Photovoltaic Module Fault Loss Calculation Using Area and Impact Factors
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Solution Overview
Problem
Existing methods fail to accurately quantify power generation capacity loss in photovoltaic modules due to faults, hindering effective operation and maintenance strategies.
Innovation Solution
A method and apparatus that calculate power generation capacity loss by acquiring fault information, determining area proportions and influence coefficients, and quantifying the difference between actual and theoretical power generation capacities to provide a comprehensive loss assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inspection methods are used to assess photovoltaic module faults, then operational simplicity is maintained, but measurement precision of power generation capacity loss deteriorates
Solution Approach 1:
The patent segments the power generation capacity loss calculation into distinct components: fault area proportion calculation, influence coefficient determination, and final loss computation. This segmentation allows each component to be calculated independently using specific formulas, improving measurement precision while maintaining manageable system complexity through modular calculation steps.
Solution Approach 2:
The patent introduces intermediary parameters (fault area proportion and influence coefficient) that mediate between the raw fault detection data and the final power generation capacity loss measurement. These intermediaries enable precise quantification by breaking down the complex measurement into manageable computational steps, resolving the contradiction between precision and complexity.
2Measurement precision
If comprehensive fault analysis is performed on photovoltaic modules, then power generation capacity loss determination accuracy is improved, but operation and maintenance time consumption increases
Solution Approach 1:
The patent performs preliminary calculations of fault area proportions and influence coefficients that can be stored and reused for similar fault conditions. This preliminary action reduces the time required for comprehensive fault analysis by avoiding redundant calculations, while still maintaining high determination accuracy through the use of these pre-computed parameters.
Solution Approach 2:
The patent transforms the comprehensive fault analysis into a parameter-based calculation system where complex physical assessments are converted into mathematical parameters (area proportions, influence coefficients). This parameter transformation enables rapid computation of power generation capacity loss without sacrificing accuracy, resolving the time-accuracy trade-off.
3Measurement precision
If detailed fault information is collected from photovoltaic modules, then calculation accuracy of power generation capacity loss is improved, but information processing complexity increases
Solution Approach 1:
The patent extracts only the essential fault information parameters needed for accurate power generation capacity loss calculation, specifically the fault area proportion and influence coefficient. By taking out only these critical parameters from the complete fault information set, the system achieves high calculation accuracy while reducing information processing complexity through selective data extraction.
Data Source
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AI summary
Provided in the present invention are a method and apparatus for calculating a power generation capacity loss of a photovoltaic assembly, and an electronic device. The method comprises: acquiring fault information of a photovoltaic assembly, and calculating an area proportion and a power generation capacity loss influence coefficient that correspond to the fault information; calculating the difference between an actual power generation capacity of a photovoltaic string in which the photovoltaic assembly is located and a theoretical power generation capacity, and taking same as a power generation capacity loss value of the photovoltaic string; according to the power generation capacity loss value of the photovoltaic string, and the area proportion and the power generation capacity loss influence coefficient that correspond to the fault information, calculating an assembly power generation capacity loss value corresponding to the fault information; and calculating a total power generation capacity loss value of the photovoltaic assembly on the basis of the assembly power generation capacity loss value. By means of the present invention, a power generation capacity loss of a photovoltaic assembly caused by a fault can be calculated, thereby solving the problem of when a photovoltaic assembly has a fault, it being necessary to determine a power generation capacity loss of the photovoltaic assembly caused by the fault in order to provide a reference for operation and maintenance work.