Sistimi ea photovoltaic (PV), motlakase o hlahisoang o sebelisoa haholo-holo ho fana ka matla ho meroalo. Ha tlhahiso e feta tlhoko ea mojaro, motlakase o feteletseng o khutlela ka har'a gridi, e leng se etsang "motlakase o ka morao." Melao ea gridi hangata e thibela phallo e sa lumelloang, 'me phepelo ea motlakase e sa lumelloang e ka fella ka likotlo. Bakeng sa merero ea PV e etselitsoeng ho itšebetsa ntle le ho fepa gridi, tšireletso ea ho thibela phallo e ka morao ke ea bohlokoa bakeng sa ho fihlela boikemelo ba matla bo tsitsitseng.
Anti-Backflow ke Eng?
Sistimi ea PV, li-module tsa letsatsi li hlahisa motlakase o tobileng (DC), o fetoloang motlakase o fapanyetsanang (AC) ke inverter ho fana ka motlakase oa lehae. Haeba tlhahiso e feta tšebeliso, motlakase o setseng o khutlela ka har'a gridi, o baka phallo ea motlakase. Mekhoa e nang le ts'ebetso ea anti-backflow e ka fetola tlhahiso ea inverter ho netefatsa hore motlakase o hlahisoang o sebelisoa ka botlalo ke motlakase oa lehae, e leng se thibelang matla a feteletseng ho kena ka har'a gridi.
Hobaneng o ka kenya Anti-Backflow?
Mabaka a ka sehloohong a ho kenya anti-backflow a kenyelletsa:
1. Lithibelo tsa Leano la Grid:Libakeng tse ling, lithibelo tsa gridi kapa maano a thibela ho kenya motlakase ka har'a gridi. Ho khutla ho sa lumelloang ho ka lebisa likotlong.
2. Meeli ea Khokahano ea Gridi:Gridi e beha meeli e tiileng hodima bongata ba matla a ka fepuoang ho yona. Ho feta meeli ena ntle le taolo ho ka sitisa botsitso ba gridi.
3. Molao-motheo oa ho Itšeha:Mekhoa ea PV e etselitsoeng ho itšebeletsa e beha pele tšebeliso ea mojaro oa lehae. Matla afe kapa afe a feteletseng a tlameha ho thibeloa ho kena ka har'a gridi ho sebelisoa lisebelisoa tse thibelang phallo ea motlakase.
Molao-motheo oa ho Sebetsa oa ho Thibela ho Khutlela Morao
Mekhoa ea ho thibela phallo ea motlakase hangata e kenyelletsa mithara ea ho thibela phallo ea motlakase le transformer ea motlakase (CT) e kentsoeng moleng o moholo. Likarolo tsena li lekanya matla a motlakase a nako ea sebele le phallo ea motlakase. Ha motlakase o khutlelang morao o fumanoa, mithara e fetisetsa data ea phallo ea motlakase ho inverter ka puisano ea RS485. Inverter e arabela ka metsotsoana, e fokotsa matla a eona a tlhahiso ho netefatsa hore phallo ea motlakase ho grid e batla e le lefela.
Litharollo tse Khahlanong le ho Khutlela Morao
Litlhophiso tse fapaneng lia fumaneha ho fihlela maemo a fapaneng:
1. Tharollo ea Sistimi ea Thibelo ea ho Khutlela Morao ea Mokhahlelo o le Mong
· Lisebelisoa tse hlokahalang: inverter e tlamiloeng ka gridi, mithara e thibelang phallo ea metsi, le thapo ea puisano.
· E loketse litsamaiso tsa PV tsa bolulo tse nyane.
2. Tharollo ea Sistimi ea Thibelo ea ho Khutlela Morao ea Mekhahlelo e Meraro
· Bakeng sa litsamaiso tsa bolulo tse nang le matla a tlase, limithara tsa DC tse thibelang phallo ea motlakase li ka hokahanngoa ka kotloloho le li-terminal tsa tlhahiso ea AC tsa inverter.
· Bakeng sa litsamaiso tse nang le matla a mangata, li-transformer tsa CT li lemoha motlakase sebakeng sa khokahano ea gridi. Tlhahiso ea CT ea sekaloa ebe e kenngoa ka har'a meter ea anti-backflow bakeng sa tekanyo e nepahetseng ea matla.
3. Tharollo ea Sistimi ea Anti-Backflow ea Multi-Inverter
· Li-inverter tse ngata li hokahantsoe ka li-interface tsa puisano ho data logger.
· Tharollo ena e loketse litlhophiso tse kholo, e fana ka bokhoni bo phahameng le ts'ebetso e matla haholoanyane.
Kakaretso
Litharollo tse thibelang phallo e khutlang li sebetsana le litlhoko tsa leano la "grid e hokahaneng empa e sa fepeloeng" tsa libaka tse itseng. Li ntlafatsa botsitso ba grid, li ntlafatsa polokeho ea sistimi, li ntlafatsa ts'ebetso e ntle ea matla, 'me li ikamahanya le mahlale le maano a ntseng a fetoha. Ka ho sebelisa litsamaiso tse etselitsoeng ho thibela phallo e khutlang, merero ea PV e ka netefatsa ho latela melao, ho tšepahala le ho phela hantle moruong.
