Ka kgolo e kgolo ya diporojeke tse ntjha tsa eneji tse kang dimela tsa motlakase tsa photovoltaic (PV), ditsamaiso tsa polokelo ya eneji, le diteishene tsa ho tjhaja dikoloi tsa motlakase (EV), mokgwa wa "DCization" wa ditsamaiso tsa kabo ya matla o se o hlahelletse haholo. Leha ho le jwalo, ho se utlwisisehe ho tlwaelehileng ho ntse ho tswela pele kgethong: ho sebedisa di-circuit breaker tsa AC ka kotloloho maemong a DC, e leng se lebisang dikotsing tsa polokeho jwalo ka ho hloleha ho timela ha arc le ho se sebetse hantle ha tshireletso. Nyeoe ya nnete e bone seteishene sa polokelo ya eneji se lahlehelwa ke dimilione ka lebaka la potoloho e kgutshwane e bakwang ke di-circuit breaker tse sa tsamaellaneng. Le hoja di tshwana ka ponahalo, di-circuit breaker tsa DC le AC di fapana ka ho feletseng ka moralo, diparamente tsa tekheniki, le maemo a tshebediso. Sengolwa sena se arola dipharologanyo tsa tsona tsa bohlokwa ho pholletsa le dibopeho tse 5 ho fana ka tataiso e sebetsang bakeng sa kgetho ya projeke e ntjha ya eneji.
Papiso ea Bohlokoa: Litekanyo tse 5 tsa ho Utloisisa Li-DC khahlanong le Li-AC Circuit Breakers
Tafole e latelang e bapisa mefuta ena e 'meli ka pono, ka litlhaloso tse ling ho totobatsa bohlokoa ba maemo a macha a matla:
| Tekanyo ea Papiso | Sehahi sa Potoloho sa AC | Seqhomane sa Potoloho sa DC | Tšusumetso ea Bohlokoa Maemong a Matla a Macha |
| Bothata ba ho Fela ha Arc | Motlakase oa AC o na le "lintlha tse tšelang lefela" (hang ka mor'a metsotso e 10), o nolofalletsang ho timela ha arc ea tlhaho ka sebopeho se bonolo. | Ha ho na lintlha tse tšelang lefela ho DC; li-arcs li lula nako e telele ka matla a mangata, li hloka mekhoa e khethehileng ea ho timela (mohlala, ho phatloha ha makenete, ho sitisa vacuum) | Motlakase o phahameng/wa hona joale mahlakoreng a macha a DC a matla (mohlala, litsamaiso tsa polokelo ea matla) li eketsa likotsi tsa ho phatloha ha arc ka li-circuit breaker tsa AC, e leng se behang polokeho ea lisebelisoa kotsing. |
| Litšobotsi tsa Motlakase/Hajoale | E ikamahanya le maqhubu a AC sine; di-voltage tse lekantsweng hangata ke 220V/380V/10kV | E loketse motlakase o tsitsitseng oa DC; li-voltage tse lekantsoeng ho fihlela ho 500V/1000V/1500V (tse ikhethileng ka matla a macha) tse nang le khanyetso khahlanong le "tšusumetso ea phetoho" | Li-module tsa PV tse hokahantsoeng ka letoto li fihlella li-voltage tsa DC tse fetang 1000V, moo matla a sa lekaneng a ho mamella motlakase a li-circuit breaker tsa AC a bakang ho senyeha ha insulation |
| Mokhoa oa Tšireletso | E shebana le ho imeloa haholo le tšireletso ea potoloho e khuts'oane; li-curve tse khopameng tse ipapisitseng le litšobotsi tsa mojaro oa AC | E eketsa "tšireletso ea polarity," "ts'ireletso ea ho hloleha ha phetoho," le "khatello ea hona joale ea DC inrush" tšireletsong ea mantlha. | Mekhoa ea polokelo ea matla e hlahisa maqhubu a DC a kenang nakong ea ho tjhaja/ho ntsha motlakase; Li-circuit breaker tsa AC ha li na tšireletso e tobileng, e leng se etsang hore li khoptjoe kapa li hlolehe ka bohata. |
| Moralo oa Meaho | Kamore e bonolo ea ho tima mollo ea arc; boholo bo bonyenyane le theko e tlase | Moralo o matlafalitsoeng oa ho timela ha arc + insulation; boholo bo boholo hanyane le litšenyehelo tse phahameng ho feta tsa AC. | Merero e mecha ea eneji e hloka polokeho e feteletseng; Sebopeho se ikhethileng sa li-circuit breaker tsa DC se netefatsa ts'ebetso e tsitsitseng ea nako e telele |
| Nako ea Bophelo le Tlhokomelo | Bophelo ba ~lilemo tse 10 maemong a AC ka litšenyehelo tse tlase tsa tlhokomelo | Bophelo ba lilemo tse 8-10 maemong a DC; e hloka tlhahlobo ea kamehla ea kamore ea arc ka maemo a holimo a tlhokomelo | Litsi tse kholo tsa polokelo ea PV/energy li beha pele li-circuit breaker tsa DC tse phelang nako e telele ho fokotsa litšenyehelo tsa nako ea ho sebetsa le tsa tlhokomelo |
Tlhaloso e Tlatsetsang:
Maemo a macha a DC a eneji (mohlala, mahlakore a khoele ea PV, lihlopha tsa betri ea polokelo ea eneji, liphetho tsa DC tsa charger ea EV) li na le "ha ho na lintlha tse tšelang lefela, motlakase o phahameng, le motlakase o moholo" - maemo a fetang ho fela ha arc ea li-arc tsa li-circuit breaker tsa AC le matla a ho mamella motlakase. Sena se hloka li-circuit breaker tse inehetseng tsa DC bakeng sa lits'ebetso tse ncha tsa eneji.
