Photovoltaic assembly surface pollution degree determination device

Abstract

The invention provides a photovoltaic assembly surface pollution degree determination device comprising the following units: a glass substrate attached to the photovoltaic assembly surface; a reactioncoating coated on one side of the glass substrate so as to form a structure laminating pollutants on one surface, wherein impedance changes can be formed through making contacts with the pollutants;a signal processor connected with the reaction coating so as to transmit impedance change signals, wherein the processor is used for calculating and processing the reaction coating signals, determining an impedance value variance according to the pollutant lamination impedance changes, and outputting a polluted / non-polluted determination signal. The photovoltaic assembly surface pollution degree determination device can sense the photovoltaic assembly surface impedance changes so as to effectively determine the assembly surface lamination pollution degrees, thus ensuring a proper washing period for the solar generating assembly.

Description

technical field [0001] The present invention relates to a device for measuring the degree of pollution on the surface of a photovoltaic module, and in more detail to a device for measuring the degree of pollution on the surface of a photovoltaic module, which can sense the impedance change of the surface of a photovoltaic module and effectively measure the degree of pollution accumulated on the surface of the module , while ensuring a suitable washing cycle for components in solar power generation. Background technique [0002] Recently, due to the depletion of existing energy sources such as oil and coal, there has been a shortage of resources, and attention has been paid to alternative new energy sources. As an unlimited energy source, solar power generation technology that generates electricity from the sun is attracting attention. [0003] In general, solar power generation technology is applied to various forms of equipment that require electric energy, such as solar po...

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Problems solved by technology

[0005] However, the surface of the photovoltaic module is covered with toughened glass, and dust is often accumulated on the surface due to static electricity and flying dust, so that the surface of the photovoltaic module used to collect sunlight is polluted, and the power generation of the photovoltaic module is reduced by about 10-15% inefficiency

[0006] In order to solve the above-mentioned problems, the conventional technology disclosed in Korean Registered Patent Publication No. 1126339 (2012.03.06.) discloses a solar cell pollution prevention structure, including: a support plate arranged on the upper end of the pillar; On the support plate, a light sensor for measuring the external illuminance; a solar cell panel is installed on the front, and the back is formed of a light-transmitting material. A plurality of power generation boards arranged on the edge of the support board; a motor connected to the rotation shaft of the power generation board to make the power generation board open or fold; a charger for storing the power output by the solar cells of the power generation board a battery; a light emitting member that emits light by means of power supplied by the rechargeable battery; and a control section that controls charging and discharging of the motor and the rechargeable battery based on the illuminance measured by the photosensor, and, the When the plurality of power generation panels are folded, the side ends are in close contact with each other to prevent the penetration of moisture or dust that pollutes the surface of the solar cell, thereby preventing the low power generation efficiency of the solar cell.

[0007] However, the photovoltaic modules of the above-mentioned prior art form a simple overall opening and closing structure, which makes the structure of the product complicated, and the manufacturing and equipment costs of the product are high, so it is difficult to apply to places requiring a large amount of electrical production such as solar power stations, and Products that cannot be applied to installed photovoltaic modules, reducing actual utility

[0008] Moreover, the above-mentioned prior art forms a structure that can be opened or folded according to the illuminance of the external environment. Therefore, the pollution of the photovoltaic module can only be temporarily prevented in the folded state of the device, but it is still exposed to pollution such as dust in the process of solar power generation. Factors, can not block the surface pollution of photovoltaic modules, thus, too long time will make the power generation efficiency of photovoltaic modules low

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