Solar Panel Fault Detection

Solar panel failure detection by infrared uas digital photogrammetry.

Solar panel fault detection. The result is the module near which the fault occurred. There are some string inverters available now with built in arc fault detection. The z200 pv analyzer has a build in ground fault detector that can measure the position of a ground fault in a solar pv system. The condition monitoring and fault detection in large scale solar farms is essential to ensure the longevity of equipment and maximized power yield.

However process history based methods require the availability of a relevant dataset. This paper tries to analyze and calculate the reduction of efficiency for faults associated with solar pv cell and modules. The reliability of pv modules has always been one of the important parameters for. A solar module connects several solar cells and places them into a rigid enclosure.

However these do not detect and isolate all types of dc arc faults listed above. A comprehensive monitoring system can benefit the system operator to better understand the way the solar energy system is. Besides different fault detection procedures are also discussed that are adopted worldwide. 2013 used a bayesian neural network and polynomial regression to predict the effect of soiling in large scale pv system.

Multiply the number of power optimizers in the string by the percentage value. A case study infrared thermal photogrammetry is an attractive solution for the diagnosis of photovoltaic systems. Traditional systems often require high end drones and expensive cameras but more recently low cost thermal sensors on board of small scale drone platforms. 2014 proposed a fault detection approach based on fuzzy logic to detect possible solar panel abnormalities.

Monitoring technology is able to display information ranging from energy generated by the solar panels to real time data to immediate fault detection and troubleshooting to energy yield data over a set amount of time. The value of the isolation resistance in kohm indicates whether the fault is at dc or dc 0 indicates the fault is at dc 100 indicates the fault is at dc using the screen identify the fault source area. Typically moisture in the morning will provoke solar system ground faults and strings are down until the fault dries up in the sun. This makes pv ground fault troubleshooting difficult.

The large scale solar farms comprise of thousands of solar panels that are spread over many hectares of land. Once an arc is detected the dc circuit at the inverter will be isolated.