Fluctuating Power Plant Control via Dynamic Setpoint Adjustment
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Solution Overview
Problem
Fluctuating power generation systems, such as wind and photovoltaic systems, cannot be effectively included in providing control reserve due to their discontinuous energy production, making it difficult to determine their maximum available power and control them to meet constant control power bands.
Innovation Solution
Determine the actual power value of the power generation system, which represents the maximum power it can deliver under specific conditions, and regulate its current output based on a control value calculated from the difference or sum of this actual power and a specified constant control power, allowing for continuous provision of negative or positive control power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fluctuating power generation systems operate at variable output based on external conditions, then energy production follows natural variations, but the ability to provide stable control power deteriorates
Solution Approach 1:
The system dynamically adjusts the operating point of fluctuating power generation systems based on real-time conditions while maintaining a controlled distance from maximum power. The control value is continuously calculated as the sum or difference of actual power and constant control power, enabling the system to adapt to varying wind speeds, solar radiation, and grid requirements while providing stable control power.
Solution Approach 2:
The invention changes the control parameter from fixed operating points to dynamically calculated control values. By continuously determining the control value based on actual power and constant control power requirements, the system transforms from static operation to dynamic parameter adjustment, allowing fluctuating systems to provide reliable control power despite variable production conditions.
2Power
If the operating point is reduced to provide control reserve, then control power becomes available, but the maximum available power determination becomes unreliable
Solution Approach 1:
The system implements continuous feedback by monitoring actual power output and using it to calculate the control value. The control value is derived from the sum or difference of actual power and constant control power, creating a closed-loop system that continuously adjusts operation based on real-time measurements, thereby maintaining reliable maximum power determination even when operating below maximum capacity.
3Stability of the object's composition
If constant control power bands are required, then grid stability is maintained, but fluctuating systems cannot meet the constant band requirement
Solution Approach 1:
The invention enables fluctuating power generation systems to perform multiple functions: generating energy based on natural variations and simultaneously providing stable control power. By calculating control values as the sum or difference of actual power and constant control power, the system universally applies to both positive and negative control energy requirements, making fluctuating systems adaptable to various grid stability needs.
Data Source
Figure 1~2
AI summary
The method involves determining an actual power value. The current power output of the power generation plant is controlled as a function of a position value continuously determined from the sum or difference of the actual power value and a predetermined constant control power.