Kwiminyaka yakutshanje, iteknoloji yokuvelisa amandla e-photovoltaic iqhubele phambili ngokuxhuma kunye nemida, kwaye umthamo ofakiweyo unyuke ngokukhawuleza. Nangona kunjalo, ukuveliswa kwamandla e-photovoltaic kuneziphene ezifana nokungena kunye nokungalawuleki. Ngaphambi kokuba kujongwe, ukufikelela ngokuthe ngqo kwigridi yamandla amakhulu kuya kuzisa impembelelo enkulu kwaye kuchaphazele ukusebenza okuzinzile kwegridi yamandla. . Ukongeza amakhonkco okugcina amandla kunokwenza ukuveliswa kwamandla e-photovoltaic ngokufanelekileyo kwaye ngokuzinzile kwigridi, kwaye ukufikelela kwinqanaba elikhulu kwigridi akuyi kuchaphazela ukuzinza kwegridi. Kwaye i-photovoltaic + yokugcina amandla, inkqubo inoluhlu olubanzi lwesicelo.
Inkqubo yokugcina i-Photovoltaic, kuquka iimodyuli zelanga, abalawuli,ii-inverters, iibhetri, imithwalo kunye nezinye izixhobo. Okwangoku, kukho iindlela ezininzi zobugcisa, kodwa amandla kufuneka aqokelelwe kwindawo ethile. Okwangoku, kukho ii-topology ezimbini: i-DC coupling "DC Coupling" kunye ne-AC coupling "i-AC Coupling".
I-1 DC idityanisiwe
Njengoko kuboniswe kumzobo ongezantsi, amandla e-DC aveliswa yimodyuli ye-photovoltaic agcinwe kwibhetri yepakethe ngokusebenzisa umlawuli, kwaye igridi inokuhlawulisa ibhetri nge-bidirectional DC-AC converter. Indawo yokuqokelela amandla ikwisiphelo sebhetri yeDC.
Umgaqo wokusebenza wokudibanisa kwe-DC: xa inkqubo ye-photovoltaic isebenza, umlawuli weMPPT usetyenziselwa ukuhlawula ibhetri; xa umthwalo wombane ufunwa, ibhetri iya kukhulula amandla, kwaye okwangoku kunqunywe ngumthwalo. Inkqubo yokugcina amandla ixhunyiwe kwigridi. Ukuba umthwalo uncinci kwaye ibhetri ihlawuliswe ngokupheleleyo, inkqubo ye-photovoltaic inokunika amandla kwigridi. Xa amandla omthwalo mkhulu kune-PV amandla, igridi kunye ne-PV inokubonelela amandla kumthwalo ngexesha elifanayo. Ngenxa yokuba ukuveliswa kwamandla e-photovoltaic kunye nokusetyenziswa kwamandla okulayisha akuzinzile, kuyimfuneko ukuthembela kwibhetri ukulinganisela amandla enkqubo.
2 AC idityanisiwe
Njengoko kuboniswe kumzobo ongezantsi, umbane othe ngqo owenziwe yimodyuli ye-photovoltaic iguqulwa ibe yi-alternating current ngokusebenzisa i-inverter, kwaye ifakwe ngokuthe ngqo kumthwalo okanye ithunyelwe kwigridi. Igridi inokutshaja ibhetri nge-bidirectional DC-AC bidirectional converter. Indawo yokuqokelela amandla isekupheleni konxibelelwano.
Umgaqo osebenzayo wokudibanisa i-AC: iquka inkqubo yokubonelela umbane we-photovoltaic kunye nenkqubo yokunikezelwa kwamandla ebhetri. Inkqubo ye-photovoltaic iqukethe i-photovoltaic arrays kunye ne-inverters edibeneyo yegridi; inkqubo yebhetri iqulathe iipakethi zebhetri kunye nee-inverters ze-bidirectional. Ezi nkqubo zimbini zinokusebenza ngokuzimeleyo ngaphandle kokuphazamisana, okanye zinokwahlulwa kwigridi enkulu yamandla ukuze zenze inkqubo yegridi encinci.
Zombini i-DC coupling kunye ne-AC coupling zizisombululo ezivuthiweyo okwangoku, nganye ineengenelo zayo kunye nokungalunganga. Ngokwezicelo ezahlukeneyo, khetha esona sisombululo sifanelekileyo. Oku kulandelayo luthelekiso lwezisombululo ezibini.
