Wind Farm Dispatch Control Using Transient Reserve Capacity
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Solution Overview
Problem
Wind farms face challenges in consistently providing a predefined amount of power due to uncontrollable wind variations, leading to increased costs through supplementary energy storage or purchasing power from neighboring areas.
Innovation Solution
A wind power dispatch management system that includes a wind farm controller, transient wind farm reserve management, and storage reserve management, which estimates and dispatches reserves to adjust real-time power output, utilizing kinetic energy and energy storage to maintain power balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If supplementary energy storage is used in the wind farm, then power output stability is improved, but installation and operating costs increase
Solution Approach 1:
The wind farm utilizes its own transient reserve capacity (inertia reserve) to compensate for power fluctuations, eliminating the need for external supplementary energy storage systems. The controller manages the transient reserve by adjusting the power output of individual wind turbines based on real-time wind conditions and grid requirements, making the system self-sufficient.
Solution Approach 2:
The invention extracts and utilizes the transient reserve capacity already present within the wind farm's existing wind turbines. By calculating and dispatching the transient reserve capacity of individual turbines, the system extracts the necessary compensation capability from within the wind farm itself rather than adding external storage infrastructure.
2Reliability
If power is purchased from neighboring control areas or reserve generators, then power supply reliability is improved, but generation costs increase
Solution Approach 1:
The wind farm manages its own power balance by utilizing its transient reserve capacity, eliminating the need to purchase power from external sources. The controller calculates the transient reserve capacity of each wind turbine and dispatches it to compensate for power deficiencies, making the wind farm self-reliant and avoiding costly external power purchases.
Solution Approach 2:
The system performs preliminary calculation of the transient reserve capacity of each wind turbine before power fluctuations occur. By having this information readily available and pre-planned, the controller can quickly dispatch the necessary reserve capacity when power deficiencies arise, ensuring rapid response without needing external power sources.
3Reliability
If transient reserve capacity is utilized, then power output stability is improved, but control complexity increases
Solution Approach 1:
The controller continuously monitors the actual power output of the wind farm and compares it with the target power output. Based on this feedback, the controller calculates the power deficiency or surplus and adjusts the power output of individual wind turbines by dispatching their transient reserve capacity, creating a closed-loop control system that automatically maintains power stability.
Solution Approach 2:
The invention divides the wind farm into individual wind turbines, each with its own calculable transient reserve capacity. The controller manages each turbine independently based on its specific characteristics and current operating conditions, allowing for granular control that simplifies the overall management compared to treating the wind farm as a single undifferentiated unit.
Data Source
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AI summary
A system for wind power dispatch is provided. The system includes a wind farm controller (14) for controlling operation of wind turbines (16) in a wind farm (10) and regulating real time power output of the wind farm (10). The system also includes a wind power dispatch management system (12) for computing a difference between a predefined power output and the real time power output and dispatching a transient wind farm reserve (24) to reduce the difference or, if the transient wind farm reserve (24) is insufficient to reduce the difference, additionally or alternatively dispatching a storage reserve (26) to reduce the difference.