Embed Size (px)
Citation preview
1
PV Plant Performance Ratio (PR)Measurements and Limitationsof Acceptance Test PR
Amiram Roth-DeblonRegional Managing Director Asia Pacificjuwi Renewable Energies Private Limited (Singapore)06.06.2012
Contents
1. juwi at a glance
2. Definitions: Solar Power Plant Performance
3. How to monitor PV plant performance
2
3
Renewable Energy Projects –We Make it Happen
4
juwi at a Glance
Established1996, privately owned by 2 founders
Workforce> 1,750 employees
Revenueapprox. 800 Mil. € in 2010approx. 1 billion € in 2011
Headquartes of the juwi group in Wörrstadt, Germany
Number of Renewable Power Plantsapprox. 2,000 installations
Total Capacityapprox. 1,900 megawatts
Total Investment (since 1996)approx. 4.0 billion €
Annual Energy Outputapprox. 3.5 billion kilowatt-hoursCorresponds to the annual electricitydemand of one million households
Annual Reduction of Emissionsapprox. 2.5 billion kg of CO2
5
Our Vision
Hydro
Pow
er
Geotherm
alEnergy
Bioenergy
Solar
Energy
Wind
Energy
Electrom
obility
Green
Buildings
Work together to implement renewable energieseconomically and reliably with passion.
100% Renewable Energies
Energy EfficiencyClean Power Production
Research & Development Cooperations
6
Our Services: It‘s all about the project
Consulting &Acquisition
Planning DevelopmentFinancing &Sales
Construction Management
7
Offices, Projects and New Markets
Headquarters in Germany
Western EuropeFrance, Great Britain
Southern EuropeItaly, Spain, Greece
Eastern EuropeCzech Republic, Poland, Bulgaria
AmericasUSA, Costa Rica, Chile
AsiaIndia, Singapore
AfricaSouth Africa
8
Selected ReferencesLieberose, Brandenburg, GermanyFree-field / 71 megawatts
Blue Wing, Texas, USAFree-field / 16 megawatts
Torreilles, Pyrenees, FranceFree-field / 12 megawatts
Rajkot, Gujarat, IndiaFree-field / 10 megawatts
Goodyear, Phillipsburg, GermanyRooftop / 7.4 megawatts
Selected References: Solar Energy
Goodyear Rooftop, Phillipsbrug Germany (7.4MW)
Former military area in Brandenburg, Germany (71 MW)
Selected References: Solar Energy
Selected ReferencesRajasthan, IndiaFree-field / 5.3 megawatts
Drachevo, BulgariaFree-field / 3.5 megawatts
Tambo Real, ChileFree-field / 1.2 megawatts
Covered Market, Verona, ItalyRooftop / 1.67 megawatts
Mont Jali, Kigali, Rwanda (Africa)Free-field / 250 kilowatts
Rajkot, Gujarat, India (10 MW)
Surendranagar, Gujarat, India (2.5 MW)
2. Definitions: Solar Power PlantPerformance
10
Monitoring unit
Measurement ofPV plant parameters
Measurement ofmeteorological
parameters
How to monitor PV plant performance
Calculation ofperformanceindicators
Reference YieldFinal YieldSpecific YieldPerformanceRatioAvailability
12
PV plant performance indicators - I
13
PV plant performance indicators - II
Further generic performance indicators
AvAvAvAv : Availability [%]Real operation time / theoretical maximum operation time
CUFCUFCUFCUF : Capacity Utilization Factor [%]ETU / theoretical maximum energy with continuous operation at nominal capacity
What is the Performance Ratio?
PR =Actual Yield
Ideal Yield
PR =
X
Where are the losses in the PV plant?
LV AC-Cable HV AC-CableDC-Cable
EIN (theoretical) Eout (real)
PR = Quality Factor
Losses
16
PR – The Ultimate PV Performance indicator
The Performance of any PV power plant, anywhere, is ultimately defined bythe PR
Now the question arises:How do we determine the PR as precisely as possible….
Any investor or bank wants a simple and reliable method to determine the PR
A rule of thumb would be:Use a simple formula with as few parameters as possibleMeasure as precise as possible
17
Details of PR Calculation
18
PR DeterminationTwo parameters are the key
19
3. How to monitor PV plant performance
20
How can these values be measured?How precise are these measurements?
Yf or ETU (Real Yield) is always available� just read the utility meter� Simple and precise (0.2% to 2%)� Can be done remotely
gPV (Global Irradiation in the module plane)� needs meteorological sensors or satellite data� Subject to various limitations� Much less precise (2% to 15%)
PR: Pyranometer vs. Satellite
Pyranometer & External Weather-Station Satellite
Satellite
What are the PROs & CONs?
Local External
High Accuracy Independent source
Short Intervals No soiling-problems
Measuring in module-plane No calibration of sensors
No gaps
22
Rules for Solar irradiation measurements
Some fundamental rules are:Do not use Crystalline Irradiation sensors(only for auxiliary data or small systems, not precise enough for Power plants)
Pyranometers are the best choice but:− Use the best ones available (CMP 11, Secondary class, Calibrated)− Use at least two, to minimise measurement errors− Make sure the sensor is installed and used properly− Soiling will have a significant effect
Install a powerful monitoring systemIndependent of inverters (i.e. skytron energy or similar)
Engage a professional Operation and Maintenance provider− As backup, use independently provided satellite data and a calculated PR
23
Thank You Very Much forYour Attention!
Contact:Amiram Roth-Deblonjuwi Renewable Energies Private Limited20 Havelock Road, # 02-25 Central Square,Singapore 059765Tel. +65 64 28 86 70 Mob. +65 84 98 74 66Fax. +49. (0)6732. 96 [email protected]
