Ma Transformers Apadera a HVDC Flex: Kuyambitsa Mphamvu Yamphepo Yapamtunda Yakutali

Chiyambi

Pamene malo operekera mphepo m'mphepete mwa nyanja akuyenda kutali ndi gombe—kupitirira makilomita 100 kupita m'madzi akuya—kutumiza kwa AC kwachikhalidwe kumafika pamalire ake aukadaulo. Zingwe za pansi pamadzi zimagwira ntchito ngati ma capacitor akuluakulu, zimadya mphamvu yogwira ntchito komanso zimapangitsa kuti kutumiza mphamvu moyenera kukhale kosatheka pa mtunda wautali. Apa ndi pomwe ukadaulo wotumizira mphamvu yamagetsi yamphamvu (HVDC) umakhala wofunikira, ndipo pamodzi nawo, gulu latsopano la ma transformer apadera.

Nkhaniyi ikufotokoza za udindo wa ma transformer awa pa kutumiza mphamvu ya mphepo kunyanja ndi zofunikira zaukadaulo zomwe zimawasiyanitsa ndi mayunitsi wamba.

Gawo Loyamba: N’chifukwa Chiyani HVDC Iyenera Kusinthasintha Kuti Igwire Ntchito Mphepo Yakuzama?

Vuto la Capacitance.Mphamvu ya AC ikadutsa m'zingwe za pansi pamadzi, chingwecho chimagwira ntchito ngati capacitor. Kupitirira makilomita pafupifupi 70, mphamvu yogwira ntchito yomwe imagwiritsidwa ntchito ndi chingwecho imakhala yayikulu kwambiri kotero kuti mphamvu yochepa yogwira ntchito imafika kugombe. Kutumiza kwa HVDC kumathetsa vutoli—mphamvu yolunjika siimapanga mphamvu yogwira ntchito, zomwe zimapangitsa kuti kutumiza kuyende bwino pamtunda wa makilomita mazana ambiri.

Ubwino Wosinthasintha wa DC.Mosiyana ndi HVDC yachikhalidwe, yomwe imadalira chithandizo chokhazikika cha AC grid, HVDC flexible (kapena "HVDC Flex") imagwiritsa ntchito ma voltage-source converters omwe amatha kuwongolera mphamvu yogwira ntchito komanso yogwira ntchito payokha. Izi zimapangitsa kuti ikhale yoyenera kulumikiza magwero osinthika osinthika monga mphepo yamkuntho ya m'mphepete mwa nyanja, yomwe ilibe mphamvu yozungulira ya magetsi wamba.

Gawo Lachiwiri: Ma Transformers Apadera Amafunika

Makina a HVDC Flex amafuna mitundu ingapo ya ma transformer apadera, ndipo iliyonse ikukumana ndi mavuto apadera.

Ma Transformer Osinthira.Izi zimalumikiza netiweki yosonkhanitsira AC ku mavavu osinthira magetsi a DC. Pa ntchito zakuya m'nyanja, ziyenera kuthana ndi kupsinjika kwa AC ndi DC nthawi imodzi—vuto lomwe limapangitsa kuti pakhale kufunikira kwakukulu pamakina otetezera magetsi. Kuchuluka kwa magetsi kukukwera pang'onopang'ono; mapulojekiti aposachedwa afika ±500 kV, zomwe zimafuna ma transformer omwe amatha kupirira magetsi a AC ndi DC ophatikizana.

Zosinthira za Pulatifomu Zakunja.Magawowa, omwe amaikidwa pa nsanja za m'mphepete mwa nyanja, ayenera kupirira nyengo zovuta kwambiri zachilengedwe: dzimbiri la mchere, chinyezi chambiri, kugwedezeka ndi mphamvu ya mafunde, ndi malo otsekeka. Kuyesa kwa mchere kwa ma transformer a m'mphepete mwa nyanja nthawi zambiri kumafuna maola 1,440—kuwirikiza kawiri kapena katatu nthawi ya zida wamba.

Zofunikira Zopangira Kapangidwe Kopepuka.Kulemera kulikonse pa nsanja yakunja kwa nyanja kumawonjezera ndalama zambiri ku maziko ndi zombo zoyikira. Mainjiniya amatsatira mapangidwe ang'onoang'ono komanso opepuka popanda kusokoneza kudalirika. Zatsopano zaposachedwa zikuphatikizapo makina oziziritsira okonzedwa bwino komanso zipangizo zamakono zotetezera kutentha zomwe zimachepetsa kukula kwa transformer pamene zikugwira ntchito bwino.

