CN220172867U - Grid-connected box applicable to rural access distributed photovoltaic - Google Patents
Grid-connected box applicable to rural access distributed photovoltaic Download PDFInfo
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- CN220172867U CN220172867U CN202321350397.8U CN202321350397U CN220172867U CN 220172867 U CN220172867 U CN 220172867U CN 202321350397 U CN202321350397 U CN 202321350397U CN 220172867 U CN220172867 U CN 220172867U
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- 230000001012 protector Effects 0.000 claims description 24
- 230000005611 electricity Effects 0.000 abstract description 6
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 230000002269 spontaneous effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009429 electrical wiring Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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 grid-connected box suitable for rural access distributed photovoltaic, which comprises a box body, wherein a national grid metering box is connected to the box body, an electric energy distribution box, a wiring box and a metering box are arranged in the box body, the electric energy distribution box is connected with the national grid metering box in a line mode, a photovoltaic kilowatt-hour meter, a user kilowatt-hour meter and an electric energy collector are arranged in the metering box, the photovoltaic kilowatt-hour meter and the user kilowatt-hour meter are connected to the electric energy distribution box, the photovoltaic kilowatt-hour meter is connected with the electric energy collector in a line mode, and the user kilowatt-hour meter is connected with the electric energy collector in a line mode. The utility model is characterized in that a user breaker is newly added on the basis of the existing photovoltaic grid-connected box, scattered user cables are collected on a main user breaker, the cable from the original national grid metering box to the user distribution box is connected to the user breaker of the grid-connected box, a cable from the grid-connected box to the national grid metering box is newly added, and the electric meter of the original metering box is replaced by a bidirectional electric meter, so that the ' spontaneous use ' of the distributed photovoltaic and the online surfing of the residual electricity ' can be realized.
Description
Technical Field
The utility model relates to a grid-connected box suitable for rural access to distributed photovoltaic, and belongs to the technical field of power distribution.
Background
The common rural distributed photovoltaic projects often have the phenomena of multiple grid-connected points and complex power distribution conditions, the rural household distribution boxes have small space generally, the problem of no standby loop exists, and the types and the protection setting values of the upper circuit breakers are difficult to match with the capacity of the accessed photovoltaic. The access requirements of the national network company on new energy are strict, some areas require that the electric energy meter is set for checking the electricity taking point and the photovoltaic power generation point of the user, and the gateway settlement electric energy meter is set for the title junction point. The traditional grid-connected box only comprises isolating switches, a special photovoltaic breaker, a surge protector and other electrical equipment, and is only suitable for being directly connected into a user distribution room or a distribution box, so that the problem of difficult metering can be caused, and the metering box is inapplicable in rural distributed photovoltaic projects. If the power distribution system in village is modified, the engineering quantity will be greatly increased, so that many sites suitable for constructing distributed photovoltaic are forced to be abandoned because the problem of power distribution modification cannot be solved, and the waste of resources is caused.
Disclosure of Invention
The utility model aims to provide a grid-connected box suitable for rural access to distributed photovoltaic, wherein a user breaker is newly added on the basis of the existing photovoltaic grid-connected box, scattered user cables are collected on a main user breaker in an electric wiring mode, the cables from an original national grid metering box to a user distribution box are connected to the user breaker of the grid-connected box, a cable from the grid-connected box to the national grid metering box is newly added, an ammeter of the original national grid metering box is replaced to be a bidirectional ammeter, and the 'spontaneous self-use and residual electricity surfing' of the distributed photovoltaic can be realized.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a be applicable to rural distributed photovoltaic of access box that is incorporated into the power networks, includes the case body, be connected with the national net batch meter on the case body, this internal electric energy distribution box, wiring box and batch meter of being provided with of case, electric energy distribution box and national net batch meter line connection are provided with photovoltaic kilowatt-hour meter, user's kilowatt-hour meter and electric energy collector in the batch meter, and photovoltaic kilowatt-hour meter and user's kilowatt-hour meter are all connected in the electric energy distribution box, and photovoltaic kilowatt-hour meter and electric energy collector line connection, user's kilowatt-hour meter and electric energy collector line connection.
The utility model provides a be applicable to rural access distributed photovoltaic's grid-connected box, be provided with isolator, total circuit breaker and the surge protection of line connection in proper order in the electric energy distribution box and use the circuit breaker, isolator and national network batch meter line connection still are provided with user total circuit breaker, photovoltaic circuit breaker and user circuit breaker in the electric energy distribution box, user total circuit breaker and user circuit breaker line connection, photovoltaic kilowatt-hour meter and photovoltaic circuit breaker line connection, user kilowatt-hour meter and user total circuit breaker line connection.
