CN107732971A - A kind of band bidirectional current protection distributed grid-connected access case - Google Patents
A kind of band bidirectional current protection distributed grid-connected access case Download PDFInfo
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- CN107732971A CN107732971A CN201711119531.2A CN201711119531A CN107732971A CN 107732971 A CN107732971 A CN 107732971A CN 201711119531 A CN201711119531 A CN 201711119531A CN 107732971 A CN107732971 A CN 107732971A
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- photovoltaic
- current
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 230000010354 integration Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000006837 decompression Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- 238000007689 inspection Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000001012 protector Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H02J3/383—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/03—Boards, panels, desks; Parts thereof or accessories therefor for energy meters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
- H02B1/042—Mounting on perforated supports by means of screws or locking members
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/16—Earthing arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/207—Cross-bar layouts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention announces a kind of band bidirectional current protection distributed grid-connected access case, is installed using suspension type, including four casing, wire inlet unit, metering units and outgoing line unit parts;3 wire inlet loops, 1 transmission line circuit；Casing is bent using stainless steel plate and is welded, and dividing plate is provided with the cuboid rack of bottom, and casing is divided into three wire inlet unit, metering units and outgoing line unit parts by internal large and small dividing plate;The grid-connected definite purpose circuit breaker in control section is measured using bidirectional current, and upper and lower ends can all be used as receiving end.Main bus-bar and horizontal bus are located at bottom half, for preferably protective grounding, set a copper busbar as earth bus, door in bottom of cabinet bulk and are connected with casing with yellow and green, whole cabinet is formed complete ground protection circuit.
Description
Technical field
The present invention relates to grid integration case, more particularly to a kind of band bidirectional current protection distributed grid-connected access case.
Background technology
Grid integration case mainly uses the standard of low voltage complete set, and protection class must match with inverter capacity.
Applied to solar power system and national grid intersection, photovoltaic DC-to-AC converter leading-out terminal is typically connected on, to distributed photovoltaic electricity
Stand to grid-connected protective effect.It is simultaneously internal equipped with switch and metering ammeter, it is mainly used in measuring grid-connected electric energy.
It is grid-connected when electric fault occur or influenceed and during interruption of power supply by natural cause in terms of electric power netting safe running
Photovoltaic generating system still can peripherad load supplying, such as photovoltaic plant islet operation, power transmission is fallen to system, to power network
Operation causes the harm of many.It is the safety hazard to power network maintenance personal first, next to that in particular cases being disconnected at some
Electrical equipment can be damaged during power supply, even if so as phase is asynchronous and produces powerful electric current after power system restoration power supply
Impact.Therefore, it is necessary to grid integration case is innovated.
The content of the invention
In view of it is insufficient existing for background technology, present invention solves the technical problem that being that providing a kind of band bidirectional current protects
Distributed grid-connected accesses case, it is possible to provide short-circuit protection, lightning protection and ground protection, is realized especially by following technical scheme
's：
The present invention band bidirectional current protection distributed grid-connected access case, installed using suspension type, including casing, wire inlet unit,
Four parts of metering units and outgoing line unit.3 wire inlet loops, 1 transmission line circuit；Wire leading method is lower inlet wire, upper outlet.Before
Back pullout (BPO), front are switchgear house gate, and the back side is measuring room gate and basement gate.The casing is bent using stainless steel plate
It is welded, dividing plate, including internal large baffle and internal small baffle is provided with the cuboid rack of bottom；The dividing plate is by the case
