Photovoltaic board anti-shading circuit for power transmission line monitoring
A technology for power transmission lines and photovoltaic panels, applied in the field of infrastructure engineering, can solve problems such as affecting the normal operation of photovoltaic units, affecting the power generation efficiency of solar panels, and shortening the life of photovoltaic modules by hot spot effect of photovoltaic panels. Stable work and improved output
Pending Publication Date: 2019-04-26
湖北唐人科技有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that when a photovoltaic unit in the solar panel circuit is shaded, it will greatly affect the normal operation of other photovoltaic units, seriously affect the power generation efficiency and the stability of the solar panel power supply, and the photovoltaic panel often appears to be shaded. The negative phenomenon will lead to the technical problem of hot spot effect and shortened service life of photovoltaic modules
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[0028] A photovoltaic panel anti-shading circuit for power transmission line monitoring, which includes a photovoltaic unit 1, a switch tube 2 connected in parallel with the photovoltaic unit 1, a voltage sensor 3 connected in parallel with the photovoltaic unit 1, and a controller 4, the controller 4 The switching off of the switch tube 2 can be controlled according to the voltage value at both ends of the photovoltaic unit 1 detected by the voltage sensor 3 .
[0029] The switch tube 2 is an IGBT tube, the controller 4 is an IGBT tube controller, and the IGBT tube controller is connected to the IGBT tube through a PWM control circuit 8 to control the on-off of the IGBT tube. The voltage sensor 3 is connected to the IGBT tube through an A / D converter. 7 is connected with controller 4 data ends.
[0030] It includes a main circuit formed by at least two photovoltaic units 1 connected in series.
[0031] Including a solar panel circuit formed by parallel connection of at least...
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The invention discloses a photovoltaic board anti-shading circuit for power transmission line monitoring. The circuit comprises a photovoltaic unit, a switching tube connected with the photovoltaic unit in parallel, and a voltage sensor connected with the photovoltaic unit in parallel, the circuit further comprises a controller, and the controller can control the switching tube to be turned off according to voltage values at the two ends of the photovoltaic unit detected by the voltage sensor. The circuit aims at solving the technical problems that after one photovoltaic unit in a solar cell panel circuit is shielded, normal work of other photovoltaic units is greatly affected, power generation efficiency and solar cell panel power supply stability are seriously affected, the photovoltaicboard often has the shading phenomenon, and therefore a photovoltaic module generates the hot spot effect, and the service life is shortened.
Description
technical field [0001] The invention belongs to the field of infrastructure engineering, and in particular relates to a photovoltaic panel anti-shading circuit for monitoring power transmission lines. Background technique [0002] With the continuous construction of the smart grid, the scale of the power grid is also constantly expanding. In order to improve the ability of the transmission line to resist external damage, the video monitoring system of the transmission line is widely used. With the promotion of the system, the reliability of power supply has been widely concerned. The photovoltaic panels used for power supply are often blocked by the tower materials due to problems such as installation position and illumination angle, resulting in the shading problem of photovoltaic panels, which seriously affects the power generation efficiency and affects the power supply. reliability. Moreover, the shading phenomenon often occurs on the photovoltaic panels will cause the ...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/21137
Inventor 周大兵龚政熊学斌史振利单知非
Owner 湖北唐人科技有限公司