Li-DC circuit breaker tsa rona tse ncha tse ikgethang ka eneji li sebelisa theknoloji ea vacuum arc extinction + magnetic blowout (nako ea arc extinction ≤2ms) ka li-voltage tse lekantsoeng tse koahelang 500V-1500V, li ikamahanya hantle le maemo a PV, polokelo ea matla le ho tjhaja ha EV.
Melao-motheo e Sebetsang ea Khetho bakeng sa Maemo a Macha a Matla
1. Notlela Tataiso ea Core ka Mofuta oa Hona Joale: Disekete tsa DC (mohlala, dithapo tsa PV, dipakete tsa betri tsa polokelo ya matla, dihlahiswa tsa DC tsa tjhaja) di hloka di-circuit breaker tsa DC; Disekete tsa AC (mohlala, dihlahiswa tsa inverter, dintlha tsa kgokelo ya gridi, di-loop tsa kabo ya motlakase o tlase) di sebedisa di-circuit breaker tsa AC—tshebediso e kopantsweng e thibetswe ka ho feletseng.
2. Ntlafatsa Khetho ka Maemo a Boemo:
①Limela tsa Motlakase tsa PV: Beha pele li-circuit breaker tsa DC tse nang le "phetoho e kholo ea motlakase (500V-1000V) + tšireletso ea khokahano e khutlelang morao."
②Mekhoa ea ho Boloka Matla: Khetha mehlala e nang le "ho robeha ka potlako (≤2ms) + ho hatelloa ha motlakase o kenang ka potlako" ho qoba likotsi tsa potoloho e khuts'oane ea betri.
③Liteishene tsa ho tjhaja tsa EV: Khetha di-circuit breaker tsa DC tsa "compact + high protection (IP67)" bakeng sa ho kenya kantle.
3. Fokotsa Likotsi ka Litifikeiti: Khetha dihlahiswa tse latelang GB/T 14048.3-2017 (tekanyetso ya naha ya DC circuit breaker), CE (bakeng sa dimmaraka tsa Yuropa), le UL (bakeng sa dimmaraka tsa Amerika Leboya) ho fihlela ditlhoko tsa ho latela melao ya projeke ya eneji e ntjha.
Thuto ea Nyeoe: Likotsi tsa Khetho e Fosahetseng khahlanong le Boleng ba Khetho e Nepahetseng
Seteishene sa motlakase sa 100MW PV qalong se ne se sebelisa li-circuit breaker tsa AC ka lehlakoreng la DC ho fokotsa litšenyehelo. Mollo o bakiloeng ke ho hloleha ho timela ha arc o etsahetse kamora likhoeli tse 3 tsa ts'ebetso, e leng se ileng sa fella ka tahlehelo e tobileng ea li-yuan tse limilione tse 2. Kamora ho fetohela ho li-circuit breaker tse inehetseng tsa DC, seteishene se sebelitse ka botsitso ka lilemo tse 2 ntle le liphoso. Morero o mong oa polokelo ea matla o sebelisang li-circuit breaker tsa rona tsa 1500V DC o ile oa qoba likotsi tsa potoloho e khuts'oane ea libeteri tse 3 ka ho robeha ka potlako, oa fokotsa litšenyehelo tsa tlhokomelo ka 40% ha ho bapisoa le karolelano ea indasteri. Maemo ana a tiisa hore khetho e nepahetseng ea li-circuit breaker e netefatsa polokeho le poloko ea litšenyehelo tsa nako e telele maemong a macha a matla.
Qetello: Tataiso ea Phetoho + Matlafatso ea Lisebelisoa
Polokeho ea kabo ea motlakase mererong e mecha ea matla e qala ka khetho e nepahetseng ea sehahi sa potoloho. Jwalo ka setsebi sa litharollo tsa sehahi sa potoloho,BATHOfana ka mefuta e felletseng ea li-DC circuit breaker bakeng sa PV, polokelo ea matla, le lits'ebetso tsa ho tjhaja tsa EV, tse tšehetsang moralo oa liparamente tse ikhethileng.Ka kopo ikopanye le baeletsi ba rona ba tekheniki bakeng sa tšehetso ea mahala ea khetho e ikhethileng ea projeke!
Nako ea poso: Hlakola-02-2026