Body is divided into three wire inlet unit, metering units and outgoing line unit parts.The left and right sides of casing has entrance hole and wire hole respectively, left
Upper end is provided with ventilating opening, and top cover is arranged at top.The wire inlet unit is casing front, mainly by horizontal busbar, vertical setting of types and horizontal support
Part, vertical supporter, photovoltaic definite purpose circuit breaker, inlet wire copper bar（Photovoltaic side）It is combined into.Lower end inlet wire copper bar（Photovoltaic side）On and
End breaker outgoing line copper bar is fixedly connected with the enter line side and outgoing line side of photovoltaic definite purpose circuit breaker by nut.It is grid-connected special disconnected
Road device, is fixed in horizontal support member using screw, and breaker outgoing line copper bar is connected with horizontal busbar, is measured using bidirectional current,
Upper and lower ends can all be used as receiving end.Box back surface, left side are outgoing line unit, and right side is metering units.Described metering units
By metering device with metering device gripper shoe groups into metering device is generally power information collector and electric energy meter, is led using BVR
Line is connected with horizontal busbar carries out the current sampling of voltage sampling and current transformer.Metering device is fixed on metering device supporting plate
On.Described outgoing line unit includes fuse type blade type disconnecting switch, current transformer, outlet row（Transformer side）, zero line row
And enter knife outlet row etc..Electric current enters knife outlet row from 4 by fuse type blade type disconnecting switch, then through current transformer, from 3
Individual outlet row（Step down side）And 1 zero line row's output.Main bus-bar and horizontal bus are located at bottom half, in order to preferably
Protective grounding, a TMY-5mm*40mm copper busbar is set as earth bus in bottom of cabinet bulk, has earth point and ground connection to indicate, door
With casing BVR-2.5mm2Yellow and green connects, and whole cabinet is formed complete ground protection circuit.
Compared with the prior art, the present invention has following advantage：
1）Intelligent electricity leakage protector can be increased by the present invention, realize protection to circuit, monitoring function, can detect in circuit
The electric faults such as overvoltage/under-voltage, excessively stream/short circuit, and can be cut off the electricity supply in time when breaking down.This is for installing out of doors
Grid entry point, while ensure that Electrical Safety is reliable, decrease live manual maintenance work.
2）Automatic reclosing function can be realized by the present invention, built in grid integration case reclosing switch, can prevent by
The caused temporary line fault tripping operation in the thunderbolt situations such as, can automatic reclosing again when the insulating properties of circuit are restored.
This not only reduces the workload that manual closing operation is brought, and also improves the safety and reliability of power supply, reduces loss of outage, and
It can correct due to mistrip caused by breaker or protective relaying device, while also support the isolated island protection of family electricity generation system.
A kind of described grid-connected definite purpose circuit breaker with bidirectional current protection grid integration case, possesses easy to operate, bright
It is aobvious to cut-off instruction, cut-off fault current capability, decompression tripping operation, overvoltage tripping operation and examine and have pressure closing function, possess residual current guarantor
The function of shield；Control section photovoltaic definite purpose circuit breaker（6）Measured using bidirectional current, upper and lower ends can all be used as receiving end；Institute
Electricity can be assigned directly to in electric loading, and unnecessary or insufficient electric power is adjusted by coupling bulk power grid, with bulk power grid it
Between electric power two-way exchange, parallel network power generation can be supported to greatest extent, and ensure grid-connected security.The present invention's
Grid integration case increases intelligent electricity leakage protector, and the performance in terms of practicality is more prominent, there is provided a kind of band bidirectional current is protected
Distributed grid-connected access case is protected, the security of system can be improved.Voltage x current can be carried out simultaneously to monitor, upload and divide in real time
Analysis, facilitates the maintenance in later stage, effectively protects the safety of maintenance personal.
