Lub siab sib npaug ntawm photovoltaic sib xyaw ua ke xws li kev sib tw hluav taws xob, muaj zog sib txawv, thiab ua kom muaj kuab paug rau lub zog hluav taws xob. Ntiaj teb no yog hloov chaw los ntawm kev sib koom ua ke cov qauv sib xyaw ua ke kom nquag txhawb nqa kev ruaj khov. Los ntawm cov thev naus laus zis xws li kev siv hluav taws xob ntsig txog kev kho mob, thiab kev siv hluav taws xob tsawg} Qhov no "kev sib tw phooj ywg" hloov kho yog qhov tseem ceeb ua kom tiav ntawm kev sib npaug ntawm kev sib txuas dua tshiab.
1 reedeive voltage tswj: Kho kom haum rau du tawm kev hloov pauv
Tuam Tshoj tus "SVG + inverter synergy" daws. Cov chaw nres tsheb fais fab 800mw hluav taws xob hauv Gansu xeev tau nruab nrog cov hluav taws xob sib txuas, uas tau txuas rau cov hluav taws xob sib txuas ntawm 100 lub inverters hauv chaw nres tsheb fais fab. Thaum cov phiaj xwm voltage yog hauv qab 0.95pu, lub SVG ua ntej cov zis ntawm lub zog siv hluav taws xob muaj zog (lub sijhawm teb<50ms), and the inverters synchronously adjust the power factor to 0.9 ahead. The combination of the two shortens the voltage recovery time to 200ms. When the voltage is above 1.05pu, it switches to inductive reactive power (power factor 0.9 lagging) to avoid voltage exceeding the limit. This technology controls the voltage deviation of the grid connection point within ± 2%, which improves the efficiency by 40% compared to a single SVG regulation. In a certain power grid fluctuation event, the power station successfully reduced the voltage fluctuation amplitude from 10% to 3%.
Faib cov hluav taws xob ua kom zoo ua kom zoo hauv Tebchaws Europe. Ib qho 500mw faib cov photovoltaic cluster nyob rau hauv lub teb chaws Yelemees (muaj kev txhawb nqa lub zog (DYNATCOM) rau txhua sub array. Los ntawm "cov kev tawm tsam dav dav", cov kev tawm tsam hluav taws xob tau faib rau ntawm txoj hauj lwm sub thiab daim phiaj thaiv (ntawm ntug sub array bears 40%). Qhov kev faib no txwv tsis txhob muaj kev pheej hmoo ntawm SVG, thiab cov hluav taws xob kev cai lij choj nce mus txog ± 0.5mvar, uas yog 50% siab dua hauv nruab nrab. Kev xyaum nyob rau hauv Baden - → rteller tau nce qhov teeb meem hluav taws xob tau nce ntxiv ntawm cov teeb meem ntawm voltage inids.
2 Kev them nqi hluav taws xob qis thiab ntau zaus: Kev tsim kho cov khoom siv rau kev cuam tshuam nrog cov phiaj xwm fais fab yuam
Lub peev xwm ntawm "lvrt + inertia simulation" hauv Tebchaws Asmeskas. Lub inverter ntawm 1gw photoovoltaic fais fab kev tsim ntawm "( 200MW / 400MWY ZOG CIANTION) Los ntawm "Inertulating Rotor inertia ntawm cov neeg muaj zog tshaj plaws ntawm cov kab sib luag ntawm 0.5Z rau 0.2Hz. Thaum lub sij hawm Texas Daim Phiaj Nres Txuas ntxiv rau hauv daim phiaj thiab muab 50mw zaus cov kev sib zog ua kom muaj zog, pab cov kab sib chaws sai thiab ruaj khov.
Is Nrias teb tus nqi qis lvrt transformation 'program. Rau qub photovoltaic fais fab nroj tsuag (inverters tsis muaj lvrt muaj nuj nqi, thiab ua rau tus nqi hluav taws xob "(nrog tus nqi hluav taws xob (tswj hwm DC sab nraud) Qhov chaw nres tsheb tshiab ntawm 300mw lub chaw nres tsheb qub hauv Rajasthan pom tias txoj kev sib txuas ntawm daim phiaj ntawm kev sib txuas ntawm Txoj Cai Sib Txuas Kev Sib Tham ntawm Is Nrias teb (Cea). Lub sijhawm nqis peev them rau kev hloov pauv tsuas yog 2 xyoos xwb.
3 Harmonic Tswj Xyuas thiab Kev Txhim Kho Lub Zog Zoo: Txhim kho lub purity ntawm lub hwj huam sib chaws
Tuam Tshoj txoj "nquag lim + SVG kev koom ua ke" thev naus laus zis. Lub chaw nres tsheb 1.2gw SVG yog lub luag haujlwm rau cov kev cai tswj hluav taws xob, thaum apf yog lub luag haujlwm rau kev tswj cov nyom (uas tuaj yeem lim tawm 2-50th Harmonics). Qhov ob faib rau DC npav, txo tus nqi los ntawm 30% piv rau hom sib cais. Cov kev them nyiaj harmonic raug ntawm ApF ncav cuag (th ob leeg Tom qab daim ntawv thov ntawm qee qhov chaw nres tsheb fais fab, cov khoom tsis ua haujlwm ntawm cov neeg lag luam precising kev lag luam poob qis los ntawm 20%, zam kev cuam tshuam ntau ntxiv los ntawm kev sib raug zoo.
Nyiv "muab cov kev saib xyuas kev saib xyuas thiab tswj". Nyob rau hauv teb rau cov teeb meem harmonic tshwm sim los ntawm kev faib cov photovoltaics (kev lag luam thiab cov khoom lag luam " Qhov "Harmonic Tracing Algorithm" yog siv los nrhiav qhov ua kom haum xeeb (xws li cov photovoltaic inverter hauv ib qho chaw them nyiaj. Qhov kev coj ua hauv qee lub nroog Tokyo qhia tau hais tias cov phiaj xwm no txo cov khoom xa tuaj ntawm tsev neeg los ntawm 5000 ntawm hluav taws xob muaj hluav taws xob ib xyoos).
Kev txhim kho ntawm "Daim phiaj kev sib deev" ntawm photovoltaic fais fab nroj tsuag yog qhov tseem ceeb hloov los ntawm "kev sib cav" rau "lub zog" ntawm lub zog tshiab thiab daim phiaj. Nyob rau yav tom ntej, nrog kev sib koom ua ke ntawm cov khoom siv hluav taws xob virtual, thiab ua kom muaj peev xwm twv txiaj ntsig zoo li cov kev thov hluav taws xob, thiab rov qab ua kom muaj zog ntxiv, thiab cov thaub qab muaj zog rau cov kab sib chaws, ua kom haum Thiab tswj tau "regulators ntsuab" hauv lub zog hluav taws xob tshiab.