Automated PV Commissioning via Local Controller Self-Test
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Solution Overview
Problem
The commissioning and inspection processes for photovoltaic (PV) module systems are often manual and time-consuming, requiring significant effort from inspectors and installers, and there is a need for automation to streamline the validation of system configurations against predetermined site designs.
Innovation Solution
A photovoltaic supervisor system that includes a local solar power controller with a processor and memory, capable of receiving site design data, activating and deactivating branch circuits, collecting data from PV modules, and analyzing it to determine conformance with the predetermined design, thereby automating the commissioning and inspection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual commissioning and inspection processes are used for PV module systems, then inspectors and installers can validate system configurations, but the process becomes time-consuming and requires significant manual effort
Solution Approach 1:
The PV module system performs self-validation by automatically comparing its own configuration data with the predetermined site design data. The system uses its integrated controller to collect operational data, perform self-diagnostics, and generate validation reports without requiring continuous human intervention, thereby reducing commissioning time while maintaining validation accuracy.
Solution Approach 2:
The patent replaces manual mechanical inspection processes with automated electronic data collection and analysis. The system uses electronic communication between PV modules, controllers, and commissioning devices to automatically validate configurations, substituting human inspectors with automated diagnostic algorithms that compare system data against design specifications.
2Ease of operation
If automated commissioning systems are implemented, then manual effort is reduced, but the device complexity increases
Solution Approach 1:
The controller in the PV module system performs multiple functions: it manages power conversion, collects operational data from PV modules, performs self-diagnostics, communicates with commissioning devices, and validates system configuration. By integrating these diverse functions into a single multi-functional controller, the system achieves automation without proportionally increasing overall system complexity.
Solution Approach 2:
The patent introduces a standardized communication protocol and data format as an intermediary layer between the PV modules, controllers, and commissioning devices. This intermediary framework enables automated data exchange and validation while providing a simple, uniform interface that masks the underlying complexity of the automated commissioning processes.
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 solution enables efficient automated commissioning and inspection of PV module systems, reducing manual effort and ensuring that the installed systems meet the predetermined design specifications, facilitating faster and more accurate validation and integration with the utility grid.
Implementation Method 1
Photovoltaic (PV) cells, commonly known as solar cells, are devices for conversion of solar radiation into electrical energy
Data Source
AI summary
An electric system includes a local power controller and solar panel system that includes a plurality of solar modules on one or more branch circuits. A method for commissioning the electric system includes an installer using a commissioning device to send and receive information from a remote system and the local power controller performing an automatic self-test of the electric system. The results of the self-test may be packaged with photographs and measurements of the electric system and sent to a remote system where an inspector can inspect the electric system remotely. After receiving approval by the inspector, the local power controller may automatically activate each branch circuit of the electric system and thus enabling the electric system to generate electricity.