Photovoltaic power station sweeping and monitoring integrated management system

Abstract

The invention belongs to the field of intelligent sweeping, and specifically relates to a photovoltaic power station sweeping and monitoring integrated management system comprising a dust deposition detection and early warning module, a monitoring module, an intelligent sweeping robot cluster and a sweeping benefit evaluation module. The dust deposition detection and early warning module judges the dust deposition state through operation parameters of a photovoltaic array and outputs an early warning signal when the dust deposition state reaches a dust deposition threshold state. The monitoring module sends a sweeping instruction to the intelligent sweeping robot cluster when receiving the early warning signal, and optimizes the sweeping process according to the received operation data of the intelligent sweeping robot. The intelligent sweeping robot cluster controls full-automatic cleaning of the photovoltaic array according to the cleaning instruction and sends operation data to the monitoring module. The sweeping benefit evaluation module judges the sweeping effect according to the change of the operation parameters of the photovoltaic array before and after sweeping, and determines the optimal sweeping frequency in combination with the sweeping benefit data of the photovoltaic array. According to the scheme, deposited dust sweeping is carried out on the photovoltaic array with the advantages of less manpower, low cost and intelligence, and meanwhile the operation and maintenance level of a photovoltaic power station is improved.

Description

technical field [0001] The invention relates to the technical field of intelligent cleaning, in particular to an integrated management system for cleaning and monitoring of a photovoltaic power station. Background technique [0002] Since the oil crisis in the 1970s, photovoltaic power generation has developed rapidly around the world due to its inexhaustible, clean and pollution-free characteristics. As of June 2020, my country's installed capacity of solar power generation has reached 220 million kW, a year-on-year increase of 16.4%, accounting for 10.7% of the total installed capacity, the photovoltaic industry has ushered in a period of rapid development, and still has huge development potential and bright application prospects in the future. With the rapid development of the photovoltaic industry, dust accumulation on photovoltaic arrays has become one of the most severe challenges for the operation and maintenance of photovoltaic power plants. Studies have shown that th...

AI Technical Summary

Problems solved by technology

The hazards brought by the dust accumulation of photovoltaic arrays to the photovoltaic power generation system mainly include: reduced power generation, irreversible corrosion, hot spot effect, etc. The dust accumulation causes its reflection, scattering and absorption of solar radiation, reducing the penetration of solar radiation. The excessive rate reduces the amount of solar radiation received by the photovoltaic array, resulting in a decrease in its power generation. At the same time, the acid and alkaline substances in the dust deposits are prone to chemical reactions with the moisture in the air, resulting in irreversible damage to the glass cover of the module. Corrosion, and, dust accumulation will also form a thermal insulation effect on the surface of the module, and long-term shading will easily form hot spots, which will endanger the normal operation of photovoltaic panels

[0003] The traditional cleaning methods use simple devices such as mops, rubber scrapers, and soft brushes, which are inefficient and difficult to meet the cleaning needs of large-scale photovoltaic power plants; while using high-pressure water guns, cleaning vehicles and other tools, the cleaning cost is high for water-deficient areas. Therefore, It is the general trend to find a low-cost and intelligent photovoltaic array cleaning technology to solve the problem of photovoltaic ash accumulation and improve the operation and maintenance level of power stations

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