Isiteshi Sokuguqula I-DC Esiguquguqukayo Se-UHV Esikhulu Sokuqala Emhlabeni Sesakhiwe!

Ngokuthuthuka okusheshayo kwamandla amasha, iShayina isibe yizwe elikhulu kunawo wonke lamandla kagesi asebenzisa amanzi, amandla omoya, ukukhiqizwa kwamandla elanga, kanye namandla avuselelekayo kubangela ukwanda okuqhubekayo. Ukuze lokhu kuguquguquka kwamandla kagesi ahlanzekile ngezikhathi ezithile, ukuthuthukisa ubuchwepheshe bokudlulisa amandla kubalulekile. Lokhu kudinga imishini yokudlulisa amandla ethuthukisiwe kakhulu.

Isiteshi Sokuguqula i-Liubei eGuangxi siyisiteshi sokuqala sokuguqula i-UHV multi-terminal esiguquguqukayo se-DC emhlabeni. Futhi kuyiphrojekthi ye-multi-terminal hybrid DC enezinga eliphezulu kakhulu le-voltage kanye nomthamo wokudlulisa omkhulu kunayo yonke emhlabeni.

Isizukulwane esisha se-valve yokuguqula i-DC eguquguqukayo sinesivinini esisheshayo sokulawulwa kwamandla, esingaletha isinxephezelo esisheshayo sokushaja kwamandla ahlanzekile okushintshashintshayo kanye namandla, futhi sishintshe ugesi onamandla futhi ongalawuleki ube ngoguquguqukayo, okwenza kube nokwenzeka ukuthi amandla ahlanzekile axhunywe kugridi. Ngesikhathi esifanayo, kunganciphisa isikhathi sokuxazulula inkinga kugridi sibe ngaphansi kwama-millisecond ayi-100.

Enye yezingqalasizinda zevalvu yokuguqula i-DC eguquguqukayo yimoduli eguquguqukayo. Intengo yemoduli eguquguqukayo ilingana neyemoto endala. Ingacubungula amashumi ezinkulungwane zamaphuzu edatha ngenkulungwane yesekhondi ukuze ifinyelele ukulawula okunembile kwamandla okudlulisa futhi ithuthukise ukunemba kokulawula nokuvikela kwegridi yamandla kuze kube sezingeni le-microsecond..

Ivalvu yokuqala emhlabeni ye-±800kV eguquguqukayo ye-DC converter enamandla aphezulu kakhulu:

Iphrojekthi Yokubonisa yaseKunliulong DC ±800 KV Kunbei converter station yokuhlola ukukhanya：

I-TBEA yenza umsebenzi wokuthuthukisa nokukhiqiza imishini yesiteshi sokuguqula i-Udongliu North Pole 1, esinomthamo ophelele we-3GW, okubandakanya ama-valve hall amabili kanye nemibhoshongo yama-valve engu-24.
Esinye isici esiyinhloko ikhadi lebhodi lokulawula, eliwubuchopho bevalvu yokuguqula i-DC eguquguqukayo. Kunamadivayisi ezinkulungwane ezingamashumi ezinkulungwane ekhadini lebhodi elibonakala livamile, ngalinye linomugqa walo wokudlulisa, okwazi ukufeza ukudluliselwa kwemvamisa ephezulu kakhulu ye-Hertz engaphezu kwezigidi eziyi-1. Umthamo omkhulu kangaka wokucubungula idatha ulingana nezikhathi ezingu-8,000 zedatha elayishwe yisistimu yokulawula ivalvu yonke ngokuphazima kweso lomuntu kwemizuzwana engu-0.2.

Lobu buchwepheshe buyindlela evelele kakhulu yobuchwepheshe bokusetshenziswa kwamandla obusetshenziswa yizikhondlakhondla zomhlaba njengamanje, futhi kunamazwe amathathu kuphela emhlabeni angabukhiqiza.

I-valve entsha ye-DC converter eguquguqukayo isilungele ukusebenza. Izosetshenziswa kulayini omusha we-DC transmission oguquguqukayo, iphrojekthi ye-Kunliulong DC, ezothwala ugesi ongama-kilowatt-hours ayizigidi eziyizinkulungwane ezingu-33 okhiqizwa minyaka yonke yi-Wudongde Hydropower Station, isiteshi sikagesi samanzi sesikhombisa ngobukhulu emhlabeni, esingamakhilomitha angu-1,452 ukuya ezifundazweni zaseGuangdong naseGuangxi.

Ubuchwepheshe bokudlulisa amandla kagesi aqondile (VDC), obuvumela ukulawulwa kwegridi okusheshayo nokuguquguqukayo, bubhekwa njengobuchwepheshe obuyisihluthulelo sokubhekana nokuxhumeka okukhulu kwegridi kwamandla avuselelekayo esikhathini esizayo.