The grid-connected box suitable for rural access to distributed photovoltaic is characterized in that a surge protector is further arranged in the electric energy distribution box, and the surge protector is connected with a breaker wire for surge protection.
The grid-connected box suitable for rural access to distributed photovoltaic is characterized in that a current transformer and a wiring terminal are arranged in the wiring box.
The grid-connected box suitable for rural access distributed photovoltaic is characterized in that the box body is further connected with an inverter in a line mode, the inverter is connected with a photovoltaic breaker in a line mode, and a current transformer is arranged on a line between the inverter and the photovoltaic breaker.
The grid-connected box suitable for rural access to distributed photovoltaic is characterized in that the box body is further connected with a junction box in a line mode, the junction box is connected with a photovoltaic breaker in a line mode, and the current transformer is arranged on a line between the junction box and the photovoltaic breaker.
The grid-connected box suitable for rural access to distributed photovoltaic is characterized in that the box body is further connected with a user distribution box in a line mode, and the user distribution box is connected with a user breaker in a line mode.
The utility model provides a be applicable to rural access distributed photovoltaic's grid-connected box, be provided with the user between user circuit breaker and the current transformer and connect the generating line, user circuit breaker and the corresponding setting of user block terminal, user circuit breaker is provided with the multiunit, multiunit user circuit breaker parallel line connects on the user connects the generating line.
Compared with the prior art, the utility model has the following advantages:
1. the generated energy of the photovoltaic station, the self-power consumption of the user and the settlement power of the public connection point can be directly measured, so that the measurement requirements of different provincial power supply bureaus on distributed photovoltaic grid connection are met.
2. The power distribution system of the user is not changed, the engineering quantity is greatly reduced, and the construction difficulty is reduced.
3. The position of the metering point of the national network is not changed, and the approval difficulty of the photovoltaic project access application is reduced.
4. The model and the setting value of the circuit breaker in the grid-connected box can be considered in design, the requirement of the current standard on relay protection is met, and the problem that the upper circuit breaker is not matched with the photovoltaic capacity due to direct photovoltaic access to a user distribution room or a distribution box is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the electrical wiring of example 11 of the present utility model;
fig. 3 is a schematic view of the electrical wiring of example 8 in the present utility model.
Reference numerals: 1-box body, 2-national net batch meter, 3-electric energy distribution box, 4-junction box, 5-batch meter, 6-photovoltaic kilowatt-hour meter, 7-user kilowatt-hour meter, 8-electric energy collector, 9-isolator, 10-total circuit breaker, 11-breaker for surge protection, 12-user connection busbar, 13-user total circuit breaker, 14-photovoltaic circuit breaker, 15-user circuit breaker, 16-surge protector, 17-current transformer, 18-binding post, 19-inverter, 20-combiner box, 21-user distribution box.
The utility model is further described below with reference to the drawings and the detailed description.
Detailed Description
Example 1 of the present utility model: the utility model provides a be applicable to rural distributed photovoltaic of access box that is incorporated into the power networks, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 and national net batch meter 2 line connection, be provided with photovoltaic kilowatt-hour meter 6, user's kilowatt-hour meter 7 and electric energy collector 8 in the batch meter 5, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 and electric energy collector 8 line connection, user's kilowatt-hour meter 7 and electric energy collector 8 line connection.
Example 2 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the utility model discloses a photovoltaic power generation system, including electric energy distribution box 3, user's total circuit breaker 13, photovoltaic circuit breaker 14 and user's circuit breaker 15, be provided with isolator 9, total circuit breaker 10 and the breaker 11 for surge protection that line connects in proper order in the electric energy distribution box 3, isolator 9 and the 2 line connections of national net batch meter, still be provided with user's total circuit breaker 13, photovoltaic circuit breaker 14 and user's circuit breaker 15 in the electric energy distribution box 3, user's total circuit breaker 13 and user's circuit breaker 15 line connection, photovoltaic kilowatt-hour meter 6 and photovoltaic circuit breaker 14 line connection, user's kilowatt-hour meter 7 and user's total circuit breaker 13 line connection.
Example 3 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; the electric energy distribution box 3 is also internally provided with a surge protector 16, and the surge protector 16 is connected with the circuit breaker 11 for surge protection in a line way.
Example 4 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; a surge protector 16 is further arranged in the electric energy distribution box 3, and the surge protector 16 is connected with a circuit breaker 11 for surge protection in a line manner; a current transformer 17 and a connecting terminal 18 are arranged in the junction box 4.
