Dynamic Feed-In Limit Adjustment for Wind Farms
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Solution Overview
Problem
Wind power installations face limitations in feeding electrical power into the grid due to grid capacity constraints, leading to throttling of power output, which can be inefficient and result in reduced energy generation and grid instability.
Innovation Solution
A method that detects initial feed-in limitations, evaluates the possibility of increasing power limits by redistribution within the electrical supply grid, and adjusts power generation based on criteria such as grid conditions, consumer demands, and penalty costs, allowing for dynamic optimization of power feed-in to avoid unnecessary reduction in wind power generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wind power system feeds in maximum power according to wind availability, then energy production is maximized, but grid stability deteriorates due to exceeding feed-in limitations
Solution Approach 1:
The patent implements dynamic feed-in limitation adjustment by continuously monitoring grid conditions, consumer demands, and wind power availability. The system dynamically optimizes the feed-in power limit rather than using fixed limitations, allowing the wind power system to adapt to changing conditions and maximize energy production while maintaining grid stability.
Solution Approach 2:
The system incorporates feedback mechanisms by detecting grid conditions, consumer demands, and the effects of feed-in power on grid stability. This feedback is used to continuously adjust the feed-in limitation, creating a closed-loop control system that balances energy production with grid stability requirements.
2Reliability
If feed-in power is limited to maintain grid stability, then grid stability is maintained, but energy production is reduced due to throttling
Solution Approach 1:
The system transitions from static feed-in limitations to dynamic adjustment, where the feed-in power limit is continuously optimized based on real-time grid conditions, consumer demands, and wind power availability. This allows the system to maintain grid stability while maximizing energy production at each moment.
Solution Approach 2:
The patent changes the parameter of feed-in limitation from a fixed value to a dynamically adjustable parameter. By continuously optimizing the feed-in power limit based on multiple factors including grid stability requirements, the system achieves better overall performance than fixed limitation approaches.
3Ease of operation
If fixed feed-in limitations are imposed, then grid operator control is simplified, but system adaptability deteriorates due to inability to respond to changing conditions
Solution Approach 1:
The wind power system performs self-adjustment of feed-in power based on detected grid conditions and consumer demands. The system autonomously optimizes its own feed-in limitation without requiring constant external control, thereby maintaining ease of grid operator control while significantly improving system adaptability to changing conditions.
Solution Approach 2:
The system implements dynamic feed-in limitation adjustment that automatically responds to changing grid conditions, consumer demands, and wind power availability. This dynamic approach maintains simplified operator control through automated systems while achieving high adaptability to varying operational conditions.
Data Source
AI summary
A method for feeding in electrical power, using a wind power system including a wind farm, into a grid at a grid connection point is provided. The grid has a distribution grid and a further higher portion of the grid lying hierarchically above the distribution grid. The grid connection point is connected to the distribution grid. The method includes detecting an initial feed-in limitation with respect to the grid connection point. The method includes checking whether the farm power that can be generated from wind by the wind farm is limited by the initial feed-in limitation so that the wind farm is throttled in its power output by the initial power limit. The method includes evaluating whether the initial power limit can be increased by a redistribution of the limitation, increasing the initial power limit to an increased power limit and feeding in electrical power above the initial power limit.