Wind Turbine Wake-Up Threshold Adjustment for Reliable Restart

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Solution Overview

Problem

Waking a wind turbine from a sleep state requires significant energy and can fail if wind speed is insufficient, often due to inaccurate wind speed readings, leading to wasted energy and potential battery depletion.

Innovation Solution

Adjusting measured wind speed or wake-up threshold based on the history of previous transitions, using incremental adjustments for successful and failed attempts to optimize the transition process, reducing the risk of failure and conserving energy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the wind turbine transitions from sleep state to active state using a fixed wake-up threshold, then the transition decision is simple and quick, but the transition may fail when wind speed measurements are inaccurate, wasting energy and potentially depleting the battery

Engineering Contradiction:

Improvetransition success rateVSAvoidenergy waste from failed transitions

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system performs preliminary adjustments to the wake-up threshold or measured wind speed based on the outcomes of previous transition attempts. By learning from past successes and failures, the system proactively modifies the transition criteria before the next wake-up attempt, improving the likelihood of successful transitions and avoiding energy waste from failed attempts

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism that tracks the outcomes of previous transitions (successful or failed) and uses this information to adjust future transition decisions. The controller modifies the wake-up threshold or wind speed measurement based on historical performance data, creating a closed-loop control system that continuously improves transition reliability while minimizing energy waste

Inventive Principle:

Principle #23Feedback

2Loss of energy

If the wind turbine remains in sleep state to conserve energy, then energy consumption is minimized, but the turbine cannot respond to suitable wind conditions for power production

Engineering Contradiction:

Improveenergy conservationVSAvoidpower production capability

Core Design Contradiction:

Loss of energyVSProductivity

Solution Approach 1:

The system dynamically adjusts the wake-up threshold or measured wind speed based on historical transition outcomes rather than using a fixed threshold. This dynamic adaptation allows the turbine to optimize the balance between energy conservation in sleep state and timely response to power production opportunities, adjusting its sensitivity to wake-up conditions based on learned experience

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP4042016B1Waking a wind turbine from a sleep state

Publication Date: 2025.12.03 VESTAS WIND SYSTEMS AS

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AI summary

A method of transitioning a wind turbine from a sleep state is provided in which a wind speed at the wind turbine is measured, and the measured wind speed is compared to 5 a wake-up threshold. If the wind speed exceeds the wake-up threshold, the wind turbine is transitioned to an active state. Before comparing, either the measured wind speed or the wake-up threshold is adjusted based on an outcome of at least one previous transition from the sleep state of the wind turbine.