High voltage circuit breakeramatanthauza dera akhoza kulumikizidwa, kuchotsedwa ndi kutembenuzidwa ku zipangizo zamagetsi.Kutengera ngati pali pakali pano muderali, chowotcha cha HV chimagawidwa kukhala chosinthira chonyamula komanso chosanyamula katundu.Zili ndi ntchito yowonjezereka ya arc ndipo imatha kuzimitsa kapena kuzimitsa chitetezo champhamvu kwambiri komanso chamakono mu dongosolo lamagetsi mkati mwa nthawi yoikidwiratu.Kwa ma gridi okhala ndi mphamvu ya 500 kV kapena kupitilira apo, kugwira ntchito pafupipafupi kumafunikanso kuti zitsimikizire kusinthasintha kokwanira komanso kukhazikika kwadongosolo.
Makhalidwe amachitidwe
1, Wowononga dera ali ndi ntchito zachitetezo champhamvu kwambiri komanso chitetezo chachifupi, ndipo angagwiritsidwe ntchito poteteza ndi kuwongolera mizere, zida zogawa ndi katundu.
2, Wowononga dera ali ndi ntchito yozimitsa arc, ndipo amatha kudula arc mwachangu komanso modalirika mkati mwa 10 ms.
3, Wowononga dera ali ndi mawonekedwe a nthawi yochepa yotsegula ndi kutseka, ndipo ndi yoyenera malo ogwirira ntchito pafupipafupi.
4, Wowononga dera amatha kuzindikira ntchito yogawanitsa yopanda katundu, yomwe imathandizira kugwira ntchito pafupipafupi ndikufupikitsa nthawi yamagetsi.
5, Ndizosamalitsa m'moyo wonse;panthawi yozimitsa, nthawi yopanda kuwotcherera kwa kusuntha ndi static contacts ndipo palibe mphamvu yamagetsi pa coil yotseka ya circuit breaker ndi yaifupi, zomwe zimatsimikizira kuti wophwanya dera sangapse.
6, Iwo ali ndi makhalidwe a voliyumu yaing'ono ndi kulemera kuwala.
7, Vacuum arc kuzimitsira chipinda adzakhala anatengera ndi arc kuzimitsira chipangizo chozimitsira adzakhala ntchito m'malo mwa Buku ntchito limagwirira;chipinda chozimira cha arc chizikhala chodalirika, chophatikizika pamapangidwe komanso chaching'ono pakuyika.
Mfundo ya ntchito
Pamene wosweka dera ali ndi mphamvu, kukhudzana kosuntha mu makina kumayendetsa kasupe wotseka kudzera mu njira yotumizira kuti atseke chophwanyika.Kumayambiriro kwa masika kumapangitsa kuti wophwanyayo atseke.
Pamene wosweka dera wathyoledwa, osuntha osuntha ndi osasunthika amalekanitsidwa, ndipo osuntha oyenda mu makinawo amakonzedwanso poyamba, ndiyeno dera limadulidwa poyendetsa ndodo zogawanika ndi kutseka zolumikizira pansi pa mphamvu ya masika.Malo okhudzana ndi kusuntha ndi kukhudzana kosasunthika kumayendetsedwa ndi makina osungira mphamvu a kasupe kuti agwirizane ndi malo enaake.
Kuonjezera apo, pali zina zowonjezera monga kusintha kwa latching, ndi zina zotero, zomwe zimapangitsa kuti wodutsa dera azikhala ndi malo enaake panthawi yosweka ndi kutseka, kuti ateteze kugawanika ndi kusokonezeka.
Kapangidwe kakhalidwe
1. Wowononga dera amapangidwa ndi chipolopolo, gulu lothandizira, chipinda chozimitsa cha arc, chozimitsa cha arc, chothandizira chothandizira ndi njira yogwiritsira ntchito.Chifukwa chipinda cholumikizirana ndi chosokoneza cha chophwanyira dera chimalekanitsidwa ndikuphatikizidwa ndi mphamvu yamagetsi, mawonekedwe olumikizana nawo amakhala ndi chikoka chachikulu pakuchita kwa wophwanya dera.
2. Zowononga ma circuit zidzagawidwa m'ma air insulated circuit breakers ndi vacuum arc interrupters malinga ndi ma arc interrupting media, ndikugawidwa mu mtundu wa kusintha kwa katundu ndi mtundu wa vacuum arc interrupter malinga ndi zochitika zosiyanasiyana.
3. Kuti athe kupatukana kodalirika ndi kuphatikiza pakati pa gulu lolumikizana ndi gulu lolumikizana, njira yochepetsera malo imakonzedwa mu gulu lolumikizana.Malo osinthira amayendetsedwa ndi chogwirira cha malire.Ophwanya osiyanasiyana ali ndi malire osiyanasiyana, koma onse ali ndi ntchito zofananira.
Gulu
1, Malinga ndi momwe amagwirira ntchito ophwanya ma circuit, pali mitundu iwiri ya ophwanya: on-load breaker and no-load breaker.
2, Zowononga dera zimatha kugawidwa m'magulu owononga mafuta, chopukutira dera ndi sulfure hexafluoride wophwanya dera malinga ndi sing'anga yozimitsa arc.
3, Malinga ndi mfundo ya kuzimitsa kwa arc, pali mitundu iwiri ya arc kuzimitsa, imodzi ndi arc kuzimitsa popanda arc, ina ndi arc kuzimitsa popanda arc.Chifukwa palibe arc circuit breaker potseka, chifukwa cha mphamvu yamagetsi, ndizosatheka kukwaniritsa kutha kwathunthu.
Yoyamba imagwiritsa ntchito mpweya ngati insulating sing'anga ndipo yotsirizira imagwiritsa ntchito sulfur hexafluoride ngati insulating medium.
5, Malinga ndi gulu la ntchito zoteteza, zitha kugawidwa muchitetezo chachifupi chachifupi komanso chitetezo chanthawi yayitali.
Nthawi yotumiza: Feb-20-2023