsebenzi:
Amasokhethi amakhebula kagesi aphezulu aqinisekisa ukuqhubeka kukagesi nokuxhumana okuvikelekile ezinhlelweni zokusebenza zamandla kagesi aphezulu. Aqukethe izixhumi zabesilisa nabesifazane, ngayinye ene-insulation ethile kanye nezindlela zokuxhuma. Izixhumi zesilisa zivame ukuhlonywa izikhonkwane zensimbi noma amatheminali, kuyilapho izixhumi zesifazane zihlanganisa amasokhethi ahambisanayo noma imikhono.
Uma intambo kagesi ephezulu ixhunywe kusamukeli esifanele, izixhumi ziba umugqa bese zikhiyeleka endaweni ngokuphephile. Lokhu kuqinisekisa ukuxhumana okungangeni moya futhi okuvalekile, ukuvimbela ukuvuza, ukulahleka kwamandla kanye nokulimala.
Ekuphetheni:
Izimpahla zekhebula le-HVziyingxenye ebalulekile yezinhlelo zamandla kagesi aphezulu, eziqinisekisa ukudluliswa kwamandla ngendlela efanele kuyilapho kuqinisekisa ukuphepha. Ngokuhlala kwabo isikhathi eside, ukusebenza kahle kanye nokuguquguquka, badlala indima ebalulekile emikhakheni eyahlukene njengamandla, ingqalasizinda kanye nokukhiqiza.
Ukuqonda ukubaluleka nomsebenzi wamasokhethi amakhebula kagesi aphezulu kungasiza ochwepheshe benze izinqumo ezinolwazi lapho bekhetha futhi befaka lezi zingxenye. Ngokubeka phambili ukuphepha, ukusebenza kahle nokuqina, amasokhethi amakhebula kagesi aphezulu enza umnikelo obalulekile ekudluliselweni okuthembekile nokungaphazanyiswa kwamandla kagesi aphezulu.
Isikhathi sokuthumela: Jul-10-2023