1. Isizathu
Kutheni i-inverter isenzeka ukukhubeka ngaphezulu kwe-voltage okanye ukuncipha kwamandla kwenzeka?
Isenokuba sesinye sezi zizathu zilandelayo:
1)Igridi yakho yasekhaya sele isebenza ngaphandle kwemida yoMgangatho wamandla ombane yasekhaya (okanye useto olungalunganga lommiselo).Umzekelo, eOstreliya, i-AS 60038 ikhankanya i-230 volts njengombane oqhelekileyo wegridi ene-.+ 10%, -6% uluhlu, ngoko umda ophezulu we-253V.Ukuba oku kunjalo inkampani yeGridi yendawo yakho inesibophelelo esisemthethweni sokulungisa amandla ombane.Ngokuqhelekileyo ngokuguqula i-transformer yendawo.
2)Igridi yakho yasekhaya ingaphantsi komda kwaye inkqubo yakho yelanga, nangona ifakwe ngokuchanekileyo kunye nayo yonke imigangatho, ityhala igridi yendawo ngaphaya komda wokuhamba.Iitheminali zemveliso yesolar yakho ziqhagamshelwe 'kwiNdawo yoQhagamshelwano' ngegridi ngentambo.Le ntambo inokumelana nombane eyenza i-voltage kwintambo nanini na xa i-inverter ithumela ngaphandle amandla ngokuthumela umbane okhoyo kwigridi.Oku sikubiza 'kukunyuka kwevoltage'.Okukhona isola yakho ithumela kumazwe angaphandle kokukhona ukonyuka kwamandla ombane mkhulu ngenxa yoMthetho we-Ohm (V=IR), kwaye okukhona uphezulu ukuxhathisa kwekhebhuli kokukhona ukonyuka kwamandla ombane kuya kuba mkhulu.
Ngokomzekelo, e-Australia, i-Australian Standard 4777.1 ithi ukunyuka kwamandla ombane aphezulu kufakelo lwelanga kufuneka kube yi-2% (4.6V).
Ke unokuba nofakelo oludibana nalo mgangatho, kwaye unokuphakama kombane we-4V ekuthunyelweni okupheleleyo.Igridi yakho yasekhaya inokuhlangabezana nomgangatho kwaye ibe kwi-252V.
Ngomhla olungileyo welanga xa kungekho mntu usekhaya, inkqubo ithumela ngaphandle phantse yonke into kwigridi.Umbane utyhalwa ukuya kuthi ga kwi-252V + 4V = 256V ngaphezulu kwemizuzu eyi-10 kunye nohambo lwe-inverter.
3)Ukuphakama kwamandla ombane phakathi kwe-inverter yakho yelanga kunye negridi ingaphezulu kwe-2% ephezulu kuMgangatho,kuba ukuxhathisa kwikhebula (kubandakanywa naluphi na uxhulumaniso) luphezulu kakhulu.Ukuba oku kunjalo ke isifakeli bekufanele ukuba sikuxelele ukuba i-AC cabling yakho kwigridi ifuna ukuphuculwa phambi kokuba kufakwe ilanga.
4) Umba we-hardware ye-inverter.
Ukuba i-voltage yeGridi elinganisiweyo isoloko ingaphakathi kuluhlu, kodwa i-inverter ihlala inempazamo yokukhwela ngaphezulu kwe-overvoltage nokuba ibanzi kangakanani na i-voltage, kufuneka ibe ngumba we-hardware we-inverter, inokuba i-IGBT yonakele.
2. Ukuxilongwa
Vavanya iVolthage yeGridi yakho Ukuvavanya amandla ombane egridi yakho yasekhaya, kufuneka ilinganiswe ngelixa isixokelelwano sakho selanga sicinywa.Ngaphandle koko i-voltage oyilinganisayo iya kuchaphazeleka sisixokelelwano sakho selanga, kwaye awukwazi ukubeka ityala kwigridi!Kuya kufuneka ubonakalise ukuba amandla ombane egridi aphezulu ngaphandle kokusebenza kwenkqubo yakho yelanga.Kuya kufuneka kwakhona ucime yonke imithwalo emikhulu endlwini yakho.
Kufuneka kwakhona ilinganiswe ngemini enelanga emini emaqanda - njengoko oku kuya kuthathela ingqalelo ukunyuka kombane okubangelwa zizo naziphi na ezinye iinkqubo zelanga ezikujikelezile.
Okokuqala - bhala ukufundwa kwangoko nge-multimeter.I-sparky yakho kufuneka ithathe ukufundwa kwamandla ombane ngoko nangoko kwibhodi yokutshintsha engundoqo.Ukuba amandla ombane mkhulu kunombane oqingqiweyo, emva koko thatha ifoto ye-multimeter (ngokukhethekileyo kunye nesitshixo esingundoqo sobonelelo lwelanga kwindawo ecinyiweyo kwifoto efanayo) kwaye uyithumele kwisebe lomgangatho wamandla wenkampani yeGridi yakho.
