CN107968329A - Grid-connected access case and its access system - Google Patents
Grid-connected access case and its access system Download PDFInfo
- Publication number
- CN107968329A CN107968329A CN201711097926.7A CN201711097926A CN107968329A CN 107968329 A CN107968329 A CN 107968329A CN 201711097926 A CN201711097926 A CN 201711097926A CN 107968329 A CN107968329 A CN 107968329A
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- grid
- access case
- energy meter
- electric energy
- breaker
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- 230000001012 protector Effects 0.000 claims abstract description 22
- 230000005611 electricity Effects 0.000 claims abstract description 18
- 238000002955 isolation Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
-
- H02J3/383—
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of grid-connected access case and its access system, it belongs to technical field of photovoltaic power generation.It solve in the prior art tradition access case existing for measuring difficulties, power grid incoming call cannot automatic power transmission the defects of.Including ammeter box and grid connection box; isolation board is equipped between ammeter box and grid connection box; ammeter box is located at the top of grid connection box; isolation board is equipped with threading hole; electric energy meter is equipped with ammeter box; line bank is mounted with above grid connection box, the first breaker, Surge Protector, protector with automatic reconnection for leakage of electricity, inverter switching device and fuse type disconnector are equipped with grid connection box；One end of first breaker is connected with Surge Protector, and the other end is connected by line bank with electric energy meter；Protector with automatic reconnection for leakage of electricity is connected with electric energy meter and fuse type disconnector respectively by line bank；One end of inverter switching device is connected by line bank with electric energy meter, and the other end is connected with inverter.Present invention is mainly used on photovoltaic generating system.
Description
Technical field：
The invention belongs to technical field of photovoltaic power generation, specifically, more particularly to a kind of grid-connected access case and its connect
Enter system.
Background technology：
Photovoltaic generation is as one of emerging clean efficient energy, as country is to emerging energy industry and resident's self power generation
Vigorously support, parallel network power generation becomes a kind of effective way of application of promoting the use of clean energy, and can gradually substitute one
Part old power generator and technology.But during resident's parallel network power generation is promoted, due to used photovoltaic
Power generator does not have dedicated control and metering device, and interim metering solution party can only be used during network combination construction is carried out
Case, be easy to cause heavy and repeated labor；And it is initially grid-connected without the personnel of clear and definite standard and specialty installation, therefore make
How thoroughly to isolate with photovoltaic generation into many technological deficiency and security risk, such as grid power blackout maintenance, work as grid power blackout
When automatically power off, when power grid incoming call after how automatic power transmission with reach photovoltaic generation can come into operation at the first time power generation etc.
Problem.
The content of the invention：
In order to solve in the prior art, measuring difficulties, power grid incoming call power transmission cannot ask automatically existing for tradition access case
Topic, the present invention provides a kind of grid-connected access case and its access system for being different from the prior art, its accurate measurement, system
Easy to maintain.
To achieve these goals, the present invention is realized using following technical scheme：
A kind of grid-connected access case, including ammeter box and grid connection box, are equipped with isolation board between ammeter box and grid connection box, electricity
Electricity box are located at the top of grid connection box, and the isolation board is equipped with threading hole, electric energy meter, the grid connection box are equipped with the ammeter box
Top is mounted with line bank, and the first breaker, Surge Protector, automatic reclosing earth leakage protective are equipped with the grid connection box
Device, inverter switching device and fuse type disconnector；One end of first breaker is connected with Surge Protector, and the other end passes through
Line bank is connected with electric energy meter；The protector with automatic reconnection for leakage of electricity is isolated with electric energy meter and Fuse Type respectively by line bank
Switch connection；One end of the inverter switching device is connected by line bank with electric energy meter, and the other end is connected with inverter.
Further, concentrator is equipped with the ammeter box, the concentrator is connected with electric energy meter.
Further, be equipped with the second breaker in the grid connection box, second breaker respectively with the first breaker, electricity
Energy table is connected with inverter switching device.
