Application of monitoring and sensor technology in

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Monitoring of photovoltaic power generation equipment and application of sensor technology

in recent years, the photovoltaic industry has developed rapidly. Compared with other power generation methods, solar photovoltaic power generation has obvious advantages such as no fuel consumption, no noise, no pollution and no regional restrictions. At the same time, driven by the government, the development speed of the photovoltaic industry has been gradually accelerated. A new goal has been set in the 13th five year plan. By 2020, the total installed PV capacity in China will reach more than 105gw, which still has more than 62gw of growth space compared with the cumulative installed capacity of about 43gw in 2015

Japanese photovoltaic power station cleaning robot, data figure

for example, in the application of photovoltaic power generation equipment, current sensors are widely used. For example, as more and more distributed photovoltaic power generation systems are connected to power distribution, it is often necessary to select corresponding current sensors to detect the DC component of current, so as to minimize the adverse impact of photovoltaic power supply on power distribution

at present, the closed-loop current sensor is generally used for DC component detection. The closed-loop current sensor has the characteristics of high precision, small linear error and small external interference. The detection of DC component is different from the general current detection. The amplitude of DC component superimposed on the AC signal is very small, and the requirements for the sensor will be higher

on the other hand, in the development of photovoltaic industry, the problem that the dust on the surface of solar panels affects the power generation efficiency is becoming more and more obvious. Relevant data show that in the field of solar photovoltaic power generation, when the surface area of photovoltaic panels is gray, it will cause 5% to 15% power generation loss. However, the current manual scrubbing method is still the main cleaning method for PV panels in China, which is time-consuming and costly. Among them, the battery factories in Shenzhen, which mainly make low-end products, have closed down nearly half of their efforts and are inefficient

advantages of new wall insulation materials recently, relevant domestic electrical companies independently developed a new solar panel cleaning robot. The robot can automatically detect and clean the battery board to maintain a good power generation state. It is understood that the robot can realize automatic monitoring and startup. Driven by the wheels, it rolls along the tracks at both ends of the battery board and crawls forward slowly. There is a spiral brush inside it. It is understood that it can sweep away the dust with low recycling rate of waste plastics in China without watering

it is understood that the robot is equipped with a sensor, which can detect the surface of the battery board and give an alarm when a hot plate is found. At the same time, through the cooperation of a variety of sensors and controllers, it can detect and adjust the position and posture of cleaning functional components in real time, so as to adapt to bumpy roads and uneven photovoltaic panels. The R & D party said that after half a year of experimental data, the power generation of the robot was increased by more than 8% by using the solar panels cleaned by the robot in time

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