Photovoltaic weather station sensor

Because weather conditions directly affect the power generation of photovoltaic power stations, the core parameters of photovoltaic power station performance evaluation cannot be separated from accurate meteorological data. In view of this, each photovoltaic power station monitoring system needs a set of meteorological monitoring sensors to calculate the core evaluation indicators of the power station, such as power station efficiency, effective working time, etc. In fact, in the weather station of the photovoltaic system, choose the appropriate meteorological sensors (such as temperature sensors and solar radiation inclination sensors, etc.). It can fully cover the assessment requirements of the weather station.

The photovoltaic weather station is composed of meteorological sensors and their accessories, supports, power supply equipment, data collectors and other accessories, which are used to process and store measured meteorological data. These sensors are installed in a specified manner, and their coordinates and configurations can be read by the plant monitoring system.

The accuracy of meteorological data is the key to power station performance evaluation. However, in the performance evaluation of the power station, generally do not use sensors unrelated to power generation, such as humidity sensors, air pressure sensors, etc. Use temperature sensors frequently.

For example, on the backplane of the module, the temperature sensor is usually installed directly on the back of the photovoltaic module (called the backplane temperature sensor) to measure the temperature of the battery in the module. In this measurement method, a heat exchange model is used to convert the temperature of the backplane of the module into the temperature of the battery inside the module. During the conversion process, it is also necessary to input the ambient temperature, wind speed and wind direction for correction.

In addition, the photovoltaic weather station will also be equipped with ambient temperature sensors to monitor the air temperature around the actual operating array.