Ukuthuthukisa Ukusebenza Kahle Ngokusebenzisa i-BESS kanye ne-Solar Power Coupling

Impendulo Esheshayo

Ukubhanqa isitoreji samandla ebhethri (i-BESS) namandla elanga asendaweni kuyindlela ephumelela kakhulu yokwakha indawo yokushaja yesimanje ye-EV ngoba ihlasela ukulahlekelwa kuzo zonke izinyathelo zochungechunge lwamandla. Amaphaneli elanga aguqula ukukhanya kwelanga kube yi-DC ngokusebenza kahle kwemojula engu-20-24%; uhlelo lokulandelela amaphuzu amandla aphezulu (i-MPPT) lubuyisa lokho okuzomosha umbala nokungafani; futhi ibhethri lihlukanisa ukukhiqizwa kokushaja ngenxa yesidingo sokushaja ukuze kungabikho i-kilowatt-hora ethunyelwa ngaphandle ngamanani athengiswayo noma incishiswe. Uhlelo lwe-PV+BESS oluhlanganiswe kahle luvame ukuphakamisa inani lokukhiqizwa kwelanga ngo-30-50% uma kuqhathaniswa ne-PV kuphela, lunciphisa ukuthengwa kwamandla egridi ngo-40-70%, futhi luvumela ukusebenza kwe-zero-emission ngempela ngesikhathi samahora asemini. Lo mhlahlandlela uchaza indlela yokulinganisa, ukuhlanganisa, nokusebenzisa ilanga kanye nesitoreji ukuze kube nokusebenza kahle kakhulu kohambo oluya nokubuya.

Izinto Ezibalulekile Okufanele Uzicabangele

• Ukuhlanganiswa kwe-DC kwe-PV ne-BESS kugwema ukulahlekelwa ukuguqulwa okuphindwe kabili, kuthuthukisa ukusebenza kahle kohlelo ngamaphuzu angu-2-4 wamaphesenti.
• Ibhethri limunca ukuqhuma okukhulu kwelanga bese liyishintsha isikhathi liye eziqongweni zokushaja, lisuse ukuncishiswa kanye nokuthunyelwa kwamanye amazwe ngenani eliphansi.
• Amamojula e-MPPT anamazinga aphezulu kagesi athola u-5–10% wokukhishwa kwe-PV okulahlekile ngenxa yokufiphaza okungaphelele kanye nokungafani kwamaphaneli.
• Usayizi ofanele webhethri kusuka elangeni kuya elangeni kugcina isitoreji sijikeleza izikhathi ezingu-1-1.5 ngosuku, okuvikela impilo yomjikelezo kanye nomnotho.
• Ama-hub e-BESS asebenza ngamandla elanga angasebenza njengeziqhingi ezingenayo igesi ekhishwayo, asuse ama-generator kadizili ezindaweni ezikude nezivinjelwe yigridi.

Kungani i-PV + i-BESS iyi-Pairing Esebenza Kakhulu

Ukukhiqizwa kwelanga kanye nesidingo sokushaja kwe-EV ngokwemvelo akuhlelekile kahle. Ilanga liphezulu emini, kodwa isidingo sokushaja siphezulu ekuseni kanye nasefasiteleni eliqala ntambama kuze kube kusihlwa. Indawo ye-PV kuphela ibhekene nokukhetha okungathandeki: ukuthumela ngaphandle insalela yasemini ngamanani athengiswa ngobuningi, noma ukuyinciphisa ngokuphelele. I-BESS isusa ukukhetha—ibhethri limunca insalela bese liyikhipha lapho nje amashaja eyidinga.

Inzuzo yokusebenza kahle inezingxenye ezintathu:

1. Inzuzo yokusebenzisa: wonke ama-kilowatt-hora elanga asetshenziswa endaweni yokuthengisa noma ngentengo yentela esikhundleni sokuthunyelwa kwamanye amazwe ngentengo yokuthengiswa ngobuningi noma ukunqunywa. Lokhu ngokuvamile kubiza imali engenayo engaphezulu ngo-30-50% nge-kWh ekhiqizwayo. 2.Inzuzo yokuguqulwa: kusakhiwo esihlanganiswe yi-DC, i-solar DC igeleza ngqo ebhasini le-DC lebhethri noma ebhasini le-DC leshaja, igwema ukuhamba nokubuya kwe-AC. Ukususa ukuguqulwa kwe-inverter okubili kubuyisa amaphuzu angu-2-4% okusebenza kahle kwesistimu. 3.Inzuzo yesidingo segridi: isayithi lingenisa okuncane kusuka kugridi, kanti okunye ukungenisa kwalo kuthambile, kunciphisa kokubili izindleko zamandla kanye nezindleko zokufunwa.

