Eminyakeni yamuva, ubuchwepheshe bokukhiqiza amandla e-photovoltaic buye bahamba phambili ngokugxuma kanye nemingcele, futhi umthamo ofakiwe ukhule ngokushesha. Kodwa-ke, i-photovoltaic power generation inezihibe ezifana nezikhawu futhi ezingalawuleki. Ngaphambi kokuthi kubhekwane nakho, ukufinyelela okuqondile kwesilinganiso esikhulu kugridi yamandla kuzoletha umthelela omkhulu futhi kuthinte ukusebenza okuzinzile kwegridi yamandla. . Ukwengeza izixhumanisi zesitoreji samandla kungenza ukukhiqizwa kwamandla e-photovoltaic kube ngokushelela nangokuzinza kugridi, futhi ukufinyelela ngezinga elikhulu kugridi ngeke kuthinte ukuzinza kwegridi. Futhi isitoreji samandla se-photovoltaic +, uhlelo lunobubanzi bohlelo lokusebenza olubanzi.
Uhlelo lokugcina i-Photovoltaic, kufaka phakathi amamojula welanga, izilawuli,ama-inverters, amabhethri, imithwalo nezinye izinto zokusebenza. Njengamanje, kunemizila eminingi yezobuchwepheshe, kodwa amandla adinga ukuqoqwa endaweni ethile. Njengamanje, kunezinhlobo ezimbili zama-topology: ukuhlanganisa kwe-DC "DC Coupling" kanye ne-AC coupling "AC Coupling".
1 DC ehlanganisiwe
Njengoba kuboniswe esithombeni esingezansi, amandla e-DC akhiqizwe imojula ye-photovoltaic agcinwa kuphakethe lebhethri ngesilawuli, futhi igridi ingaphinda ishaje ibhethri ngesiguquli se-DC-AC esinezinhlangothi ezimbili. Indawo okuqoqelwa kuyo amandla isekupheleni kwebhethri le-DC.
Umgomo wokusebenza we-DC coupling: lapho uhlelo lwe-photovoltaic lusebenza, isilawuli se-MPPT sisetshenziselwa ukushaja ibhethri; lapho umthwalo kagesi udingeka, ibhethri izokhulula amandla, futhi okwamanje kunqunywa umthwalo. Isistimu yokugcina amandla ixhunywe kugridi. Uma umthwalo umncane futhi ibhethri ishajwe ngokugcwele, uhlelo lwe-photovoltaic lunganikeza amandla kugridi. Uma amandla okulayisha emakhulu kunamandla we-PV, igridi ne-PV zinganikeza amandla emthwalweni ngesikhathi esifanayo. Ngenxa yokuthi ukukhiqizwa kwamandla e-photovoltaic kanye nokusetshenziswa kwamandla okulayisha akuzinzile, kuyadingeka ukuthembela ebhethri ukulinganisa amandla esistimu.
2 AC kuhlanganiswe
Njengoba kuboniswe emfanekisweni ongezansi, okwamanje okuqondile okukhiqizwa yimodyuli ye-photovoltaic iguqulwa ibe yamanje eshintshanayo ngokusebenzisa i-inverter, futhi inikezwa ngokuqondile emthwalweni noma ithunyelwe kugridi. Igridi ingaphinda ishaje ibhethri ngesiguquli se-bidirectional DC-AC. Indawo yokuqoqa amandla isekupheleni kokuxhumana.
Umgomo wokusebenza wokuhlanganisa i-AC: uhlanganisa isistimu yokunikeza amandla e-photovoltaic kanye nesistimu yokuhlinzeka amandla ebhethri. Uhlelo lwe-photovoltaic luqukethe ama-photovoltaic arrays kanye nama-inverters axhunywe kugridi; isistimu yebhethri iqukethe amaphakethe ebhethri nama-inverter aqondiswa kabili. Lezi zinhlelo ezimbili zingasebenza ngokuzimela ngaphandle kokuphazamisana, noma zingahlukaniswa negridi enkulu yamandla ukuze zenze uhlelo lwegridi encane.
Kokubili i-DC coupling kanye ne-AC coupling kuyizixazululo ezivuthiwe, ngayinye inezinzuzo zayo kanye nokubi. Ngokusho kwezinhlelo zokusebenza ezahlukene, khetha isisombululo esifanele kakhulu. Okulandelayo ukuqhathanisa lezi zixazululo ezimbili.
