20 PV Formula suav

n=Pm (lub zog siab tshaj plaws ntawm lub xov tooj ntawm tes) / A (lub cheeb tsam ntawm tes) x Pin (qhov xwm txheej lub teeb hluav taws xob hauv ib cheeb tsam)

Qhov twg: Pin{0}}KW/㎡=100mW/cm²

Vmax=Vrated x 1.43 npaug

3.1 Tus naj npawb ntawm cov roj teeb modules nyob rau hauv parallel=nruab nrab txhua hnub lub zog noj ntawm lub load (Ah) / nruab nrab txhua hnub lub zog tsim ntawm lub module (Ah).

3.2 Tus naj npawb ntawm cov roj teeb modules nyob rau hauv series=system operating voltage (V) x coefficient 1.43/peak operating voltage ntawm lub module (V).

Roj teeb muaj peev xwm=nruab nrab txhua hnub siv hluav taws xob ntawm qhov load (Ah) x tus naj npawb ntawm cov hnub los nag / qhov tso tawm qhov tob tshaj plaws.

Qhov nruab nrab tawm tus nqi (h)=tus naj npawb ntawm cov hnub los nag sib law liag x lub sijhawm ua haujlwm / qhov tso tawm qhov tob tshaj plaws.

Load ua hauj lwm lub sij hawm (h)=∑ load zog x load ua hauj lwm lub sij hawm/load zog

7.1 Roj teeb muaj peev xwm=nruab nrab lub zog noj ntawm qhov load (Ah) x Tus naj npawb ntawm cov hnub los nag sib law liag x tshem tawm qhov kho kom raug / qhov tso tawm qhov tob tshaj plaws x qhov ntsuas kub qis

7.2 Tus naj npawb ntawm cov roj teeb hauv series=qhov system khiav hauj lwm voltage / roj teeb nominal voltage

7.3 Tus naj npawb ntawm cov roj teeb nyob rau hauv parallel=tag nrho cov roj teeb muaj peev xwm / roj teeb nominal peev

8.1 Cheebtsam fais fab=(lub zog hluav taws xob x hluav taws xob lub sijhawm / lub hnub ci lub sijhawm hauv zos) x poob coefficient Loss coefficient: noj 16 ~ 2.0 raws li cov pa phem hauv zos, kab ntev, lub kaum sab xis installation, thiab lwm yam.

8.2 Roj teeb muaj peev xwm=(hluav taws xob lub zog x hluav taws xob lub sij hawm / qhov hluav taws xob voltage) x nruam los nag hnub x system kev ruaj ntseg yam System kev nyab xeeb yam: noj 1.6 ~ 20, raws li lub roj teeb tawm "qhov tob, lub caij ntuj no kub, inverter conversion efficiency, thiab lwm yam .

Cheebtsam (square array)=K x (hluav taws xob ua hauj lwm voltage x hluav taws xob ua hauj lwm tam sim no x hluav taws xob lub sij hawm) 1 Thaum lub zos txhua xyoo hluav taws xob tag nrho yog tswj los ntawm ib tug neeg + kev siv dav dav, K yog npaum li 230: thaum tsis muaj txij nkawm + txhim khu kev qha siv, K yog npaum li 251; Thaum tsis muaj kev saib xyuas + hnyav ib puag ncig + kev ntseeg siab heev, K raug coj los ua 276

10.1 Array zog=coefficient 5618 x Safety factor x tag nrho load zog noj/slope kho factor x nruab nrab txhua xyoo hluav taws xob ntawm lub dav hlau kab rov tav

Factor 5618: Raws li tus nqi thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob, cov khoom sib txuas ntawm cov coefficient, thiab lwm yam.: Kev nyab xeeb: Raws li kev siv ib puag ncig, seb puas muaj lub zog thaub qab, txawm tias muaj ib tus neeg ua haujlwm, thiab lwm yam, siv 11 ~ 1.3 .

10.2 Roj teeb muaj peev xwm=10 x tag nrho cov khoom siv hluav taws xob siv hluav taws xob / kev ua haujlwm voltage; 10 yog qhov tsis muaj hnub ci coefficient (muaj feem xyuam rau cov hnub los nag tsis tshaj 5 hnub).

11.1 Tam sim no

Cov khoom siv tam sim no=thauj khoom txhua hnub siv hluav taws xob (Wh) / system DC voltage (V) x peak hnub ci teev (h) x system efficiency coefficient

System efficiency coefficient: suav nrog roj teeb them efficiency {{0}}}.9, inverter conversion efficiency 0.85, tivthaiv fais fab rho + kab poob "+ plua plav, thiab lwm yam. 0.9, kho raws li qhov tseeb tej yam kev mob .

