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.
Ngokubhekiselele kumthamo wothumelo kunye nokusebenza kozinzo, usebenzisa i-±800 kV UHV DC transmission, uzinzo lothumelo luxhomekeke kumlinganiselo osebenzayo wesekethe emfutshane (ESCR) kunye ne-inertia esebenzayo engaguqukiyo (Hdc) yegridi ekupheleni kokufumana, kunye nolwakhiwo igridi 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 kwe-±800 kV UHV DC uthumelo kufuneka kugxininise kwibhalansi yamandla asebenzayo kunye nokugcinwa kogcino lwamandla aguqukayo kunye nokuzinza kwamandla ombane wesiphelo sokufumana igridi, kwaye kufuneka kugxininise kwinkqubo. Imiba yokhuseleko lwamandla ombane ebangelwa kukusilela kwangaxeshanye kokutshintsha kwesigaba kwisixokelelwano sokutya se-DC esinamathontsi amaninzi.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