1. Isizathu
Kungani inverter kwenzeka overvoltage tripping noma ukuncipha kwamandla kwenzeka?
Kungase kube esinye sezizathu ezilandelayo:
1)Igridi yangakini isivele isebenza ngaphandle kwemikhawulo yasendaweni Ejwayelekile yamandla kagesi (noma izilungiselelo zokulawula okungalungile).Isibonelo, e-Australia, i-AS 60038 icacisa ama-volts angu-230 njenge-voltage yegridi yegama ene-.+ 10%, -6% ububanzi, ngakho umkhawulo ophezulu we-253V.Uma kunjalo inkampani yangakini yeGridi inesibopho esingokomthetho sokulungisa amandla kagesi.Ngokuvamile ngokushintsha i-transformer yendawo.
2)Igridi yangakini ingaphansi komkhawulo futhi isistimu yakho sonozungezilanga, nakuba ifakwe kahle nangawo wonke amazinga, iphusha igridi yendawo ngaphezu komkhawulo wokukhubeka.Amatheminali akho okuphumayo kwesiguquli selanga axhunywe 'Ephuzwini Lokuxhumana' ngegridi ngekhebula.Le ntambo inokumelana nogesi okudala i-voltage kuyo yonke ikhebuli noma nini lapho isiguquli sithumela amandla ngokuthumela amandla kagesi kugridi.Lokhu sikubiza 'ngokunyuka kwamandla kagesi'.Lapho i-solar yakho ithumela kwamanye amazwe kuyanda ukukhuphuka kwamandla kagesi ngenxa ye-Ohm's Law (V=IR), futhi kukhuphuka ukumelana nekhebula kuyanda nokunyuka kwamandla kagesi.
Isibonelo, e-Australia, i-Australian Standard 4777.1 ithi ukuphakama kwamandla kagesi aphezulu ekufakweni kwelanga kufanele kube ngu-2% (4.6V).
Ngakho-ke ungase ube nokufakwa okuhlangabezana naleli zinga, futhi kunokwenyuka kwamandla kagesi okungu-4V ekuthumeleni ngokugcwele.Igridi yakho yasendaweni ingase ihlangabezane nezinga futhi ibe ku-252V.
Ngosuku oluhle lwelanga lapho kungekho muntu ekhaya, isistimu ithumela cishe yonke into kugridi.I-voltage iphushwa ifike ku-252V + 4V = 256V imizuzu engaphezu kwe-10 bese i-inverter ihamba.
3)Ukuphakama kwe-voltage ephezulu phakathi kwe-inverter yakho yelanga negridi kungaphezu kuka-2% ubukhulu beZinga,ngoba ukumelana nekhebula (kuhlanganise nanoma yikuphi ukuxhumana) kuphezulu kakhulu.Uma kunjalo ngabe isifaki kufanele sikutshele ukuthi ikhebula ye-AC yakho kugridi idinga ukuthuthukiswa ngaphambi kokufakwa kwelanga.
4) Inverter hardware udaba.
Uma i-voltage yeGridi elinganisiwe ihlala ingaphakathi kwebanga, kodwa isiguquli sihlala sinephutha lokukhubeka kwe-overvoltage kungakhathaliseki ukuthi ububanzi be-voltage bukhulu kangakanani, kufanele kube udaba lwe-hardware ye-inverter, kungenzeka ukuthi ama-IGBT alimele.
2. Ukuxilongwa
Hlola I-Voltage Yegridi Yakho Ukuze uhlole i-voltage yegridi yangakini, kufanele ikalwe ngenkathi isistimu yakho sonozungezilanga ivaliwe.Uma kungenjalo i-voltage oyilinganisayo izothinteka ohlelweni lwakho lwelanga, futhi awukwazi ukubeka icala kugridi!Udinga ukufakazela ukuthi i-voltage yegridi iphezulu ngaphandle kokusebenza kwesistimu yakho yelanga.Kufanele futhi ucime yonke imithwalo emikhulu endlini yakho.
Kufanele futhi ikalwe ngosuku olushisayo emini - njengoba lokhu kuzocabangela ukukhuphuka kwamandla kagesi okubangelwa yinoma yiziphi ezinye izinhlelo zelanga ezizungezile.
Okokuqala - rekhoda ukufundwa okusheshayo nge-multimeter.I-sparky yakho kufanele ithathe ukufundwa kwe-voltage esheshayo ebhodini elikhulu lokushintsha.Uma i-voltage inkulu kune-voltage elinganiselwe, thatha isithombe se-multimeter (okungcono kakhulu ngeswishi eyinhloko yokuphakela ilanga endaweni evaliwe esithombeni esifanayo) bese usithumela emnyangweni wekhwalithi yamandla wenkampani yeGridi yakho.
