Ama-Transformer Akhethekile e-HVDC Flex: Ukunika amandla Amandla Omoya Asebenza Ebangeni Elide

Isingeniso

Njengoba amapulazi omoya asogwini lolwandle ehamba ibanga elide esuka ogwini—ngalé kwamakhilomitha ayi-100 emanzini ajulile—ukudluliselwa kwe-AC kwendabuko kufinyelela imikhawulo yayo yobuchwepheshe. Izintambo zangaphansi kolwandle zisebenza njenge-capacitor ezinkulu, zidla amandla asabelayo futhi zenze ukulethwa kwamandla okuphumelelayo kungenzeki emabangeni amade. Yilapho ubuchwepheshe bokudlulisa obuguquguqukayo be-high-voltage direct current (HVDC) buba yinto ebalulekile, futhi kanye nayo, isigaba esisha sama-transformer akhethekile.

Lesi sihloko sihlola indima yala ma-transformer ekudlulisweni kwamandla omoya olwandle kanye nezidingo zobuchwepheshe eziwenza ahluke kumayunithi avamile.

Ingxenye Yokuqala: Kungani I-HVDC Ishintsha Umoya Wolwandle Olujulile?

Inselele Yokukwazi Ukuphatha.Uma amandla e-AC egeleza ngezintambo zangaphansi kolwandle, ikhebula ngokwalo lisebenza njenge-capacitor. Ngaphesheya kwamakhilomitha angaba ngu-70, amandla asebenzayo asetshenziswa yikhebula aba makhulu kangangokuthi amandla amancane asebenzayo afinyelela ogwini. Ukudluliselwa kwe-HVDC kuqeda le nkinga—ugesi oqondile awudali umphumela we-capacitance, okuvumela ukudluliselwa okuphumelelayo emakhilomitha angamakhulu.

Izinzuzo ze-DC eziguquguqukayo.Ngokungafani ne-HVDC evamile, ethembele ekusekelweni kwegridi ye-AC ezinzile, i-HVDC eguquguqukayo (noma i-"HVDC Flex") isebenzisa abaguquli bemithombo yamandla kagesi abangalawula ngokuzimela amandla asebenzayo nasebenzayo. Lokhu kuyenza ibe yindawo ekahle yokuxhuma imithombo evuselelekayo eguquguqukayo njengomoya wasogwini, ongenawo amandla okujikeleza kwezitshalo zamandla ezivamile.

Ingxenye Yesibili: Kudingeka Ama-Transformer Akhethekile

Izinhlelo ze-HVDC Flex zidinga izinhlobo eziningana zama-transformer akhethekile, ngalinye libhekene nezinselele ezihlukile.

Ama-Transformer e-Converter.Lokhu kuxhuma inethiwekhi yokuqoqwa kwe-AC kuma-valve e-DC converter. Ekusetshenzisweni kolwandle olujulile, kumele babhekane nokucindezeleka kwe-AC kanye ne-DC ngasikhathi sinye—isimo esibeka izidingo ezinkulu ezinhlelweni zokufaka ugesi. Amazinga e-voltage ayanda kancane kancane; amaphrojekthi akamuva afinyelele ku-±500 kV, adinga ama-transformer akwazi ukumelana nezinkundla zikagesi ze-AC kanye ne-DC ezihlanganisiwe.

Ama-Transformer e-Offshore Platform.Njengoba zifakwe emapulatifomu asogwini lolwandle, lawa mayunithi kumele abhekane nezimo zemvelo ezimbi kakhulu: ukugqwala kwesifutho sikasawoti, umswakama ophezulu, ukudlidliza okuvela ekusebenzeni kwamagagasi, kanye nezikhala ezivalekile. Ukuhlolwa kwesifutho sikasawoti kuma-transformer asogwini lolwandle ngokuvamile kudinga amahora angu-1,440—okuphindwe kabili noma kathathu isikhathi semishini ejwayelekile.

Imigomo Yokuklama Elula.Isisindo ngasinye epulatifomu yolwandle sinezela izindleko ezinkulu ezisekelweni nasezikebheni zokufaka. Onjiniyela baphishekela imiklamo emincane nelula ngaphandle kokubeka engcupheni ukuthembeka. Izinto ezintsha zakamuva zifaka phakathi izinhlelo zokupholisa ezithuthukisiwe kanye nezinto zokuvikela ezithuthukisiwe ezinciphisa usayizi we-transformer ngenkathi zigcina ukusebenza kahle.

