Wind Turbine Start Control Using Simulative Start Counting
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Solution Overview
Problem
The existing control methods for wind power generator sets result in a long start time for wind turbines and low utilization of wind energy, as they require continuous detection of wind speed exceeding a preset threshold before starting, leading to inefficient power generation.
Innovation Solution
A control method that determines whether real-time wind speed reaches a preset starting wind speed and increments a count of 'analog starts' when the threshold is met, allowing the wind power generator set to start when the count reaches a preset value, thereby reducing the start time and improving energy utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main controller requires wind speed to continuously exceed the preset starting wind speed in a preset time period before starting the wind turbine, then the starting reliability is improved, but the start time becomes long and the utilization rate of wind energy becomes low
Solution Approach 1:
The patent applies preliminary action by performing advance determination of whether real-time wind speed reaches the preset starting wind speed when wind speed of other wind power generator sets or anemometer towers reaches or exceeds the threshold. This allows the system to prepare for startup in advance rather than waiting for continuous threshold exceedance, thereby reducing start time while maintaining reliable operation
Solution Approach 2:
The patent uses partial action by incrementing a count of analog starts rather than requiring continuous threshold exceedance. The wind turbine starts when the count reaches a preset value, which is less stringent than requiring continuous wind speed above threshold, thus reducing start time while still ensuring adequate wind conditions for reliable startup
2Stability of the object's composition
If the main controller requires wind speed to continuously exceed the preset starting wind speed in a preset time period before starting the wind turbine, then the starting stability is improved, but the utilization rate of wind energy becomes low
Solution Approach 1:
The system performs preliminary determination of wind speed conditions using data from other wind power generator sets or anemometer towers before the local wind turbine needs to start. This advance preparation maintains starting stability by verifying wind conditions while enabling faster response to available wind energy, thus improving utilization rate
Solution Approach 2:
The patent implements feedback by using wind speed data from other wind power generator sets or anemometer towers to inform the startup determination. This feedback mechanism ensures stable starting decisions based on actual wind conditions while reducing delays, thereby improving both starting stability and wind energy utilization rate
Data Source
Figure 1A
Figure 1B~2
Figure 3~4
AI summary
A start control method for wind turbines (102), comprising: a master control determines whether its real-time wind speed reaches a preset start wind speed when a wind speed of at least one wind turbine (102) or anemometer tower in a wind farm reaches or exceeds the preset start wind speed; the master controller updates a corresponding number simulative start times when determining that its real-time wind speed reaches or exceeds the preset start wind speed, and starts the wind turbine (102) when the number of simulative start times reaches a preset count value. The present invention also relates to a master controller, a system, and a central controller for wind turbines (102).