CN208316311U - A kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet - Google Patents
A kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet Download PDFInfo
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- CN208316311U CN208316311U CN201820883142.0U CN201820883142U CN208316311U CN 208316311 U CN208316311 U CN 208316311U CN 201820883142 U CN201820883142 U CN 201820883142U CN 208316311 U CN208316311 U CN 208316311U
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- breaker
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- energy meter
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- 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
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Abstract
The utility model discloses a kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinets, and the front of cabinet body is divided into Lower Tween Deck room from top to bottom；Respectively the first breaker chamber, the second breaker chamber, measuring room；The inside of first breaker chamber is installed with the first grid-connected breaker, and the first inlet wire of the first grid-connected breaker and the first outlet each extend in cable vault；The inside of second breaker chamber is installed with the second grid-connected breaker, and the second inlet wire of the second grid-connected breaker and the second outlet each extend in cable vault；The first grid-connected electric energy meter and the second grid-connected electric energy meter is set side by side in measuring room inner transverse, and the measurement line of the first grid-connected electric energy meter is connected with the first measurement mutual inductor being arranged in the first outlet；The measurement line of second grid-connected electric energy meter is connected with the second measurement mutual inductor being arranged in the second outlet.The occupied area of the utility model is obviously reduced compared with than previous equipment, while also effectively reducing access system engineering equipment occupied area and unit price cost.
Description
Technical field
It is low more specifically to a kind of compact the present invention relates to a kind of low pressure photovoltaic power station apparatus field
Press distributed photovoltaic power generation station grid-connection cabinet.
Background technique
By Guo Wang company relevant regulations, when low pressure distributed photovoltaic power generation project accesses power grid, single grid entry point and network capacity
Amount must not exceed 400kW, therefore, when installed capacity is more than the distributed photovoltaic power generation project access power grid of 400kW, need to be arranged 2
A and above grid entry point, and a grid entry point can only be arranged in common grid-connection cabinet, photovoltaic power generation project accesses 2 and the above grid entry point
When, just a face grid-connection cabinet must be set to each grid entry point, connect that net equipment occupation space is larger, and engineering construction amount is higher, lack
The flexibility of installation and convenience are unfavorable for distributed photovoltaic power generation project access system Project Cost Control and easy for construction.
Summary of the invention
The present invention proposes a kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet for the problems in background technique,
Built-in two breakers and corresponding metering device, can be arranged two grid entry points simultaneously, solve traditional equipment occupied space compared with
Greatly, the higher technical problem of engineering construction amount.
In order to achieve the above object, the present invention provides a kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet, packets
Cabinet body is included, the rear portion of the cabinet body is the cable vault for installing cable, and the front of the cabinet body is divided into Lower Tween Deck from top to bottom
Room；Upper and lower two layers of cabinet room is respectively the first breaker chamber and the second breaker chamber, is clipped in first breaker chamber and described
Cabinet room between two breaker chambers is measuring room.
The inside of first breaker chamber is installed with the first grid-connected breaker, the first grid-connected breaker first into
Line and the first outlet each extend in the cable vault.
The inside of second breaker chamber is installed with the second grid-connected breaker, the second grid-connected breaker second into
Line and the second outlet each extend in the cable vault.
The first grid-connected electric energy meter and the second grid-connected electric energy meter is set side by side in the measuring room inner transverse, and described first is grid-connected
The measurement line of electric energy meter is connected with the first measurement mutual inductor being arranged in first outlet；The second grid-connected electric energy meter
Measurement line is connected with the second measurement mutual inductor being arranged in second outlet.
Above-mentioned compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet under preferred embodiment, is equipped at the top of the cabinet body
Hanging ring.It is convenient that cabinet body is transported.
Above-mentioned compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet, under preferred embodiment, the front setting of the measuring room
Front door, the front door are equipped with door lock.
Above-mentioned compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet, under preferred embodiment, setting is used to see on the front door
Examine the table window of the described first grid-connected electric energy meter and the second grid-connected electric energy meter.
Above-mentioned compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet, under preferred embodiment, first breaker chamber and institute
The front for stating the second breaker chamber is equipped with single layer door, the outer door lock of setting on the single layer door.
Above-mentioned compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet, the bottom of the cabinet body opens up multiple cable connections
Hole.
Two breakers built in the present invention and corresponding metering device, can be arranged two grid entry points simultaneously, and equipment takes up an area face
Product be obviously reduced compared with than previous equipment, while also effectively reduce access system engineering equipment occupied area and unit price at
This, while improving flexibility and the convenience of installation.
The present invention has the advantages that 1, so that small distributed photovoltaic plant is connect net EM equipment module, it is integrated, standardization,
It avoids photovoltaic plant owner because of drawing of failing to understand, does not know about equipment without constructing as required, can not finally be checked and accepted by connecing net
Problem；2, site operation is significantly facilitated, corresponding cable access device case need to only can be completed as required and entirely connect net work by scene
Journey.3, photovoltaic plant can be substituted and connect net drawing, simplify working procedure, save the working time.