Example 5 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; a surge protector 16 is further arranged in the electric energy distribution box 3, and the surge protector 16 is connected with a circuit breaker 11 for surge protection in a line manner; a current transformer 17 and a wiring terminal 18 are arranged in the wiring box 4; the box body 1 is also connected with an inverter 19 in a line way, the inverter 19 is connected with the photovoltaic breaker 14 in a line way, and the current transformer 17 is arranged on a line between the inverter 19 and the photovoltaic breaker 14.
Example 6 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; a surge protector 16 is further arranged in the electric energy distribution box 3, and the surge protector 16 is connected with a circuit breaker 11 for surge protection in a line manner; a current transformer 17 and a wiring terminal 18 are arranged in the wiring box 4; the box body 1 is also connected with a junction box 20 in a line mode, the junction box 20 is connected with the photovoltaic breaker 14 in a line mode, and the current transformer 17 is arranged on a line between the junction box 20 and the photovoltaic breaker 14.
Example 7 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; a surge protector 16 is further arranged in the electric energy distribution box 3, and the surge protector 16 is connected with a circuit breaker 11 for surge protection in a line manner; a current transformer 17 and a wiring terminal 18 are arranged in the wiring box 4; the box body 1 is also connected with a junction box 20 in a line manner, the junction box 20 is connected with the photovoltaic breaker 14 in a line manner, and the current transformer 17 is arranged on a line between the junction box 20 and the photovoltaic breaker 14; the box body 1 is also connected with a user distribution box 21 in a line mode, and the user distribution box 21 is connected with a user breaker 15 in a line mode.
Example 8 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; a surge protector 16 is further arranged in the electric energy distribution box 3, and the surge protector 16 is connected with a circuit breaker 11 for surge protection in a line manner; a current transformer 17 and a wiring terminal 18 are arranged in the wiring box 4; the box body 1 is also connected with a junction box 20 in a line manner, the junction box 20 is connected with the photovoltaic breaker 14 in a line manner, and the current transformer 17 is arranged on a line between the junction box 20 and the photovoltaic breaker 14; the box body 1 is also connected with a user distribution box 21 in a line way, and the user distribution box 21 is connected with a user breaker 15 in a line way; the user connection bus 12 is arranged between the user circuit breaker 15 and the current transformer 17, the user circuit breaker 15 and the user distribution box 21 are correspondingly arranged, the user circuit breaker 15 is provided with a plurality of groups, and the user circuit breakers 15 are connected to the user connection bus 12 in parallel.
Example 9 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; a surge protector 16 is further arranged in the electric energy distribution box 3, and the surge protector 16 is connected with a circuit breaker 11 for surge protection in a line manner; a current transformer 17 and a wiring terminal 18 are arranged in the wiring box 4; the box body 1 is also connected with an inverter 19 in a line way, the inverter 19 is connected with the photovoltaic breaker 14 in a line way, and the current transformer 17 is arranged on a line between the inverter 19 and the photovoltaic breaker 14; the box body 1 is also connected with a user distribution box 21 in a line way, and the user distribution box 21 is connected with a user breaker 15 in a line way; the user connection bus 12 is arranged between the user circuit breaker 15 and the current transformer 17, the user circuit breaker 15 and the user distribution box 21 are correspondingly arranged, the user circuit breaker 15 is provided with a plurality of groups, and the user circuit breakers 15 are connected to the user connection bus 12 in parallel.
Example 10 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; a surge protector 16 is further arranged in the electric energy distribution box 3, and the surge protector 16 is connected with a circuit breaker 11 for surge protection in a line manner; a current transformer 17 and a wiring terminal 18 are arranged in the wiring box 4; the box body 1 is also connected with an inverter 19 in a line way, the inverter 19 is connected with the photovoltaic breaker 14 in a line way, and the current transformer 17 is arranged on a line between the inverter 19 and the photovoltaic breaker 14; the box body 1 is also connected with a user distribution box 21 in a line way, and the user distribution box 21 is connected with a user breaker 15 in a line way; a user connection bus 12 is arranged between the user circuit breaker 15 and the current transformer 17, the user circuit breaker 15 and the user distribution box 21 are correspondingly arranged, the user circuit breaker 15 is provided with six groups, and the six groups of user circuit breakers 15 are connected to the user connection bus 12 in parallel; wherein, case body 1 is the cuboid, and the material is 304 corrosion resistant plate, installs rain-proof eaves additional, is fit for being used for outdoor. The electric energy distribution box 3, the junction box 4 and the metering box 5 are all provided with stainless steel outdoor hinges, triangular rainproof seal locks are adopted, and wire slots are arranged in the boxes, so that cables can be conveniently routed, and radiating holes are formed in two sides of the box body, so that the temperature in the box body can be effectively reduced; the metering box 5 is provided with transparent glass, so that the electricity charge condition can be conveniently observed; the power transmission line is laid to the national net metering box 2 along the telegraph pole, wherein the bottom of the title demarcation point box body 1 of the user and the power grid is a cable inlet, so that the cables of the national net metering box 2, the inverter 19 and the user distribution box 21 can be conveniently connected, and the box body 1 can be installed on the same rod as the national net metering box 2, can also be hung on a wall or erected on the ground.
