PV Inverter-Based Test Triggering for Photovoltaic Units
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Solution Overview
Problem
Current photovoltaic power station testing technologies are limited by environmental conditions, requiring dedicated monitoring apparatuses that increase operation and maintenance costs, and often necessitate manual triggering of tests, which can be inefficient.
Innovation Solution
A method and apparatus that utilize photovoltaic inverters to provide working parameter values to a control center, allowing it to determine suitable testing conditions without the need for additional monitoring equipment, enabling automatic and continuous testing based on preset thresholds and user instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If environmental monitoring apparatus is deployed to monitor environmental status and trigger testing, then testing accuracy is improved, but operation and maintenance costs increase
Solution Approach 1:
The photovoltaic inverter is made to serve multiple functions: it not only converts direct current to alternating current but also monitors environmental parameters and triggers testing automatically. This eliminates the need for separate environmental monitoring apparatus while maintaining testing accuracy.
Solution Approach 2:
The photovoltaic inverter monitors its own working parameters and environmental conditions, and automatically triggers testing when conditions are suitable. This self-service capability eliminates the need for external monitoring devices and manual intervention, reducing operation and maintenance costs.
2Productivity
If environmental monitoring apparatus is deployed to enable automatic testing triggering, then testing efficiency is improved, but device complexity increases
Solution Approach 1:
The photovoltaic inverter is designed to perform multiple functions including power conversion, environmental monitoring, and automatic testing triggering. This multi-functionality improves testing efficiency by enabling automatic triggering while avoiding the need for additional monitoring devices that would increase system complexity.
3Measurement precision
If testing is performed under specific environmental conditions only, then measurement precision is improved, but productivity decreases
Solution Approach 1:
The system continuously monitors environmental parameters and working parameters, providing feedback to the control center. When conditions meet the preset thresholds, testing is automatically triggered. This feedback mechanism ensures testing accuracy is maintained while maximizing testing frequency by automatically identifying suitable testing opportunities.
Solution Approach 2:
The control center presets environmental parameter thresholds and working parameter thresholds in advance. When monitored parameters reach these pre-set conditions, testing is automatically triggered without manual intervention. This preliminary setup enables the system to proactively identify and execute testing at optimal moments, improving both accuracy and productivity.
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
This approach reduces operation and maintenance costs by eliminating the need for dedicated monitoring apparatuses and automating the testing process, ensuring efficient and timely assessment of photovoltaic units regardless of environmental conditions.
Implementation Method 1
the photovoltaic panel can receive solar irradiation and convert received luminous energy into electric energy
Data Source
Figure 1~2
Figure 3
Figure 4A
AI summary
A detection condition determining method, an apparatus, and a photovoltaic system are provided. The method includes: A control center obtains a working parameter value of a target photovoltaic unit in a first time length closest to a current time point (S301), where the working parameter value of the target photovoltaic unit may be provided for the control center by a photovoltaic inverter coupled to the target photovoltaic unit. The control center detects the target photovoltaic unit if the control center determines, based on the working parameter value, that an environmental parameter value of the target photovoltaic unit meets an environmental parameter threshold (S302). Using the method helps reduce operation and maintenance costs of a photovoltaic power station.