Gawo Lachitatu: Mavuto a Zaukadaulo

Kugwirizana kwa Kuteteza.Kuphatikiza kwa ma voltage a AC ndi DC mu ma transformer osinthira kumapanga magawidwe ovuta amagetsi. Ma charge a malo amatha kusonkhana muzinthu zotetezera kutentha pansi pa mphamvu ya DC, zomwe zingayambitse kutulutsa pang'ono ndi kulephera. Kupanga zitsanzo zapamwamba pogwiritsa ntchito kusanthula kwa zinthu zocheperako kumathandiza mainjiniya kupanga makina otetezera kutentha omwe amasamalira zotsatirazi.

Kulimba kwa Makina.Ma transformer a m'nyanja ayenera kupulumuka kunyamulidwa ndi nyanja, kuyikidwa m'malo ovuta, komanso kugwedezeka kosalekeza kwa zaka zambiri. Mapangidwe a matanki olimba, makina omangira bwino, komanso kusankha mosamala zinthu zomwe zimagwiritsidwa ntchito kumatsimikizira kuti makinawo ndi olimba nthawi yonse ya moyo wa katunduyo.

Kuziziritsa M'malo Otsekedwa.Mapulatifomu a m'mphepete mwa nyanja amapereka malo ochepa oti zipangizo zoziziritsira zigwiritsidwe ntchito. Opanga mapulogalamu amakonza bwino momwe kutentha kumagwirira ntchito pogwiritsa ntchito njira zamakono zoyendetsera madzi, zomwe zimathandiza kuti ma transformer azitha kugwira ntchito mokwanira ngakhale m'malo otentha komanso otsekedwa.

Gawo Lachinayi: Ntchito Yofunika Kwambiri

Pulojekiti ya mphepo ya ku Guangdong Yangjiang Sanshan Island ikuyimira kupita patsogolo kwakukulu pankhaniyi. Ili pamtunda wa makilomita oposa 100 kuchokera kugombe la China, polojekitiyi ipereka mphamvu yoyera yokwana 2,000 MW ku Guangdong-Hong Kong-Macao Greater Bay Area, yothandiza mabanja pafupifupi 2.4 miliyoni.

Pakati pawo pali ma transformer a DC osinthasintha a ±500 kV—mayunitsi akuluakulu aliwonse olemera matani 380, ofanana ndi magalimoto 200 onyamula anthu. Ma transformer awa amawonjezera mphamvu kuchokera pa 66 kV kufika pa 500 kV AC asanasinthe kukhala DC kuti apereke mphamvu. Ntchitoyi idatenga zaka zoposa khumi za kafukufuku ndi chitukuko, kuthana ndi mavuto okhudzana ndi kukana kupopera mchere, kapangidwe ka zivomerezi, komanso kukonza malo.

Gawo Lachisanu: Malangizo a M'tsogolo

Pamene mphepo ya m'mphepete mwa nyanja ikukula m'madzi akuya kwambiri, mphamvu yamagetsi ikupitirira kukwera. Mapulani amakampani akuwonetsa ma voltage a 525 kV ndi DC okwera kwambiri, zomwe zimafuna ma transformer okhala ndi mphamvu zambiri zotetezera kutentha komanso mphamvu zambiri.

Ntchito zokhazikitsa miyezo ikupita patsogolo. Miyezo yapadziko lonse lapansi monga IEC 60076-16 imayang'ana makamaka ma transformer ogwiritsira ntchito ma turbine amphepo, kupereka chitsogozo pa mayeso ndi zofunikira pakukhazikitsa kwa madera akutali.

Mapeto

Ma transformer apadera a HVDC Flex akuthandizira kufalikira kwa mphepo ya m'mphepete mwa nyanja kupita m'madzi akuya komwe kutumiza kwa AC sikukugwira ntchito. Kuphatikiza zofunikira zamagetsi kwambiri ndi nyengo zovuta zachilengedwe, mayunitsi awa akuyimira luso lapamwamba la uinjiniya wa transformer.

Kwa akatswiri ogula zinthu, kumvetsetsa zosowa zapadera za ntchito za HVDC zakunja kumathandiza kulongosola zida zoyenera ndikuwunika momwe ogulitsa amagwirira ntchito. Pamene mphamvu zongowonjezwdwanso zikupitiliza kukula padziko lonse lapansi, ma transformer apaderawa adzakhalabe zigawo zofunika kwambiri pa zomangamanga za mphamvu zoyera.