Okwesibili - rekhoda isilinganiso semizuzu eyi-10 nge-logger ye-voltage.I-sparky yakho idinga i-voltage logger (okungukuthi i-Fluke VR1710) futhi kufanele ilinganise iziqongo ezimaphakathi eziyimizuzu eyi-10 lapho imithwalo yakho yelanga nemikhulu icishiwe.Uma isilinganiso singaphezu kwamandla kagesi alinganiselwe bese uthumela idatha erekhodiwe kanye nesithombe sokusethwa kokulinganisa - futhi okungcono ukukhombisa ukucisha okuyinhloko kokuhlinzeka ngelanga.
Uma okunye kwalokhu kuhlola oku-2 okungenhla 'kukuhle' cindezela inkampani yakho yeGridi ukuthi ilungise amazinga kagesi wangakini.
Qinisekisa ukwehla kwamandla kagesi ekufakeni kwakho
Uma izibalo zibonisa ukwenyuka kukagesi okungaphezu kuka-2% kuzomele uthuthukise ikhebula ye-AC ukusuka ku-inverter yakho iye endaweni yokuxhumanisa igridi ukuze izintambo zikhuluphele (izintambo ezikhuluphele = ukumelana okuphansi).
Isinyathelo Sokugcina - linganisa ukuphakama kwe-voltage
1. Uma i-voltage yegridi yakho ILUNGILE futhi izibalo zokukhuphuka kwamandla kagesi zingaphansi kuka-2% lapho i-sparky yakho idinga ukukala inkinga ukuze kuqinisekiswe izibalo zokukhuphuka kwamandla kagesi:
2. Uma i-PV icishiwe, nawo wonke amanye amasekhethi okulayisha avaliwe, linganisa i-voltage yokungalayishi ekushintsheni okukhulu.
3. Faka umthamo owodwa owaziwayo ophikisayo, isb. i-heater noma ihhavini/ama-hotplates bese ukala umthamo wamanje ezintweni ezisebenzayo, ezingathathi hlangothi nomhlaba kanye namandla kagesi okulayisha ekushintsheni okukhulu.
4. Kulokhu ungakwazi ukubala ukwehla / ukukhuphuka kwe-voltage ku-main yomthengi engenayo kanye nensizakalo eyinhloko.
5. Bala ukuphikiswa kwe-AC komugqa ngoMthetho ka-Ohm ukuze uthole izinto ezifana namajoyinti amabi noma ukungathathi hlangothi okuphukile.
3. Isiphetho
Izinyathelo Ezilandelayo
Manje kufanele wazi ukuthi yini inkinga yakho.
Uma kuyinkinga #1- I-grid voltage iphezulu kakhulu- ke leyo yinkinga yenkampani yakho yeGridi.Uma ubathumelela bonke ubufakazi engibuphakamisile bazophoqeleka ukuthi babulungise.
Uma kuyinkinga #2- Igridi ILUNGILE, ukukhuphuka kwamandla kagesi kungaphansi kuka-2%, kodwa isahamba futhi izinketho zakho yilezi:
1. Kuye ngenkampani yakho yeGridi ungase uvunyelwe ukushintsha umkhawulo wohambo lwe-voltage ophakathi kwemizuzu eyi-10 ube senani elivunyelwe (noma uma unenhlanhla enkulu nakakhulu).Thola inhlansi yakho ukuze uhlole Inkampani Yegridi uma uvunyelwe ukwenza lokhu.
2. Uma isiguquli sakho sinemodi ethi “Volt/Var” (eziningi zesimanje zinjalo) – bese ucela isifaki sakho ukuthi sivumele le modi ngamaphoyinti asethiwe atuswe inkampani yangakini yeGridi – lokhu kunganciphisa inani nokuqina kokuhlehla kwamandla kagesi.
3. Uma lokho kungenakwenzeka ngaleso sikhathi, uma une-3 ukunikezwa kwesigaba, ukuthuthukela ku-inverter yesigaba se-3 ngokuvamile kuxazulula inkinga - njengoba ukuphakama kwe-voltage kusakazwa ngezigaba ezi-3.
4. Uma kungenjalo ubheke ukuthuthukisa izintambo zakho ze-AC kugridi noma ukukhawulela amandla okuthekelisa esistimu yakho sonozungezilanga.
Uma kuyinkinga #3- i-voltage enkulu ikhuphuke ngaphezu kuka-2% - khona-ke uma kuwukufakwa kwakamuva kubukeka sengathi isifaki sakho asikafaki isistimu ku-Standard.Kufanele ukhulume nabo futhi nithole isisombululo.Cishe izobandakanya ukuthuthukisa ikhebula ye-AC kugridi (sebenzisa izintambo ezikhuluphele noma unciphise ikhebula phakathi kwe-inverter nendawo yokuxhuma Igridi).
Uma kuyinkinga #4- Inkinga ye-inverter hardware.Shayela usekelo lobuchwepheshe ukuze unikeze ngokumiselela.