Further, arrester electric brake and arrester are additionally provided with the grid connection box, one end of the arrester is grounded, separately
One end is connected with one end of arrester electric brake, the other end of arrester electric brake by line bank respectively with inverter switching device and electric energy
Table connects.
Further, the electric energy meter is three-phase intelligent electric-energy meter.
Further, the length of the grid-connected access case is respectively 120cm, 70cm and 140cm, the photovoltaic
The material of grid integration case is stainless steel, and the front of the grid-connected access case is equipped with three fan chamber doors.
Further, the chamber door of the ammeter box is equipped with transparency window.
The access system of grid-connected access case includes grid-connected access case, inverter, distribution transformer, drop type and melts
Disconnected device, the 3rd breaker and the 4th breaker, one end of the inverter are connected with photovoltaic plate, and the other end connects with grid-connected
Cartonning connects, and one end of grid-connected access case and distribution transformer connects, and the other end and the drop type of distribution transformer fuse
Device connects, and fuse switch is connected on user's 10kV busbares, is set between user 10kV busbares and public electric wire net 10kV circuits
There is the 3rd breaker, the 4th breaker is equipped between public electric wire net 10kV circuits and public electric wire net 10kV busbares.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, surge of the Surge Protector to direct, indirect thunder and lightning or instantaneous overvoltage is protected；Increase arrester and take shelter from the thunder
Device electric brake prevents wherein some part fails, causes serious consequence equivalent to duplicate protection is added；
2nd, electric energy meter is three-phase intelligent electric-energy meter, fully ensures that the accuracy of metering；
3rd, concentrator is equipped with ammeter box, system maintenance can be made convenient；
4th, fuse type disconnector can ensure that the safety of circuit service personnel；
5th, the chamber door of ammeter box is equipped with transparency window, can observe electric energy meter at any time in the case of without opening chamber door.
Brief description of the drawings：
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the front view of the present invention；
The system schema that Fig. 3 is the present invention accesses schematic diagram.
In figure：1st, ammeter box；2nd, isolation board；3rd, the first breaker；4th, the second breaker；5th, Surge Protector；6th, take shelter from the thunder
Device electric brake；7th, arrester；8th, protector with automatic reconnection for leakage of electricity；9th, inverter switching device；10th, grid connection box；11st, Fuse Type is kept apart
Close；12nd, line bank；13rd, concentrator；14th, electric energy meter；15th, transparency window；16th, chamber door；17th, photovoltaic plate；18th, inverter；19、
Grid-connected access case；20th, distribution transformer；21st, fuse switch；22nd, user 10kV busbares；23rd, the 3rd breaker；
24th, public electric wire net 10kV circuits；25th, the 4th breaker；26th, public electric wire net 10kV busbares.
Embodiment：
Below by specific embodiment and with reference to attached drawing, the invention will be further described.
Embodiment 1：
As shown in Figure 1, a kind of grid-connected access case, including ammeter box 1 and grid connection box 10, ammeter box 1 and grid connection box 10
Between be equipped with isolation board 2, ammeter box 1 is located at the top of grid connection box 10, and isolation board 2 is equipped with threading hole, electricity is equipped with ammeter box 1
Can table 14, the top of grid connection box 10 is mounted with line bank 12, be equipped with grid connection box 10 first breaker 3, Surge Protector 5,
Protector with automatic reconnection for leakage of electricity 8, inverter switching device 9 and fuse type disconnector 11；One end of first breaker 3 is protected with surge
Shield device 5 connects, and the other end is connected by line bank 12 with electric energy meter 14；Protector with automatic reconnection for leakage of electricity 8 passes through line bank 12
It is connected respectively with electric energy meter 14 and fuse type disconnector 11；One end of inverter switching device 9 passes through line bank 12 and electric energy meter 14
Connection, the other end are connected with inverter 18.
