Wind Turbine Power Regulation for Turbulent Offshore Wind
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Solution Overview
Problem
Offshore wind turbines face challenges in maintaining stable power generation due to turbulent wind speeds, leading to low running reliability and inability to meet power grid demands, as existing control methods struggle with dynamic wind conditions and engineering constraints.
Innovation Solution
A method and device for controlling wind turbine generator sets that involve acquiring operation data and influence factors using IoT systems, adjusting gearbox step-up ratios, generator electromagnetic torque, and rotor speed to regulate power generation, ensuring it meets power grid requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional active power control methods (closed-loop rotational speed control or pre-set power supply) are used, then the control system is simple to implement, but the power generation stability deteriorates under turbulent wind conditions
Solution Approach 1:
The patent implements dynamic adjustment of the wind turbine's operating parameters (rotor speed, generator torque, pitch angle) in real-time to track the optimal equilibrium point under turbulent wind conditions. The control system continuously adapts to changing wind conditions rather than operating at a fixed setpoint, thereby maintaining power generation stability without excessive complexity.
Solution Approach 2:
The patent employs a closed-loop feedback control mechanism that monitors actual power output and compares it with the reference power curve, then adjusts control parameters to minimize deviations. This feedback approach enables the system to automatically compensate for turbulent wind disturbances and maintain stable power generation.
2Stability of the object's composition
If the wind turbine operates at stable equilibrium points, then the power output is stable, but the system cannot respond quickly to turbulent wind changes
Solution Approach 1:
The control system dynamically adjusts operating parameters to track the optimal equilibrium point in real-time under turbulent wind conditions. By continuously adapting the setpoints rather than maintaining a fixed equilibrium, the system achieves both stability and rapid response to wind changes.
Solution Approach 2:
The patent uses predictive algorithms to anticipate upcoming wind changes and pre-adjust control parameters before the turbulence fully impacts power output. This proactive adjustment allows the system to maintain stability while responding quickly to anticipated wind conditions.
3Productivity
If the wind turbine continuously tracks the stable equilibrium point under turbulent winds, then the power generation follows the reference curve, but the mechanical loads on the fan structure increase
Solution Approach 1:
The patent applies partial active power control by adjusting generator torque and pitch angle to a degree that achieves acceptable power output following the reference curve, rather than fully aggressive control. This moderate adjustment approach maintains productivity while limiting excessive mechanical loads on the fan structure.
Solution Approach 2:
The control system modifies operating parameters (torque coefficient, pitch angle) within optimized ranges to balance power extraction with structural protection. By carefully selecting parameter adjustment magnitudes, the system achieves good power following performance while keeping fan loads within acceptable limits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves power generation stability and ensures that the output of wind power generators satisfies power grid scheduling by safely regulating and controlling power generation, addressing the instability caused by turbulent winds.
Implementation Method 1
a fan wheel, an output shaft of the fan wheel, a generator, a gearbox
Implementation Method 2
a generator, a gearbox connected to the output shaft of the fan wheel and the generator
Data Source
AI summary
A power generation control method and a device for a wind power generation unit are provided. The method includes: acquiring operation data generated during the operation of a wind power generation unit; acquiring data of influence factors of a wind power generator group; determining a component of an electric power generation power regulation component of the wind power generator group; determining the data of the influencing factor and the feature data of the wind power generator unit, the electric power generation power of the wind power generator unit when each piece of operation data of the wind power generator unit is independently adjusted; determining an adjustment and control method for each piece of operation data according to the magnitude of the electric power supply; and controlling an operation method of a wind power generator group according to the adjustment and control method.