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Online solar power station PID recovery system

A recovery system and solar cell technology, applied in the field of on-line solar power station PID recovery system, can solve the problem of not being able to fundamentally remove the PID phenomenon of solar power station, and achieve the effect of preventing misjudgment, ensuring normal operation, and realizing automatic control.

Inactive Publication Date: 2016-10-05
SHANGHAI ZHIWEI ENVIRONMENTAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them: battery technology and module technology can only slow down the PID phenomenon of solar power plants to a certain extent, but cannot fundamentally eliminate the PID phenomenon of solar power plants

Method used

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  • Online solar power station PID recovery system
  • Online solar power station PID recovery system

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 , figure 2 In the shown embodiment, the online solar power plant PID recovery system includes several solar battery arrays 1, several combiner boxes 2, DC power distribution cabinets 3, inverters 4, AC power distribution cabinets 5, transformers 6, power grids 7 and PID recovery device 9, a combiner box 2 is connected with several solar cell arrays 1, and the solar cell arrays 1 are connected in parallel with each other, and a DC power distribution cabinet 3 is connected with a plurality of combiner boxes 2, and the combiner boxes 2 are connected in parallel with each other, and the DC power distribution cabinet 3. The inverter 4, the AC power distribution cabinet 5, the transformer 6 and the power grid 7 are connected in sequence, and the PID recovery device 9 includes a high-voltage power supply 19, a relay 17, a tou...

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PUM

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Abstract

The invention discloses an online solar power station PID recovery system which comprises solar cell arrays, combiner boxes, a DC power distribution cabinet, an inverter, an AC power distribution cabinet, a transformer, a power grid and a PID recovery device. The combiner boxes are connected with the plurality of solar cell arrays; the DC power distribution cabinet is connected with the plurality of the combiner boxes; and the DC power distribution cabinet, the inverter, the AC power distribution cabinet, the transformer and the power grid are sequentially connected. The PID recovery device comprises a high-voltage power supply, a relay and a controller. The DC power distribution cabinet is internally provided with a grounding detection box and a grounding point. The high-voltage power supply is provided with a switch, high-voltage lines and low-voltage lines, wherein the high-voltage lines are connected with the DC power distribution cabinet or the combiner boxes, and the low-voltage lines are connected with frames or supports of the solar cell arrays. The relay is connected with the grounding detection box and the grounding point. The switch and the relay are connected with the controller. The beneficial effects of the online solar power station PID recovery system are that the recovery system ensures normal working of grounding detection, carries out power recovery automatic control, does not influence normal use of a solar power station, and is safe and reliable to use.

Description

technical field [0001] The invention relates to the technical field related to photovoltaic power generation, in particular to an online solar power station PID recovery system. Background technique [0002] The PID phenomenon of solar power plants is the attenuation of power generation of solar cell modules during outdoor applications. The PID phenomenon of solar power plants can be alleviated and solved from the perspectives of battery technology, module technology, and system structure. Among them: battery technology and module technology can only slow down the PID phenomenon of solar power plants to a certain extent, but cannot fundamentally eliminate the PID phenomenon of solar power plants. The system structure can fundamentally eliminate the PID phenomenon of solar power plants. Negative grounding is a scheme, which can only be applied to power plant structures with transformers, and the negative grounding scheme has a certain impact on the power generation of solar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCY02E10/56
Inventor 刘志刚
Owner SHANGHAI ZHIWEI ENVIRONMENTAL TECH
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