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A photovoltaic string terminal

A technology of terminals and photovoltaic groups, which is applied in the monitoring of photovoltaic power generation, photovoltaic modules, photovoltaic systems, etc., can solve problems such as hidden safety hazards and heavy maintenance workload.

Active Publication Date: 2020-03-24
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a photovoltaic string connection terminal to solve the problems of heavy maintenance workload and potential safety hazards in the prior art

Method used

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  • A photovoltaic string terminal
  • A photovoltaic string terminal
  • A photovoltaic string terminal

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0031] The invention provides a photovoltaic group string connection terminal to solve the problems of heavy maintenance workload and potential safety hazards in the prior art.

[0032] see figure 2 , the photovoltaic string connection terminal is arranged between a photovoltaic string and the DC bus, the photovoltaic string includes at least one photovoltaic module; the photovoltaic string connection terminal includes: terminal joint 101, fuse 102, current sampling circuit 301 , a voltag...

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Abstract

The invention provides a photovoltaic string connection terminal, which connects the positive pole or negative pole of the photovoltaic string through a terminal joint; prevents the output current of the photovoltaic string from being too large through a fuse; samples the output current and the output current of the photovoltaic string through a PCB. Voltage, communicate with the inverter, and when the output current and / or output voltage of the photovoltaic string is abnormal or the system fails, control the connection between the photovoltaic string and the DC bus to disconnect and output abnormal data It can be displayed; in the prior art, when the puncture terminal falls off or is short-circuited, the problem of large maintenance workload and potential safety hazards can only be achieved through one-by-one troubleshooting to achieve fault location in the prior art.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic string connection terminal. Background technique [0002] Traditional large-scale ground photovoltaic power plants generally include photovoltaic strings (multiple photovoltaic modules connected in series), combiner boxes, centralized inverters, transformers, etc. Among them, the function of the combiner box is to gather the output positive and negative cables of the photovoltaic strings together and then send them to the inverter, and generally the combiner box has a fuse inside to protect the current overcurrent of the photovoltaic strings, and there are also some combiner boxes It has functions such as current detection. [0003] With the continuous development of photovoltaic industry technology and the intensification of competition in the photovoltaic industry, more and more new technologies and new solutions have begun to be applied to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S40/34H02S40/36H01R13/66
CPCH02S40/34H02S40/36H01R13/665H01R13/6683H02S40/30H02H3/04H02H3/087H02H3/202H02H3/207H02S50/00Y02E10/56H02S40/32H02H1/0092H02H1/0007H02H7/20
Inventor 陶磊潘年安韩志强王艾
Owner SUNGROW POWER SUPPLY CO LTD