Photovoltaic Panel Cooling for Stable Power Ramp Control
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Solution Overview
Problem
Photovoltaic systems face challenges in maintaining stable output power characteristics due to variations in solar irradiation, leading to high power ramp rates that can disrupt grid stability and result in power rejection by the grid.
Innovation Solution
A method and device that optimize output power characteristics by assigning a portion of the generated power to cooling the photovoltaic panels, thereby reducing ramp rates and preventing power rejection, while also allowing for efficient energy usage and reduced system costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If photovoltaic systems operate without power optimization, then power generation capacity is maximized, but output power characteristics deteriorate with large ramp rates causing grid stability issues
Solution Approach 1:
The controller performs preliminary action by predicting future power generation based on historical data and weather forecasts, then pre-adjusts the power output schedule to prevent large ramp rates before they occur. This proactive approach maintains both high power generation capacity and stable output characteristics.
Solution Approach 2:
The system dynamically adjusts the power output schedule in real-time based on changing weather conditions, actual power generation performance, and grid requirements. This dynamic optimization allows the system to adapt to varying conditions while maintaining stable output power characteristics and maximizing energy yield.
2Stability of the object's composition
If energy storage systems are used to reduce ramp rates, then output power characteristics improve, but system cost and complexity increase
Solution Approach 1:
The photovoltaic system serves itself by using its own generated power to meet its ramp rate control needs. The controller optimizes the power schedule using prediction algorithms and real-time data, eliminating the need for external energy storage systems or complex control infrastructure. This self-service approach reduces system complexity and cost while maintaining stable output characteristics.
3Stability of the object's composition
If power is curtailed to reduce ramp rates, then output power characteristics improve, but energy yield is lost
Solution Approach 1:
The system performs preliminary action by predicting power generation patterns and pre-optimizing the power schedule to smooth ramp rates. Instead of curtailment, the controller proactively schedules power delivery to match grid requirements, maintaining stable output characteristics while capturing nearly all generated energy through intelligent timing and distribution.
Solution Approach 2:
The controller changes operational parameters by adjusting the power delivery schedule based on predicted weather conditions, historical performance, and grid demands. This parameter optimization allows the system to maintain stable output characteristics and maximize energy yield by delivering power when it is most needed and most efficiently utilized.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively reduces ramp rates, prevents power rejection by the grid, and enhances energy yield by cooling the photovoltaic panels, thereby improving the overall efficiency and cost-effectiveness of photovoltaic systems.
Implementation Method 1
a second amount of power to cooling of the one or more photovoltaic panels
Data Source
Figure 1A~1D
Figure 2
Figure 3~4
AI summary
A method for optimizing output power characteristics of a photovoltaic system (1) comprising one or more photovoltaic panels (10), the method comprising: obtaining at least data representative of power ( PtPV) generated by the one or more photovoltaic panels (10) in function of time, and assigning, based on at least said data, a first amount of power (Ot) to outputting by the photovoltaic system (1) and a second amount of power ( Ptcooling) to cooling of the one or more photovoltaic panels (10), so as to optimize the output power characteristics of the photovoltaic system (1).