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© 2013 Firstgreen Consulting
Firstgreen Consulting Pvt Ltd.U 28A/3 FF DLF PH III Gurgaon India -122002
+91-124-4063031+919899295854| | www.firstgreen.co
Solar Project Performance Assessment
Firstgreen Webinar Series : 29th April 2014
© 2014 Firstgreen Consulting
About Firstgreen Consulting
Project Management Consulting
Due diligence including technical, commercial and environmental services, Design and development including pre-contract negotiations, Land identification, Vendor finalisation, Preparation of RFP and RFQ, Equipment procurement, Site supervision
Detail Engineering & Design
Plant layout & design, Solar PV system sizing, Module & inverter selection, Shadow analysis, DC cable route planning, Monitoring & control system design, AC system design, Plant storm water planning, Power evacuation planning
Lender’s Engineer
Borrower financial appraisal, technical due diligence, assessment of power off take arrangements, engineering design review, review of compliance and approvals, review of plant performance guarantees and warrantees, Site supervision
Project Financing
Arranging finance from domestic banks, Private equity funding, Arranging the buyer’s credit, organising the collaterals, bridge loan financing,
© 2013 Firstgreen Consulting 3
Speakers
Dr. Sanjay Vashishtha
CEO, Firstgreen Consulting
Mr. Basant Jain
CEO Mahindra EPC
© 2014 Firstgreen Consulting
Key Topics
Requirement of Solar Plant Performance
Assessment
Plant Performance monitoring Strategies
Creating the PVSYST model for the actual data
String performance analysis
Quantifying the module soiling losses
Assessment of shadow losses
Inverter performance analysis
Thermography analysis of the PV plant
Effect of temperature on the plant performance
Benchmarking methodsWays to conduct the root
cause analysis
Assessment of performance ratio of the
plant
© 2014 Firstgreen Consulting
Solar Plant Performance Assessment
© 2014 Firstgreen Consulting
The Performance of Solar Plants has been improving over last few years
Performance of Solar Plants in India
© 2014 Firstgreen Consulting
Requirement of SPV plant Assessment
Gangesh Green
CUF 12.2%
Waa Solar
CUF 20.6%
Plant performance is dependent on BoS and System SizingIt is also dependent on the better O&M practices
© 2014 Firstgreen Consulting
Plant Data Monitoring Strategies
PV panelsCombiner
boxes Inverter Transformer ABT Meter
V,I V,I V,I, kWh V,I kWh
At the PV panels the solar
radiation is being recorded
At string level measurement of current & Voltages are monitored
At inverter level V,I are measured at the input
as well as at output level. The kWh is also
measured
The energy injected to the grid is measured at the ABT meter
© 2014 Firstgreen Consulting
Performance Assessment at String Level
© 2014 Firstgreen Consulting
String Performance can be affected due to Five Key Factors
Loose Lugs
High Operating
Temperature
Hot Spots in PV
Modules
Shadow losses
Undersized DC wires
Module Mismatch
The Underperforming string
11© 2014 Firstgreen Consulting
Shadow Losses
Shadow losses can significantly reduce your plant performance
© 2014 Firstgreen Consulting
Inter-row spacing and Shading
Inter row shading needs to be optimised. This can cause significant losses in your plant.
© 2013 Firstgreen Consulting 13
Monitoring the String Voltage and Currents
IV Curve of a partially shaded string
14© 2014 Firstgreen Consulting
Benchmarking of String Performance
Array string performance to each other.
String performance to a Standard Panel.
String performance to specific Solar Radiation level.
Panel to Panel performance within a string or to standard.
© 2013 Firstgreen Consulting 15
Inverter Performance Analysis
This inverter is performing bestThis inverter is performing
poorest
16© 2014 Firstgreen Consulting
Assessment of Plant losses
© 2014 Firstgreen Consulting
Monitoring instruments
Thermography Megger Tong tester Power meter
IV Tracer Pyranometer
© 2014 Firstgreen Consulting
Use of Thermography in Solar Plant Performance Assessment
© 2014 Firstgreen Consulting
Step by Step Approach to conduct Plant Performance Assessment
© 2014 Firstgreen Consulting
Five Step process for Plant Performance Assessment
Feasibility analysis
Identification of Options
Site Assessment
: Planning and organization
Priorities the feasible options
Where are the bottlenecks?
Validate the available Information
Analyze the data in advance
Implement the options
Monitor the results for continuous improvement?
© 2014 Firstgreen Consulting Questions ?
© 2014 Firstgreen Consulting
Thank YouFirst Green Consulting Private Limited
U-28A/3 FF, White Town House
DLF Ph III Gurgaon,
Haryana – 122002, India
Tel.: (+91) 124 4063031 , 9899295854
Fax: (+91) 124 424 1751
www.firstgreen.co
Questions ?
