Solar energy resources are very abundant. According to relevant statistics, the energy of the sun's radiation on the earth's surface can reach 17 trillion kilowatts, which is 35,000 times the current annual energy consumption of the world. Solar power is a useful supplement to traditional power generation, given its importance to environmental protection and economic development. The western region of China is vast, severely cold, and the terrain is diverse. It is a decentralized way of living. In Northwest China, Tibet, and Yunnan, solar energy resources are more abundant, and the area of solar energy resources that can be used exceeds 95%. In addition, photovoltaic power generation has the advantages of sufficient cleanliness, absolute safety, relative comprehensiveness, definite long life and maintenance-free, resource adequacy, and potential economics. It has an important position in long-term energy strategies. It is widely used. I. Status of inspection and maintenance of the photovoltaic industry Solar photovoltaic power generation systems are mainly divided into centralized and distributed. Centralized power stations generally occupy a large area, and are mostly built in northwestern China and some remote areas. The natural environment is harsh; the conversion rate and service life of solar panels determine the value of photovoltaic systems. Important factor. With the use of time, photovoltaic modules will inevitably have hot spots, which will not only affect the amount of power generated but also accelerate module failure. However, these photovoltaic power stations brought a lot of operational and maintenance pressures after being connected to the grid, such as conventional equipment inspection and photovoltaic panel inspection. Traditional operation and maintenance methods use manual inspections, which are inefficient, and most often determine equipment failures based on the experience of operation and maintenance personnel, which is prone to deviations. At the same time, in the harsh natural environment in remote areas, the inspection of photovoltaic power plants is very difficult and dangerous. UAVs currently used in photovoltaic power plants are mostly concentrated in the operation and maintenance of power plants. The method of three-dimensional and elevation operation of the drone effectively adapts to the characteristics of the wide distribution of photovoltaic power stations and various application types. The photovoltaic inspection of the drone saves manpower to a certain extent and improves operation and maintenance efficiency. Second, photovoltaic panels The main cause of the hot spot phenomenon is that some photovoltaic cells have been affected by shadows for a long time, causing their output current to be less than the output current of normal working photovoltaic cells. According to KLU's law, the shielded photovoltaic cell panel will become a load in a series branch with the negative voltage at both ends. The photovoltaic cell itself has a certain series of resistance. When it becomes a load, the current flowing through it will generate heat in the photovoltaic panel. The heat accumulation can reach a temperature of up to 200 degrees Celsius. Such a high temperature will damage the physical structure of the photovoltaic panel. And cause irreversible permanent damage. By combining visible data and infrared data, the drone can quickly and conveniently check the surface of the photovoltaic panel for damage and stains, and intuitively observe the working state of the photovoltaic panel through infrared thermal information. UAV uses infrared data to quickly identify and analyze hot spots and other hidden dangers Third, step-up transformer During the patrol inspection task of the booster tower, check the transformer oil leakage phenomenon, check the connection point contrast temperature through the infrared device, and save the detection data. After the data is recorded, it is reflected to the maintenance personnel in time, which is convenient for the maintenance personnel to conduct targeted troubleshooting and maintenance, and ensure the safety of power transmission.