Ingxenye Yesithathu: Izinselele Zobuchwepheshe

Ukuhlanganiswa Kokufakwa Kokushisa.Ukuhlanganiswa kwama-voltage e-AC ne-DC kuma-transformer e-converter kudala ukusatshalaliswa kwensimu kagesi okuyinkimbinkimbi. Amacala esikhala angaqongelela ezintweni zokufaka ugesi ngaphansi kokucindezeleka kwe-DC, okungase kuholele ekukhishweni kwengxenye kanye nokwehluleka. Ukumodela okuthuthukisiwe kusetshenziswa ukuhlaziywa kwezinto ezilinganiselwe kusiza onjiniyela ukuklama izinhlelo zokufaka ugesi ezilawula le miphumela.

Ukuqina Kwemishini.Ama-transformer angaphandle kolwandle kumele asinde ekuthuthweni olwandle, ukufakwa ezimweni ezinzima, kanye namashumi eminyaka okudlidliza okuqhubekayo. Izakhiwo zamathangi eziqinisiwe, izinhlelo zokubopha ezithuthukisiwe, kanye nokukhethwa kwezingxenye ngokucophelela kuqinisekisa ubuqotho bemishini kuyo yonke impilo yempahla.

Ukupholisa Ezindaweni Ezivalekile.Amapulatifomu asogwini anikeza isikhala esilinganiselwe semishini yokupholisa. Abaklami bathuthukisa ukusebenza kokushisa ngokusebenzisa imodeli ye-fluid dynamics ethuthukisiwe, baqinisekisa ukuthi ama-transformer angasebenza ngokugcwele ngisho nasezindaweni ezishisayo nezivalekile.

Ingxenye Yesine: Iphrojekthi Ebalulekile

Iphrojekthi yomoya osuka eGuangdong Yangjiang Sanshan Island imele intuthuko enkulu kule nsimu. Itholakala ngamakhilomitha angaphezu kwe-100 ukusuka ogwini lwaseShayina, le phrojekthi izoletha amandla ahlanzekile afinyelela ku-2,000 MW endaweni yaseGuangdong-Hong Kong-Macao Greater Bay Area, ikhonza imindeni ecishe ibe yizigidi ezingu-2.4.

Enhliziyweni yayo kukhona ama-transformer e-DC aguquguqukayo angu-±500 kV—amayunithi amakhulu ngalinye linesisindo esingamathani angu-380, afana nezimoto zabagibeli ezingu-200. Lawa ma-transformer andisa amandla kusukela ku-66 kV kuya ku-500 kV AC ngaphambi kokuguqulwa abe yi-DC ukuze adluliselwe. Lo msebenzi udinge ucwaningo nentuthuko iminyaka engaphezu kweshumi, unqoba izinselele zokumelana nosawoti, ukwakheka kokuzamazama komhlaba, kanye nokwenza ngcono isikhala.

Ingxenye Yesihlanu: Iziqondiso Zesikhathi Esizayo

Njengoba umoya osuka ogwini lolwandle ukhula uye emanzini ajulile, amazinga kagesi ayaqhubeka nokukhuphuka. Imigwaqo yezimboni ikhomba kuma-voltage angu-525 kV kanye nama-voltage e-DC aphezulu nakakhulu, adinga ama-transformer anekhono elikhulu lokuvikela kanye nobuningi bamandla.

Imizamo yokulinganisa nayo iyaqhubeka. Izindinganiso zomhlaba wonke ezifana ne-IEC 60076-16 zibhekana ngqo nama-transformer okusetshenziswa kwe-turbine yomoya, zinikeza isiqondiso mayelana nezidingo zokuhlola nokusebenza kokufakwa ogwini.

Isiphetho

Ama-transformer akhethekile e-HVDC Flex avumela ukwanda komoya ogwini lolwandle emanzini ajulile lapho ukudluliselwa kwe-AC kwehluleka khona. Uma kuhlanganiswa izidingo zikagesi ezibucayi nezimo zemvelo ezinzima, lawa mayunithi amelela umkhakha ophambili wobunjiniyela be-transformer.

Kwabachwepheshe bokuthenga, ukuqonda izidingo ezihlukile zezicelo ze-HVDC zasogwini kusiza ekuchazeni imishini efanele nokuhlola amakhono abaphakeli. Njengoba amandla avuselelekayo eqhubeka nokukhula kwawo emhlabeni jikelele, lawa ma-transformer akhethekile azohlala eyizingxenye ezibalulekile zengqalasizinda yamandla ahlanzekile.