CN205941763U

CN205941763U - A arc fault positioner for photovoltaic

Info

Publication number: CN205941763U
Application number: CN201620886476.4U
Authority: CN
Inventors: 王忠涛; 何飞
Original assignee: Huambo Chengdu Smart Power Polytron Technologies Inc
Current assignee: Huambo Chengdu Smart Power Polytron Technologies Inc
Priority date: 2016-08-16
Filing date: 2016-08-16
Publication date: 2017-02-08
Anticipated expiration: 2026-08-16

Abstract

The utility model discloses an arc fault positioner for photovoltaic relates to the electric arc protection field, an input module, the 2nd input module, output module, main transformer, auxiliary transformer, air switch and case change module, an input module's output be connected with main transformer's input, the 2nd input module's output be connected with main transformer's input, air switch be connected with auxiliary transformer's input, auxiliary transformer's output be connected with the input of main transformer and case change module respectively, an input module's output be connected with the input of case change module. Can carry out in time the location to arc fault and in time upload the central control room with trouble information, alleviate and maintained and the degree of difficulty improved work efficiency, the device simple structure, convenient operation, lower cost of while.

Description

A kind of arc fault positioner for photovoltaic

Technical field

This utility model is related to electric arc protection field, more particularly, to a kind of arc fault positioner for photovoltaic.

Background technology

It is known that inside switch cabinet arc short-circuit fault is a kind of very serious problem in distribution system, its destruction Power is quite big.There is the energy that the arc burning in inside switch cabinet discharges so that the temperature of internal arctube reaches thousand of taking the photograph Family name's degree, thus seriously burning the switchgear of costliness, and, the short-circuit current rush producing in arc burning can damage main transformer Depressor, causes to have a power failure for a long time, and more serious also can cause casualties.And in the prior art, increasing user adopts With electric arc protection as in, low-tension switch cabinet internal fault protection, have become as the standard configuration of switch cubicle.But in development During the monitoring that becomes of photovoltaic field raising middle flask be also particularly important, the non intelligentization that current 35KV case becomes has become as impact light The maximum obstruction of volt field automated process, the various information in case change cannot be uploaded to Central Control Room in real time, make case be turned into photovoltaic Monitoring blind area, thus safety in production and regular maintenance to photovoltaic field bring great inconvenience, especially to equipment and The hidden danger of personal safety.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of positioning of the arc fault for photovoltaic Device, can solve the problem that switch cubicle arc short-circuit cause internal components loss and can not in time to fault location problem.

The purpose of this utility model is achieved through the following technical solutions：A kind of arc fault positioning for photovoltaic Device：First input module, the second input module, output module, main transformer, auxiliary transformer, air switch and case become mould Block；The described outfan of the first input module is connected with the input of main transformer, the output of described the second input module End is connected with the input of main transformer, and described air switch is connected with the input of auxiliary transformer, and described auxiliary becomes The input that the outfan of depressor becomes module with main transformer and case respectively is connected, the described outfan of the first input module and The input that case becomes module connects.

The first described input module include a 270V inlet wire line to and the first low-voltage circuit breaker, a described 270V The outfan of inlet wire line pair is connected with the input of the first low-voltage circuit breaker, the described outfan of the first low-voltage circuit breaker and master The input of transformator connects.

The second described input module include the 2nd 270V inlet wire line to and the second low-voltage circuit breaker, described the 2nd 270V The outfan of inlet wire line pair is connected with the input of the second low-voltage circuit breaker, the described outfan of the second low-voltage circuit breaker and master The input of transformator connects.

Described output module includes primary cut-out, high voltage load switch and 35KV outlet line pair；Described height breaks Road device one end is connected with the outfan of main transformer, and the other end is connected with the input of high voltage load switch；Described high pressure is born Lotus switch is with 35KV outlet line to being connected.

Described main transformer includes the 270/35KV transformator of three-phase Y- delta connection.

Described auxiliary transformer includes the 270/400V transformator of three-phase Y- delta connection.

The first described input module also includes current transformer, and described current transformer is connected on a 270V inlet wire To upper, one end connecting box change module of current transformer, the other end is grounded line.

The second described input module also includes current transformer, and described current transformer is connected on the 2nd 270V inlet wire To upper, one end connecting box change module of current transformer, the other end is grounded line.

The first described input module is provided with arc photosensor SEN2, and the second described input module is provided with arc light and passes Sensor SEN3, described output module is provided with arc photosensor SEN1.

