Dab tsi cuam tshuam rau kev faib PV rau ntawm daim phiaj?

Cov kev hloov pauv ntawm cov kev sib txuas sib txuas tau hloov pauv tseem ceeb, cuam tshuam los ntawm kev sib koom ua ke ntawm cov tshuab hluav taws xob faib hluav taws xob photovoltaic (PV). Raws li kev faib tawm PV, nrog rau lub zog cia thiab microgrid thev naus laus zis, txuas ntxiv mus, kev sib txuas sib txuas tau hloov pauv los ntawm lawv cov luag haujlwm tsis tu ncua mus rau ntau dua. Qhov kev hloov pauv no tau qhia txog txheej txheej tshiab ntawm kev nyuaj rau kev tswj hwm thiab kev ua haujlwm ntawm cov tes hauj lwm no.

Qhov kev sib tw ntawm kev tswj xyuas daim phiaj hluav taws xob sib npaug tau nce ntxiv. Tam sim no, hauv ntau thaj chaw, tsis muaj kev saib xyuas txaus thiab kev kwv yees kwv yees rau kev faib PV tiam. Qhov kev sib txawv no ua rau cov txheej txheem kev kwv yees cov khoom siv tsis zoo, tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas muaj kev faib tawm PV kev sib koom ua ke, yog li cuam tshuam qhov tseeb ntawm kev kwv yees. Yog li ntawd, cov phiajcim raug yuam kom tswj hwm qib siab dua ntawm cov peev txheej tshwj xeeb kom haum rau qhov sib txawv hauv kev faib PV tiam. Kev sib xyaw ua ke ntawm kev faib tawm PV, centralized PV, thiab cua tsim teeb meem rau kev tswj xyuas qhov siab tshaj plaws, tshwj xeeb tshaj yog thaum lub sijhawm xav tau qis thiab hnub so.

Grid stability, nyob rau hauv cov nqe lus ntawm zaus thiab voltage kev cai, tau raug cuam tshuam. Distributed PV systems, kev khiav hauj lwm nrog ib tug tas mus li lub hwj chim yam (feem ntau cos φ=1), tsis pab rau reactive hwj chim. Qhov xwm txheej no tau ua rau muaj kev poob qis lossis kev thim rov qab ntawm qhov sib txawv ntawm cov kab sib chaws hauv cov cheeb tsam uas muaj cov kab sib txuas hauv nruab nrab, ua rau muaj qhov cuam tshuam loj hauv qhov system. Cov theem hluav taws xob tuaj yeem nce siab tshaj qhov kev txwv tsis pub dhau lub sijhawm thauj khoom siab tshaj plaws lossis hnub so, uas ua rau muaj kev cuam tshuam ntawm PV systems hauv qhov xwm txheej hnyav.

Qhov nrawm nrawm ntawmfaib PV kev sib txuastau ua kom yooj yim hauv zos load ntsuas, zoo tiv thaiv qhov nce hauv daim phiaj kev thauj khoom thiab hloov qee cov khoom siv hluav taws xob ib txwm muaj. Txawm li cas los xij, thaum lub sijhawm ua txhaum cai, faib PV tsis muaj peev xwm muab lub zog reactive ua rau tsis txaus dynamic reactive fais fab kev txhawb nqa, ua rau poob rau hauv cov theem voltage thiab, nyob rau hauv cov xwm txheej heev, ntev voltage dips.

Faib PV systems muab lub zog ua haujlwm raws li lub hnub ci muaj tab sis tsis tuaj yeem hloov kho rau cov kab sib chaws zaus hloov pauv tau. Raws li qhov sib koom ntawm cov khoom siv hluav taws xob ib txwm txo qis, kab sib chaws txoj cai muaj peev xwm txo qis.

Tsis tas li ntawd, kev ntseeg siab ntawm cov khoom siv hluav taws xob ntsib cov teeb meem tshiab. Nyob rau hauv qhov xwm txheej ntawm kab txhaum, faib PV tuaj yeem muab lub zog rau cov neeg siv khoom sib txuas, tshwj xeeb yog txo qhov nruab nrab txhua xyoo hluav taws xob rau cov khoom tseem ceeb. Txawm li cas los xij, kev ntsuam xyuas qhov kev ntseeg tau ntawm kev sib faib network raws li kab sib txuas-kev sib txuas PV cov xwm txheej yuav tsum tau xav txog cov yam ntxwv tshiab, xws li lub peev xwm rau cov Islands tuaj thiab qhov tsis muaj peev xwm ntawm cov khoom tsim tawm.

Hauv cov ntsiab lus, qhov nce ntawm cov khoom siv hluav taws xob PV tau hloov kho qhov chaw ua haujlwm ntawm kev faib khoom sib txuas, ua rau lawv muaj zog dua, tab sis kuj cuam tshuam rau lawv txoj haujlwm thiab kev saib xyuas. Qhov kev hloov pauv no ua rau muaj kev sib tw hauv kev ntsuas hluav taws xob, kev ruaj ntseg ntawm daim phiaj, thiab kev ntseeg siab, xav tau cov kev daws teeb meem tshiab thiab kev hloov kho hauv kev tswj kab sib chaws.