Brief description of the drawings
Fig. 1 protects distributed grid-connected to access box structure and decouples view for a kind of band bidirectional current of the present invention;
Fig. 2 protects distributed grid-connected to access case front assembly structure diagram for a kind of band bidirectional current of the present invention;
Fig. 3 protects distributed grid-connected to access case back side assembly structure diagram for a kind of band bidirectional current of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of band bidirectional current protection distributed grid-connected access case of the present invention, grid integration case grid integration
Case is installed using suspension type, including four casing, wire inlet unit, metering units and outgoing line unit parts.3 wire inlet loops, 1
Transmission line circuit；Wire leading method is lower inlet wire, upper outlet.Front and rear enabling, front are switchgear house gate 7, and the back side is measuring room gate
19 and basement gate 18.The casing is bent using stainless steel plate and is welded, and dividing plate is provided with the cuboid rack of bottom, bag
Include internal large baffle 21 and internal small baffle 22；The casing is divided into wire inlet unit, metering units and outlet list by the dividing plate
First three parts.The left and right sides of casing has entrance hole and wire hole respectively, and left upper end is provided with ventilating opening 2, and top cover 23 is arranged at top.Figure
1st, shown in Fig. 2, the wire inlet unit is casing front, mainly by horizontal busbar 10, vertical setting of types and horizontal support member 4, vertical supporter
3rd, photovoltaic definite purpose circuit breaker 6, inlet wire copper bar（Photovoltaic side）8 are combined into.Lower end inlet wire copper bar（Photovoltaic side）8 and upper end breaker go out
Line copper bar 5 is fixedly connected with the enter line side and outgoing line side of photovoltaic definite purpose circuit breaker by nut.Grid-connected definite purpose circuit breaker 6, is adopted
It is fixed on screw in horizontal support member, breaker outgoing line copper bar 5 is connected with horizontal busbar, is measured using bidirectional current, and upper and lower two
End can all be used as receiving end.Shown in Fig. 1, Fig. 3, box back surface, left side is outgoing line unit, and right side is metering units.Described meter
Amount unit is made up of metering device 12 and metering device supporting plate 11, and metering device is generally power information collector and electric energy
Table, it is connected using BVR wires with horizontal busbar and carries out the current sampling of voltage sampling and current transformer.Metering device is fixed on meter
Measure in device supporting plate.Described outgoing line unit includes fuse type blade type disconnecting switch 16, current transformer 15, outlet row
（Transformer side）14th, zero line arranges 13 and enters knife outlet row 17 etc..Electric current enters knife outlet row from 4 is isolated by fuse type blade type
Switch, then through current transformer, from 3 outlet rows（Step down side）And 1 zero line row's output.Main bus-bar and horizontal bus
Positioned at bottom half, for preferably protective grounding, it is female as ground connection to set a TMY-5mm*40mm copper busbar in bottom of cabinet bulk
Line, there are earth point and ground connection to indicate, door and casing BVR-2.5mm2Yellow and green connects, and forms whole cabinet complete
Ground protection circuit.
The present invention protects distributed grid-connected to access case for a kind of band bidirectional current, by grid integration case core component and
The transformation of structural manufacturing process, increase intelligent electricity leakage protector, energy Intelligent Recognition is leaked electricity in short-term and permanent fault, and leak current fault is in short-term
Automatic reclosing puts into operation during interior disappearance, automatic blocking when meeting permanent fault, so that it is guaranteed that equipment and personal safety, are power network
Safe operation with photovoltaic apparatus is laid a good foundation.
