Ntchito ya High Voltage Circuit Breaker

Circuit breaker ndi chipangizo chamagetsi mumagetsi, chomwe chimatha kulumikizidwa chokha pamene chingwe kapena malo ocheperako ndi afupiafupi kapena odzaza kuti ateteze zida zamagetsi ndi chitetezo chamunthu.
High voltage circuit breakermakamaka amapangidwa ndi arc kuzimitsa dongosolo, kusokoneza dongosolo, chipangizo chowongolera ndi chinthu chowunikira.
Ngati chosinthira sichingathe kulumikizidwa munthawi yake, chipangizo chamagetsi kapena chigawo chamagetsi chimadula cholakwacho kuti chiteteze chitetezo chamunthu ndi zida.

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Ine, Arc kuzimitsa dongosolo
Dongosolo lozimitsa la arc la high voltage circuit breaker limaphatikizapo chipangizo chopangira ma arc, chipangizo chozimitsira arc ndi chipinda chozimira cha arc.
Mumagetsi otsika kwambiri, nthawi zambiri amagwiritsa ntchito chosokoneza mpweya kuti azimitsa arc, chifukwa chosokoneza mpweya sichikhala ndi magetsi, choncho sangakhale ndi arc yopangira.
Mumagetsi apamwamba kwambiri, kuzimitsa kwa vacuum arc nthawi zambiri kumagwiritsidwa ntchito, pogwiritsa ntchito matenthedwe ndi mphamvu yamagetsi yamagetsi yapano muchipinda chozimitsa cha vacuum arc.
M'mabwalo a HVDC, kuzimitsa kwa arc nthawi zambiri kumachitika ndi mawotchi otulutsa chifukwa cha DC yayikulu komanso kuphulika kosavuta kwa arc.
Chifukwa cha kuchuluka kwakukulu kwamagetsi othamanga kwambiri, chipinda chozimira cha air arc chimagwiritsidwa ntchito kwambiri.
II, Dongosolo losokoneza
Wothyola wa high voltage circuit breaker makamaka amaphatikiza ma electromagnet, electromagnetic coil, etc.
Ntchito ya maginito amagetsi ndikupanga mphamvu ya maginito yomwe imakanikiza arc motsutsana ndi goli.
Ntchito ya coil ya electromagnetic ndikutumiza chizindikiro cha pulse pomwe chosinthira chayatsidwa kapena kuzimitsidwa kwa wowongolera, ndipo wowongolera amamaliza ntchito yodula poyang'anira koyilo yamagetsi kuti iyatse kapena kuzimitsa.
Ma electromagnetic coil amagwiranso ntchito ngati electromagnetic kudzipatula.
Goli limayikidwa pa chophwanyira dera, zomwe zimapangitsa kuti magetsi a arc apange mphamvu ya maginito pa goli, yomwe imaperekedwa ndi zida ziwiri zozungulira, zomwe zimalepheretsa kuti arc isatengedwe ndi goli ndikuyambitsa ngozi.
III, Control zipangizo
Ophwanya ma circuit nthawi zambiri amatenga zida zowongolera zapadera, monga ma microcomputer circuit breakers (zipangizo zoteteza ma microcomputer), zokhala ndi ntchito zowongolera ndi zoteteza.
Ntchito ya chipangizo choteteza ma microcomputer ndikupanga ma voliyumu kapena chizindikiro chaposachedwa pozungulira pakakhala vuto, kenako ndikuchisintha kukhala chizindikiro chamagetsi kapena chizindikiro cha pulse kudzera mudera lokulitsa, ndikuzindikira ntchito ya ophwanya dera kudzera pa relay kapena zinthu zina zowongolera ( monga reactor, isolator, etc.).
Kuphatikiza apo, pali zosinthira zamakina zomwe zimagwiritsidwa ntchito posinthira zosintha zokha, monga SCR, SCR rectifier diode, etc.
Pofuna kupititsa patsogolo kudalirika ndi chitetezo, zida zotetezera ma microcomputer nthawi zambiri zimagwiritsa ntchito zida zotulutsa analogi kuti zipereke ntchito zambiri zotetezera, monga analogi input/output (AFD), voltage/current combination (AVR) kapena sampling transformer voltage panopa.
IV, Kuwunika zigawo
Wowononga dera amakhala ndi zida zowunikira zodziwikiratu, zomwe zimagwiritsidwa ntchito kwambiri kuti zizindikire zachilendo pakuphwanya kwamagetsi.
Common high-voltage circuit breakers ndi SF6, SF7, vacuum ndi mitundu ina, malinga ndi mitundu yosiyanasiyana akhoza kugawidwa mu voteji 1000V, 1100V ndi 2000V.
Ndi chitukuko cha sayansi ndi ukadaulo, ma HV circuit breakers amasinthidwa pafupipafupi.Pakali pano, SF6 circuit breaker ndi SF7 circuit breaker amagwiritsidwa ntchito kwambiri m'dziko lathu.
V, Zofunikira pakuyika ndi kusamala kwa ophwanya ma voltages apamwamba
Mukayika chowotcha chamagetsi apamwamba, chidwi chidzaperekedwa kutalika kwa malo oyikapo komanso mtunda;njira yolumikizirana yolumikizirana idzasankhidwa pa chowotcha chozungulira molingana ndi mulingo wamagetsi ndi mulingo wanthawi yayitali.
Kuti mupewe zovuta monga matenthedwe amafuta ndi mphamvu yamagetsi pakanthawi kochepa kameneka kachitika, ziyenera kuzindikirika kuti malo oyika chophwanyira dera azikhala kutali kwambiri ndi malo onyamula katundu;pakukhazikitsa, zidzatsimikizirika kuti chowotcha chamagetsi chapamwamba chikhoza kuyimbidwa mosavuta kuchokera ku chipangizo chogawa magetsi, ndipo makina ogwiritsira ntchito ophwanya dera azikhala ndi malo okwanira kuyenda;ndi malo ogwiritsira ntchito makina oyendetsa dera adzakhala osavuta kulekanitsa mphamvu yogwira ntchito kuchokera kumagetsi ogwira ntchito.