11.2 Lub zog

Cheebtsam tag nrho lub zog=tivthaiv lub zog tsim tam sim no x system DC voltage x coefficient 1.43.

Coefficient 1.43: Qhov sib piv ntawm cov khoom ua haujlwm siab tshaj plaws rau kev ua haujlwm voltage

11.3 Roj teeb Pob Muaj Peev Xwm

Roj teeb pob muaj peev xwm=[load txhua hnub siv hluav taws xob Wh / system DC voltage V] x [ntau hnub los nag / inverter efficiency x Roj teeb qhov tob]

Inverter efficiency:txog 80% ~ 93% raws li cov khoom siv xaiv: Roj teeb qhov tob: raws li nws qhov kev ua tau zoo thiab kev ntseeg tau, xaiv ntawm 50% ~ 75%.

12.1 Kev suav ntawm System Roj Teeb Pob Muaj Peev Xwm

Roj teeb pob muaj peev xwm (Ah)=lub sij hawm kev nyab xeeb x nruab nrab txhua hnub load fais fab mov (Ah) x siab tshaj plaws hnub los nag x kub kho qhov ntsuas kub tsawg / roj teeb qhov siab tshaj qhov tso tawm qhov tob.

Kev nyab xeeb yam: nruab nrab ntawm {{{0}}.4: Qhov ntsuas kub qis qis: 10 rau saum toj {{10}}}"C, 11 rau saum -10 degree , 12 rau saum toj no -20 degree: Roj teeb qhov siab tshaj qhov tso tawm qhov tob yog 0.5 rau lub voj voog ntiav, 0.75 rau lub voj voog sib sib zog nqus, thiab 0.85 rau alkaline nickel-cadmium roj teeb.

12.2 Tus naj npawb ntawm Modules Txuas

Tus naj npawb ntawm cov modules hauv series=qhov system khiav hauj lwm voltage (V) x coefficient 1.43 / xaiv module ncov kev khiav hauj lwm voltage (V)

12.3 Kev suav ntawm Nruab Nrab Nruab Nrab Hnub Nyoog Tsim Lub Zog Ntawm Cov Module

Hnub nruab nrab lub zog tsim hluav taws xob ntawm cov modules=(Ah)=xaiv module ncov kev khiav hauj lwm tam sim no (A) x peak hnub ci teev (h) x txoj kab nqes kho coefficient x module attenuation poob coefficient

Peak hnub ci teev thiab nqes nqes kho coefficient yog cov ntaub ntawv tiag tiag ntawm qhov chaw teeb tsa: Module attenuation poob kho coefficient feem ntau yog hais txog qhov poob vim kev sib txuas ntawm module, module fais fab attenuation, module plua plav npog, kev them nqi, thiab lwm yam., feem ntau {{0} }.8.

12.4 Kev suav cov roj teeb muaj peev xwm yuav tsum tau rov ua dua rau lub sijhawm luv tshaj ntawm ob hnub los nag sib law liag

Replenished roj teeb muaj peev xwm (Ah)=qhov kev nyab xeeb x qhov nruab nrab txhua hnub siv hluav taws xob ntawm kev thauj khoom (Ah) x ntau kawg ntawm cov hnub los nag.

Kev suav ntawm tus naj npawb ntawm parallel modules:

Number of parallel modules=[replenished roj teeb muaj peev xwm + nruab nrab lub zog noj txhua hnub ntawm load x shortest interval hnub] / nruab nrab txhua hnub fais fab tsim ntawm modules x luv tshaj hnub interval hnub

Kev siv hluav taws xob nruab nrab txhua hnub ntawm kev thauj khoom=load zog / load ua hauj lwm voltage x tus naj npawb ntawm cov sij hawm ua hauj lwm ib hnub twg.

Kev tsim hluav taws xob ib xyoos ib zaug=(kWh)=hauv zos txhua xyoo hluav taws xob hluav taws xob (KWH/㎡) x photovoltaic array cheeb tsam (㎡) x module conversion efficiency x kho qhov zoo. P=H·N·K

Kho coefficient K=K1·K2·K3·K4·K5

K1 yog qhov txo qis coefficient ntawm kev ua haujlwm mus sij hawm ntev ntawm cov khoom siv, noj 0.8: K2 yog qhov kev kho rau lub zog txo los ntawm cov plua plav thaiv cov khoom thiab qhov kub thiab txias, noj 0. 82; K3 yog qhov kho kab, noj 0.95; K4 yog lub inverter efficiency, noj 0.85 los yog raws li qhov chaw tsim tshuaj paus cov ntaub ntawv: K5 yog tus kho coefficient rau orientation thiab qaij lub kaum sab xis ntawm lub photovoltaic array, noj txog 0.9,

