1. Yini i-Island Phenomenon ku-Grid-Tied PV Systems?
Incazelo
Isenzakalo se-islanding senzeka kumasistimu we-grid-tied photovoltaic (PV) lapho igridi ihlangabezana nokunqamuka kukagesi, kodwa isistimu ye-PV iyaqhubeka nokuhlinzeka amandla emithwalweni exhunyiwe. Lokhu kudala “isiqhingi” esisendaweni sasendaweni sokuphehla ugesi.
Izingozi ze-Island
- Izingozi Zokuphepha: Ingozi kubasebenzi bezinsiza ezilungisa igridi.
- Ukulimala Kwezisetshenziswa: Izingxenye zikagesi zingase zingasebenzi kahle ngenxa ye-voltage engazinzile kanye nemvamisa.
- Ukungaqini Kwegridi: Iziqhingi ezingalawulwa zingaphazamisa ukusebenza okuvumelanisiwe kwegridi enkulu.
2. Izici Eziyinhloko kanye Nemingcele Yeziguquli Ezifanelekayo
Izici ezibalulekile zama-Inverters
- I-Anti-Islanding Protection: Isebenzisa izindlela zokuthola ezisebenzayo nezingenzi lutho ukuze ivale ngokushesha phakathi nokuhluleka kwegridi.
- I-MPPT Esebenzayo (Ukulandelela Iphoyinti Lamandla Okukhulu): Khulisa ukuguqulwa kwamandla kusuka kumaphaneli e-PV.
- Ukuguqulwa Okuphezulu Ngempumelelo: Ngokujwayelekile >95% ukunciphisa ukulahleka kwamandla.
- Ukuxhumana Okuhlakaniphile: Isekela amaphrothokholi afana ne-RS485, Wi-Fi, noma i-Ethernet ukuze iqashwe.
- Ukuphathwa kwesilawuli kude: Ivumela ukuqapha nokulawula uhlelo ukude.
Imingcele Yezobuchwepheshe Ebalulekile
| Ipharamitha | Ububanzi obunconyiwe |
|---|---|
| Ibanga lamandla okukhiphayo | 5kW – 100kW |
| I-Voltage/Frequency yokuphumayo | 230V/50Hz noma 400V/60Hz |
| Isilinganiso Sokuvikela | IP65 noma ngaphezulu |
| Ukuhlanekezela okuphelele kwe-Harmonic | <3% |
Ithebula lokuqhathanisa
| Isici | I-Inverter A | I-Inverter B | I-Inverter C |
| Ukusebenza kahle | 97% | 96% | 95% |
| Iziteshi ze-MPPT | 2 | 3 | 1 |
| Isilinganiso Sokuvikela | IP66 | IP65 | IP67 |
| Impendulo Ephikisana Neziqhingi | <2 imizuzwana | <3 imizuzwana | <2 imizuzwana |
3. Ukuxhumana Phakathi Kokukhethwa Kwekhebula le-PV kanye Nokuvimbela Isiqhingi
Ukubaluleka kwezintambo ze-PV
Izintambo zekhwalithi ephezulu ze-PV zidlala indima ebalulekile ekugcineni ukuzinza kwesistimu nokuqinisekisa ukutholwa okunembile kwezimo zegridi, okubalulekile ezindleleni zokulwa nokuhlehla kweziqhingi.
- Ukudluliswa kwamandla okusebenzayo: Yehlisa ukwehla kwamandla kagesi kanye nokulahleka kwamandla, iqinisekisa ukugeleza kwamandla okungaguquki ku-inverter.
- Ukunemba Kwesiginali: Yehlisa umsindo kagesi nokuhluka kokuphazamiseka, ithuthukisa ikhono le-inverter ukuthola ukwehluleka kwegridi.
- Ukuqina: Iqinisekisa ukwethembeka kwesikhathi eside ezimweni ezihlukahlukene zemvelo, igcina ukusebenza okuzinzile.
4. KunconyiweAmakhebula e-PV Wezinhlelo Eziboshelwe Igridi
Izinketho eziphezulu zekhebula le-PV
- EN H1Z2Z2-K
- Izici: Intuthu ephansi, i-halogen-free, ukumelana nesimo sezulu esiphezulu.
- Ukuhambisana: Ihlangabezana namazinga e-IEC 62930.
- Izinhlelo zokusebenza: Izinhlelo ze-PV ezibekwe phansi kanye nophahla.
- I-TUV PV1-F
- Izici: Ukumelana nokushisa okuhle kakhulu (-40 ° C kuya ku- +90 ° C).
- Ukuhambisana: Isitifiketi se-TÜV samazinga aphezulu okuphepha.
- Izinhlelo zokusebenza: Amasistimu e-PV asabalalisiwe kanye ne-agrivoltaics.
- Izintambo ze-PV ezihlomile
- Izici: Ukuvikelwa kwemishini okuthuthukisiwe nokuqina.
- Ukuhambisana: Ihlangabezana namazinga e-IEC 62930 kanye ne-EN 60228.
- Izinhlelo zokusebenza: Izinhlelo ze-PV zesikali sezimboni kanye nezindawo ezinokhahlo.
Ithebula lokuqhathanisa lepharamitha
| Imodeli Yekhebula | Izinga Lokushisa | Izitifiketi | Izinhlelo zokusebenza |
| EN H1Z2Z2-K | -40°C kuya +90°C | I-IEC 62930 | Uphahla kanye nezinhlelo ze-PV ezisetshenziswayo |
| I-TUV PV1-F | -40°C kuya +90°C | I-TÜV iqinisekisiwe | Amasistimu asabalalisiwe kanye nama-hybrid |
| Ikhebula le-PV elihlomile | -40°C kuya +125°C | I-IEC 62930, EN 60228 | Ukufakwa kwe-PV yezimboni |
I-Danyang Winpower Wire neCable Mfg Co., Ltd.
Umkhiqizi wempahla kagesi kanye nempahla, imikhiqizo eyinhloko ihlanganisa izintambo zikagesi, amahhanisi ezintambo kanye nezixhumi zikagesi. Kusetshenziswa kumasistimu asekhaya ahlakaniphile, amasistimu e-photovoltaic, amasistimu okugcina amandla, nezinhlelo zezimoto zikagesi
Isiphetho Nezincomo
- Ukuqonda Islanding: I-Islanding ibeka engcupheni enkulu ekuphepheni, okokusebenza, nasekuzinzeni kwegridi, okudinga izinyathelo zokuvimbela ezisebenzayo.
- Ukukhetha i-Inverter efanele: Khetha ama-inverters anokuvikela okulwa nesiqhingi, ukusebenza kahle okuphezulu, namandla okuxhumana aqinile.
- Ukubeka Eqhulwini Amakhebuli Asezingeni: Khetha izintambo ze-PV ezinokuqina okuphezulu, i-impedance ephansi, nokusebenza okuthembekile ukuze uqinisekise ukuzinza kwesistimu.
- Isondlo Esivamile: Ukuhlolwa ngezikhathi ezithile kohlelo lwe-PV, okuhlanganisa ama-inverter namakhebuli, kubalulekile ekuthembekeni kwesikhathi eside.
Ngokukhetha ngokucophelela izingxenye ezifanele nokugcina isistimu, ukufakwa kwe-PV eboshwe ngegridi kungafinyelela ukusebenza okuhle nokuphepha kuyilapho kubambelela ezindinganisweni zomkhakha.
Isikhathi sokuthumela: Dec-24-2024