The beneficial effects of the utility model are：A kind of arc fault positioner for photovoltaic, can be to arc fault Positioned in time and uploaded Central Control Room in time with fault message, alleviated maintenance difficulties, improve work efficiency, this apparatus structure Simply, easy to operate, simultaneously relatively low cost.

Brief description

Fig. 1 is fault location circuit diagram.

Specific embodiment

Below in conjunction with the accompanying drawings the technical solution of the utility model is described in further detail, but protection domain of the present utility model It is not limited to described below.

As shown in figure 1, a kind of arc fault positioner for photovoltaic：First input module, the second input module, defeated Go out module, main transformer, auxiliary transformer, air switch and case and become module；The described outfan of the first input module and master The input of transformator connects, and the described outfan of the second input module is connected with the input of main transformer, described sky Air cock is connected with the input of auxiliary transformer, and the outfan of described auxiliary transformer becomes mould with main transformer and case respectively The input of block connects, and the input that the described outfan of the first input module becomes module with case is connected.

This utility model becomes module in the case when low-pressure side occurs arc fault and sends arc light caution signalss, or sends tripping operation Signal disconnects this circuit breaker, passes through hard contact simultaneously and communication uploads backstage, and complete arc fault positioning.

When there is arc fault when high-pressure side, case change module passes through hard contact and communication uploads backstage, and completes arc fault Positioning.

The above is only preferred implementation of the present utility model it should be understood that this utility model is not limited to herein Disclosed form, is not to be taken as the exclusion to other embodiment, and can be used for various other combinations, modification and environment, and Can be modified by the technology or knowledge of above-mentioned teaching or association area in contemplated scope described herein.And this area Change that personnel are carried out and change, then all should be in rights appended by this utility model without departing from spirit and scope of the present utility model In the protection domain requiring.

Claims

1. a kind of arc fault positioner for photovoltaic it is characterised in that：First input module, the second input module, defeated Go out module, main transformer, auxiliary transformer, air switch and case and become module；The described outfan of the first input module and master The input of transformator connects, and the described outfan of the second input module is connected with the input of main transformer, described sky Air cock is connected with the input of auxiliary transformer, and the outfan of described auxiliary transformer becomes mould with main transformer and case respectively The input of block connects, and the input that the described outfan of the first input module becomes module with case is connected.

2. a kind of arc fault positioner for photovoltaic according to claim 1 it is characterised in that：Described first Input module include a 270V inlet wire line to and the first low-voltage circuit breaker, the described outfan of a 270V inlet wire line pair with The input of the first low-voltage circuit breaker connects, and the described outfan of the first low-voltage circuit breaker is connected with the input of main transformer Connect.

3. a kind of arc fault positioner for photovoltaic according to claim 1 it is characterised in that：Described second Input module include the 2nd 270V inlet wire line to and the second low-voltage circuit breaker, the described outfan of the 2nd 270V inlet wire line pair with The input of the second low-voltage circuit breaker connects, and the described outfan of the second low-voltage circuit breaker is connected with the input of main transformer Connect.

4. a kind of arc fault positioner for photovoltaic according to claim 1 it is characterised in that：Described output Module includes primary cut-out, high voltage load switch and 35KV outlet line pair；Described primary cut-out one end and main transformer Outfan connect, the other end is connected with the input of high voltage load switch；Described high voltage load switch and 35KV outlet line To connection.

5. a kind of arc fault positioner for photovoltaic according to claim 1 it is characterised in that：Described main transformer Depressor includes the 270/35KV transformator of three-phase Y- delta connection.

6. a kind of arc fault positioner for photovoltaic according to claim 1 it is characterised in that：Described auxiliary Transformator includes the 270/400V transformator of three-phase Y- delta connection.

7. a kind of arc fault positioner for photovoltaic according to claim 1 it is characterised in that：Described first Input module also includes current transformer, and described current transformer is connected on a 270V inlet wire line to upper, current transformer One end connecting box become module, the other end is grounded.

8. a kind of arc fault positioner for photovoltaic according to claim 1 it is characterised in that：Described second Input module also includes current transformer, and described current transformer is connected on the 2nd 270V inlet wire line to upper, current transformer One end connecting box become module, the other end is grounded.

9. a kind of arc fault positioner for photovoltaic according to claim 1 it is characterised in that：Described first Input module is provided with arc photosensor SEN2, and the second described input module is provided with arc photosensor SEN3, and described is defeated Go out module and arc photosensor SEN1 is installed.