Wind Turbine Power Control via Predicted Wind and Lifetime Constraints
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Solution Overview
Problem
Existing power control methods for wind turbines fail to balance safety and economics due to differences between standard and actual wind parameters in wind farms.
Innovation Solution
A method and device that predict wind resource data and estimate the maximum design lifetime of wind turbines to determine optimal output power in each wind speed section, allowing for controlled operation that maximizes power generation while ensuring safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power control is performed based on the power curve determined at the design phase, then the wind turbine operates according to standard design parameters, but the control method cannot consider both safety and economics when actual wind parameters differ significantly from standard parameters
Solution Approach 1:
The patent applies dynamics by transitioning from a static power curve (fixed at design phase) to a dynamic power control method that continuously adjusts output power based on real-time wind conditions and predicted future wind resources. The control system dynamically modifies the power output to balance safety constraints with economic optimization, allowing the wind turbine to adapt its operation to actual varying wind parameters rather than following a fixed design curve
Solution Approach 2:
The patent implements preliminary action through wind resource prediction that forecasts future wind conditions before they occur. By predicting wind resources in advance, the control system can proactively adjust power output to optimize both safety and economics, rather than merely reacting to current conditions. This predictive capability allows the system to prepare optimal control strategies ahead of time based on anticipated wind patterns
2Productivity
If the wind turbine operates to maximize power generation, then productivity increases, but the design lifetime may be exceeded under actual wind conditions different from standard parameters
Solution Approach 1:
The patent applies feedback by continuously monitoring actual wind parameters, comparing them against design parameters, and using this information to adjust power output in real-time. The control system incorporates feedback loops that track cumulative design lifetime consumption and modify operational decisions to prevent exceeding the designated service life, thereby balancing maximum power generation with long-term durability constraints
3Duration of action of stationary object
If the wind turbine operates under design load continuously, then the design lifetime is optimized, but power generation capacity is reduced when wind conditions allow for higher output
Solution Approach 1:
The patent implements parameter changes by continuously varying the power output parameter based on changing wind conditions and cumulative lifetime consumption. Rather than maintaining a fixed power level, the system dynamically adjusts operational parameters (power output) to exploit favorable wind conditions for maximum generation while retreating to lower power levels when lifetime constraints approach limits, thereby optimizing the trade-off between productivity and durability
Data Source
AI summary
A power control method and apparatus for a wind power generator. The power control method comprises: predicting, according to historical wind resource data, wind resource data within a predetermined future time period (S10); estimating, according to the remaining design lifetime of a wind power generator, the maximum design lifetime allowed to be consumed within the predetermined future time period (S20); determining, according to the predicted wind resource data and the estimated maximum design lifetime, optimal output powers of the wind power generator in respective wind velocity ranges within the predetermined future time period (S30); and controlling operation of the wind power generator according to the determined optimal output powers of the wind power generator in the respective wind velocity ranges within the predetermined future time period (S40).