Example 11 of the present utility model: the utility model provides a grid-connected box suitable for rural access distributing type photovoltaic, includes case body 1, be connected with national net batch meter 2 on the case body 1, be provided with electric energy distribution box 3, wiring box 4 and batch meter 5 in the case body 1, electric energy distribution box 3 is connected with national net batch meter 2 line, be provided with photovoltaic kilowatt-hour meter 6 in the batch meter 5, user's kilowatt-hour meter 7 and electric energy collector 8, photovoltaic kilowatt-hour meter 6 and user's kilowatt-hour meter 7 are all connected in electric energy distribution box 3, photovoltaic kilowatt-hour meter 6 is connected with electric energy collector 8 line, user's kilowatt-hour meter 7 is connected with electric energy collector 8 line; the electric energy distribution box 3 is internally provided with a disconnecting switch 9, a total breaker 10 and a breaker 11 for surge protection, which are sequentially connected in a line way, the disconnecting switch 9 is connected with the national network metering box 2 in a line way, the electric energy distribution box 3 is internally also provided with a user total breaker 13, a photovoltaic breaker 14 and a user breaker 15, the user total breaker 13 is connected with the user breaker 15 in a line way, the photovoltaic kilowatt-hour meter 6 is connected with the photovoltaic breaker 14 in a line way, and the user watt-hour meter 7 is connected with the user total breaker 13 in a line way; a surge protector 16 is further arranged in the electric energy distribution box 3, and the surge protector 16 is connected with a circuit breaker 11 for surge protection in a line manner; a current transformer 17 and a wiring terminal 18 are arranged in the wiring box 4; the box body 1 is also connected with an inverter 19 in a line way, the inverter 19 is connected with the photovoltaic breaker 14 in a line way, and the current transformer 17 is arranged on a line between the inverter 19 and the photovoltaic breaker 14; the box body 1 is also connected with a user distribution box 21 in a line way, and the user distribution box 21 is connected with a user breaker 15 in a line way; a user connection bus 12 is arranged between the user circuit breaker 15 and the current transformer 17, the user circuit breaker 15 and the user distribution box 21 are correspondingly arranged, the user circuit breaker 15 is provided with two groups, and the two groups of user circuit breakers 15 are connected to the user connection bus 12 in parallel; wherein, case body 1 is the cuboid, and the material is 304 corrosion resistant plate, installs rain-proof eaves additional, is fit for being used for outdoor. The electric energy distribution box 3, the junction box 4 and the metering box 5 are all provided with stainless steel outdoor hinges, triangular rainproof seal locks are adopted, and wire slots are arranged in the boxes, so that cables can be conveniently routed, and radiating holes are formed in two sides of the box body, so that the temperature in the box body can be effectively reduced; the metering box 5 is provided with transparent glass, so that the electricity charge condition can be conveniently observed; the power transmission line is laid to the national net metering box 2-here, the title demarcation point of the user and the power grid along the telegraph pole, then to the user distribution box 21, the bottom of the box body 1 is a cable inlet, cables of the national net metering box 2, the inverter 19 and the user distribution box 21 are conveniently connected, and the box body 1 can be installed with the national net metering box 2 by the same pole, and also can be hung on a wall or erected on the ground.
The working principle of one embodiment of the utility model is as follows: the outgoing line ends of the two groups of user circuit breakers 15 are respectively connected with a user distribution box 21, the incoming line ends are connected with the user total circuit breaker 13 in parallel, the outgoing line ends of the photovoltaic circuit breakers 14 are connected with the bus box 20, the user total circuit breaker 13 and the incoming line ends of the photovoltaic circuit breakers 14 are connected with the total circuit breaker 10 in parallel, the isolating switch 9 can provide obvious break points during maintenance to protect the safety of maintenance staff, the current transformer 17 is used for measuring the current of the cables connected with the user total circuit breaker 13 and the photovoltaic circuit breaker 14, the photovoltaic kilowatt-hour meter 6 and the user kilowatt-hour meter 7 can respectively measure the electric quantity of photovoltaic and users, the electric energy collector 8 can upload electric quantity information to a power supply bureau through a wireless public network, the cables from the national network metering box 2 to the users are connected with the user circuit breaker 15, and the meter of the national network metering box 2 is replaced by only adding one isolating switch 9 to the national network metering box 2, so that the self-use and the residual electricity can realize distributed photovoltaic can be realized.