1 ukuqhathaniswa kwezindleko
Ukuhlanganisa i-DC kuhlanganisa isilawuli, i-inverter ye-bidirectional kanye ne-switch yokudlulisa, ukuhlanganisa i-AC kuhlanganisa i-inverter exhunywe kugridi, i-inverter ye-bidirectional kanye nekhabhinethi yokusabalalisa amandla. Ngokombono wezindleko, isilawuli ishibhile kune-inverter exhunywe kugridi. Iswishi yokudlulisa nayo ishibhile kunekhabhinethi yokusabalalisa amandla. Uhlelo lokuhlanganisa lwe-DC lungenziwa futhi umshini odidiyelwe wokulawula kanye ne-inverter, ongasindisa izindleko zemishini kanye nezindleko zokufaka. Ngakho-ke, izindleko zohlelo lokuhlanganisa lwe-DC zingaphansi kancane kunezohlelo lokuhlanganisa lwe-AC.
2 Ukuqhathaniswa kokusebenza
Isistimu yokuhlanganisa ye-DC, isilawuli, ibhethri kanye ne-inverter kuxhunywe ochungechungeni, uxhumano lusondele kakhulu, kodwa ukuguquguquka akulungile. Kuhlelo lokuhlanganisa lwe-AC, i-inverter exhunywe kugridi, ibhethri yesitoreji kanye nesiguquli se-bidirectional kuyahambisana, ukuxhumana akuqinile, futhi ukuguquguquka kuhle. Isibonelo, ohlelweni lwe-photovoltaic oluvele lufakiwe, kuyadingeka ukufaka isistimu yokugcina amandla, kungcono ukusebenzisa i-AC coupling, inqobo nje uma ibhethri kanye ne-converter ye-bidirectional ifakiwe, ngeke ithinte uhlelo lokuqala lwe-photovoltaic, futhi uhlelo lokugcina amandla Ngokuyisisekelo, umklamo awunabo ubuhlobo obuqondile nesistimu ye-photovoltaic futhi inganqunywa ngokuvumelana nezidingo. Uma kuyisistimu esanda kufakwa ye-off-grid, ama-photovoltaics, amabhethri, nama-inverter kufanele aklanywe ngokuya ngamandla omthwalo womsebenzisi nokusetshenziswa kwamandla, futhi isistimu yokuhlanganisa ye-DC ifaneleka kakhulu. Nokho, amandla ohlelo lokuhlanganisa lwe-DC mancane kakhulu, ngokuvamile angaphansi kuka-500kW, futhi kungcono ukulawula isistimu enkulu ngokuhlanganisa i-AC.
3 ukuqhathanisa ngempumelelo
Ngokombono we-photovoltaic ukusetshenziswa kahle, lezi zinhlelo ezimbili zinezici zazo. Uma umsebenzisi elayisha okuningi phakathi nosuku futhi kancane ebusuku, kungcono ukusebenzisa i-AC coupling. Amamojula we-photovoltaic ahlinzeka ngokuqondile amandla kumthwalo ngokusebenzisa i-inverter exhunywe kugridi, futhi ukusebenza kahle kungafinyelela Ngaphezulu kuka-96%. Uma umthwalo womsebenzisi umncane kakhulu phakathi nosuku nangaphezulu ebusuku, futhi amandla okukhiqiza amandla e-photovoltaic adinga ukugcinwa emini futhi asetshenziswe ebusuku, kungcono ukusebenzisa i-DC coupling. Imojula ye-photovoltaic igcina ugesi ebhethri ngesilawuli, futhi ukusebenza kahle kungafinyelela ngaphezu kwama-95%. Uma kuyi-AC coupling, i-Photovoltaics kumele iqale iguqulwe ibe amandla e-AC ngesiguquli, bese iguqulelwa kumandla e-DC ngokusebenzisa isiguquli esinezinhlangothi ezimbili, futhi ukusebenza kahle kuzokwehla kufike cishe ku-90%.
I-Amensolar'sAma-inverters wesigaba sokuhlukanisa uchungechunge lwe-N3Hxisekela ukuhlangana kwe-AC futhi yakhelwe ukuthuthukisa izinhlelo zamandla elanga. Samukela abasabalalisi abaningi ukuthi bahlanganyele nathi ekukhuthazeni le mikhiqizo emisha. Uma unentshisekelo yokwandisa ukunikezwa komkhiqizo wakho nokuhlinzeka ngama-inverter ekhwalithi ephezulu kumakhasimende akho, sikumema ukuthi usebenzisane nathi futhi uzuze kubuchwepheshe obuthuthukisiwe nokuthembeka kochungechunge lwe-N3Hx. Xhumana nathi namuhla ukuze uhlole leli thuba elijabulisayo lokusebenzisana nokukhula embonini yamandla avuselelekayo.
Isikhathi sokuthumela: Feb-15-2023
