Mokhoa oa ho khetha cable e nepahetseng?

Lilemong tsa morao tjena, theknoloji eaindasteri ea photovoltaice hlahile ka potlako le ka potlako.Matla a li-modules tse le 'ngoe a fetohile a maholoanyane le a maholo,' me hona joale ea khoele e boetse e le kholoanyane le e kholoanyane.Hona joale ea li-module tsa matla a phahameng li fihlile ho feta 17A.Mabapi le moralo oa tsamaiso, tšebeliso ea likarolo tse phahameng tsa matla le sebaka se loketseng se boloketsoeng se ka fokotsa litšenyehelo tsa pele tsa lichelete le litšenyehelo tsa lihora tsa kilowatt tsa tsamaiso.Litsenyehelo tsa lithapo tsa AC le DC tsamaisong ha li tlase.Moralo le khetho li lokela ho etsoa joang ho fokotsa litšenyehelo?

1. Khetho ea lithapo tsa DC

Mohala oa DC o kenngoa ka ntle.Ka kakaretso ho kgothaletswa ho khetha lisebelisoa tse khethehileng tsa photovoltaic tse 'nileng tsa amahanngoa le mahlaseli.Ka mor'a ho khantša mahlaseli a matla a elektronike, sebopeho sa limolek'hule tsa lisebelisoa tsa lesela la li-cable li fetoha ho tloha ho linear ho ea ho tse tharo-dimensional netweke sebopeho sa limolek'hule, 'me boemo ba mocheso oa mocheso bo eketseha ho tloha ho 70 ° C ho isa ho 90 ° C, 105 ° C, 125 ° C, 135 ° C, Esita le ho fihlela ho 150 ° C, bokhoni ba hona joale ba ho jara bo phahame ka 15-50% ho feta ba likhoele tsa litlhaloso tse tšoanang.E khona ho mamella liphetoho tse matla tsa mocheso le khoholeho ea lik'hemik'hale 'me e ka sebelisoa ka ntle ka lilemo tse fetang 25.Ha u khetha lithapo tsa DC, khetha lihlahisoa ho tsoa ho baetsi ba kamehla ba nang le litifikeiti tse loketseng ho netefatsa tšebeliso ea nako e telele ea kantle.

Hona joale, e sebelisoang ka ho fetisisathapo ea photovoltaic DCke thapo ya PV1-F1*4 4 square meter.Leha ho le joalo, ka keketseho ea hona joale ea photovoltaic modules le ho eketseha ha matla a inverter e le 'ngoe, bolelele ba cable ea DC bo boetse bo eketseha.6 square metres Tšebeliso ea likhoele tsa DC le eona e ntse e eketseha.

Ho ea ka litlhaloso tse nepahetseng, ka kakaretso ho khothalletsoa hore tahlehelo ea photovoltaic DC e se ke ea feta 2%.Re sebelisa mokhoa ona ho rala mokhoa oa ho khetha lithapo tsa DC.Mohala o hanyetsanang le thapo ea PV1-F1*4mm² DC ke 4.6mΩ/mitha, 'me thapo ea mohala oa PV6mm² DC ke 3.1 mΩ/mitha, ho nka hore motlakase o sebetsang oa module oa DC ke 600V, tahlehelo ea 2% ea ho theoha ha motlakase ke 12V, ha ho nahanoa. hore mochine oa hona joale ke 13A, o sebelisa 4mm² DC cable, sebaka se pakeng tsa qetellong ea module le inverter e khothalletsoa hore e se ke ea feta 120 metres (khoele e le 'ngoe, (ntle le lipalo tse ntle le tse mpe), haeba sebaka se le seholo ho feta sena. sebaka, ho khothalletsoa ho khetha thapo ea 6mm² DC, empa ho khothaletsoa hore sebaka se pakeng tsa pheletso e hole ea karolo le inverter ha sea lokela ho feta limithara tse 170.

2. Palo ea tahlehelo ea cable ea photovoltaic

E le ho fokotsa litšenyehelo tsa tsamaiso, likarolo leli-inverters tsa liteishene tsa motlakase tsa photovoltaicha se hangata li hlophisitsoeng ka karolelano ea 1: 1.Ho e-na le hoo, litlhophiso tse ling tse feteletseng li entsoe ho latela maemo a mabone, litlhoko tsa morero, joalo-joalo. Ka mohlala, bakeng sa mojule oa 110KW le inverter ea 100KW, e baloang ho latela makhetlo a 1.1 ka lehlakoreng la AC overmatching ea inverter, boholo ba AC tlhahiso ea hona joale ke hoo e batlang e le. 158A.Mohala oa AC o ka khethoa ho latela boholo ba tlhahiso ea hona joale eamochini o kenya letsoho.Hobane ho sa tsotellehe hore na ho na le likarolo tse kae tse lokiselitsoeng, motlakase oa motlakase oa AC oa inverter o ke ke oa feta tekanyo e phahameng ea tlhahiso ea motlakase ea motlakase.

3. Inverter AC output parameters

Lithapo tsa koporo tsa AC tse sebelisoang ka tloaelo bakeng sa sistimi ea photovoltaic li kenyelletsa BVR le YJV.BVR e bolela terata ea koporo ea mantlha ea PVC e insulated flexible, YJV cross-linked polyethylene insulated power cable.Ha u khetha, ela hloko boemo ba voltage le boemo ba mocheso oa cable., ho khetha mofuta o thibelang lelakabe, litlhaloso tsa cable li hlahisoa ke palo ea li-cores, karolo ea "cross-section" le "voltage level": Kemelo ea likarolo tse le 'ngoe ea lekala, 1 * karolo ea sefapano, joalo ka: 1 * 25mm 0.6 /1kV, e bolela 25 square meter ea likhoele.Kemiso ea likarolo tse ngata tse sothehileng tsa lithapo, palo ea likhoele potolohong e le 'ngoe * ka lebitso la sefapano, joalo ka: 3*50+2*25mm 0.6/1KV, e bolelang lithapo tse tharo tse lisekoere tse 50, terata e le 'ngoe ea lisekoere tse 25. le A 25 square ground terata.