Photovoltaic panel optical fiber temperature measurement method diagram

Are fibre-optic sensor-based solar PV panel temperature monitoring effective?

Advanced fibre-optic sensors offer distinct advantages of greater accuracy, a more comprehensive range, and a very high sampling rate. The present experimental work focuses on fibre Bragg grating sensor-based solar PV panel temperature monitoring.

What is a temperature monitoring system based on optical fiber fluorescence?

This method of optical connection is also mentioned in the article “Temperature Monitoring System of Electric Apparatus Based On Optical Fiber Fluorescence” . It can be assumed that such a sensor allows measurements from low temperatures (use of luminescence) to temperatures around 1000°C (use of blackbody radiation).

How do optical fiber sensors measure temperature?

These methods measure phase shift between two coherent beams that have travelled the same path in one or two optical fibers. This type of sensor can simultaneously measure different physical quantities, including temperature, since the mechanical parameters of the optical fiber changes with the temperature.

What is the method of measurement using optical fiber techniques?

The method of measurement using optical fiber techniques is based on several fundamental principles. Each measurement method has its specific uses in the range of measuring temperatures, accuracy, etc. (see Table 1). The table shows basic advantages and disadvantages of individual fiber methods. Table 1.

How is temperature measured on a solar panel?

The temperature at three points is measured using the FBG sensor. This three-point measurement is selected based on the pre-measurement experiments conducted on the same panel with more diagonal locations. Researchers can vary the number of sensor locations based on the solar panel type and size.

What temperature is a blackbody based optical fiber based method suitable for?

However, the following findings can be summarized from this article. The blackbody- (greybody-) based method is suitable for temperatures operating from 500°C to 2000°C using commonly available optical fibers.