1. Yintoni i-Islanding Phenomenon kwi-Grid-Tied PV Systems?
Ingcaciso
Isiganeko se-islanding senzeka kwiinkqubo ze-grid-tied photovoltaic (PV) xa igridi ifumana ukuphuma kombane, kodwa inkqubo ye-PV iyaqhubeka nokubonelela amandla kwimithwalo edibeneyo. Oku kudala "isiqithi" sasekhaya sokuvelisa amandla.
Iingozi ze-Islanding
- Iingozi zoKhuseleko: Umngcipheko kubasebenzi benkonzo yokulungisa igridi.
- Ukonakala kweZixhobo: Amalungu ombane anokungasebenzi kakuhle ngenxa yombane ongazinzanga kunye namaxesha.
- Ukungazinzi kwegridi: Iziqithi ezingalawulwayo zinokuphazamisa ukusebenza okuhambelanayo kwegridi enkulu.
2. Iimpawu eziphambili kunye neeParameters ze-Inverters ezifanelekileyo
Iimpawu ezibalulekileyo zee-Inverters
- Ukhuseleko lwe-Anti-Islanding: Isebenzisa iindlela zokubona ezisebenzayo nezingazenziyo ukuvala ngokukhawuleza ngexesha lokusilela kwegridi.
- IMPPT Esebenzayo (Ubona Ubona Ubonelelo LweNqanaba laMandla): Yenyusa uguqulo lwamandla kwiiphaneli zePV.
- Uguqulo oluSebenzayo oluPhezulu: Ngokuqhelekileyo > 95% ukunciphisa ilahleko yamandla.
- Unxibelelwano oluhlakaniphile: Ixhasa iiprothokholi ezifana ne-RS485, Wi-Fi, okanye i-Ethernet yokubeka iliso.
- Ulawulo olukude: Ivumela ukubeka iliso kunye nolawulo lwenkqubo ukude.
IiParameters ezingundoqo zobuGcisa
| Ipharamitha | Uluhlu olucetyiswayo |
|---|---|
| Uluhlu lwamandla okuphumayo | 5kW – 100kW |
| Imveliso yeVoltage/Frequency | 230V/50Hz okanye 400V/60Hz |
| Umgangatho woKhuseleko | IP65 okanye ngaphezulu |
| Ukugqwesa ngokupheleleyo kweHarmonic | <3% |
Itheyibhile yokuthelekisa
| Uphawu | Inverter A | I-Inverter B | I-Inverter C |
| Ukusebenza kakuhle | 97% | 96% | 95% |
| Iitshaneli zeMPPT | 2 | 3 | 1 |
| Umgangatho woKhuseleko | IP66 | IP65 | IP67 |
| I-Anti-Islanding impendulo | <2 imizuzwana | <3 imizuzwana | <2 imizuzwana |
3. UQhagamshelwano phakathi kokuKhethwa kweCable yePV kunye noThintelo lwe-Islanding
Ukubaluleka kweeCables zePV
Iintambo ze-PV ezikumgangatho ophezulu zidlala indima ebalulekileyo ekugcineni uzinzo lwenkqubo kunye nokuqinisekisa ukufunyanwa ngokuchanekileyo kweemeko zegridi, ezibaluleke kakhulu kwiindlela zokulwa ne-islanding.
- UThutho lwaMandla olusebenzayo: Yehlisa ukuhla kwamandla ombane kunye nokulahleka kwamandla, iqinisekisa ukuhamba kwamandla okungaguqukiyo kwi-inverter.
- Ukuchaneka koMqondiso: Ukunciphisa ingxolo yombane kunye nokwahluka kwe-impedance, ukuphucula ukukwazi kwe-inverter ukubona ukusilela kwegridi.
- Ukuqina: Ukuqinisekisa ukuthembeka kwexesha elide kwiimeko ezahlukeneyo zokusingqongileyo, ukugcina ukusebenza okuzinzileyo.
4. KucetyiswaIiCables ze-PV zeeNkqubo ze-Grid-Tied
Iinketho eziphezulu zePV Cable
- EN H1Z2Z2-K
- Iimbonakalo: Umsi ophantsi, i-halogen-free, ukumelana nemozulu ephezulu.
- Ukuthobela: Idibana nemigangatho ye-IEC 62930.
- Usetyenziso: Iinkqubo zePV ezibekwe phantsi kunye nophahla.
- TUV PV1-F
- Iimbonakalo: Ukumelana nobushushu obugqwesileyo (-40 ° C ukuya + 90 ° C).
- Ukuthobela: Isiqinisekiso seTÜV semigangatho ephezulu yokhuseleko.
- Usetyenziso: Iinkqubo ze-PV ezisasazwayo kunye ne-agrivoltaics.
- IiCables zePV ezixhobileyo
- Iimbonakalo: Ukukhuselwa komatshini kunye nokuqina.
- Ukuthobela: Idibana nemigangatho ye-IEC 62930 kunye ne-EN 60228.
- Usetyenziso: Iinkqubo ze-PV ze-Industrial-scale kunye neendawo ezingqongileyo ezinzima.
Itheyibhile yokuthelekisa iParameter
| Umzekelo weCable | Uluhlu lobushushu | Iziqinisekiso | Usetyenziso |
| EN H1Z2Z2-K | -40°C ukuya +90°C | IEC 62930 | Uphahla kunye neenkqubo zePV eziluncedo |
| TUV PV1-F | -40°C ukuya +90°C | TÜV Uqinisekisiweyo | Iinkqubo ezisasazwayo kunye nezixubeneyo |
| Intambo yePV exhobileyo | -40°C ukuya +125°C | IEC 62930, EN 60228 | Ufakelo lwePV yoShishino |
I-Danyang Winpower Wire kunye neCable Mfg Co., Ltd.
Umenzi wezixhobo zombane kunye nezibonelelo, iimveliso eziphambili ziquka iintambo zombane, iintambo zokubopha kunye nezihlanganisi zombane. Isetyenziswa kwiinkqubo zasekhaya ezihlakaniphile, iinkqubo ze-photovoltaic, iinkqubo zokugcina amandla, kunye neenkqubo zezithuthi zombane
Isiphelo kunye neeNgcebiso
- Ukuqonda Islanding: I-Islanding ibeka imingcipheko ebalulekileyo kukhuseleko, izixhobo, kunye nozinzo lwegridi, oko kufuna amanyathelo asebenzayo okuthintela.
- Ukukhetha i-Inverter eLungileyo: Khetha ii-inverters ezinokhuseleko oluchasene nesiqithi, ukusebenza kakuhle okuphezulu, kunye nezakhono zonxibelelwano eziqinileyo.
- Ukubeka phambili iiCables ezisemgangathweni: Khetha iintambo ze-PV ezinokuqina okuphezulu, i-impedance ephantsi, kunye nokusebenza okuthembekileyo ukuqinisekisa ukuzinza kwenkqubo.
- ULondolozo lwarhoqo: Ukuhlolwa kwexesha le-PV, kubandakanywa ii-inverters kunye neentambo, zibalulekile ekuthembekeni kwexesha elide.
Ngokukhetha ngononophelo amacandelo afanelekileyo kunye nokugcina inkqubo, ufakelo lwe-PV oludityanisiweyo lwegridi lunokufezekisa ukusebenza ngokugqibeleleyo kunye nokhuseleko ngelixa unamathela kwimigangatho yoshishino.
Ixesha lokuposa: Dec-24-2024