report to cesc on variables and concepts of pvsyst

8/10/2019 Report to CESC on Variables and Concepts of PVSYST

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REPORT TO CLARIF TO CESC

THE SIMLATION ARIABLES AND CONCEPTS

SED IN CMI OFFER 13.10.0021 (PSST)

1/09/2010


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INDE

1. DEFINITIONS:............................................................... 3

2. PSST DATA............................................................... 6

3. DIAGRAM OF FLES OF ENERG ............................... 7

4. PERFORMANCE RATIO: C ............................. 9

ANNE: PSST SIMLATION: 1.05 M


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1.

B PSST (

PSST ):

I . I:

I ( )

(/2). T ()

(/2)

G H : (/2/)

T '

. G H I (GHI)

. T

D N I (DNI)

D H I (DIF).

I :

I .

N S

N = GS / GI. I

IAM

T ( IAM, "I A M")

P ' ,

.

( PSS)FIAM = 1 (1/ 1), = ,

= PSST P 0.05.

E :

I

IAM.

E STC

T STC

STC.


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I

I 1000 /2 (STC).T P "E .

I". I

.

T

T . I

'

.

O

T ( R I )

. T

R

M

I P '

. , P

.

N, ""

, . M

,

, .

M

L ""

I/ .

STC: S T C

I . STC :

1. ( ),

. T 1 . . (1,000 /2)

2.

( ). T 1.5.

3. . STC

25 C.


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N O C T (NOCT): T

P 800 /2 , 20C

1 . NOCT

.

MPP: :

P (I)

() . T

, /I O' L. A P

,

(MPP) ,

(/I = /I)

P R

T , E C (JRC/I),

() ,

"" STC

(I G ).

T PR (S, P , , , )

( ). "S "

, //,

,

.


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2.


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3.

N: T .

) 1 2

G H I (/2/)

GH = 1,905.8 /2/

FT= +7.3% ( )

(T=20)

I (/2/)

(T=20)

GI= 2,045.7 /2/

N = 2 %

IAM = 2,8 %

"E"

IAM (/2/)

GE = 1,947.7 /2/


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) 1,05

"E" (/)

GE = G2 GE = 8,217 1,947.7 = 16,004,251 /

G2 = A

GE = 16,004,251 /

= 12.8 %

G (/)

2,054,231 /

I L = 3.6 %

T L = 9.2 %

A S = 0.5 %

M Q L = 3.2 %

M L = 2.2 %

O L = 2 %

G (/)

1,658,828 /

I = 2.8 %

A E I O (/)1,612,294 /

N S P (/(K))

= EI/PP = 1,612,294 / 1,048 = 1,538

= 1,538 /(K)


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4.

R I E = GI /() STC

N S P = EOI /()

/

= GI ( 3.) = 2,045.7

= ( 3.) = 1,538

PR = 75.2 %

( 1 2 1 )


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ANNE:

PSST SIMLATION: 1.05 M


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Page 1/402/09/10PVSYST V4.37

Grid-Connected System: Simulation parameters

Project : Gajner

Geographical Site Gajner Country India

Situation Latitude 27.9N Longitude 73.0ETime defined as Legal Time Time zone UT+6 Altitude 232 m

Albedo 0.20

Meteo data : Gajner , synthetic hourly data

Simulation variant : Gajner Policristalino 1,05 MWp

Simulation date 02/09/10 11h35

Simulation parameters

Collector Plane Orientation Tilt 20 Azimuth 0

Horizon Free Horizon

Near Shadings according to module

PV Array Characteristics

PV module Si-poly Model XL24195Manufacturer XL TELECOM & ENERGY LIMITED

Number of PV modules In series 24 modules In parallel 224 stringsTotal number of PV modules Nb. modules 5376 Unit Nom. Power 195 WpArray global power Nominal (STC) 1048 kWp At operating cond. 945 kWp (50C)Array operating characteristics (50C) U mpp 574 V I m pp 1648 ATotal area Module area 8217 m

PV Array loss factorsHeat Loss Factor ko (const) 29.0 W/mK kv (wind) 0.0 W/mK / m/s

=> Nominal Oper. Coll. Temp. (800 W/m, Tamb=20C, wind 1 m/s) NOCT 45 CWiring Ohmic Loss Global array res. 11.4 mOhm Loss Fraction 3.0 % at STCSerie Diode Loss Voltage Drop 0.7 V Loss Fraction 0.1 % at STCArray Soiling Losses Loss Fraction 0.5 %Module Quality Loss Loss Fraction 3.0 %Module Mismatch Losses Loss Fraction 2.0 % at MPPIncidence effect, ASHRAE parametrization IAM = 1-bo (1/cos i - 1) bo Parameter 0.05

System Parameter System type Grid-Connected System

Inverter Model JEMA IF 1000KWManufacturer Data sheetInverter Characteristics Operating Voltage 410-850 V Unit Nom. Power 1000 kW AC