Claims (8)
1. The utility model provides a be applicable to rural distributed photovoltaic of access, includes case body (1), its characterized in that, be connected with on case body (1) national network batch meter (2), be provided with electric energy distribution box (3) in case body (1), junction box (4) and batch meter (5), electric energy distribution box (3) and national network batch meter (2) line connection, be provided with photovoltaic kilowatt-hour meter (6) in batch meter (5), user kilowatt-hour meter (7) and electric energy collector (8), photovoltaic kilowatt-hour meter (6) and user kilowatt-hour meter (7) all are connected in electric energy distribution box (3), photovoltaic kilowatt-hour meter (6) and electric energy collector (8) line connection, user kilowatt-hour meter (7) and electric energy collector (8) line connection.
2. The grid-connected box suitable for rural access distributed photovoltaic according to claim 1, wherein a disconnecting switch (9), a total breaker (10) and a surge protection breaker (11) which are sequentially connected in a line are arranged in the electric energy distribution box (3), the disconnecting switch (9) is connected with a national grid metering box (2) in a line mode, a user total breaker (13), a photovoltaic breaker (14) and a user breaker (15) are further arranged in the electric energy distribution box (3), the user total breaker (13) is connected with the user breaker (15) in a line mode, the photovoltaic kilowatt-hour meter (6) is connected with the photovoltaic breaker (14) in a line mode, and the user kilowatt-hour meter (7) is connected with the user total breaker (13) in a line mode.
3. The grid-connected box suitable for rural access to distributed photovoltaics according to claim 2 is characterized in that a surge protector (16) is further arranged in the electric energy distribution box (3), and the surge protector (16) is connected with a circuit breaker (11) for surge protection in a wire mode.
4. A grid-tie box suitable for rural access to distributed photovoltaics according to claim 3, characterized in that a current transformer (17) and a connection terminal (18) are arranged in the junction box (4).
5. The grid-connected box suitable for rural access to distributed photovoltaics according to claim 4, wherein the box body (1) is further connected with an inverter (19) in a line mode, the inverter (19) is connected with a photovoltaic breaker (14) in a line mode, and a current transformer (17) is arranged on a line between the inverter (19) and the photovoltaic breaker (14).
6. The grid-connected box suitable for rural access to distributed photovoltaics according to claim 4, wherein the box body (1) is further connected with a combiner box (20) in a line mode, the combiner box (20) is connected with a photovoltaic breaker (14) in a line mode, and a current transformer (17) is arranged on a line between the combiner box (20) and the photovoltaic breaker (14).
7. The grid-connected box suitable for rural access to distributed photovoltaics according to claim 4, wherein the box body (1) is further connected with a user distribution box (21) in a line mode, and the user distribution box (21) is connected with a user circuit breaker (15) in a line mode.
8. The grid-connected box suitable for rural access to distributed photovoltaics according to claim 4, wherein a user connection bus (12) is arranged between the user circuit breaker (15) and the current transformer (17), the user circuit breaker (15) is arranged corresponding to the user distribution box (21), the user circuit breaker (15) is provided with a plurality of groups, and the plurality of groups of user circuit breakers (15) are connected to the user connection bus (12) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321350397.8U CN220172867U (en) | 2023-05-30 | 2023-05-30 | Grid-connected box applicable to rural access distributed photovoltaic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321350397.8U CN220172867U (en) | 2023-05-30 | 2023-05-30 | Grid-connected box applicable to rural access distributed photovoltaic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220172867U true CN220172867U (en) | 2023-12-12 |
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ID=89055856
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321350397.8U Active CN220172867U (en) | 2023-05-30 | 2023-05-30 | Grid-connected box applicable to rural access distributed photovoltaic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220172867U (en) |
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2023
- 2023-05-30 CN CN202321350397.8U patent/CN220172867U/en active Active
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Address after: 100071 11 / F, block B, building 1, yard 6, Automobile Museum East Road, Fengtai District, Beijing Patentee after: Huadian Technology Co.,Ltd. Country or region after: China Address before: 10th Floor, Building B, Huadian Industrial Park, East Road of Automobile Museum, Fengtai District, Beijing Patentee before: HUADIAN HEAVY INDUSTRIES Co.,Ltd. Country or region before: China |