A chosokoneza derandi chipangizo chamagetsi chomwe chimagwiritsidwa ntchito kwambiri m'ma AC circuits. Mtundu wa utility nthawi zambiri umapangidwa ndi cholumikizira chosunthika, cholumikizira chosunthika ndi cholumikizira chosasinthasintha. Mu dera, mtundu wa utility ukhoza kudula magetsi, kulumikiza magetsi ndikuteteza zida zamagetsi. Malinga ndi kapangidwe kake ndi mfundo yogwirira ntchito, ukhoza kugawidwa m'magulu awiri:chosokoneza dera cha gawo limodzi, chosokoneza ma circuit cha magawo atatu ndichoswa dera la mpweya. Circuit breaker, monga chipangizo chosokoneza pakati pa control circuit ndi magetsi, imagwira ntchito yofunika kwambiri pa gridi yamagetsi. Pamene circuit yodzaza kwambiri, short circuit ndi zolakwika zina, chitetezo cha magetsi chidzadulidwa nthawi yake, kotero kuti circuityo idzatsegulidwa kuti iteteze chitetezo cha anthu ndi katundu ndi zida zina kuti zisawonongeke. Chifukwa chakechosokoneza deraChogwiritsidwa ntchito kwambiri mu dongosolo lamagetsi chimatchedwanso "choteteza mphamvu zambiri" kapena "fuse". Chimodzi mwa ntchito zofunika kwambiri ndikuzimitsa magetsi okha ngati pali short circuit.
Mfundo yogwirira ntchito
Pamene AC ikupita kudzera mu chophwanya dera ikalumikizana, mphamvu yamagetsi imakoka, zomwe zimapangitsa kuti makina ogwirira ntchito azigwira ntchito, zomwe zimapangitsa kuti chophwanya dera chitulutse zinthu zokhumudwitsa, zomwe zimapangitsa kuti dera liziduladula.
Mwachizolowezi, chipangizo chochedwetsa ntchito chikhoza kuwonjezeredwa kuti dera lithe kuchotsedwa pokhapokha ngati ntchito yosinthira yatha mkati mwa nthawi yomwe yaperekedwa.
Pamene mphamvu yamagetsi yochepa ikadutsa mu chosokoneza magetsi, chitsulo chomwe chili pafupi ndi cholumikiziracho chimasungunuka ndikuchotsedwa ndi kutentha komwe kumatuluka chifukwa cha mphamvu ya arc kinetic ndi kutentha kwakukulu komwe kumapangidwa ndi kusungunuka kwa cholumikiziracho, motero chimadula mphamvu yamagetsi.
Pamene chosinthira magetsi chatsekedwa kapena dera lolumikizidwa nalo lalephera, chosinthira magetsi chimatha kuswa dera m'kanthawi kochepa.
Malinga ndi kapangidwe kake, kapangidwe kake kagawika m'magulu atatu okhazikika, oyenda ndi opachikidwa.
Malinga ndi njira yotulutsira, njira yotulutsira imagawidwa m'magulu awiri: yamanja ndi yamagetsi.
Malinga ndi njira yogwirira ntchito, mitundu iwiri ya ma transmission a lamba ndi yopanda ma transmission a lamba ndi yosiyana;
Kugawa
(1)Zosokoneza deraZingagawidwe m'magulu monga chipinda chosokoneza mpweya (VHV), chipata chosokoneza mpweya (AVR), chotulutsa mpweya (VSD) ndi cholumikizira mpweya (vacuum contactor) malinga ndi njira yolumikizira mpweya (arc interrupter medium).
(2) Zothyola ma circuit zitha kugawidwa m'mitundu itatu: chothyola ma circuit cha gawo limodzi, chothyola ma circuit cha magawo atatu ndi chothyola ma air circuit.
(3) Ma air circuit breakers amatha kugawidwa m'mitundu iwiri, AC ndi DC, malinga ndi ogwiritsa ntchito komanso malo osiyanasiyana ogwiritsira ntchito.
(4) Chotsekera ma circuit chingaphatikizidwe ndi air capacitor bank, air inductor ndi zida zina zamagetsi malinga ndi njira yokhazikitsira, ndipo chingagwiritsidwe ntchito ngati chipangizo chamagetsi choteteza.
(5) Amagawidwa m'magulu a chitetezo champhamvu kwambiri, chitetezo chafupifupi komanso chitetezo champhamvu kwambiri malinga ndi mawonekedwe awo oteteza.
(6) Pali magetsi a mpweya a 100V series general-purpose ndi current grades malinga ndi magetsi awo ovoteledwa ndi current values.
Gawo lofotokozera
Mtundu wa chotsegula mawaya umafanana ndi wa zipangizo zina zamagetsi, monga khodi yokhala ndi zilembo "P", "Y" ndi manambala a ma switch ogawa, ndi khodi yokhala ndi chilembo "C" ndi manambala a ma switch a mpeni, ndi zina zotero, koma ntchito ndi kapangidwe kake n'zosiyana ndipo nthawi zambiri sizingagwiritsidwe ntchito pazinthu zambiri. Mwachitsanzo, tengani ZF6 ndi ZF14.
2) Voliyumu yoyesedwa: imatanthauza mtengo woyesedwa womwe chopasula dera chingathe kupirira pansi pa ma frequency oyesedwa (50Hz) ndi ma frequency oyesedwa (25Hz).
3) Mphamvu yoyesedwa: ikutanthauza mphamvu yogwira ntchito yayikulu kwambiri yomwe chopasula dera chingathe kupirira pansi pa mikhalidwe inayake.
4. "Kutha kusweka" kumatanthauza kuti chosweka mawaya chimatha kutseka AC 50Hz kapena DC 1000V kapena pansi pake modalirika malinga ndi zomwe zalembedwa, ndipo nthawi yosweka siyenera kupitirira 5ms.
5) Makhalidwe a magwiridwe antchito
Mfundo yosankha
1, Yogawidwa m'magulu:
(1) Ma circuit breaker a gawo limodzi ndi omwe amagwiritsidwa ntchito kuteteza ma circuit, ma mota ndi zida zina zamagetsi. Circuit breaker ili ndi ubwino woti siigwira ntchito nthawi zambiri komanso yosavuta, koma imafunika kudula magetsi nthawi yomwe chingwe ndi mota zili ndi magetsi ambiri kapena zofupikitsidwa kuti ngozi isakule. Chifukwa chake, circuit breaker iyenera kukwaniritsa zofunikira zodula magetsi mkati mwa nthawi yoikika, yokhala ndi nthawi yochepa yopuma, kusankha bwino ndi zina zotero.
(2) Mawu akuti "chotsekereza magetsi cha AC cha magawo atatu" amatanthauza chotsekereza magetsi chomwe chimagwiritsidwa ntchito m'mabwalo oteteza ndi owongolera magalimoto, chomwe chimagwira ntchito yofanana ndi chotsekereza magetsi cha gawo limodzi, koma chawonjezera chosinthira cholumikizira mkati mwa chipangizo chamagetsi kuti chikwaniritse zofunikira zoteteza ma mota ndi mabwalo owongolera m'mabwalo a AC. Kuphatikiza apo, chilinso ndi chotsekereza magetsi chochulukirapo, chotsekereza magetsi chocheperako komanso chotsekereza magetsi chocheperako.
Nthawi yotumizira: Feb-17-2023