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“Kwiminyaka engama-40 ukusukela ngo-1980, besiphantsi kolawulo lwangaphandle ixesha elide ngokwezixhobo eziphambili kunye nobuchwepheshe obuphambili beDC.ukuhanjiswa kwamandla.Namhlanje, ekugqibeleni siphumelele eli dabi lenguquko, sisebenzisa iintambo eziguquguqukayo ze-UHV ezenziwe ngamaTshayina ngokwawo.Kanye ngqo eludongeni!”Ngomhla we-11 kaJuni, iSikhululo soMguquli weLiuzhou seGuangdong-Guangxi UHV Multi-terminal Flexible DC Demonstration Project (emva koku kuthiwa yi "Kunliulong DC Project") yathunyelwa kwiSikhululo saMandla saseWudongde.I-±800kV ebhetyebhetye ngokuthe ngqo eludongeni yafakwa ekusebenzeni kwaye yasebenza ngokuzinzileyo.Usekela-manejala jikelele we-Liuzhou Bureau ye-UHV Company waziva engqongqo kakhulu kwaye enebhongo.

Ukusebenza ngempumelelo kwesi sixhobo kuthetha ukuba ilizwe lam liqhekeze ngokupheleleyo kuthintelo lobuchwephesha bamazwe angaphandle kwinkalo ye-UHV eguquguqukayo yodonga lwe-DC, kwaye izuze impumelelo yetekhnoloji ukusuka ekuqaleni.Oku akunako nje ukuphucula inqanaba elizimeleyo nelilawulekayo legridi ephambili yothumelo lwamandla eNtshona-ukuya-eMpuma, kodwa ikwabonisa ukuba ilizwe lam liphumelele impumelelo enkulu ngezigaba kuphando kunye nophuhliso lwezixhobo zombane eziphezulu eziphezulu. ebaluleke kakhulu ekuqhubeni uphuculo lwetekhnoloji yemizi-mveliso yasekhaya kunye nokusombulula itekhnoloji engundoqo "intamo ebambelele".Iipuzzle zibalulekile.

Njengesixhobo esingundoqo kwiprojekthi ye-UHV, i-flexible yodonga lwe-DC bushing kuphela kwendlela phakathi kweholo yevalvu kunye nebala le-DC lesikhululo sokuguqula i-UHV.“I-DC eguquguqukayo yokutyhutyha eludongeni ilingana 'nomqala' we-DC transmission system kwaye kuphela kwejelo le-DC elisebenza ngokungena nokuphuma kwiholo yevalvu.Ayinakusebenza ngokuqhelekileyo.”utshilo u-Chen Huan, usekela-manejala jikelele kwisebe le-innovation kunye ne-digitalization yenkampani ye-ultra-high voltage.

Nangona kunjalo, iteknoloji engundoqo engundoqo ye-DC ngokusebenzisa-udonga bushings ibisoloko isezandleni zabenzi abambalwa bangaphandle.ilizwe lam kudala lixhomekeke ekuthengisweni kwamanye amazwe kwaye alinalungelo lokuthetha ngexabiso.Ixabiso lokungeniswa kwempahla yesixhobo liphezulu ukuya kumashumi ezigidi zeeyuan.Akunjalo kuphela, xa kukho ukungaphumeleli okukhulu kwezixhobo, kunokubuyiselwa kuphela kubavelisi bangaphandle ukuze bagcinwe.Ixesha lokugcinwa kunye nomjikelo akulula ukumisela, kwaye umsebenzi awusebenzi kakhulu.

Kuphela ngokugxininisa ekuqaliseni izinto ezintsha kunye nokuqonda ukuzithemba kwezobuchwepheshe kunye nokuziphucula ukuba asinakulawulwa ngabanye.Ukusukela kwi-100% yokuxhomekeka ekuthengeni ngaphandle kweprojekthi ye-Tianguang DC, ukuya kwiprojekthi yokuqala yehlabathi ye-UHV ezimeleyo-iprojekthi ye-Yunguang DC, emva koko ukuya kwiprojekthi yokuqala yehlabathi ye-±800kV ye-multi-terminal flexible UHV transmission project, i-China Southern Power Grid iye yaqhubeleka ngokuKhuthaza indawo ezimeleyo yeteknoloji yothumelo lwe-DC, ikhokelela i-UHV kwixesha elitsha le-DC eguquguqukayo, kwaye iqhubele phambili inyathelo ngenyathelo ekuzithembeni kunye nokuphucula iteknoloji.

Ekuqaleni kweprojekthi ye-Kunliulong DC, ukuze kulungiswe ingxaki "yentamo exinyiweyo" ye-DC yasekhaya.iteknoloji yothumelo, Uphando oluzimeleyo kunye nophuhliso lwe-flexible straight-through wall bushings lubekwe kwi-ajenda yi-China Southern Power Grid Corporation.Injongo ayikona nje ukuqonda indawo yendawo ye-bushing, kodwa inokusebenza okungcono kuneemveliso ezithunyelwa ngaphandle, kwaye iqonda ukutsiba ukusuka "kumlandeli" ukuya "kwinkokeli" yezixhobo eziphambili ze-DC.Ukuza kuthi ga ngoku, i-China Southern Power Grid Corporation ikhokele ekunxibelelaniseni izixhobo zophando-nzulu kwishishini, ikhethe ii-backbones zobugcisa ezingama-27, yaza yenza i-innovation consortium ne-China Xidian Group kunye ne-Xi'an Jiaotong University.Njengeyunithi edibeneyo yophando kunye nophuhliso lwezixhobo, i-China XD Group yoyisile iitekhnoloji ezininzi ezingundoqo ezifana nolawulo lwenkqubo ye-capacitor cores enkulu ye-adhesive-impregnated paper capacitor cores, i-casing design phantsi kwesenzo sombane, i-thermal, kunye nemimandla yomatshini, ukuqinisekisa ukuguquguquka. inkqubela yemisebenzi ephambili..

Emva kweenyanga ezili-14 zophando oluqhubekayo, iqela elidibeneyo le-R & D ekugqibeleni ligqibe ngempumelelo uphando oluzimeleyo kunye nophuhliso lweseti yokuqala ye-flexible straight-th through wall bushings, kwaye yaphumelela ngempumelelo uvavanyo.

“Xa kuthelekiswa neebhusholo ezikhoyo ezithengwa kumazwe angaphandle, umthamo wethu wokuthwala unyuke nge-10%, umyinge wokugquma unyuke nge-9%, amandla oomatshini anyuke nge-50%.Ezona zalathisi ziphambili kunezixhobo ezifanayo ezisuka kumazwe angaphandle.”Ngokutsho kweengcali zobugcisa zeqela leprojekthi ye-R&D, i-±800kV flexible DC wall bushing ivelise impumelelo etyebileyo yobugcisa kunye nepropathi enomgangatho ophezulu wokuqonda, kwaye ilima amalungelo awodwa abenzi angundoqo angama-24.

Transformer types and characteristics


Ixesha lokuposa: Feb-11-2022