Ibhokisi yokulawula i-PLC yecandelo-lenqanaba lokuvala ngokukhawuleza sisixhobo esisebenzisana ne-actuator yokucima umlilo ngokukhawuleza ukwenza i-photovoltaic ye-DC yenkqubo yokuvala ngokukhawuleza, kwaye isixhobo sihambelana neKhowudi yoMbane yeSizwe yaseMelika NEC2017 & NEC2020 690.12 yokuvalwa ngokukhawuleza kwe-photovoltaic izikhululo zombane.Inkcazo ifuna ukuba inkqubo ye-photovoltaic kuzo zonke izakhiwo, kunye nesekethe ngaphaya kwe-1 inyawo (305 mm) ukusuka kwimodyuli yemodyuli ye-photovoltaic, kufuneka ihle ibe ngaphantsi kwe-30 V ngaphakathi kwemizuzwana ye-30 emva kokuqala kokuvala ngokukhawuleza;Isekethe ngaphakathi kweenyawo ezi-1 (305 mm) ukusuka kuluhlu lwemodyuli ye-PV kufuneka yehle ukuya ngaphantsi kwe-80V ngaphakathi kwemizuzwana engama-30 emva kokuqalisa kokucima ngokukhawuleza.Isekethe ngaphakathi kweenyawo ezi-1 (305 mm) ukusuka kuluhlu lwemodyuli ye-PV kufuneka yehle ibe ngaphantsi kwe-80V ngaphakathi kwemizuzwana engama-30 emva kokuqala kokucima ngokukhawuleza.
Inkqubo yokucima umlilo ngokukhawuleza inamandla azenzekelayo kunye nemisebenzi yokuvala kwakhona.Ngesiseko sokuhlangabezana neemfuno zokuvala umsebenzi okhawulezayo we-NEC2017&NEC2020 690.12, inokwandisa ukuveliswa kwamandla enkqubo yokuvelisa amandla e-photovoltaic kunye nokuphucula izinga lokuvelisa amandla.Xa amandla amakhulu aqhelekileyo kwaye akukho mfuneko yokuyeka ngokukhawuleza, inqanaba lemodyuli yokuvala ngokukhawuleza ibhokisi yokulawula i-PLC iya kuthumela umyalelo wokuvala kwi-actuator yokuvala ngokukhawuleza ngomgca wamandla we-photovoltaic ukudibanisa iphaneli nganye ye-photovoltaic;Xa amandla ombane ecinyiwe okanye ukumisa okungxamisekileyo kuqalisiwe, ibhokisi yokulawula i-PLC yecandelo-inqanaba elikhawulezayo liza kuthumela umyalelo wokuqhawula kwi-actuator yokuvala ngokukhawuleza ngomgca wamandla we-photovoltaic ukukhupha ipaneli nganye ye-photovoltaic.
Ibhokisi yokulawula i-PLC yecandelo elikhawulezayo lokuvala isixhobo sisixhobo esisetyenziswa kwiinkqubo ze-photovoltaic (PV) ukuququzelela ukuvalwa ngokukhawuleza kokusebenza kwinqanaba lecandelo.Ukuvala ngokukhawuleza kuyimfuno yokhuseleko ejoliswe ekunciphiseni umngcipheko weengozi zombane ngexesha leemeko eziphuthumayo okanye imisebenzi yokulondoloza.
Nanga amanye amanqaku aphambili malunga necandelo-lenqanaba lokuvala ngokukhawuleza ibhokisi yokulawula ye-PLC:
Injongo: Eyona njongo iphambili yecandelo-lenqanaba lokuvala ngokukhawuleza ibhokisi yokulawula ye-PLC kukuvumela ukuvalwa okukhawulezileyo ukusebenza kwinkqubo ye-PV.Ukuvalwa ngokukhawuleza kubhekiselele ekukwazini ukucima ngokukhawuleza iisekethe ze-DC zenkqubo ye-PV, ukunciphisa i-voltage kumthombo ukuya kwinqanaba elikhuselekileyo ngexesha leziganeko eziphuthumayo okanye xa kufuneka umsebenzi wokulondoloza.
I-PLC (I-Programmable Logic Controller): I-PLC yikhompyutha yedijithali esetyenziselwa ukulawula kunye nokuzenzekelayo iinkqubo ezahlukeneyo.Kumxholo webhokisi yokulawula ukuvala ngokukhawuleza, i-PLC iqeshwe ukubeka iliso kunye nokulawula ukucima ngokukhawuleza ukusebenza kwenkqubo ye-PV.Ifumana imiqondiso evela kwizixhobo zangaphandle kwaye iqalise inkqubo yokuvala.
Ibhokisi yokulawula: Ibhokisi yokulawula iqulethe ukujikeleza okuyimfuneko, amacandelo, kunye nojongano lokuphumeza umsebenzi wokuvala ngokukhawuleza.Ngokuqhelekileyo ibandakanya amagalelo okufumana iimpawu ezivela kwizixhobo zangaphandle, ezifana nabaqalisi bokuvala ngokukhawuleza okanye ukucima ukucima ngokukhawuleza, kunye neziphumo zokulawula ukuvalwa kwenkqubo ye-PV.
Ukuvalwa kweNqanaba leNqanaba: Inkqubo yokucima ngokukhawuleza kwecandelo ibandakanya ukuvalwa kwamacandelo athile okanye amacandelo enkqubo yePV, kunokuvala yonke inkqubo.Oku kuvumela abaphenduli bexesha likaxakeka okanye abasebenzi bolondolozo ukuba basebenze ngokukhuselekileyo kwiindawo ezithile ngaphandle kokuvezwa kumbane ophezulu.
Ukuthotyelwa kweeKhowudi kunye neMigangatho: Iimfuno zokuvala ngokukhawuleza zichazwe kwiikhowudi zombane kunye nemigangatho, njengeKhowudi yoMbane yeSizwe (NEC) eUnited States.Ibhokisi yokulawula i-PLC yecandelo lokuvalwa ngokukhawuleza kufuneka ihambelane nale migaqo ukuqinisekisa ukuba inkqubo ye-PV ihlangabezana neemfuno eziyimfuneko zokhuseleko.
Ukudityaniswa: Ibhokisi yolawulo ye-PLC yecandelo-lenqanaba lokuvala ngokukhawuleza idityaniswe kulawulo lwenkqubo ye-PV iyonke kunye neziseko zokubeka iliso.Inxibelelana namanye amacandelo enkqubo, njenge-inverters okanye iinkqubo zokubeka iliso, ukulungelelanisa inkqubo yokuvala ngokukhawuleza.
Kubalulekile ukubonisana nomntu oqeqeshelwe umbane okanye umyili wenkqubo yePV ukuze uqinisekise ukhetho olufanelekileyo, ufakelo, kunye nokudityaniswa kwebhokisi yokulawula iPLC ekwinqanaba lecandelo.Ukuthotyelwa kweekhowudi zombane kunye nemimiselo yendawo kufuneka ilandelwe ukuqinisekisa ukhuseleko kunye nokuthembeka kwenkqubo ye-PV.
Wamkelekile ukuba udibane nathi ngemfuno yakho ekhethekileyo kwiBhokisi yoLawulo lwe-Rapid Shutdown PLC
Ixesha lokuposa: Aug-10-2023