Claims (2)
- A kind of 1. band bidirectional current protection distributed grid-connected access case, it is characterised in that described grid integration case include casing, Four wire inlet unit, metering units and outgoing line unit parts;Installed using suspension type, 3 wire inlet loops, 1 transmission line circuit； Wire leading method is lower inlet wire, upper outlet；Front and rear enabling, front is switchgear house gate（7）, the back side is measuring room gate（19）With enter Line room gate（18）;The casing is bent using stainless steel plate and is welded, and dividing plate is provided with the cuboid rack of bottom, including interior Portion's large baffle（21）With internal small baffle（22）；The casing is divided into wire inlet unit, metering units and outlet list by the dividing plate First three parts.The left and right sides of casing has entrance hole and wire hole respectively, and left upper end is provided with ventilating opening（2）, top cover is arranged at top （23）;The wire inlet unit is casing front, mainly by horizontal busbar（10）, vertical setting of types and horizontal support member（4）, vertical supporter （3）, photovoltaic definite purpose circuit breaker（6）, inlet wire copper bar（Photovoltaic side）（8）Composition;Lower end inlet wire copper bar（Photovoltaic side）（8）And upper end is broken Road device outlet copper bar（5）The enter line side and outgoing line side of photovoltaic definite purpose circuit breaker are fixedly connected with by nut;It is grid-connected special disconnected Road device（6）, it is fixed on using screw in horizontal support member, breaker outgoing line copper bar（5）It is connected with horizontal busbar, using bidirectional current Metering, upper and lower ends can all be used as receiving end;Box back surface, left side are outgoing line unit, and right side is metering units;Described metering Unit is by metering device（12）With metering device supporting plate（11）Composition, metering device are generally power information collector and electric energy Table, it is connected using BVR wires with horizontal busbar and carries out the current sampling of voltage sampling and current transformer;Metering device is fixed on meter Measure in device supporting plate;Described outgoing line unit includes fuse type blade type disconnecting switch（16）, current transformer（15）, outlet Row（Transformer side）（14）, zero line row（13）And enter knife outlet row（17）;Electric current enters knife outlet row from 4 and passes through fuse type knife Type disconnecting switch, then through current transformer, from 3 outlet rows and 1 zero line row's output;Main bus-bar and horizontal bus are located at casing Bottom, a TMY-5mm*40mm copper busbar is set as earth bus in bottom of cabinet bulk, has earth point and ground connection to indicate, Men Yuxiang Body BVR-2.5mm2Yellow and green connects, and whole cabinet is formed complete ground protection circuit.
- A kind of 2. band bidirectional current protection grid integration case according to claim 1, it is characterised in that described photovoltaic Grid-connected definite purpose circuit breaker, possess cut-off instruction, cut-off fault current capability, decompression tripping operation, overvoltage tripping operation and inspection have pressure closing power Energy, possesses the function of residual current protecting；Control section photovoltaic definite purpose circuit breaker（6）Measured using bidirectional current, upper and lower ends Receiving end can be all used as；Electricity can be assigned directly to in electric loading, and unnecessary or insufficient electric power is by coupling bulk power grid To adjust, the electric power two-way exchange between bulk power grid, parallel network power generation can be supported to greatest extent, and ensure grid-connected Security.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119531.2A CN107732971A (en) | 2017-11-14 | 2017-11-14 | A kind of band bidirectional current protection distributed grid-connected access case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119531.2A CN107732971A (en) | 2017-11-14 | 2017-11-14 | A kind of band bidirectional current protection distributed grid-connected access case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107732971A true CN107732971A (en) | 2018-02-23 |
Family
ID=61215337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711119531.2A Pending CN107732971A (en) | 2017-11-14 | 2017-11-14 | A kind of band bidirectional current protection distributed grid-connected access case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107732971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365538A (en) * | 2018-05-18 | 2018-08-03 | 株洲联诚集团控股股份有限公司 | A kind of electronic engineering machinery power distribution cabinet |
| CN109061286A (en) * | 2018-06-16 | 2018-12-21 | 王德松 | Off-grid is let out can type electric energy meter |
-
2017
- 2017-11-14 CN CN201711119531.2A patent/CN107732971A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365538A (en) * | 2018-05-18 | 2018-08-03 | 株洲联诚集团控股股份有限公司 | A kind of electronic engineering machinery power distribution cabinet |
| CN108365538B (en) * | 2018-05-18 | 2024-03-12 | 株洲联诚集团控股股份有限公司 | Power distribution cabinet for electric engineering machinery |
| CN109061286A (en) * | 2018-06-16 | 2018-12-21 | 王德松 | Off-grid is let out can type electric energy meter |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |
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| WD01 | Invention patent application deemed withdrawn after publication |