Introduction More than 3,000 turbines already reap the benefits of PowerPlusTM, a suite of upgrades focusing on optimizing power production for installed turbines, from partial load to post-cut out operation. Vestas has developed Extended Cut Out, which allows turbines to operate beyond their original cut out speeds to capture the full potential of strong winds. By increasing the cut out wind speed, Extended Cut Out can deliver an AEP improvement of up to 3%, and even up to 5-7% at sites with very advantageous climatic conditions. This case study presents field results from Extended Cut Out implementations, as well as an introduction to the technology and methodology behind the upgrade. Table of contents Case 1: Reap the benefits of stong wind resources 4-5 Case 2: Combining Extended Cut Out with Power Uprate 6-7 Case 3: Optimizing production in high winds 8-9 Case 4: Extended Cut Out with hysteresis gap reduction 10-11 Technical description 12-13 Vestas SiteCheck® 14 Validation of production gains 15 PowerPlusTM solutions and impact on power curve Power kW Aerodynamic Upgrades Power Performance Optimisation Power Uprate Extended Cut-Out Partial Load Operation Full Load Operation Post Cut Out Operation Turbine applicability Extended Cut Out V47 V80 V90-3.0MW Power (kWh) Display of the PowerPlus™ solutions and their impact oWn AiEnPdon(mthe/dsi)fferent stages of the power curve Wind m/s V100 2 PowerPlusTM Case study Extended Cut Out
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