Ukususela kumbono wobugcisa, ukwamkela ukuhanjiswa kwe-± 800 kV UHV DC, umbindi womgca awufuni ukulahla indawo, enokuthumela inani elikhulu lamandla ngokuthe ngqo kwiziko elikhulu lomthwalo; kwimeko ye-AC / DC yokuhanjiswa okuhambelanayo, inokusebenzisa i-modulation ye-bilateral frequency ukuthintela ngokufanelekileyo i-oscillation ye-oscillation yengingqi ephantsi, kunye nokuphucula umda wokuzinza kwexeshana (oguquguqukayo) we-cross-section; kunye nokusombulula ingxaki yokugqithisa i-short-circuit current yesiphelo esikhulu sokufumana igridi yamandla. Ukwamkela ukuhanjiswa kwe-1000kV AC, umbindi unokuwiswa kunye nomsebenzi wegridi; ukuqinisa uthungelwano lombane ukuxhasa ukuhanjiswa kombane kwiDC enkulu; ngokusisiseko ukusombulula iingxaki zombane wendlela emfutshane ogqithisa umgangatho wegridi enkulu yokufumana isiphelo kunye nomthamo ophantsi wothumelo wentambo ye-500kV, kunye nokwandisa ubume begridi yamandla.
Ngokumalunga nomthamo wothumelo kunye nokusebenza kozinzo, usebenzisa i-± 800 kV UHV DC transmission, ukuzinza kothumelo kuxhomekeke kumlinganiselo osebenzayo wesekethe emfutshane (ESCR) kunye ne-inertia esebenzayo (Hdc) yegridi ekupheleni kokufumana, kunye nesakhiwo segridi ekupheleni kokuthumela. Ukwamkela ukuhanjiswa kwe-AC ye-1000 kV, amandla okuhambisa kuxhomekeke kumthamo wesiphaluka esifutshane kwindawo nganye yokuxhasa umgca kunye nomgama womzila wokuhambisa (umgama phakathi kweendawo zokulahla ezimbini ezikufutshane); ukuzinza kokudluliselwa (umthamo wokuvumelanisa) kuxhomekeke kubukhulu be-angle yamandla kwindawo yokusebenza (umahluko phakathi kwee-angles zamandla kwiziphelo ezimbini zomgca).
Ngokombono wemiba engundoqo yobugcisa efuna ingqwalasela, ukusetyenziswa kothumelo lwe-±800 kV UHV DC kufuneka kugxininise kwibhalansi yamandla e-static asebenzayo kunye ne-dynamic reactive backup yamandla kunye nokuzinza kwamandla ombane wesiphelo sokufumana igridi, kwaye kufuneka kugxininise kwimiba yokhuseleko lwamandla ombane wenkqubo obangelwa kukungaphumeleli kwangaxeshanye kwesigaba sokutshintsha kwinkqubo ye-multi-drop ye-DC feeder. Ukusetyenziswa kwe-1000 kV ukuhanjiswa kwe-AC kufuneka kuthathelwe ingqalelo kwi-AC inkqubo yohlengahlengiso lwesigaba kunye neengxaki zolawulo lombane xa imo yokusebenza iguqulwa; ukunikela ingqalelo kwiingxaki ezinjengokudluliselwa kwamandla aphezulu kumacandelo abuthathaka ngokwentelekiso phantsi kweemeko ezimbi kakhulu; kunye nokunikela ingqalelo kwiingozi ezifihlakeleyo zeengozi zokucima umbane kwindawo enkulu kunye namanyathelo azo okuthintela.
Ixesha lokuposa: Oct-16-2023