Detailed description of the invention
Fig. 1 is external structure schematic diagram of the invention；
Fig. 2 is schematic diagram of internal structure of the invention；
Fig. 3 is internal structure side schematic view of the invention；
Fig. 4 is the B-B cross-sectional view of Fig. 1；
Fig. 5 is the A-A cross-sectional view of Fig. 2；
Fig. 6 is electric appliance key wiring diagram of the invention.
In figure, 1, hanging ring, the 2, first breaker chamber, 3, measuring room, 4, table window, the 5, second breaker chamber, 6, metering it is dedicated
Lock, 7, sealing lock nose, the 8, first grid-connected electric energy meter, the 9, first grid-connected breaker, the 10, second grid-connected electric energy meter, 11, measuring room shakes
Door, 12, metering junction box, the 13, second grid-connected breaker, the 14, first inlet wire, the 16, first outlet, 17a, the first measurement mutual inductance
Device, 17b, the second measurement mutual inductor, the 18, second outlet, the 19, second inlet wire, 20, cable vault, 25, cable connection hole.
Specific embodiment
As shown in FIG. 1 to 3, a kind of compact-type low-voltage distributed photovoltaic power generation of the invention station grid-connection cabinet, including cabinet body, institute
The rear portion of cabinet body is stated as the cable vault 20 for installing cable, the front of the cabinet body is divided into Lower Tween Deck room from top to bottom；Above and below
Two layers of cabinet room is respectively the first breaker chamber 2 and the second breaker chamber 5, is clipped in first breaker chamber 2 and described second and breaks
Cabinet room between road device room 5 is measuring room 3.Hanging ring 1 is installed at the top of the cabinet body.
A kind of cabinet body of compact-type low-voltage distributed photovoltaic power generation of the invention station grid-connection cabinet uses Pedestal mounted installation side
Formula, cabinet body are made by cold-rolled steel sheet, and cabinet body cold plate thickness is not less than 2 millimeters, and cabinet door thickness is not less than 2 millimeters.Equipment cabinet top is set
Installation hanging ring 1 is set, can be convenient ground inlet wire lifting.
As shown in figure 3, the inside of first breaker chamber 2 is installed with the first grid-connected breaker 9, described first is grid-connected disconnected
First inlet wire 14 of road device 9 and the first outlet 16 each extend in the cable vault 20.
The inside of second breaker chamber 5 is installed with the second grid-connected breaker 13, the second grid-connected breaker 13
Second inlet wire 19 and the second outlet 18 each extend in the cable vault 20.
As shown in Figure 2 and Figure 3, the first grid-connected electric energy meter 8 and the second grid-connected electricity is set side by side in 3 inner transverse of measuring room
It can table 10, the measurement line of the first grid-connected electric energy meter 8 and the first measurement mutual inductor 17a being arranged in first outlet 16
It is connected；The measurement line of the second grid-connected electric energy meter 10 and the second measurement mutual inductor 17b being arranged in second outlet 18
It is connected.
Equipment cabinet mainly divides three parts: being above the first breaker chamber 2, is mainly used to install the first grid-connected breaker 9；In
Between be measuring room 3, be mainly used to that electric energy meter and terminal box are installed；Bottom of cabinet bulk is the second breaker chamber 5, second breaker
Room 5 is mainly used for installing the second grid-connected breaker 13.
The first grid-connected breaker 9 and the second grid-connected breaker 13 require to have decompression tripping and examine have pressing lock
Function.
As shown in Figure 1, measuring room 3 is designed by anti-electricity-theft requirement, front door is set and door lock is installed, the front door is in electric energy meter
Setting is used to observe the table window 4 of the described first grid-connected electric energy meter 8 and the second grid-connected electric energy meter 10 at hanging position.Door lock is
Sealing lock nose 7 and metering dedicated lock 6.
The front of first breaker chamber 2 and second breaker chamber 5 is equipped with single layer door, sets on the single layer door
Set outer door lock.
The present invention use two pieces of electric energy meters, the respectively first grid-connected electric energy meter 8 and the second grid-connected electric energy meter 10, described first
Grid-connected electric energy meter 8 and the second grid-connected electric energy meter 10 are the three-phase multifunctional electronic watch for having GPRS function.
Two grid-connected breakers are arranged in the present invention, respectively there is the first grid-connected breaker 9 and the second grid-connected breaker 13, energy
Enough while being used for two grid entry points.Breaker selects plastic housing, frame-type circuit breaker, it is desirable that has power end and load side is reversely connected
Ability, and have and obviously cut-off instruction.Grid-connected breaker requires to have decompression tripping and examine have pressure closing function.
As shown in figure 5, breaker disengaging line end of the invention is drawn by copper bar, and the bottom of the cabinet body open up it is more
A cable connection hole 25.Facilitate grid-connected cable connection.
