PT ndi CT mu Transformers: Ngwazi Zosamveka za Voltage ndi Current

PT ndi CT mu Transformers: Ngwazi Zosamveka za Voltage ndi Current

Ponena za ma transformer,PT(Chosinthira ChothekerandiCT(Current Transformer) ali ngati awiriwa amphamvu padziko lonse la magetsi—Batman ndi Robin. Mwina sagwiritsa ntchito kuwala ngati transformer yokha, koma awiriwa amagwira ntchito kumbuyo kuti atsimikizire kuti chilichonse chikuyenda bwino komanso mosamala. Tiyeni tikambirane momwe amagwirira ntchito matsenga awo m'makonzedwe osiyanasiyana a transformer.

PT: Wonong'oneza wa Voltage

TheTransformer Yotheka (PT)ndiye munthu amene mumakonda kwambiri chifukwa chochepetsa mphamvu yamagetsi kufika pamlingo wosavuta kugwiritsa ntchito. Tangoganizirani kuti mukukumana ndi mphamvu yamagetsi ya 33 kV (kapena yokwera kwambiri) mu dongosolo lanu lamagetsi—yoopsa ndipo si chinthu chomwe mungafune kuyeza mwachindunji. Apa ndi pomwe PT imayambira. Imasintha mphamvu yamagetsi yokweza tsitsi kukhala chinthu chomwe ma meter ndi ma relay anu amatha kuchita popanda kutuluka thukuta, nthawi zambiri imatsika kufika pa 110 V kapena 120 V.

Ndiye, kodi PTs imagwira ntchito kuti?

• Ma transformer amphamvu kwambiri: Izi ndi mfuti zazikulu za gridi yamagetsi, zomwe zimagwira ntchito ya ma voltage kuyambira 110 kV mpaka 765 kV. Ma PT apa amaonetsetsa kuti mutha kuyang'anira ndikuyesa ma voltage mosamala kuchokera patali.
• Ma transformer a substation: Ma PT amagwira ntchito m'malo ocheperako kuti ayang'anire ndikuwongolera kuchuluka kwa magetsi asanaperekedwe kwa ogula m'mafakitale kapena m'nyumba.
• Chitetezo ndi ma transformer oyezera: Mu makina omwe kuwunika mphamvu yamagetsi ndikofunikira kwambiri pachitetezo ndi kulipira, ma PT amalowererapo kuti apereke mawerengedwe olondola a mphamvu yamagetsi m'zipinda zowongolera, zolumikizirana, ndi zida zotetezera.

PT ili ngati womasulira wodekha, wosonkhanitsidwa pamodzi pa konsati yamagetsi yokweza, akutenga mawu a 110 kV osweka m'makutu ndikuwasandutsa kukhala phokoso lofewa lomwe zida zanu zingathe kupirira.

CT: Woyang'anira Wamakono

Tsopano, tiyeni tikambirane zaChosinthira Chamakono (CT), mphunzitsi wa makina amagetsi. Pamene magetsi ayamba kusinthasintha minofu yake ndi ma amp ambiri akudutsa mu transformer yanu, CT imagwira ntchito kuti ichepetse mphamvu zake mpaka kufika pamlingo wabwino—nthawi zambiri pa 5 A kapena 1 A.

Mupeza ma CT akucheza mu:

• Chosinthira Chogawas: Anthuwa amagwira ntchito m'malo okhala anthu kapena amalonda, nthawi zambiri amayenda pamagetsi monga 11 kV mpaka 33 kV. Ma CT apa amatsimikizira kuyang'anira ndi kuteteza magetsi, ndikuwonetsetsa kuchuluka kwa madzi omwe akuyenda m'mizere.
• Zosinthira Mphamvu m'malo osinthira: Ma CT amawunika mphamvu yamagetsi pa malo osinthira magetsi amphamvu kwambiri pomwe ma transformer amatsitsa mphamvu yamagetsi kuchokera pamlingo wa ma transmission (monga 132 kV kapena kupitirira apo) kupita ku mulingo wa ma distribution. Ndi ofunikira kwambiri pozindikira zolakwika ndi zida zodzitetezera zisanawonongeke.
• Ma transformer a mafakitale: M'mafakitale kapena m'madera akuluakulu a mafakitale, ma transformer nthawi zambiri amanyamula katundu wolemera, ndipo ma CT amakhalapo kuti aziyang'anira mafunde akuluakulu. Ngati china chake chalakwika, CT imatumiza chidziwitsocho ku makina oteteza omwe amatseka zinthu zisanakanikidwe zida.

Ganizirani za CT ngati bouncer ku kilabu—imasunga mphamvu yamagetsi kuti isawononge chitetezo chanu, ndipo ngati zinthu zikuyenda movutikira, CT imaonetsetsa kuti wina afika pamalo oimikapo magalimoto mwadzidzidzi.

Chifukwa Chake PT ndi CT Ndi Zofunika

Pamodzi, PT ndi CT amapanga awiriawiri abwino kwambiri padziko lonse lapansi la transformer. Ndi chifukwa chake ogwiritsa ntchito amatha kuyang'anira ndikulamulira magwiridwe antchito a transformer popanda kuyandikira chilombocho (ndikhulupirireni, simukufuna kuyandikira mtundu wa magetsi ndi mphamvu yamagetsi popanda chitetezo chachikulu). Kaya ndichosinthira chogawam'dera lanu kapenachosinthira mphamvu champhamvu chamagetsi apamwambaMphamvu yotumizira magetsi m'mizinda yonse, ma PT ndi ma CT nthawi zonse amakhalapo, zomwe zimapangitsa kuti magetsi ndi magetsi azigwira ntchito bwino.

Chosangalatsa: Kuyang'anitsitsa mbali zonse ziwiri

Kodi mudayamba mwadzifunsapo chifukwa chake bilu yanu yamagetsi ndi yolondola chonchi? Mutha kuyamika ma CT ndi ma PT muma transformer oyezeraAmaonetsetsa kuti kampani yamagetsi ndi kasitomala akudziwa bwino kuchuluka kwa magetsi omwe akugwiritsidwa ntchito pochepetsa mphamvu yamagetsi ndikuyesa mphamvu yamagetsi ndi mphamvu yamagetsi. Chifukwa chake, inde, PT ndi CT zimasunga zinthu moyenera komanso molunjika mbali zonse ziwiri za gridi yamagetsi.

Mapeto

Kotero, kaya ndi transformer yayitali kwambiri kapena transformer yogwira ntchito mwakhama yogawa,PT ndi CTndi ngwazi zosaimbidwa zomwe zimasunga chilichonse chikuyenda bwino. Amaletsa magetsi amphamvu komanso mafunde akuluakulu kuti ogwiritsira ntchito, ma relay, ndi ma meter athe kuwagwira popanda suti ya ngwazi. Nthawi ina mukatsegula switch yamagetsi, kumbukirani—pali gulu lonse la oteteza magetsi omwe akuonetsetsa kuti magetsi ndi magetsi zikuyenda bwino.