Embodiment 2：
A kind of grid-connected access case, ammeter box 1 is interior to be equipped with concentrator 13, and concentrator 13 is connected with electric energy meter 14；It is grid-connected
The second breaker 4 is equipped with case 10, the second breaker 4 is connected with the first breaker 3, electric energy meter 14 and inverter switching device 9 respectively.
Other parts are same as Example 1.
Embodiment 3：
As shown in Fig. 2, a kind of grid-connected access case, arrester electric brake 6 and arrester 7 are additionally provided with grid connection box 10, is kept away
One end ground connection of thunder device 7, the other end are connected with one end of arrester electric brake 6, and the other end of arrester electric brake 6 passes through line bank 12
It is connected respectively with inverter switching device 9 and electric energy meter 14；Electric energy meter 14 is three-phase intelligent electric-energy meter；Grid-connected access case 19
Length is respectively 120cm, 70cm and 140cm, and the material of grid-connected access case 19 is stainless steel, grid-connected to connect
The front of cartonning 19 is equipped with three fan chamber doors 16；The chamber door 16 of ammeter box 1 is equipped with transparency window 15.Other parts and 2 phase of embodiment
Together.
Embodiment 4：
As shown in figure 3, a kind of access system using grid-connected access case includes grid-connected access case 19, inverter
18th, distribution transformer 20, fuse switch 21, the 3rd breaker 23 and the 4th breaker 25, one end of inverter 18 and light
Volt plate 17 connects, and the other end is connected with grid-connected access case 19, grid-connected access case 19 and the one of distribution transformer 20
End connection, the other end of distribution transformer 20 are connected with fuse switch 21, and fuse switch 21 is connected to user 10kV
On busbar 22, the 3rd breaker 23, public electric wire net 10kV are equipped between user 10kV busbares 22 and public electric wire net 10kV circuits 24
The 4th breaker 25 is equipped between circuit 24 and public electric wire net 10kV busbares 26.
Surge of the Surge Protector 5 to direct, indirect thunder and lightning or instantaneous overvoltage is protected；Increase arrester 7 and take shelter from the thunder
Device electric brake 6 prevents wherein some part fails, causes serious consequence equivalent to duplicate protection is added.
Electric energy meter 14 is three-phase intelligent electric-energy meter, fully ensures that the accuracy of metering, precision is active 0.5S grades, idle
2.0 grades, possess the functions such as two-way active and four-quadrant reactive measurement, logout, equipped with standard communication interface；Electric quantity acquisition is believed
Breath can accurately upload to related administration of power networks department.
Concentrator 13 is equipped with ammeter box 1, the model DJGZ23-SEA3700 of concentrator 13, has rapidity, stabilization
Property and reliability；System maintenance can be made convenient, grid entry point relevant information can be checked by backstage, and support backstage is long-range to rise
Level and remote control.
Fuse type disconnector 11 when isolated power supply, disjunction load to can substantially observe, it is ensured that circuit service personnel
Safety.
First breaker 3 and the second breaker 4 play overload and short-circuit protection function, when over-pressed, under-voltage, mistake occurs in circuit
Stream, short circuit, zero curve disconnection, electric leakage etc. can all trigger the first breaker 3 or the second breaker 4 trips, and automatic reclosing leaks electricity
Protector 8 can ensure that automatic close a floodgate again is powered and can automatically save tripping information after a certain interval, including tripping is former
The information such as cause, voltage, electric current, leakage current；It can alarm when breaking down, failure locking, separating brake instruction light at the same time, liquid crystal
Display screen shows corresponding failure cause；Alarm controller and alarming horn need not be further added by, reduces the access of circuit, that is, subtracts
The generation of failure is lacked.
