Wind Turbine Boost Control for Grid Frequency Stabilization
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Solution Overview
Problem
Wind turbines lack the ability to contribute to frequency stabilization and power-swing stabilization during transient conditions in utility systems, limiting their participation in maintaining grid stability.
Innovation Solution
A control method for wind power plants that determines individual wind turbine generator output boost capabilities and commands selected turbines to temporarily increase power output based on weather forecasts and current output shortfalls, allowing intelligent frequency and voltage control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wind turbines operate with fixed rated power output, then equipment simplicity and operational reliability are maintained, but the ability to stabilize power system frequency during transient conditions is insufficient
Solution Approach 1:
The wind turbine control system transitions from fixed rated power operation to dynamic power adjustment. The controller continuously monitors system frequency and automatically adjusts the turbine output power in response to frequency deviations, enabling the turbine to adapt its operation to grid conditions while maintaining equipment reliability through controlled dynamic response
Solution Approach 2:
The invention changes the operating parameter of power output from a fixed rated value to a variable parameter that can be adjusted based on system frequency conditions. The control system modifies the turbine output power parameter dynamically, increasing or decreasing power delivery to stabilize frequency while maintaining equipment operational reliability
2Productivity
If wind turbine output is increased to meet desirable power levels, then power supply adequacy is improved, but individual turbine output variability and control complexity increase
Solution Approach 1:
The control system is segmented into hierarchical levels: individual turbine controllers handle local output adjustment based on received commands, while the plant controller manages overall power optimization. This segmentation allows the system to achieve high productivity through coordinated turbine operation while distributing control complexity across multiple independent control units rather than requiring a single complex centralized system
Solution Approach 2:
The control system implements feedback mechanisms where individual turbine controllers report their operational status and output capabilities to the plant controller, which then adjusts setpoints based on actual plant performance. This feedback loop enables the system to achieve desirable power levels by continuously monitoring and adjusting individual turbine outputs, managing control complexity through automated closed-loop control rather than manual intervention
Data Source
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Figure 3
AI summary
A method and system for intelligently directing output boost capabilities of wind turbine generators (310, 312, 34) operating together in a wind plant (300) has been provided. Selected ones of the wind turbine generators have their own individual boost modes of operation that can provide a limited time increase in power output. This boost capability of the selected individual generators (116) is conveyed to the wind plant control (328) upon request and is used to direct individual boot operations of the generators. In some embodiments, weather forecast information (340) including wind forecast information is used to calculate the generators present and future forecasted boost capabilities.