Kusiyana pakati pa kutumiza kwa DC ndi AC

Kuchokera pamalingaliro aukadaulo, kugwiritsa ntchito kufalitsa kwa ±800 kV UHV DC, pakati pa mzere sipafunika kutsika, komwe kumatha kutumiza mphamvu zambiri mwachindunji ku malo akuluakulu olandirira katundu; pankhani ya kufalitsa kwa AC/DC kofanana, ingagwiritse ntchito kusintha kwa ma frequency awiriawiri kuti ilepheretse bwino kugwedezeka kwa ma frequency otsika m'chigawo, ndikukweza malire a kukhazikika kwakanthawi (kwamphamvu) kwa gawo lodutsa; ndikuthetsa vuto lopitilira mphamvu yamagetsi yochepa ya ma gridi akulu olandirira magetsi. Pogwiritsa ntchito kufalitsa kwa 1000kV AC, pakati patha kugwetsedwa ndi ntchito ya gridi; kulimbitsa gridi kuti ithandizire kufalitsa kwamagetsi akuluakulu a DC; kuthetsa mavuto a ma current amagetsi ochepa kuposa muyezo wa gridi yayikulu yolandirira magetsi ndi mphamvu yotsika ya 500kV, ndikukonza kapangidwe ka gridi yamagetsi.

Ponena za mphamvu yotumizira ndi kukhazikika kwa magetsi, pogwiritsa ntchito ±800 kV UHV DC transmission, kukhazikika kwa magetsi kumadalira chiŵerengero cha magetsi chogwira ntchito (ESCR) ndi mphamvu yogwira ntchito (Hdc) ya gridi kumapeto kwa magetsi, komanso kapangidwe ka gridi kumapeto kwa magetsi. Pogwiritsa ntchito mphamvu yotumizira ya 1000 kV AC, mphamvu yotumizira magetsi imadalira mphamvu yogwira ntchito ya chigawo chilichonse chothandizira cha mzere ndi mtunda wa mzere wotumizira magetsi (mtunda pakati pa malo ogwetsa magetsi a malo awiri oyandikana nawo); kukhazikika kwa magetsi (mphamvu yogwirizanitsa magetsi) kumadalira kukula kwa ngodya yamagetsi pamalo ogwirira ntchito (kusiyana pakati pa ngodya za magetsi kumapeto awiri a mzere).

Kuchokera pa nkhani zazikulu zaukadaulo zomwe zimafunika kusamalidwa, kugwiritsa ntchito ±800 kV UHV DC transmission kuyenera kuyang'ana kwambiri pa static reactive power balance ndi dynamic reactive power backup ndi voltage stability ya receiving power end, ndipo kuyenera kuyang'ana kwambiri pa nkhani za chitetezo cha system voltage zomwe zimachitika chifukwa cha kulephera kwa phase switching mu multi-drop DC feeder system. Kugwiritsa ntchito 1000 kV AC transmission kuyenera kuyang'ana kwambiri mavuto a AC system phase adjustment ndi voltage regulation pamene operation mode yasinthidwa; kuyang'ana kwambiri mavuto monga kusamutsa mphamvu zambiri m'magawo ofooka pansi pa vuto lalikulu; komanso kuyang'ana kwambiri zoopsa zobisika za ngozi za blackout m'dera lalikulu ndi njira zodzitetezera.