Ka tsoelo-pele e potlakileng ea indasteri ea photovoltaic, bokhoni bo kentsoeng bo ntse bo eketseha.Libakeng tse ling, matla a kentsoeng a tletse, 'me lisebelisoa tse ncha tsa letsatsi ha li khone ho rekisa motlakase inthaneteng.Lik'hamphani tsa grid li hloka hore grid e hoketsoeSistimi ea PVe hahiloeng nakong e tlang e be litsamaiso tsa ho fehla matla a morao-rao.
Counterflow ke eng?
Reverse current ke eng?Lenaneong la PV, matla a motlakase ka kakaretso a fanoa ho tloha ho marang-rang ho ea mojaro, o bitsoang pele hona joale.Ha tsamaiso ea PV e kenngoa, haeba matla a tsamaiso ea PV a le matla ho feta matla a mojaro oa sebaka seo, matla a sa sebelisoang a romelloa ho marang-rang.Ha tataiso ea hona joale e fapane le ea maqhubu a tloaelehileng, sena se bitsoa 'reverse current'.Ka methareng ea litsela tse peli tse kopantsoeng ke marang-rang, matla a pele ke matla a fanoang ho tloha ho marang-rang ho ea mojaro, 'me matla a morao ke matla a fanoang ho tloha ho PV ho ea ho marang-rang.Sistimi ea morao-rao ea PV e bolela hore matla a hlahisoang ke PV a ka sebelisoa feela ke meroalo ea lehae mme a ke ke a romelloa kantle ho marang-rang.
Ha PV inverter e fetola lintlha tsa DC tse hlahisoang ke li-module tsa PV ka matla a AC, ho na le likarolo tsa DC le li-harmonics, ho se leka-lekane ha hona joale ka mekhahlelo e meraro le ho se tsitse ha matla a tlhahiso.Ha matla a hlahisoang a kenngoa ka har'a marang-rang a sechaba, a tla baka tšilafalo ea harmonic ho marang-rang, e ka etsang hore motlakase oa marang-rang o fetohe habonolo le ho fofa.Haeba ho na le mehloli e mengata e joalo ea ho fehla matla a fepelang matla ka har'a marang-rang, boleng ba matla a marang-rang bo tla senyeha haholo.Ka hona, mofuta ona oa tsamaiso ea motlakase oa photovoltaic o tlameha ho ba le lisebelisoa tsa ts'ireletso tsa morao-rao ho thibela ho hlaha ha hona joale.
Ho ka thijoa joang ho khutlela morao?
Anti-reversemolao-motheo oa hona joale oa ho sebetsa: Kenya eanti-reversemitha ea hajoale kapa sensor ea hajoale sebakeng sa khokahano ea marang-rang.Ha e lemoha phallo ea hona joale ho marang-rang, e romela letšoao ho inverter ka puisano ea 485, 'me inverter e fokotsa matla a tlhahiso ho fihlela morao-rao oa morao-rao ke zero.Sena sea hlokomelaanti-reversetshebetso ya jwale.Ho latela maemo a fapaneng a motlakase oa sistimi, sistimi ea PV e ka aroloa ka karolo e le 'ngoeanti-reversetsamaiso ea hona joale le mekhahlelo e meraroanti-reversetsamaiso ea joale.
Mokhoa oa ho khetha eanti-reversemitha e bohlale ea hona joale?
Ha tlhahiso ea matla ea PV e le kholo ho feta tlhoko ea mojaro, matla a ka morao a hlahisoa.Re hloka meter ho lemoha le ho fumana matla a sebetsang a motlakase, ebe meter e romela letšoao ka puisano ea RS485 ho sebelisana le data ea inverter ho laola matla a phallo ea inverter ho leka-lekanya matla a tsoang le matla a motlakase.
Ho nepahala: Khetha mitha e bohlale e lekanyang ka nepo tšebeliso e ntle le e mpe ea motlakase.E lokela ho nepahala haholo ho netefatsa hore tefiso e nepahetse le ho beha leihlo.
Tšebelisano: Lekola hore meter e bohlale e lumellana le sistimi ea hau ea motlakase le litlhoko tsa ts'ebeliso.E lokela ho sebetsa ka mokhoa o ts'oanelang le lisebelisoa tsa hau tse teng 'me e khone ho hokela tsamaisong ea metering ea lisebelisoa.
Liprothokholo tsa puisano: Etsa bonnete ba hore mitha e bohlale e ts'ehetsa liprothokholo tsa puisano tse tsamaellanang le marang-rang a ts'ebeliso.Mekhoa e tloaelehileng ke Modbus, DLMS/COSEM le Zigbee.
Tsamaiso ea data: Nahana ka bokhoni ba taolo ea data ea meter e bohlale.E lokela ho ba le sebaka se lekaneng sa polokelo le bokhoni ba ho fetisetsa data ho tsamaiso e bohareng bakeng sa ho lefella le ho hlahloba.Batla limithara tse fanang ka encryption ea data le phetiso e sireletsehileng.
Nako ea poso: Sep-08-2023