Izinzuzo ze-Zinc Oxide Arresters ezine-Built-in Current Transformers

1). Izinkinga ngendabukoizibambi ze-zinc oxide.

1. Kukhona ingozi efihliwe yokuphepha emsebenzini
Okwamanje,izibambi ze-zinc oxidezifakwe kanye namadivayisi okuqapha, futhi isakhiwo sazo siboniswe esithombeni esingezansi.

Laphoisibambi se-zinc oxideUma isebenza, kuzokhiqizwa ingcindezi ethile esele ku-R1 kudivayisi yokuqapha. I-voltage eseleyo ekhiqizwa amadivayisi ahlukene okuqapha izohluka, kodwa ngokwemibandela ye-“AC Gapless Metal Oxide Lightning Arrester” (GB 11032), i-voltage eseleyo ingafinyelela ku-3kV. Ngamanye amazwi, i-terminal yokufaka yedivayisi yokuqapha izoba ne-voltage eseleyo efika ku-3kV lapho i-arrester isebenza. Le voltage eseleyo izofakwa phezu kwe-voltage eseleyo ngemva kokuba i-zinc oxide arrester isebenze, okwandisa inani le-voltage eseleyo iyonke ye-zinc oxide arrester, enomthelela omubi ekucindezeleni ngempumelelo i-overvoltage. Isibonelo,isibambi sombaniKwisiteshi esincane esine-voltage elinganisiwe engu-10kV, enomthamo wokukhipha ojwayelekile ongu-5kA, inani elijwayelekile le-voltage eseleyo yamanje we-lightning impulse ngu-27kV. Uma i-voltage eseleyo engu-3kV yedivayisi yokuqapha ibekwe ngaphezulu, i-voltage eseleyo iyonke ye-arrester izofinyelela ku-30kV, kanti i-voltage eseleyo izokhuphuka ngo-11.1%, okuzoshintsha kakhulu izici zokusebenza ze-arrester futhi kwenze buthaka umphumela we-arrester wokucindezela i-overvoltage.

Ukuze kube lula kubasebenzi bokusebenza ukuhlola nokurekhoda idatha,isibambi se-zinc oxideidivayisi yokuqapha ngokuvamile ifakwe endaweni engaba ngu-1.8m ukusuka phansi. Uma kukhona i-voltage ephezulu engu-3kV ekungeneni kwedivayisi yokuqapha, kuzoba nengozi enkulu yokuphepha ekuphepheni komuntu siqu komsebenzi.

2. Kunezingozi ezifihliwe ekuthembekeni kokusebenza

Ukuxhuma kwendabukoisibambi se-zinc oxidekanye nedivayisi yokuthola iboniswe kuMfanekiso 1 ngezansi. Phakathi kwazo, isisekelo sokuvikela, ucingo, kanye nedivayisi yokuqapha konke kuyimishini eyengeziwe yokuqaphela ukukalwa komsinga wokuvuza we-zinc oxide arrester ngaphansi kwe-voltage yokusebenza. Lawa madivayisi awadingeki ekusebenzeni okuvamile kwe-zinc oxide arrester uqobo. Ukwengezwa kwale mishini eyengeziwe kwandisa amathuba okuba neziphambeko zemishini. Kungakhathaliseki ukuthi iyiphi imishini enesiphambeko, kungabangela ukuthi i-arrester iyeke ukusebenza futhi kuthinte ukuzinza kokusebenza kwemishini. Isibonelo, emsebenzini wangempela, isisekelo sokuvikela sivame ukuba nezinkinga zomswakama, ukufudumala okungavamile noma umonakalo, okuzothinta ukusebenza nokuqapha kwe-arrester.

Ngokwezibalo eziku-inthanethi, phakathi kweziphambeko ezinkulu nezibucayi ze-zinc oxide arresters ngonyaka othile, kwakukhona iziphambeko ezingu-21 emzimbeni, ama-current okuvuza angajwayelekile angu-110, i-insulation yangaphandle engajwayelekile engu-13, isisekelo esingavamile esingu-1 (i-flange), ama-conductor angajwayelekile angu-8, kanye nezinkinga zomugqa wokukhipha amanzi eziyi-10. Idivayisi yokuqapha yayingajwayelekile izikhathi ezingu-183. Kungabonakala ukuthi imishini eyengeziwe izoba nomthelela omkhulu ekusebenzeni okuzinzile kwe-arrester. Olunye ulwazi lwezibalo lubonisa ukuthi iziphambeko ezingu-2,509 zenzeka kuma-light arrester angu-110 (66) kV nangaphezulu ngonyaka othile, lapho iziphambeko ze-arrester ngenxa yokulinganisa kwamanje okuvuza okungajwayelekile zaba ngu-31.79% wenani eliphelele leziphambeko, kanti iziphambeko zamadivayisi okuqapha zaba ngu-52.89%.