Kumqhubi oqhathanisa ihabhu le-PV+BESS nendawo yokushaja okusheshayo yegridi kuphela, izindleko ezilinganisiwe zamandla alethwayo zesistimu ehlanganisiwe zivame ukuba ngaphansi ngo-20-35% eminyakeni eyishumi ezayo.

Ukugeleza Kwamandla: Kusukela Kuphaneli Kuya Ebhethri Kuya Emotweni

Ukuqonda ukwakheka kokuhlanganisa kucacisa ukuthi ukusebenza kahle kunqotshwa noma kulahleka kuphi. Kunezinhlobo ezimbili eziyinhloko ze-topology:

Ukuxhumanisa kwe-AC— Ama-inverter e-PV ondla ibhasi le-AC; i-inverter yebhethri ehlukile ishaja ibhethri. Amandla alula futhi ajwayelekile, kodwa elanga alahlekelwa yi-PV-inverter, bese kuba ukulahlekelwa yi-battery-inverter: ukusebenza kahle kokubuyela emuva okungaba ngu-85-88%.

Ukuhlanganiswa kwe-DC— Ama-PV arrays axhuma ebhasini le-DC lebhethri nge-MPPT converter; i-PCS eyodwa ephakathi iphatha ukushintshaniswa kwegridi. Amandla elanga angena ebhethri ngokuguqulwa okukodwa, futhi ukusebenza kahle kokubuyela nokubuya kuthuthuka cishe ku-90–93%. Uma amashaja ekwazi ukudonsa i-DC ngqo ebhasini elihlanganyelwe, okunye ukuguqulwa kuyasuswa.

Umklamo ohlanganiswe yi-DC yingakho imikhiqizo ye-solar-BESS ehlanganisiwe iwina ukuthunyelwa kwezentengiselwano. Umehluko wokusebenza kahle uhlangana nsuku zonke: ekuvunweni kwelanga okungu-1 MWh nsuku zonke, amaphuzu angu-3-5% okulahlekelwa kokuguqulwa okulondoloziwe angama-30-50 kWh ngosuku—cishe ama-MWH angu-11-18 ngonyaka wamandla atholakalayo.

Isiteshi sokushaja se-BESS EV sesimanje [esingu-200 kWh solar BESS EV] (https://www.midapower.com/news/200kwh-solar-bess-ev-charging-station-for-zero-emission-sites/) sibonisa uchungechunge oluphelele: i-PV array → i-MPPT module → ibhethri Ibhasi le-DC → ishaja esheshayo ye-DC → ibhethri lemoto. Isigaba ngasinye senzelwe ukulahlekelwa okuncane, kanti i-EMS iqondisa ukugeleza ukuze i-solar ihlale ikhonza umthwalo kuqala, izindleko ezengeziwe ze-BESS, kanye nokungeniswa kwegridi kuncishiswe.

Ukulinganisa Ama-Solar Arrays Ngokumelene Nomthamo we-BESS

Amaphutha osayizi—i-PV enkulu kakhulu noma isitoreji esikhulu kakhulu—abhubhisa buthule umnotho wezinhlelo ezihlanganisiwe. Isilinganiso esibusayo yisivuno sansuku zonke selanga uma kuqhathaniswa nokusetshenziswa kwebhethri kanye nesidingo sendawo:

Imithetho emithathu yokulinganisa igcina ukuhlanganiswa kusebenza kahle:

1. Usayizi we-PV kuya ku-40–80% wamandla waminyaka yonke endaweni, hhayi ngo-100%. Ukumbozwa okugcwele kuphoqa ibhethri ukuba likhudlwana futhi lisebenze isikhathi eside; ukumbozwa okuyingxenye kukhulisa inani lelanga nge-watt ngayinye efakiwe. 2.Usayizi we-BESS ube umjikelezo owodwa ogcwele ngosukuokulindelwe kokusalela kwelanga. Ibhethri eliqhutshwa kanye ngosuku ekujuleni okungu-80% kokukhishwa lifinyelela ukucaciswa kwalo okuphelele kokuphila komjikelezo; amabhethri amancane ajikeleza ngokweqile, kanti amakhulu kakhulu alimaza impilo yekhalenda ngaphandle kokusetshenziswa. 3.Qondanisa ububanzi bokufaka be-MPPT nefasitela lokusebenza langempela le-array.Imojuli ye-MPPT enamandla amakhulu ibuyisa amandla ngaphansi komthunzi ongaphelele, inkungu yasekuseni, kanye nokuguga kwamaphaneli okususwa yiyunithi yebanga elincane.