Okwesibini - bhala umyinge wemizuzu eyi-10 kunye ne-voltage logger.Intlantsi yakho ifuna isixhobo sokugawulwa kwamandla ombane (okt Fluke VR1710) kwaye kufuneka ilinganise i-10 min encochoyi yeavareji yokuphakama kwelanga kunye nemithwalo yakho emikhulu icinyiwe.Ukuba i-avareji ingaphezulu kwe-voltage eqingqiweyo kwaye uthumele idatha erekhodiweyo kunye nomfanekiso wokuseta umlinganiselo - kwakhona ngokufanelekileyo ubonisa umbane oyintloko wokubonelela ngelanga.
Ukuba olunye kolu vavanyo lu-2 lungasentla 'lulungile' ngoko cinezela inkampani yeGridi yakho ukuba ilungise amanqanaba ombane wendawo yakho.
Qinisekisa ukuhla kwamandla ombane kufakelo lwakho
Ukuba izibalo zibonisa ukunyuka kombane ongaphezulu kwe-2% ngoko kuya kufuneka uphucule i-AC cabling ukusuka kwi-inverter yakho ukuya kwiNdawo yoQhagamshelwano lwegridi ukuze iingcingo zityebe (iingcingo ezityebileyo = ukuxhathisa okuphantsi).
Inyathelo lokugqibela - ukulinganisa ukunyuka kombane
1. Ukuba amandla ombane egridi yakho alungile kwaye izibalo zokunyuka kwamandla ombane zingaphantsi kwe-2% ngoko ke i-sparky yakho kufuneka ilinganise ingxaki ukuqinisekisa ukubalwa kokunyuka kwamandla ombane:
2. Xa i-PV icinyiwe, kunye nazo zonke ezinye iisekethe zomthwalo zicinyiwe, yenza umlinganiselo wombane wokungathwali mthwalo kwisitshixo esikhulu.
3. Faka umthamo omnye owaziwayo wokuxhathisa, umz. isifudumezi okanye i-oveni/iihotplates kwaye ulinganise umzobo wangoku kwizinto ezisebenzayo, ezingathathi hlangothi kunye nomhlaba kunye nombane wombane wokubonelela ngomthwalo kwisitshixo esikhulu.
4. Kule nto unako ukubala ukuhla kwe-voltage / ukunyuka kumthengi ongenayo kunye nenkonzo engundoqo.
5. Bala umgca we-AC ukuchasana ngoMthetho we-Ohm ukuze uthabathe kwizinto ezifana namalungu amabi okanye ukungathathi hlangothi okuphukileyo.
3. Isiphelo
Amanyathelo Alandelayo
Ngoku kufuneka uyazi ukuba yintoni ingxaki yakho.
Ukuba yingxaki #1-Igridi yombane iphezulu kakhulu- ke leyo yingxaki yenkampani yeGridi yakho.Ukuba ubathumelela bonke ubungqina endibucebisile baya kunyanzeleka ukuba bayilungise.
Ukuba yingxaki #2-Igridi ilungile, ukunyuka kombane kungaphantsi kwe-2%, kodwa isahamba emva koko ukhetho lwakho lu:
1. Kuxhomekeka kwinkampani yakho yeGridi unokuvunyelwa ukuba utshintshe i-inverter yemizuzu eli-10 ephakathi komyinge wohambo lwamandla ombane kwixabiso elivumelekileyo (okanye ukuba unethamsanqa kakhulu nangaphezulu).Fumana i-sparky yakho ukujonga kwiNkampani yeGridi ukuba uvumelekile ukwenza oku.
2. Ukuba i-inverter yakho inemodi ye-"Volt / Var" (ininzi yanamhlanje) - ke cela i-installer yakho ukuba isebenze le modi kunye neendawo ezicwangcisiweyo ezicetyiswa yinkampani yakho yeGridi yendawo - oku kunokunciphisa inani kunye nobukhulu bokuhamba kwe-voltage.
3. Ukuba oko akunakwenzeka ngoko, ukuba unama-3 ukunikezelwa kwesigaba, ukuphuculwa kwi-inverter yesigaba se-3 ngokuqhelekileyo kusombulula umcimbi - njengoko ukunyuka kwe-voltage kusasazeka kwizigaba ezi-3.
4. Kungenjalo ujonge ekuphuculeni iintambo zakho ze-AC kwigridi okanye ukunciphisa amandla okuthumela ngaphandle kwesixokelelwano sakho selanga.
Ukuba yingxaki #3- Ubuninzi bombane bonyuka ngaphezu kwe-2% - ke ukuba lufakelo lwamva nje kubonakala ngathi isifakeli sakho asifakanga sistim kuMgangatho.Kufuneka uthethe nabo uze wenze isisombululo.Oku kunokwenzeka ukuba kubandakanye ukuphuculwa kwe-AC cabling kwigridi (sebenzisa iingcingo ezityebileyo okanye unciphise intambo phakathi kwe-inverter kunye nendawo yoqhagamshelo lweGridi).
Ukuba yingxaki #4-Ingxaki ye-Inverter hardware.Fowunela inkxaso yezobuchwephesha ukunikezela ngotshintsho.