In addition also had using protector with automatic reconnection for leakage of electricity 8：1) under-voltage or overvoltage protection, when voltage is low or high
When setting value, protector disconnects power supply automatically；After voltage is normal, automatic closing is powered；2) short circuit occurs for circuit or electric current is big
When rated current, protector with automatic reconnection for leakage of electricity 8, which disconnects, implements protection；3) it is automatic to disconnect when zero firewire is reversed, avoid
Electric appliance burns the generation with accident；4) closing by hand, when be not required automatic closing when, may be selected manually close a floodgate, completely with
Normal circuit breaker equally operates, from functions such as Electronic controls.
The chamber door 16 of ammeter box 1 is equipped with transparency window 15, can observe electric energy at any time in the case of without opening chamber door 16
Table 14.
Grid-connected access case 19 takes suspension type to install, and lower edge is not less than 2.0m apart from ground, has flood control demand to fit
When increasing；Photovoltaic plate 17 is accessed by grid-connected 19 lower section of access case, and inlet wire uses cable such as copper core, aluminium core or rare earth high-iron
Aluminium alloy core, or crosslinked polyetylene insulated soft copper conducting wire, according to put cable underground laying when, by grid-connected access case 19 bottom
Inlet wire；Grid-connected access 19 outlet of case selects JKTRYJ-1-1 × 300mm to the low-pressure side of distribution transformer 202It is aerial exhausted
Edge conducting wire or ZC-EFR-0.6/1kV-300 flexible cables.
The low-pressure side of distribution transformer 20 is connected with the fuse type disconnector 11 in grid-connected access case 19, photovoltaic panel
Part 17 by inverter 18 with it is grid-connected access case 19 in inverter switching device 9 be connected, the high-pressure side of distribution transformer 20 and
Fuse switch 21 is installed between user 10kV busbares 22, plays a protective role and facilitates switching operation.
Claims (8)
1. a kind of grid-connected access case, including ammeter box (1) and grid connection box (10), between ammeter box (1) and grid connection box (10)
Equipped with isolation board (2), ammeter box (1) is located at the top of grid connection box (10), and the isolation board (2) is equipped with threading hole, the electricity
Electric energy meter (14) is equipped with electricity box (1), line bank (12) is mounted with above the grid connection box (10), it is characterised in that：Institute
State and the first breaker (3), Surge Protector (5), protector with automatic reconnection for leakage of electricity (8), inverter are equipped with grid connection box (10)
Switch (9) and fuse type disconnector (11)；One end of first breaker (3) is connected with Surge Protector (5), the other end
It is connected by line bank (12) with electric energy meter (14)；The protector with automatic reconnection for leakage of electricity (8) passes through line bank (12) difference
It is connected with electric energy meter (14) and fuse type disconnector (11)；One end of the inverter switching device (9) by line bank (12) with
Electric energy meter (14) connects, and the other end is connected with inverter (18).
2. grid-connected access case according to claim 1, it is characterised in that：Concentrator is equipped with the ammeter box (1)
(13), the concentrator (13) is connected with electric energy meter (14).
3. grid-connected access case according to claim 2, it is characterised in that：It is disconnected that second is equipped with the grid connection box (10)
Road device (4), second breaker (4) are connected with the first breaker (3), electric energy meter (14) and inverter switching device (9) respectively.
4. grid-connected access case according to claim 3, it is characterised in that：It is additionally provided with the grid connection box (10) lightning-arrest
Device electric brake (6) and arrester (7), one end ground connection of the arrester (7), the other end are connected with the one end of arrester electric brake (6),
The other end of arrester electric brake (6) is connected with inverter switching device (9) and electric energy meter (14) respectively by line bank (12).
5. grid-connected access case according to claim 4, it is characterised in that：The electric energy meter (14) is three-phase intelligent electricity
Can table.
6. grid-connected access case according to claim 5, it is characterised in that：The grid-connected access case (19)
Length is respectively 120cm, 70cm and 140cm, and the material of the grid-connected access case (19) is stainless steel, described
The front of grid-connected access case (19) is equipped with three fan chamber doors (16).
7. grid-connected access case according to claim 6, it is characterised in that：On the chamber door (16) of the ammeter box (1)
Equipped with transparency window (15).