Izinzuzo Zokusebenza Kahle: I-MPPT, Ukuguqulwa, kanye Nokulahlekelwa Okulindile

Ukusebenza kahle kuzuzwa emininingwaneni, futhi izigaba ezintathu zokulahlekelwa zibusa izinhlelo ezihlanganisiwe:

Ukulahlekelwa yi-MPPT.Ukufiphaza ingxenye yentambo yephaneli eyodwa kunganciphisa umkhiqizo we-array yonke ngo-10-20% ngaphandle kokulungiswa kwentambo ngayinye. Amamojula wamandla we-MPPT asebenza kahle kakhulu—njengamamojula we-MIDA angu-30-60 kW MPPT asetshenziswa ezinhlelweni zokushaja zelanga—alandelela iphuzu lamandla eliphezulu lentambo ngayinye ngokuzimela, athole u-5-10% wesivuno sonyaka kumasayithi wangempela anokufiphaza noma ukungafani kwemodyuli.

Ukuguqulwa kanye nokulahlekelwa kokulinda.I-inverter ngayinye isebenza kabi kakhulu uma umthwalo uphansi. Isayithi le-BESS eligcina i-PCS yalo ingasebenzi kumthwalo ongu-2–5% ubusuku bonke lichitha ama-kilowatt-hours ubusuku bonke. Izinhlelo zesimanje zisebenzisa izindlela zokulinda eziphansi kakhulu (

Ukuphathwa kokushisa.Ukupholisa ibhethri kudla amandla; amaphakethe ebhethri apholile ngoketshezi agcina amazinga okushisa afanele kakhulu amaseli ngengxenye encane yokudonswa kwamandla abalandeli kwemiklamo epholile ngomoya. Ezindaweni zesimo sezulu esishisayo, ukupholisa ngoketshezi kungonga u-3-5% wamandla esistimu yebhethri uma kuqhathaniswa nokupholisa ngomoya okuphoqelelwe ngenkathi kwandiswa impilo yeseli.

Uma zihlanganiswa, lezi zinyathelo ziphakamisa uhlelo oluhlanganisiwe kusuka “ekusebenzeni kahle kwe-nameplate engu-90%” kuya “ekusebenzeni kahle kokusebenza okungu-93–96%”—umehluko phakathi [kwesiteshi sokushaja se-BESS esisebenza ngamandla elanga esingu-2 MWh] (https://www.midapower.com/2mwh-960kw-bess-charging-station-megawatt-ev-charger-solar-battery-storage-system-product/) esiletha amandla aso alinganisiwe kanye nesinye esilahlekelwa amandla esikhathi esithile buthule njalo emavikini amabili.

Izindawo Zokukhipha Ukungcola Okungadingeki kanye Nokufuduka Kukadizili

Inzuzo eyinhloko yale coupling ukuzimela kokusebenza. Ezindaweni ezikude, ezivinjelwe yigridi, noma ezisabela ezinhlekeleleni, isikhungo selanga + i-BESS sithatha indawo yejenereyitha kadizili—impendulo eyifa yokuthi “akukho gridi lapha.”

Ukuqhathanisa kuyamangalisa. Ijeneretha kadizili endaweni yokusebenzela emgwaqweni omkhulu ishisa amalitha angu-3-4 ngehora uma umthwalo ungaphelele, ikhipha amakhilogremu angu-2.5-3 e-CO2 ngelitha, futhi ifuna uphethiloli. Ihabhu lelanga+le-BESS elino-150-400 kWp we-PV kanye nesitoreji esingu-500 kWh-2 MWh linikeza isevisi efanayo yokushaja ngaphandle kokukhishwa kwegesi endaweni, ukusebenza buthule, kanye nezindleko eziphansi eziseduze no-zero uma selifakiwe.

Ama-hub asebenzayo abika imiphumela emithathu elinganisekayo:

• Ukonga uphethiloli kanye nokuthutha impahla kusukela ku-$15,000–$60,000 ngonyakauma kuqhathaniswa nokusebenza okulinganayo kwedizili;
• Ukunciphisa i-carbon ngamathani angu-40–120 e-CO2 ngonyakangesayithi ngalinye, eliphinde lifanelekele izinhlelo ze-carbon-credit kwezinye izimakethe;
• Isikhathi sokusebenza esingaphezu kuka-95%ngamashejuli okushaja alawulwa emini, ngegridi noma ijeneretha yokusekela emboza iziqongo zasebusuku ezijulile.

Isakhiwo sokushaja se-BESS [esineziqukathi ezingu-500 kWh] (https://www.midapower.com/news/500kwh-containerized-bess-charging-station-for-grid-constrained-areas/)—ibhethri elineziqukathi elinokufakwa kwelanga okuhlanganisiwe—siyisisekelo sokwakha esijwayelekile salezo zindawo, njengoba sithunyelwa njengeyunithi eyodwa futhi sikhokhelwa ngaphandle kwemisebenzi yokwakha.

