Wind Power Generator Dynamic Threshold Control
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Solution Overview
Problem
Existing wind power generators face challenges in achieving both sufficient power generation and load reduction, as conventional methods do not adequately consider the duration of wind conditions that lead to transitions from normal to low-load operation modes, resulting in delayed transitions and increased loads.
Innovation Solution
The wind power generator employs a dynamic threshold adjustment system, where the transition threshold from normal to low-load operation mode is temporarily lowered during periods when low-load operation is likely, and returns to normal when conditions change, allowing early transition to low-load mode during sustained high-load conditions and preventing power generation decreases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transition threshold is set high to prevent decrease in power generation, then the amount of power generation is improved, but the transition to low-load operation mode is delayed and the load increases
Solution Approach 1:
The patent applies dynamics by making the transition threshold variable rather than fixed. The threshold dynamically adjusts based on the duration of wind conditions - it is lowered when high wind conditions are expected to persist (after considering duration information) and raised when conditions are transient. This dynamic adjustment allows the system to optimize between power generation and load reduction in real-time based on predicted wind condition duration.
Solution Approach 2:
The patent changes the parameter of the transition threshold based on the duration of wind conditions. By incorporating duration information, the system modifies the threshold value adaptively - setting it higher when high wind is brief (to maintain power generation) and lower when high wind is sustained (to reduce load early). This parameter change resolves the contradiction by making the threshold responsive to temporal characteristics of wind conditions.
2Force
If the transition threshold is set low to reliably avoid load increase, then the load is reduced, but the amount of power generation decreases
Solution Approach 1:
The system dynamically adjusts the transition threshold based on the duration of high wind conditions. When duration analysis indicates that high wind conditions will persist, the threshold is lowered to trigger early transition to low-load mode, reliably avoiding load increase. When duration analysis shows transient conditions, the threshold is raised to prevent premature transition, maintaining power generation. This dynamic behavior resolves the contradiction between load reduction and power generation.
Solution Approach 2:
The transition threshold parameter is changed based on duration information of wind conditions. The system modifies this parameter adaptively - decreasing it when sustained high wind is predicted (to reduce load) and increasing it when high wind is brief (to maintain power generation). This parameter change strategy optimizes the trade-off between load reduction and power generation based on temporal wind characteristics.
3Force
If frequent transitions to low-load operation mode occur, then the load is reduced, but the amount of power generation decreases
Solution Approach 1:
The patent applies preliminary action by using duration information to predict whether high wind conditions will persist before making transition decisions. This preliminary assessment prevents unnecessary or premature transitions to low-load mode by evaluating the temporal characteristics of wind conditions first. Only when duration analysis indicates sustained high wind does the system trigger transition, avoiding frequent unnecessary transitions and associated power generation losses.
Solution Approach 2:
The system uses feedback from duration monitoring to adjust transition decisions. By continuously monitoring how long high wind conditions have persisted and predicting future duration, the system provides feedback to the transition logic. This feedback mechanism prevents frequent oscillations between operation modes by ensuring transitions occur only when duration thresholds are meaningfully exceeded, stabilizing power generation while still reducing load when appropriate.
Data Source
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AI summary
Provided is a wind power generator that can make an improvement for achieving both a sufficient amount of power generation and reduction of the load acting on the wind power generator. A wind power generator (1) has a normal operation mode and a low-load operation mode, and operates in the low-load operation mode when wind condition data exceeds a threshold of transitioning from the normal operation mode to the low-load operation mode, wherein once the wind condition data exceeds a normal transition threshold and a transition from the normal operation mode to the low-load operation mode occurs, the transition threshold is reduced for a predetermined period of time.