Ucwaningo olwenziwa abacwaningi e-Institute for Energy Technology eNorway luhlaziye ukuthi kungenzeka yini kwezomnotho kwe-hybridization ye-hypothetical cascade hydropower system ene-photovoltaics elintantayo (FPV) kanye nama-photovoltaics afakwe phansi (GPV) ngaphansi kwezimo zemakethe zase-Afrika eseningizimu yeSahara. Kulolu hlobo lwesistimu ye-hybrid, ichibi elikhuphuka nomfula lixhunywe endaweni engaphansi komfula, futhi ama-FPV angafakwa endaweni yokugcina amanzi.
"Lolu cwaningo luhlose ukugqamisa ukuthi ukusebenza ngaphansi kwezindleko zewashi kanye nentengo yamandla ahlukahlukene kanye nangaphandle kwezibopho zomthwalo kuthinta kanjani ubukhulu besistimu ye-hybrid exhunywe kugridi ye-utility-scale hybrid," kusho ososayensi, bephawula ukuthi ukuhlanganisa i-PV yesikali esisetshenziswa ngamanzi kungaba "indlela engenzeka yokunciphisa ukuguquguquka kwamandla ngezikhathi ezithile."
Ucwaningo luthole ukuthi inzuzo yaminyaka yonke yomkhiqizi yohlelo lwe-hydro hybridized inyuke ngo-18-21% kanye no-0-4% ohlelweni lwesivumelwano sokuthenga amandla amathathu (i-PPA) nohlelo lwemakethe yamabala, ngokulandelana, uma kuqhathaniswa nohlelo lwe-hydro-only ezimeni zemakethe zase-Afrika eseningizimu ye-Sahara. Iphinde yathola ukuthi ukuxutshwa ngama-GPV okulandela umkhondo we-single-axis kungaba "inketho engenzeka ngokwezomnotho uma kuqhathaniswa nohlelo lwe-FPV" ngenxa ye-capex ephansi kanye nesivuno esiphezulu samandla e-GPV.
"Ngaphezu kwalokho, kulinganiselwa ukuthi i-capex ye-FPV kufanele ibe ngaphansi kwe-42-57% kunaleyo ye-PV (GPV) ebekwe phansi phansi ngokulandelela kwe-axis eyodwa yohlelo lwe-hydro-FPV ukuze kufinyelelwe inzuzo yomkhiqizi yonyaka efanayo njengohlelo lwe-hydro-GPV," abacwaningi bachaza.
Basekelwe ekuqageleni kwezobuchwepheshe kuzo zombili izinhlelo ze-FPV kanye ne-GPV ekulinganisweni kwezindleko zoMnyango Wezamandla Kazwelonke Welabhorethri Yamandla Avuselelekayo Yase-US yezinhlelo ze-PV, ngemali enkulu kanye nezindleko zokusebenza ezingaguquki ezihlobene nohlelo lwamanzi olusebenzayo olubhekwa njengezindleko ezishisiwe. Ukuze uthole okokufaka kwesimo semakethe kagesi, iphepha lisebenzise idatha yomlando yamanani entengo yemakethe yaseNingizimu Afrika (SAPP) kusukela ngo-2014 kuya ku-2021.
Ucwaningo lwecala luphinde luthathe ukuxhunywa kwesistimu ye-hybrid negridi kazwelonke, enamandla amakhulu aphuma ku-126 MW. Ngaphezu kwalokho, leli phepha lihlongoza "imodeli yokuhlela eqondile yobukhulu/ukuhlelwa kwesistimu ye-hydro-FPV eyi-hybrid."
Ngonyaka wesimo sezulu esomile, ukuxutshwa kwezitshalo zamanzi ngama-FPV kunganxephezela ukunciphisa ukukhiqizwa kwamandla ngamanzi, okuholela ekunyukeni kwama-4% enzuzweni yaminyaka yonke yomkhiqizi. Nokho, eminyakeni yesimo sezulu esimanzi, ukuxutshwa kwesitshalo samanzi nge-FPV akuzange kubonwe njengento engenzeka ngokwezomnotho, kuyilapho eminyakeni emaphakathi, kungafinyelelwa kuphela ukwenyuka okungenandaba kwenzuzo yomkhiqizi yonyaka (ngaphansi kuka-0.1%), ngenxa yemikhawulo yamandla egridi emandleni okuthi i-FPV ibambe iqhaza emakethe ngesikhathi samanani aphezulu. "Ngaphezu kwalokho, uhlelo lwe-hydro-GPV lubhekwa ukuze lukhiqize inzuzo ephezulu yabakhiqizi yonyaka uma kuqhathaniswa nesistimu ye-hydro-FPV kuzo zonke izimo ezihlaziywe (cishe i-13-18%)," kuphawula iphepha.
Okutholakele kuyatholakala embikweni othi “Ukusebenza kwe-Techno-economic of hybrid hydro-FPV systems in Sub-Saharan Africa ngaphansi kwezimo ezihlukene zemakethe,” eshicilelwe ngo. Amandla avuselelekayo.
“Imiphumela igqamisa imiphumela yezinhlelo ezihlukene zezimakethe kanye neminyaka yesimo sezulu eshintshayo ekwakhiweni nasekusebenzeni kohlelo lwe-hybrid. Kodwa-ke, ekufanekiseni isikhathi eside, ukuqina kwemiphumela kungathuthukiswa ngokufaka izindlela ze-stochastic optimization ekuhlaziyweni kwe-techno-economic yezinhlelo ze-hybrid-FPV, "kuphetha abacwaningi.
Umthombo ovela pv umagazini
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