Isikhululo sokuqala se-UHV Multi-terminal Flexible DC Converter esakhiweyo kwihlabathi liphela!

Ngenxa yophuhliso olukhawulezileyo lwamandla amatsha, iTshayina ibe lilizwe elikhulu lamandla ombane aphuma emanzini, amandla omoya, ukuveliswa kwamandla elanga, kunye namandla ahlaziyekayo abangela ukwanda okuqhubekayo. Ukuze kubekho olu tshintsho, amandla ombane acocekileyo angenaxesha, ukuphucula iteknoloji yokuhambisa amandla kubalulekile. Oku kufuna izixhobo zokuhambisa amandla eziphucukileyo.

Isitishi sokuguqula iLiubei eGuangxi sisikhululo sokuqala sokuguqula i-UHV multi-terminal esiguquguqukayo se-DC kwihlabathi liphela. Sikwayiprojekthi ye-DC ye-multi-terminal hybrid ene-voltage ephezulu kunye nomthamo omkhulu wokudlulisela emhlabeni.

Isizukulwana esitsha sevalvu yokuguqula i-DC eguquguqukayo sinesantya esikhawulezayo sokulawula amandla, esinokufezekisa imbuyekezo ekhawulezileyo yetshaja yamandla acocekileyo kunye namandla aguqukayo, kwaye sitshintshe umbane onamandla nongalawulekiyo ube ngoguquguqukayo, okwenza kube nokwenzeka ukuba amandla acocekileyo aqhagamshelwe kwigridi. Kwangaxeshanye, inokunciphisa ixesha lokusombulula ingxaki kwigridi libe ngaphantsi kwe-100 milliseconds.

Enye yezona zinto ziphambili zevalvu yokuguqula i-DC eguquguqukayo yimodyuli eguquguqukayo. Ixabiso lemodyuli eguquguqukayo lilingana nelemoto endala. Ingacubungula amashumi amawaka eenqaku zedatha kwiwaka lesekondi ukuze ifezekise ulawulo oluchanekileyo lwamandla okuhambisa kunye nokuphucula ulawulo kunye nokuchaneka kokukhusela kwegridi yamandla ukuya kwinqanaba le-microsecond..

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

Iprojekthi yoMboniso yeKunliulong DC ±800 KV Kunbei converter station yokuvavanya ukukhanya：

I-TBEA ithatha umsebenzi wokuphuhlisa nokuvelisa izixhobo zesikhululo sokuguqula i-Udongliu North Pole 1, esinomthamo we-3GW iyonke, equka ii-valve halls ezimbini kunye nee-valve towers ezingama-24.
Elinye icandelo eliphambili yikhadi lebhodi yokulawula, eliyingqondo yevalvu eguquguqukayo ye-DC converter. Kukho amashumi amawaka ezixhobo ze-elektroniki kwikhadi lebhodi elibonakala liqhelekile, ngalinye linomgca walo wokudlulisela, onokukwazi ukufikelela kuthumelo oluphezulu kakhulu olungaphezulu kwe-1 yeebhiliyoni zeeHertz. Umthamo omkhulu nokhawulezayo wokucubungula idatha ulingana namaxesha angama-8,000 edatha elayishwe yinkqubo yolawulo lwevalvu yonke ngaphakathi kokuqhwanyaza kweliso lomntu kangangemizuzwana eyi-0.2.

Le teknoloji yeyona iphezulu kakhulu kwiteknoloji yokusetyenziswa kwamandla esetyenziswa ziingxilimbela zamandla zehlabathi ngoku, kwaye kukho amazwe amathathu kuphela emhlabeni anokuyenza.

Ivalvu entsha ye-DC converter eguquguqukayo ilungele ukusebenza. Iza kusetyenziswa kumgca omtsha we-DC transmission oguquguqukayo, iprojekthi yeKunliulong DC, eza kuthwala umbane ongama-33 eebhiliyoni zee-kilowatt-hours oveliswa minyaka le yiWudongde Hydropower Station, isikhululo sesixhenxe ngobukhulu emhlabeni, esiziikhilomitha ezili-1,452 ukuya kumaphondo aseGuangdong naseGuangxi.

Itekhnoloji yokudlulisa amandla e-flexible direct current (VDC), evumela ukulawulwa kwegridi ngokukhawuleza nangokuguquguqukayo, ithathwa njengetekhnoloji ebalulekileyo yokujongana noqhagamshelo olukhulu lwegridi yamandla avuselelekayo kwixesha elizayo.