Working principle of the present invention is as follows:
The grid-connected breaker of two-way has separate unit room, and end of incoming cables is respectively in the top and bottom of two breakers, two-way metering
Table respectively grid-connected measures two by mutual inductor sample.When in-site installation, each circuit breaker position in equipment cabinet bottom is equal
Default cable access, photovoltaic plant inverter ac output cable access the grid-connected breaker of two-way, and the grid-connected breaker of two-way is by simultaneously
Net cable is connected on the original low-voltage distribution cabinet breaker of power grid, and two-way grid entry point photovoltaic plant can be completed and connect net engineering construction.
As shown in Figure 2, Figure 4 shows, individually grid-connected breaker chamber, measuring room is arranged in the present invention, and metering indoor location metering connects
Table window 4 is arranged in wire box 12, the first grid-connected electric energy meter 8, the second grid-connected electric energy meter 10 at electric energy meter hanging position.For maintenance side
Just measuring room double-acting door 11 is equipped in measuring room.
Electrical principle wiring diagram as shown in Figure 6 further describes the present invention, and photovoltaic plant, which generates electricity, to be turned through inverter
After being changed to 380V alternating current, grid-connection cabinet, each power supply line are entered by Liang Ge power supply line (the first inlet wire and the second inlet wire)
Output power using 400kW as the upper limit, the first inlet wire access the first grid-connected breaker (1QF), the first grid-connected breaker lower terminal
Two Sets of Measurement CT (THa, THb, THc and TA, TB, TC) is installed in side, wherein a Sets of Measurement CT (TA, TB, TC) is the first grid-connected electricity
Energy table Wh1 provide metering signal, and another group of measurement CT (THa, THb, THc) provides metering signal for instrument on cabinet.Photovoltaic first
Inlet wire through grid-connected breaker outgoing line end be connected in the original low-voltage cabinet of customer substation switch realize it is grid-connected；Second inlet wire access the
Two Sets of Measurement CT are installed in two grid-connected breaker 2QF, the second grid-connected breaker lower terminal side
(THa, THb, THc and TA, TB, TC), wherein a Sets of Measurement CT (TA, TB, TC) is that the second grid-connected electric energy meter Wh2 is mentioned
For metering signal, another group of measurement CT (THa, THb, THc) provides metering signal for instrument on cabinet, and the second inlet wire of photovoltaic is through grid-connected
It is grid-connected that breaker outgoing line end is connected to another switch realization in the original low-voltage cabinet of customer substation.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet, including cabinet body, which is characterized in that the rear portion of the cabinet body
For the cable vault (20) for installing cable, the front of the cabinet body is divided into Lower Tween Deck room from top to bottom；Upper and lower two layers of cabinet room point
Not Wei the first breaker chamber (2) and the second breaker chamber (5), be clipped in first breaker chamber (2) and second breaker
Cabinet room between room (5) is measuring room (3)；
The inside of first breaker chamber (2) is installed with the first grid-connected breaker (9), the first grid-connected breaker (9)
First inlet wire (14) and the first outlet (16) each extend in the cable vault (20)；
The inside of second breaker chamber (5) is installed with the second grid-connected breaker (13), the second grid-connected breaker (13)
The second inlet wire (19) and the second outlet (18) each extend in the cable vault (20)；
Measuring room (3) inner transverse is set side by side the first grid-connected electric energy meter (8) and the second grid-connected electric energy meter (10), and described
The measurement line of one grid-connected electric energy meter (8) is connected with the first measurement mutual inductor (17a) being arranged on first outlet (16)；Institute
State the measurement line of the second grid-connected electric energy meter (10) and second measurement mutual inductor (17b) phase being arranged on second outlet (18)
Even.
2. compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet according to claim 1, which is characterized in that the cabinet body
Top is equipped with hanging ring (1).
3. compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet according to claim 1, which is characterized in that the measuring room
(3) front setting front door, the front door is equipped with door lock.
4. compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet according to claim 3, which is characterized in that on the front door
The table window (4) for being used to observe the described first grid-connected electric energy meter (8) and the second grid-connected electric energy meter (10) is set.
5. compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet according to claim 1, which is characterized in that described first is disconnected
Road device room (2) and the front of second breaker chamber (5) are equipped with single layer door, the outer door lock of setting on the single layer door.
6. compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet according to claim 1, which is characterized in that the cabinet body
Bottom opens up multiple cable connection holes (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820883142.0U CN208316311U (en) | 2018-06-08 | 2018-06-08 | A kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820883142.0U CN208316311U (en) | 2018-06-08 | 2018-06-08 | A kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208316311U true CN208316311U (en) | 2019-01-01 |
Family
ID=64709105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820883142.0U Active CN208316311U (en) | 2018-06-08 | 2018-06-08 | A kind of compact-type low-voltage distributed photovoltaic power generation station grid-connection cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208316311U (en) |
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2018
- 2018-06-08 CN CN201820883142.0U patent/CN208316311U/en active Active
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