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Arc-control device and arc-control method applied in photovoltaic combiner box

A technology of photovoltaic combiner box and arc extinguishing device, which is applied in emergency protection circuit devices, electrical components and other directions, can solve the problems of failing to meet the safety requirements of photovoltaic power generation and threatening the safety of photovoltaic power station assets.

Active Publication Date: 2013-09-04
ZHUHAI SINGYES GREEN BUILDING TECH +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the frequent fires of photovoltaic combiner boxes, which greatly threaten the asset safety of photovoltaic power plants, the above-mentioned functions can no longer meet the safety requirements of photovoltaic power generation, and photovoltaic combiner boxes need more intelligent "fire extinguishing" capabilities
At present, there is no device that can intelligently protect the combiner box and eliminate electric sparks that is applied to photovoltaic power generation.

Method used

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  • Arc-control device and arc-control method applied in photovoltaic combiner box
  • Arc-control device and arc-control method applied in photovoltaic combiner box
  • Arc-control device and arc-control method applied in photovoltaic combiner box

Examples

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Embodiment Construction

[0043] According to the attached figure 1 The photovoltaic cathode busbar 1, the photovoltaic dedicated fuse 3, the photovoltaic dedicated diode 4, and the photovoltaic anode busbar 5 are electrically connected in sequence to form a bus branch circuit.

[0044] Divide the resistor divider module 6, The timer module 9, the RS485 communication module 10, the two-input OR gate 11, the driving circuit module 12, and the IGBT module 13 are electrically connected in sequence to form a detection and control circuit.

[0045] The resistor divider module is composed of high-power resistors and anti-reverse diodes. Using the resistor divider principle, the anode and cathode of the photovoltaic special diode are respectively collected for voltage, and the obtained voltage signal is sent to the voltage comparator module.

[0046]The voltage comparator module is composed of voltage comparators, diodes, transistors and related resistors and capacitors, compares the voltages sampled by the...

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Abstract

The invention relates to an arc-control device applied in a photovoltaic combiner box. The arc-control device particularly comprises a confluence branch which is formed by electrically connecting a photovoltaic negative electrode busbar, a special photovoltaic fuse, a special photovoltaic diode and a photovoltaic positive electrode busbar in sequence, and a detection and control circuit which is formed by a resistor divider module, a voltage comparison module, a timer module, a signal processing module, an RS 485 communication module, a two-input OR gate, a driving circuit module and an IGBT (Insulated Gate Bipolar Transistor) module; and the invention also relates to a combiner box arc-control method applying the arc-control device.

Description

technical field [0001] The invention relates to a safety protection applied in the field of photovoltaic power generation, in particular to a photovoltaic power generation combiner box. Background technique [0002] In the case of depletion of traditional energy sources, photovoltaic power generation technology has been widely used and developed by leaps and bounds. The photovoltaic combiner box realizes the functions of confluence, protection, voltage and current acquisition, data communication and other functions on the site of the photovoltaic power station, and is an important front-end equipment in the photovoltaic power station. Photovoltaic combiner boxes have made great progress from simple functions such as confluence and lightning protection to data acquisition, communication and other functions. [0003] The photovoltaic combiner box in a large photovoltaic power station mainly undertakes the function of photovoltaic square array, and works in a high-voltage DC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/00
Inventor 肖慧明肖新元刘胥和何强
Owner ZHUHAI SINGYES GREEN BUILDING TECH
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