Wind Turbine Power Performance IEC 61400-12-1

Power performance measurements according to the international guidelines IEC 61400-12-1 ed.1 and ed. 2.

Neem contact op:

Yerún Fernández Yerún Fernández
Service Line Leader - Measurements
Wind Turbine Power Performance IEC61400

Training Information

  • Duration:

    3 days

  • Language:


Course planning

February 6-8, 2018
Bristol, United Kingdom
EUR 1200 p.p.

This three day course allows attendees to benefit from DNV GL’s extensive experience in power performance measurements according to the international guideline IEC 61400-12-1 ed.1 and also understand the changes included in ed.2.

Additional information
Expectations for power performance verification are defined and negotiated before financial close of a project in order to minimize financial risk. Performance verification procedures and power curve warranties are defined in the turbine supply contracts. After wind farm commissioning, the verification test is used to demonstrate that the turbine’s performance is within the acceptance level and to quantify the uncertainties. The test can also be carried out during the wind farm operation in order to follow and quantify the performance of the wind turbines. The course will explain the technical approach defined in IEC 61400-12-1.

The course includes live and interactive exercises in order to apply the technical requirements to sample datasets.

On completion, delegates should understand the key technical requirements for power performance verification, the field implementation of the measurements, the most significant factors affecting the uncertainties calculation, the impact in the Annual Energy Production (AEP) in case of power curve optimization and how the measured power curve is compared with the warranted power curve.

Course Outline:
Day 1
• General introduction to IEC 61400-12-1
        • Introduction and history
        • Overview of the guideline comparing ed. 1 and ed. 2
        • Power curve warranties in contracts
• Terrain and obstacle assessment
        • Introduction of Annexes A and B comparing ed. 1 and ed. 2
        • Selection of wind turbine(s) for testing
        • Selection of optimal position for the reference mast(s)
        • Exercises
• Instrument mounting for the meteorological (met) mast
        • Introduction to Annex G, comparing ed. 1 and ed. 2
        • Selecting the optimal configuration for the mast
        • Best practices for instrument mounting
        • Exercises
• Site calibration measurements - setup
        • Introduction to Annex C, comparing ed. 1 and ed. 2
        • Test equipment to be applied
• General Q&A session

Day 2
• Site calibration measurements – data collection
        • Data collection, filtering and evaluation
        • Uncertainty analysis
        • Exercises
• Power performance measurements - setup
        • Wind speed definitions comparing ed. 1 and ed. 2
        • Wind measurement equipment
        • Remote sensing devices setup and requirements
        • Wind turbine measurements
• Power performance measurements – data collection
        • Data filtering
        • Data normalization techniques (e.g. density, shear, veer, etc)
        • In-situ calibration
        • Power curve and AEP calculations
        • Exercises
• General Q&A session

Day 3
• Power performance measurement uncertainties
        • Introduction to sensitivity factors
        • Wind speed uncertainties including for RSD
        • Other measurement uncertainties (e.g. density, seasonality)
        • Method uncertainties
        • Combining uncertainties
        • Exercises
• Power curve verification
        • Case studies
        • Uncertainty in power curve warranties
• General Q&A session

Who should attend?
Developers, operators, lenders and other professionals who wish to benefit from DNV GL’s technical knowledge and expertise.