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PID recovery system for solar power station

A recovery system and solar cell technology, applied in the direction of photovoltaic power generation, electrical components, photovoltaic modules, etc., to achieve the effect of improving the scope of application, power recovery, and improving the safety and reliability of use

Active Publication Date: 2014-07-23
SHANGHAI ZHIWEI ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery process and component process can only be slowed down to a certain extent, but cannot be fundamentally eliminated

Method used

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  • PID recovery system for solar power station
  • PID recovery system for solar power station

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 , figure 2 In the described embodiment, the PID restoration system of the solar power station includes several solar cell module arrays 1, several combiner boxes 2, a DC power distribution cabinet 3, a PID restoration device 7, an inverter 4, an AC power distribution cabinet 5 and a transformer 6 , several solar cell module arrays 1 are connected in parallel to a combiner box 2, and several combiner boxes 2 are connected in parallel to a DC power distribution cabinet 3, a DC power distribution cabinet 3, an inverter 4, and an AC power distribution cabinet 5 and transformer 6 are connected sequentially, and PID recovery device 7 includes high-voltage power supply 73, on-off switch 72, controller 71, battery interface 74, clock, radiometer 8, alarm device 76 and touch screen 75, battery interface 74 and high-voltage powe...

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Abstract

The invention discloses a PID recovery system for a solar power station. The PID recovery system comprises a solar cell module array, a header box, a direct-current distribution cabinet, a PID recovery device, an inverter, an alternating-current distribution cabinet and a transformer. The solar cell module array is connected into the header box in parallel. The header box is connected to the direct-current distribution cabinet in parallel. The direct-current distribution cabinet, the inverter, the alternating-current distribution cabinet are sequentially connected. The PID recovery device comprises a high-voltage power source, an on-off switch and a controller. The high-voltage power source is connected with the controller through the on-off switch. The on-off switch is provided with the power source low-voltage output end and the power source high-voltage output end. The power source low-voltage output end is connected with a frame or a support of the solar cell module array, and the power source high-voltage output end is connected with the negative pole end in the direct-current distribution cabinet or the header box. The PID recovery system has the advantages of achieving automatic control and the purpose of power recovery, normal power generation of the solar power station is not influenced, the application range is extended, and the use safety and the reliability are improved.

Description

technical field [0001] The invention relates to the technical field related to solar energy, in particular to a PID recovery system for a solar power station. Background technique [0002] There are more and more photovoltaic applications, the scale of power stations is getting larger and larger, and the number of modules in series is increasing. In this case, there is an increasing chance that solar modules will withstand high ground potential energy. Due to the presence of high voltage, there is a leakage current between the internal conductors and the earth (through the frame). The PID phenomenon of solar power plants is the attenuation of power generation of solar cell modules during outdoor applications. [0003] In 2005, NREL conducted the first research on the reliability of modules by the leakage current between the module and the earth, and believed that the accumulation of battery surface charges caused by the potential difference between the inside and outside o...

Claims

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Application Information

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IPC IPC(8): H02S40/30
CPCY02E10/50
Inventor 刘志刚杜年虎白小康
Owner SHANGHAI ZHIWEI ENVIRONMENTAL TECH
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