Concordances et concordanciers De l'art du bon KWAC Du nouveau ...
Performance Anal sisAnal ysis of 258 kWac Solar...
Transcript of Performance Anal sisAnal ysis of 258 kWac Solar...
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Performance Anal sis of 258 kWacPerformance Analysis of 258 kWacSolar Demonstration Project
John AitonAndy BergrudNovember 10 2015November 10, 2015
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Company OverviewCompany Overview 28 member cooperatives
1.7 million consumers 88,000 miles distribution 1,575 employees
4th largest G&T in the nation 910 employees (MN & ND) 910 employees (MN & ND) 3,718 MW generation
• 710 MW renewables710 MW renewables(Wind, Hydro, Solar, Biomass)
4,696 miles transmission
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Project Overview – 258 kWacProject Overview 258 kWac
Solar Panels Inverters95.4 kWdc 100 kWac
122 kWdc 108 kWac
54 kWdc 50 kWac
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Procurement & Construction
“Made in USA” & “Made in MN” equipment
Procurement & Construction
Made in USA & Made in MN equipment Manufacturer ownership changes
i l d i ( i f 20 6) Equipment lead times (current issue for 2016) Economies of scale pricing Tariffs on cells & module price/availability impacts Safety & NEC compliance cable management Safety & NEC compliance, cable management
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Performance – monthly peakPerformance monthly peak300
200
250258 kWac
150
200
ac ‐Pe
ak
20142015
100kWa 2015
0
50
b lJan Feb Mar Apr May June July Aug Sept Oct Nov Dec
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Performance – capacity factorPerformance capacity factorMaple Grove Combined ‐ Capacity Factor
20%
25%
15%
ity Factor
201413.6%
5%
10%
Capa
ci 2015
0%Jan Feb Mar April May June July Aug Sept Oct Nov Dec
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Performance – capacity factorPerformance capacity factor
25%Maple Grove Solar ‐ Year 1 Performance
20%
25%
10%
15%
Factor Sharp
tenKsolar
5%
10%
Capa
city F tenKsolar
Suniva
0%
Jan
Feb
Mar
April
May
une
July
Aug
ept
Oct
Nov Dec
C
7
F M A M Ju J A S O N D
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Performance – cloudy daysPerformance cloudy daysIdeal output Partially ideal output Erratic output
Month June July Aug Sept Oct Nov Dec Jan Feb Mar Apr May TOTALIdeal Output 0% 0% 0% 10% 19% 10% 13% 10% 18% 16% 17% 13% 10%
P ti llPartially Ideal Output
23% 32% 23% 20% 23% 10% 6% 19% 18% 23% 23% 13% 20%
Erratic 77% 68% 77% 70% 70% 80% 81% 71% 64% 61% 60% 74% 70%Output 77% 68% 77% 70% 70% 80% 81% 71% 64% 61% 60% 74% 70%
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Ideal day outputIdeal day output
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Grid managementGrid management
Power Swing Summary
99% to 36% in 12 seconds
36% to 98% in 34 seconds
98% to 51% in 12 seconds
51% 98% i 31 d51% to 98% in 31 seconds
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Performance – snow recoveryPerformance snow recovery80 0%
90.0%
100.0% Sharp Solar Panels
40 0%
50.0%
60.0%
70.0%
80.0%
Irradiance
10.0%
20.0%
30.0%
40.0%Power
0.0%
12/26/14 1/18/1521 days to recover!Array Winter average recovery Array Dec 26 snowfall recovery
Suniva 3 days
TenKsolar 3.5 days
Sharp 9 8 days
Suniva 5 days (1/2/15)
TenKsolar 8 days (1/5/15)
Sharp 21 days (1/18/15) Sharp 9.8 daysSharp 21 days (1/18/15)
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Statewide Capacity FactorsStatewide Capacity FactorsMonth Average Capacity Factor
January 5 7%January 5.7%
February 9.7%
March 15.8%
April 16.6%
May 15.3%
June 17.4%
July 18.4%
August 15.9%
September 14 1%
http://solar greatriverenergy com
September 14.1%
October 10.8%
November 5.3%
b 3 8% http://solar.greatriverenergy.com
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December 3.8%
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Statewide output balancing?Statewide output balancing?120.00%
(Erratic Output Day)
100.00%
AC)
IMCEA %
60.00%
80.00%
tput (kW
A
Arrowhead %
Goodhue %
Kandiyohi %
40.00%
60.00%
Power Out Lake Region %
East Central %
Dakota %
0 00%
20.00%
%
Combined %
0.00%4:48 AM 7:12 AM 9:36 AM 12:00 PM 2:24 PM 4:48 PM 7:12 PM 9:36 PM
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Performance ‐ Harmonics
IEEE‐1547 Compliance
Performance Harmonics
IEEE 1547 Compliance
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Current HarmonicsCurrent HarmonicsFundamental (1st Order)
100
120
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60
80
100
rren
t (am
ps)
TenK Solar
20
40
Cur Solectria
Advanced Energy
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9/23/2014
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Current HarmonicsCurrent HarmonicsTotal Demand Distortion ‐ TDD (3rd, 5th, 7th)
3 50%
4.00%
4.50%
5.00%
2.00%
2.50%
3.00%
3.50%
TDD (%
)
TenK Solar
0.50%
1.00%
1.50%
2.00%Solectria
Advanced Energy
0.00%
6:00
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6:30
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7:30
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9/23/2014
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Shading impacts: not just power lossShading impacts: not just power lossHot spots due to partial shading on module
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DG Metering OptionsDG Metering Options
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Lessons learned Procurement volatility in the industry
Lessons learned
Large and rapid power swings
Significant seasonal output variance Significant seasonal output variance
Snow shed ability dependent on racking design
d l f Demonstrated value for energy storage
No observed harmonic issues
Shading impacts on equipment life
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