Ukusetyenziswa kweCable ye-HV DC kwiinkqubo zamandla kwiiprojekthi zamandla avuselelekayo

Njengoko utshintsho lwehlabathi oluya ekususweni kwekhabhoni lukhawuleza, ukusebenza kakuhle kothumelo lwamandla akukaze kube yinto ebaluleke kangaka. Kubaphathi bokuthenga kunye neenjineli zeeprojekthi, ukukhetha indlela yothumelo efanelekileyo ngumahluko phakathi kwegridi yamandla enenzuzo enkulu kunye nenye ejongene nokulahleka kwemigca kunye namaxesha okungasebenzi kakuhle kolungiso. Embindini wolu phuculo lweziseko zophuhliso kukhoIntambo ye-HV DC yeenkqubo zamandla.

Ngokukodwa,Intambo ye-75kV DCiye yavela njengesisombululo "esilungileyo"—ukulinganisela amandla amakhulu okuhambisa umbane kunye neendleko zokufakelwa ezilawulekayo.

Kule khokelo ipheleleyo, siza kuhlola usetyenziso oluphambili lweintambo ye-75kV yombane ophezulu, indima yayo kwiiprojekthi zamandla ahlaziyekayo zanamhlanje, umsebenzi wayo obalulekileyo kubunjineli bemizi-mveliso obuphambili, kunye neendlela zeminyaka emi-5 ezibumba ikamva lothumelo lwamandla oluhamba ngqo olune-high-voltage.

Yintoni intambo yangoku eyi-75kV Direct Current?

Ukuze ufumane isalathiso esikhawulezileyo:AIntambo yangoku ethe ngqo ye-75kVyi-power conduit ekhethekileyo eyenzelwe ukudlulisa umbane othe ngqo (DC) kwi-75,000 volts. Ngokungafaniyo neentambo zemveli ze-alternating current (AC), iintambo ze-DC azinangxaki ye-capacitive charging currents, ezivumela ukuba zidlulise amandla amakhulu kumgama omde kakhulu kwaye zingalahlekelwa ngamandla amaninzi.

Iingenelo eziphambili ziquka:

• Ukulahlekelwa kothumelo oluya kuthi ga kwi-30% kumgama omde xa kuthelekiswa ne-AC.

• Ifuna abaqhubi abambalwa (ngesiqhelo iipali ezimbini).

• Ivumela uqhagamshelo lwegridi olungangqamananga.

• Ubushushu obuqinileyo kakhulu (obuhlala buphucukile nge-XLPE) kwiindawo ezixineneyo.

Izicelo eziphambili kwiiprojekthi zamandla avuselelekayo

Ukuhlanganiswa kwemithombo yamandla avuselelekayo kwiigridi zesizwe kuvelisa umngeni okhethekileyo wejografi: iindawo ezilungileyo zeefama zomoya kunye nelanga azifane zibe kufutshane nezixeko ezisebenzisa umbane. Kulapho keintambo ye-DC yombane ophezulu yokuhambisa umbaneiba yinto engenakuphepheka.

1. Ukuhlanganiswa kweFama yoMoya eLwandle oluPhesheya

Iiturbine zomoya ezisebenza ngaphandle kolwandle zityhalelwa elwandle ukuze zibambe imimoya enamandla nengaguquguqukiyo. Iintambo ze-AC zemveli zilahlekelwa ngamandla kakhulu kumgama omde ongaphantsi kwamanzi.Intambo ye-75kV DCisebenza njengentambo yokuthumela ngaphandle efanelekileyo kwii-arrays eziphakathi ukuya kwezinkulu zaselwandle. Ihambisa umbane ngokufanelekileyo ukusuka kwisitishi sokuguqula umbane ongaphandle ukuya kwigridi yaselwandle, iqinisekisa ukuba i-megawattage ephezulu ifikelela kumthengi wokugqibela.

2. Izityalo ezinkulu zamandla elanga

Iifama zelanga ezisebenzisa amandla elanga zihlala zigubungela amawaka eehektare kwiindawo ezikude zasentlango okanye kwiindawo ezomileyo.Intambo ye-HV DC yeenkqubo zamandla, abaphuhlisi banokwakha iigridi ezinkulu zokuqokelela zeDC ezinciphisa isidingo see-inverters ezininzi ze-AC/DC ezibizayo ezisasazwa kwindawo yonke. Amandla ahlanganiswa aze adluliselwe ngokufanelekileyo kwigridi ephambili, nto leyo eyandisa i-ROI ye-asethi yelanga.

3. Iinkqubo zokugcina amandla ebhetri

Njengoko amandla ahlaziyekayo ehlala ixesha elide, ukugcinwa kwebhetri kwisikali segridi kubalulekile. Iibhetri zigcina kwaye zikhuphe umbane ngqo.intambo ye-75kV yombane ophezuluUkuqhagamshela ii-array ezinkulu zebhetri ngqo kwimigca yothumelo lwe-DC kususa ilahleko zokuguqulwa, kwandisa ukusebenza kakuhle kwendawo yokugcina yonke.

Intambo ye-75kV yeZixhobo zoShishino kunye noBunjineli boMbane

Ngaphaya kwegridi yombane, kukho imfuneko enkulu yamandla azinzileyo, anomthamo ophezulu kumashishini amakhulu nakwimveliso yobuchwepheshe obuphezulu.

Ukwenziwa kweMveliso eNgcono ePhambili

Umzekelo oyintloko woku lishishini le-semiconductor. Iifektri zokwenza i-semiconductor zesizukulwana esilandelayo (ii-fabs) zixhomekeke kwizixhobo ezinobuthathaka kakhulu, ezisebenzisa amandla amaninzi, ezifana noomatshini be-photolithography be-ultraviolet extreme (EUV). Ezi nkqubo zinkulu zifuna izixhobo zamandla ezizinzileyo nezingenasiphako ukugcina ukuchaneka kwinqanaba le-nanometer.Intambo ye-75kV yezixhobo zoshishinoisetyenziswa rhoqo ngaphakathi kweziseko zesikhululo esisezantsi sendawo ukuze ihle kwaye isasaze umbane we-DC ococekileyo, osebenza ngamandla aphezulu kwiiyunithi zombane ezikufutshane (ii-PSU) zale mishini ibalulekileyo.

Ubunjineli boMbane oBunzima

Njengeintambo ye-voltage ephezulu yobunjineli bombane, umlinganiselo we-75kV usetyenziswa rhoqo kwi:

• Umbane kaloliwe:Ukubonelela ngamandla omqolo kwiinethiwekhi zesitimela ezikhawulezayo.

• Imisebenzi yokwemba:Ukunika amandla oomatshini abakhulu ababophayo abangaphantsi komhlaba kunye neenkqubo zokuhambisa apho isithuba sincinci kwaye kufuneka kuncitshiswe ukuhla kombane.

• Amaziko eDatha:Amaziko edatha e-Hyperscale ajonge ngakumbi kwi-DC voltage backbones ukuze kuncitshiswe ilahleko ze-transformer ezisezantsi kunye nokuphucula ukusebenza kakuhle kwamandla (i-PUE).