Photovoltaic array cheeb tsam=ib xyoos twg lub hwj chim noj / ib cheeb tsam ib xyoos twg tag nrho cov hluav taws xob hluav taws xob x tivthaiv conversion efficiency x kho coefficient A=P/H·n·K

1 cal=41868 joules (J)=116278 milliwatt-teev (mWh)

1 kilowatt-teev (kWh)=3.6 megajoules (MJ)

1 kilowatt-hour/㎡ (KWh/㎡7)=36 megajoules/㎡ (MJ/㎡)=0.36 kilojoules/cm (KJ/cm) 100 milliwatt-hours/cm (mWh/cm) )=85.98 cal/cm (cal/cm)

1 megajoule/meter (MJ/m)=23 889 cal/cm (cal/cm)=27.8 mWh/cm (mWh/cm) Thaum cov hluav taws xob hluav taws xob yog cal/cm: Lub hnub ci siab tshaj txhua xyoo=hluav taws xob x 00116 (conversion factor) Thaum cov hluav taws xob hluav taws xob yog megajoule/meter: Lub hnub ci siab tshaj txhua xyoo teev=hluav taws xob - 36 (kev hloov pauv) Thaum lub teeb hluav taws xob yog kilowatt-teev/meter: Peak hnub ci teev=hluav taws xob - 365 hnub Thaum lub teeb hluav taws xob yog kilojoule/cm, lub hnub ci siab tshaj teev=hluav taws xob 0.36 (kev hloov pauv hloov pauv)

Roj teeb muaj peev xwm 25h x inverter fais fab / ntsuas hluav taws xob ntawm cov roj teeb pob

Tus nqi tsim hluav taws xob nqi=tag nrho cov nqi + tag nrho cov tsim hluav taws xob

Power station profit=(power buy price - power generation cost price) x ua hauj lwm lub sij hawm nyob rau hauv lub hwj chim chaw nres tsheb lub neej Fais fab tuag nqi nqi=(tag nrho cov nqi - tag nrho cov nyiaj pab) - tag nrho cov tsim hluav taws xob fais fab chaw nres tsheb profit { {5}} (siv nqi muas - nqi hluav taws xob nqi 2) x lub sij hawm ua hauj lwm nyob rau hauv lub hwj chim chaw nres tsheb lub neej Fais fab chaw nres tsheb profit=(lub hwj chim purchase price - fais fab tuag nqi nqi 2) x lub sij hawm ua hauj lwm nyob rau hauv lub hwj chim chaw nres tsheb lub neej + cov nyiaj tau los tsis yog kev lag luam

Tsis muaj nyiaj pab: txhua xyoo lub zog tsim hluav taws xob x nqi hluav taws xob - tag nrho cov peev txheej x 100%=tus nqi rov qab txhua xyoo Nrog lub chaw nres tsheb fais fab: ib xyoos twg lub zog tsim hluav taws xob x tus nqi hluav taws xob - (tag nrho cov nqi peev - tag nrho cov nyiaj pab) x 100% {{6} } txhua xyoo tus nqi rov qab nrog cov nqi hluav taws xob thiab cov nyiaj pab them nqi hluav taws xob: kev tsim hluav taws xob txhua xyoo x (tus nqi hluav taws xob + nqi hluav taws xob them nyiaj) + (tag nrho cov nqi peev - tag nrho cov nyiaj pab) x 100%=txhua xyoo rov qab tus nqi

19.1 inclination lub kaum sab xis

latitude Kab rov tav qaij lub kaum sab xis ntawm lub module

0"-25 degree qaij kaum=latitude

26 degree -40 degree qaij kaum=latitude + 5 degree -10 degree (+7 degree nyob rau hauv feem ntau ntawm kuv lub teb chaws)

41 degree -55 degree qaij kaum=latitude + 10 degree -15 degree

Latitude>55" qaij kaum=latitude + 15 degree -20

19.2 Nws

Azimuth lub kaum sab xis=[peak load sij hawm ntawm hnub (24h system) - 12] x15 + (longitude - 116)

D=0707H/tan[acrsin(0 648cosФ-0 399sinФ)]

D: pem hauv ntej thiab nram qab qhov sib nrug ntawm module array

Ф: latitude ntawm photovoltaic system (zoo nyob rau sab qaum teb hemisphere, tsis zoo nyob rau yav qab teb hemisphere)

H: ntsug qhov siab los ntawm ntug hauv qab ntawm lub rear photovoltaic module mus rau sab saum toj ntawm pem hauv ntej ntaub thaiv npog