1 uthelekiso lweendleko
Ukudibanisa kwe-DC kubandakanya umlawuli, inverter ye-bidirectional kunye nokutshintshwa kokutshintshwa, ukudibanisa kwe-AC kubandakanya i-inverter edibeneyo yegridi, i-inverter ye-bidirectional kunye nekhabhinethi yokusabalalisa amandla. Ukususela kumbono weendleko, umlawuli ungabizi kakhulu kune-inverter edibeneyo yegridi. Utshintshiselwano lotshintshiselwano lukwaxabiso eliphantsi kunekhabhathi yokuhambisa amandla. Iskimu sokudibanisa i-DC sinokwenziwa kwakhona kumatshini odibeneyo wokulawula kunye ne-inverter, onokugcina iindleko zezixhobo kunye neendleko zokufakela. Ke ngoko, iindleko zeskimu sokudityaniswa kwe-DC singaphantsi kancinci kuneso sikimu sokudibanisa i-AC.
2 Ukusetyenziswa kothelekiso
Inkqubo yokudibanisa i-DC, umlawuli, ibhetri kunye ne-inverter zixhunyiwe kuthotho, uxhulumaniso lusondele kakhulu, kodwa ukuguquguquka kubi. Kwinkqubo yokudibanisa i-AC, i-inverter edibeneyo yegridi, ibhetri yokugcina kunye ne-bidirectional converter ihambelana, uxhumano aluqinanga, kwaye ukuguquguquka kulungile. Ngokomzekelo, kwinkqubo ye-photovoltaic esele ifakiwe, kuyimfuneko ukufaka inkqubo yokugcina amandla, kungcono ukusebenzisa i-AC coupling, nje ukuba ibhetri kunye ne-bidirectional converter ifakwe, ayiyi kuchaphazela inkqubo ye-photovoltaic yasekuqaleni, kwaye inkqubo yokugcina amandla Ngokomgaqo, uyilo alunabudlelwane obuthe ngqo kunye nenkqubo ye-photovoltaic kwaye inokumiselwa ngokweemfuno. Ukuba yinkqubo esanda kufakwa ye-off-grid system, i-photovoltaics, iibhetri, kunye ne-inverters kufuneka ziyilwe ngokuhambelana namandla omthwalo womsebenzisi kunye nokusetyenziswa kwamandla, kunye nenkqubo yokudibanisa i-DC ifaneleke ngakumbi. Nangona kunjalo, amandla enkqubo yokudibanisa i-DC mancinci, ngokubanzi ngaphantsi kwe-500kW, kwaye kungcono ukulawula inkqubo enkulu kunye nokudibanisa kwe-AC.
3 uthelekiso olusebenzayo
Ukususela kumbono wokusetyenziswa kwe-photovoltaic ukusebenza kakuhle, ezi zicwangciso zimbini zineempawu zazo. Ukuba umsebenzisi ulayisha ngakumbi emini kwaye ngaphantsi ebusuku, kungcono ukusebenzisa i-AC coupling. Iimodyuli ze-photovoltaic zibonelela ngokuthe ngqo amandla kumthwalo ngokusebenzisa i-inverter edibeneyo yegridi, kwaye ukusebenza kakuhle kunokufikelela Ngaphezulu kwe-96%. Ukuba umthwalo womsebenzisi uncinci ngexesha lasemini nangaphezulu ebusuku, kwaye ukuveliswa kwamandla e-photovoltaic kufuneka kugcinwe emini kwaye kusetyenziswe ebusuku, kungcono ukusebenzisa i-DC coupling. Imodyuli ye-photovoltaic igcina umbane kwibhetri ngokusebenzisa umlawuli, kwaye ukusebenza kakuhle kunokufikelela ngaphezu kwe-95%. Ukuba i-AC coupling, i-Photovoltaics kufuneka iqale iguqulwe ibe ngamandla e-AC ngokusebenzisa i-inverter, ize iguqulelwe kumandla e-DC ngokusebenzisa i-bidirectional converter, kwaye ukusebenza kakuhle kuya kuhla malunga ne-90%.
Amennsolar'sI-N3Hx i-series yahlula i-inverters yesigabaUkuxhasa ukudityaniswa kwe-AC kwaye yenzelwe ukomeleza iinkqubo zamandla elanga. Samkela abasasazi abaninzi ukuba basithelele ekukhuthazeni ezi mveliso zintsha. Ukuba unomdla ekwandiseni unikezelo lwemveliso yakho kunye nokubonelela ngee-inverters ezikumgangatho ophezulu kubathengi bakho, siyakumema ukuba usebenzisane nathi kwaye uxhamle kubuchwephesha obuphambili kunye nokuthembeka kothotho lwe-N3Hx. Qhagamshelana nathi namhlanje ukuhlola eli thuba linika umdla lentsebenziswano kunye nokukhula kushishino lwamandla ahlaziyekayo.
Ixesha lokuposa: Feb-15-2023