User's needs : Unlimited load (grid)


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Page 2/402/09/10PVSYST V4.37

Grid-Connected System: Near shading definition

Project : Gajner


Main system parameters System type Grid-ConnectedNear Shadings according to modulePV Field Orientation tilt 20 azimuth 0PV modules Model XL24195 Pnom 195 WpPV Array Nb. of modules 5376 Pnom total 1048 kWpInverter Model JEMA IF 1000KW Pnom 1000 kW acUser's needs Unlimited load (grid)

Perspective of the PV-field and surrounding shading scene

West South

Zenith

East

Iso-shadings diagram

-120 -90 -60 -30 0 30 60 90 120Azim uth []

0

15

30

45

60

75

90

Sunheight[]

Gajner: 1,1MW 8.5 m_xltelenergy

Beam shading factor (according to module) : Iso-shadings curves

1: 22 june

2: 22 may - 23 july3: 20 apr - 23 aug4: 20 mar - 23 sep5: 21 feb - 23 oct6: 19 jan - 22 nov7: 22 december

7h

8h

9h

10h

11h

12h

13h

14h

15h

16h

17h

18h

19h

1

2

3

4

5

6

7

Behindthe plane

Behindthe plane

Shading loss: 1 %Shading loss: 5 %

Shading loss: 10 %Shading loss: 20 %Shading loss: 40 %

Attenuation for diffuse: 0.969and albedo: 0.292


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Page 3/402/09/10PVSYST V4.37

Grid-Connected System: Main results

Project : Gajner



Main simulation resultsSystem Production Produced Energy 1612 MWh/year Specific 1538 kWh/kWp/year

Performance Ratio PR 75.2 %

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec0

1

2

3

4

5

6

7

8

NormalizedEnergy[kWh/kWp/day]

Normalized productions (per installed kWp): Nominal power 1048 kWp

Yf : Produced useful energy (inverter output) 4.21 kWh/kW p/dayLs : System Loss (inverter, ...) 0.12 kWh/kWp/dayLc : Collection Loss (PV-array losses) 1.27 kWh/kWp/day

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

PerformanceRatioPR

Performance Ratio PR

PR : Performance Ratio (Yf / Yr) : 0.752

Gajner Policristalino 1,05 MWp

Balances and main results

GlobHor T Amb GlobInc GlobEff EArray EOutInv EffArrR EffSysR

kWh/m C kWh/m kWh/m kWh kWh % %

January 113.1 14.70 146.5 137.7 123325 119874 10.24 9.96

February 128.5 17.40 154.4 147.1 129413 125824 10.20 9.92March 167.4 23.50 183.7 176.0 151505 147328 10.04 9.76

April 195.0 28.30 199.0 190.9 160241 155864 9.80 9.53

May 216.1 31.30 206.7 197.8 163345 158792 9.62 9.35

June 206.7 31.10 192.3 183.6 151842 147581 9.61 9.34

July 185.7 29.50 176.3 167.6 140049 136087 9.67 9.39

August 174.2 28.50 172.7 164.6 138000 134088 9.73 9.45

September 161.1 28.30 170.4 162.9 136379 132533 9.74 9.47

October 138.6 26.20 158.9 151.4 128964 125343 9.88 9.60

November 114.3 21.40 144.8 137.2 118890 115591 9.99 9.72

December 105.1 16.70 140.1 131.0 116621 113390 10.13 9.85

Year 1905.8 24.77 2045.7 1947.7 1658576 1612294 9.87 9.59

Legends: GlobHor Horizontal global irradiat ion

T Amb Ambient Temperature

GlobInc Global incident in coll. plane

GlobEff Effective Global, corr. for IAM and shadings

EArray Effective energy at the output of the array

EOutInv Available Energy at Inverter Output

EffArrR Effic. Eout array / rough area

EffSysR Effic. Eout system / rough area


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Page 4/402/09/10PVSYST V4.37

Grid-Connected System: Loss diagram

Project : Gajner



Loss diagram over the whole year

Horizontal global irradiation1906 kWh/m

+7.3% Global incident in coll. plane

-2.0% Near Shading Factor on global

-2.8% IAM factor on global

Effective irradiance on collectors1948 kWh/m * 8217 m coll.

efficiency at STC = 12.8% PV conversion

efficiency at STC = 12.8%2054231 kWh

-3.6% PV loss due to irradiance level

-9.2% PV loss due to temperature

-0.5% Array Soiling loss

-3.2% Module quality loss

-2.2% Module array mismatch loss-2.0% Ohmic wiring loss

Array virtual energy at MPP1658828 kWh

-2.8% Inverter Loss during operation (efficiency)

0.0% Inverter Loss over nominal inv. power

-0.0% Inverter Loss due to power threshold

0.0% Inverter Loss over nominal inv. voltage

-0.0% Inverter Loss due to voltage threshold

Available Energy at Inverter Output1612294 kWh

report to cesc on variables and concepts of pvsyst

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