Wind Turbine Control Segmentation for Grid Power Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
During output power reducing operations in wind farms, wind turbines struggle to increase output power in response to utility grid requests due to varying wind conditions, leading to unsatisfactory power delivery.
Innovation Solution
A control apparatus and method that classify wind turbines into two groups based on wind speed, allowing turbines not meeting the rated wind speed condition to exit power reduction and those meeting it to supplement power deviations, ensuring target output power is maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wind turbines perform output power reducing operation to secure reserve capacity, then grid stability is improved, but the ability to respond to output power increase requests deteriorates
Solution Approach 1:
The control device segments the fleet of wind turbines into multiple groups based on their wind speed conditions. Each group can be independently controlled, allowing selective release from power reduction operations. This segmentation enables the system to maintain overall reserve capacity while having specific groups available to respond to power increase requests.
Solution Approach 2:
The control device dynamically adjusts the operational status of different wind turbine groups based on real-time grid requests and wind conditions. When a power increase request is received, the control device selectively releases specific groups from power reduction operations, creating a dynamic response capability that adapts to changing grid needs while maintaining overall system stability.
2Productivity
If wind turbines are controlled to increase output power in response to grid requests, then power delivery capability is improved, but output power stability deteriorates due to varying wind conditions
Solution Approach 1:
The control device applies different control strategies to different groups of wind turbines based on their local wind speed conditions. Groups with higher wind speeds are selected to increase power output, while groups with lower wind speeds maintain power reduction operations. This local quality approach ensures that power increases are generated from turbines with sufficient wind resources, maintaining output stability.
Solution Approach 2:
The control device continuously monitors wind speed conditions and adjusts the operational status of wind turbine groups accordingly. When wind conditions change, the control device re-evaluates which groups should be released from power reduction operations, creating a feedback mechanism that maintains optimal power delivery capability while adapting to varying wind conditions.
3Power
If all wind turbines are released from power reduction operation simultaneously, then total output power is improved, but control flexibility and grid stability deteriorate
Solution Approach 1:
The control device maintains segmentation of wind turbines into multiple groups even when total power output needs to be increased. Instead of releasing all turbines simultaneously, it can selectively release groups based on grid needs and wind conditions, preserving control flexibility and enabling staged power increases that maintain grid stability.
Data Source
AI summary
In a control apparatus for a wind turbine generator system, a wind turbine classifying unit classifies a plurality of wind turbines into a first wind turbine group that does not satisfy a rated wind speed condition and a second wind turbine group that satisfies the rated wind speed condition. A first controlling unit releases, for the wind turbines of the first wind turbine group, the output power reducing operation and causes the wind turbines of the first wind turbine group to perform an output power corresponding to a wind condition. A second controlling unit supplements a first deviation, which is a difference between a total output power of the first wind turbine group and a target output power, with an output power from the wind turbine of the second wind turbine group.