8. using the access system of the grid-connected access case as described in claim 1-7：It is characterized in that：Including grid-connected
It is disconnected to access case (19), inverter (18), distribution transformer (20), fuse switch (21), the 3rd breaker (23) and the 4th
Road device (25), one end of the inverter (18) are connected with photovoltaic plate (17), and the other end connects with grid-connected access case (19)
Connect, grid-connected access case (19) is connected with one end of distribution transformer (20), and the other end of distribution transformer (20) is with falling
Formula fuse (21) connects, and fuse switch (21) is connected on user 10kV busbares (22), user 10kV busbares (22) with
The 3rd breaker (23), public electric wire net 10kV circuits (24) and public electric wire net 10kV are equipped between public electric wire net 10kV circuits (24)
The 4th breaker (25) is equipped between busbar (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097926.7A CN107968329A (en) | 2017-11-09 | 2017-11-09 | Grid-connected access case and its access system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097926.7A CN107968329A (en) | 2017-11-09 | 2017-11-09 | Grid-connected access case and its access system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107968329A true CN107968329A (en) | 2018-04-27 |
Family
ID=62000027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711097926.7A Pending CN107968329A (en) | 2017-11-09 | 2017-11-09 | Grid-connected access case and its access system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107968329A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683150A (en) * | 2018-06-23 | 2018-10-19 | 安徽富煌电控设备有限公司 | A kind of grid-connected cabinet of automatic reclosing exchange |
| CN108718098A (en) * | 2018-07-17 | 2018-10-30 | 陈二东 | A kind of large-scale photovoltaic wind power information access device |
| CN108879761A (en) * | 2018-06-23 | 2018-11-23 | 安徽富煌电控设备有限公司 | A kind of grid-connected cabinet of sensitivity self-resetting type |
| CN116054412A (en) * | 2023-02-27 | 2023-05-02 | 国网江苏省电力有限公司南京供电分公司 | Low-voltage distributed photovoltaic complete monitoring device |
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| CN103364631A (en) * | 2013-07-26 | 2013-10-23 | 国家电网公司 | High-voltage user photovoltaic power generation electric energy metering system and method thereof |
| CN205429554U (en) * | 2016-03-21 | 2016-08-03 | 大连电力勘察设计院有限公司 | Small -size low pressure distributing type photovoltaic power plant inserts public power grid's complete set combination equipment |
| CN205863941U (en) * | 2016-07-14 | 2017-01-04 | 嘉兴恒创电力设计研究院有限公司 | A kind of point of family low pressure grid-connected access case |
| CN107026473A (en) * | 2017-05-06 | 2017-08-08 | 杨子琦 | A kind of grid-connected control cabinet of novel intelligent economize on electricity |
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2017
- 2017-11-09 CN CN201711097926.7A patent/CN107968329A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364631A (en) * | 2013-07-26 | 2013-10-23 | 国家电网公司 | High-voltage user photovoltaic power generation electric energy metering system and method thereof |
| CN205429554U (en) * | 2016-03-21 | 2016-08-03 | 大连电力勘察设计院有限公司 | Small -size low pressure distributing type photovoltaic power plant inserts public power grid's complete set combination equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683150A (en) * | 2018-06-23 | 2018-10-19 | 安徽富煌电控设备有限公司 | A kind of grid-connected cabinet of automatic reclosing exchange |
| CN108879761A (en) * | 2018-06-23 | 2018-11-23 | 安徽富煌电控设备有限公司 | A kind of grid-connected cabinet of sensitivity self-resetting type |
| CN108718098A (en) * | 2018-07-17 | 2018-10-30 | 陈二东 | A kind of large-scale photovoltaic wind power information access device |
| CN108718098B (en) * | 2018-07-17 | 2022-12-20 | 国网浙江省电力有限公司杭州市富阳区供电公司 | Large-scale photovoltaic wind power information access device |
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Application publication date: 20180427 |