Wind Turbine Start Control Using Analog Wind-Speed Counts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing control methods for wind power generator sets result in a long start time and low utilization rate of wind energy, as they require wind turbines to only start when wind speed consistently exceeds a preset threshold, leading to inefficiencies in power generation.
Innovation Solution
A control method that determines real-time wind speed and updates a count of 'analog starts' when it reaches the preset starting wind speed, allowing the wind turbine to start when the count reaches a predetermined value, even if the wind speed has not consistently exceeded the threshold, thereby reducing start time and increasing energy utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main controller requires wind speed to always exceed the preset starting wind speed in a preset time period before starting the wind turbine, then the starting condition is ensured to be stable, but the start time of the wind turbine becomes long and the utilization rate of wind energy becomes low
Solution Approach 1:
The patent applies preliminary action by introducing an 'analog start count' mechanism that accumulates wind speed threshold exceedances over time. When the wind speed exceeds the preset starting wind speed, the analog start count is incremented. The wind turbine starts when this count reaches a preset value, allowing the system to prepare for startup in advance based on anticipated wind conditions rather than waiting for continuous threshold exceedance, thus reducing start time while maintaining reliable starting conditions
Solution Approach 2:
The patent applies dynamics by transforming the static starting condition (wind speed must always exceed threshold) into a dynamic accumulation process (analog start count incrementing over time). This dynamic approach allows the system to adapt to varying wind conditions more flexibly, accumulating evidence of favorable wind conditions over time and enabling startup when the accumulated count reaches the preset value, thereby reducing unnecessary waiting time
2Reliability
If the main controller requires wind speed to always exceed the preset starting wind speed in a preset time period, then false starts are avoided, but the power generation amount and availability decrease
Solution Approach 1:
The patent applies preliminary action by using the analog start count mechanism to accumulate wind speed threshold exceedances before actual startup. This preliminary accumulation phase allows the system to verify favorable wind conditions over multiple measurement cycles, preventing false starts caused by transient wind fluctuations, while still enabling timely startup when genuine wind conditions persist, thus maintaining reliability while improving power generation amount
Solution Approach 2:
The patent applies feedback by continuously monitoring wind speed and using this information to update the analog start count. The feedback loop compares real-time wind speed measurements against the preset starting wind speed threshold, incrementing or maintaining the count based on whether the threshold is exceeded. This feedback mechanism ensures that startup decisions are based on verified wind conditions, preventing false starts while capturing genuine wind energy opportunities
Data Source
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).