A device and method for fine cleaning of photovoltaic components in large photovoltaic power stations

Abstract

The invention provides a fine cleaning device and method for photovoltaic modules of a large photovoltaic power station. The device comprises a water tank. A water outlet of the water tank is connected with a first water conveying pipe. The first water conveying pipe extends to the position above the region where photovoltaic module strings are arranged. The first water conveying pipe is connected with a water pipe for flushing in a leading mode. A water return groove is formed below the photovoltaic modules strings. The water return groove is connected with a waste water recycling pool. The waste water recycling pool is connected with the water tank through a filter. Voltage transmitters and current transmitters on the photovoltaic modules strings are electrically connected with a controller, and the controller is further electrically connected with an environment monitoring instrument. A controllable electromagnetic valve is electrically connected with the controller as well. The invention further comprises the method for cleaning the photovoltaic modules through the fine cleaning device for the photovoltaic modules of the large photovoltaic power station. By means of the fine cleaning device and method, cleaning and dedusting of the photovoltaic modules are facilitated, cleaning efficiency is high, the cleaning time is shortened, water is saved, and the environment is protected beneficially; meanwhile, workload is lowered for later-period operation maintenance personnel, and the operation reliability of the photovoltaic power station is improved.

Description

technical field [0001] The invention relates to a large-scale photovoltaic power station, in particular to a fine cleaning device and method for photovoltaic components of a large-scale photovoltaic power station. Background technique [0002] As a form of solar power generation, photovoltaic power generation is widely used more and more. With the development of related technologies in the photovoltaic power generation industry, photovoltaic power stations have gradually developed from small-scale demonstration applications to large-scale photovoltaic power station applications. In November 2014, the State Council issued the "Energy Development Strategic Action Plan (2014-2020)", which clearly defined the development goals: by 2020, the total primary energy consumption will be controlled at about 4.8 billion tons of standard coal, and the total coal consumption will be controlled Around 4.2 billion tons. Non-fossil energy accounts for 15% of primary energy consumption. Im...

AI Technical Summary

Problems solved by technology

These two cleaning schemes focus on large-scale dust removal of photovoltaic modules. The first method consumes more water; the second method requires a large investment in labor costs, and manual dust removal may have potential safety hazards.

There are mainly the following disadvantages for the cleaning of photovoltaic modules in current large-scale photovoltaic power plants: (1) How to determine the appropriate cleaning time, regular cleaning may clean components that do not need dust removal, which will inevitably increase water and labor costs; (2) Large-scale unified cleaning causes Waste of water resources will increase the cost of operation and maintenance of the power station in the later stage; (3) Using the method of wiping to remove dust may cause damage to the sealing material of the photovoltaic module and reduce the reliability of the photovoltaic module

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