Isiphetho

Ilanga kanye nesitoreji akuzona izithuthukisi ezengeziwe endaweni yokushaja; ziyisistimu ehlanganisiwe esebenza kahle kakhulu edlula isamba sezingxenye zayo. Ukuxhumanisa kwe-DC kususa ukulahlekelwa kokuguqulwa, i-MPPT ibuyisa ukulahlekelwa komthunzi, futhi ibhethri iguqula imali eningi yelanga yasemini ibe yimali engenayo yokushaja kusihlwa. Ilinganiswe kahle—i-PV ku-40-80% yamandla esayithi, i-BESS ijikeleza kanye ngosuku, amamojula e-MPPT abanzi—ihabhu le-BESS elisebenzisa amandla elanga linciphisa ukuthengwa kwegridi ngo-40-70%, lisusa udizili ezindaweni ezikude, futhi liletha ukushaja okungenawo ugesi lapho kubaluleke kakhulu khona. Kubasebenzi, umbuzo wokusebenza kahle awusekho “ingabe ilanga lisebenza nesitoreji?” kodwa “yimuphi umklamo wokuxhumanisa obamba kakhulu i-kilowatt-hora ngayinye?”

Imibuzo Evame Ukubuzwa

1. Uyini umehluko phakathi kokuxhumanisa kwe-AC ne-DC kwe-solar + BESS?Ekuhlanganiseni kwe-AC, i-PV nebhethri ngalinye line-inverter yalo ebhasini le-AC, lilahlekelwa amaphuzu angu-2-4 okusebenza kahle kokuhamba nokubuya. Ekuhlanganiseni kwe-DC, amandla elanga anika ibhasi le-DC lebhethri nge-MPPT converter, okugwema ukuguqulwa kabili nokuthuthukisa ukusebenza kahle kube ngu-90-93%.

2. Kufanele ngihlanganise amandla elanga angakanani nendawo yokushaja ye-BESS?Usayizi we-PV ufinyelela ku-40–80% wamandla asetshenziswa yisayithi minyaka yonke. Ukumbozwa okugcwele kuphoqa ibhethri elibizayo ukuba likhule ngokweqile; ukumbozwa okuyingxenye kwandisa inani lelanga nge-watt ngayinye efakiwe ngenkathi kugcina ibhethri lisebenza kahle.

3. I-BESS ehlanganisiwe kufanele ihlose imijikelezo emingaki ngosuku?Cishe umjikelezo owodwa ogcwele ngosuku ngo-80% wokukhipha. Lelo zinga lifinyelela impilo yomjikelezo webhethri elinganisiwe futhi ligcina ezomnotho ziphilile; ukujikeleza ngokweqile kuyawohloza iphakethe, futhi ukujikeleza okungaphelele kudla imali.

4. Ingabe indawo ye-BESS esebenza ngelanga ingasebenza ngokuphelele ngaphandle kwegridi?Yebo, nge-PV eyanele, indawo yokugcina, kanye nesidingo esilinganiselwe emini. Izindawo ezihlanganisiwe zigcina uxhumano lwegridi lokuqina kanye neziqongo ezijulile zakusihlwa; iziqhingi ezihlanzekile zivame ukwengeza ijeneretha yokusekela ezimweni ezimbi kakhulu.

5. Ibaluleke kangakanani ngempela i-MPPT ohlelweni oluhlanganisiwe?Kuma-array anombala noma angalingani, i-MPPT ezimele ngentambo ngayinye ithola u-5-10% wesivuno se-PV sonyaka—amandla abengalahleka ngenye indlela. Kuma-array ahlanzekile, anganombala inzuzo iyancipha, yingakho ukuhlola indawo kubalulekile.

6. Yikuphi ukusebenza kahle okufanele ngikulindele esiteshini sokushaja se-solar-BESS sesimanje?Ukusebenza kahle kohambo oluya nokubuya kuka-93–96% kuyatholakala nge-DC coupling, amaphakethe ebhethri apholiswe ngoketshezi, kanye ne-PCS esezingeni eliphansi—uma kuqhathaniswa no-85–88% wezitaki eziyisisekelo ezihlanganiswe nge-AC.

7. Ingabe ukuhlanganiswa kwelanga kunciphisa izindleko zokufunwa kwendawo?Yebo. Ukukhiqizwa kwamandla elanga kunciphisa ukungeniswa kwegridi ngesikhathi samafasitela entengo ephezulu, kanti i-BESS inciphisa isikhathi esisele semizuzu eyi-15—ihlasela kokubili izingxenye zamandla kanye nesidingo sebhili ngesikhathi esisodwa.