CN216792320U

CN216792320U - Centralized photovoltaic intelligent metering box

Info

Publication number: CN216792320U
Application number: CN202123319078.4U
Authority: CN
Inventors: 陈岗
Original assignee: Xi'an Ruibao Electronic Technology Co ltd
Current assignee: Xi'an Ruibao Electronic Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-21
Anticipated expiration: 2031-12-28

Abstract

The utility model belongs to the technical field of metering boxes, and particularly relates to a centralized photovoltaic intelligent metering box which comprises a metering box, a metering chamber and a wire inlet switch chamber, wherein the metering chamber is arranged in the metering box, the front side wall of the metering chamber is rotatably connected with a box door, and the front side wall of the box door is provided with a window. In the metering box, a grid-connected metering electric meter and a grid-off electric meter can be installed or only the grid-connected metering electric meter can be installed according to the requirements of users. Meanwhile, a three-phase metering ammeter or a two-phase metering ammeter can be installed. The intelligent circuit breaker is installed in front of the grid-connected meter, parameters such as voltage, current and the like in front of the meter are monitored after the user side inverter is subjected to intelligent circuit breaker, and functions such as remote control and automatic reclosing can be achieved.

Description

Centralized photovoltaic intelligent metering box

Technical Field

The utility model relates to the technical field of metering boxes, in particular to a centralized photovoltaic intelligent metering box.

Background

With the rapid increase of installed capacity of distributed photovoltaic, after low-voltage distributed photovoltaic grid connection, the tidal current of a power distribution network can be changed from one direction to two directions, high-frequency harmonic waves are injected into a large number of power electronic devices, photovoltaic over-voltage exceeds the limit, reverse heavy overload is caused by concentrated piece-by-piece development, the power supply quality of a transformer area is greatly influenced, and meanwhile, after a large number of distributed photovoltaic grid connection, the transformer area can have the situation of local island operation.

In the prior art, in the operation and maintenance process, the difficulty of identifying and isolating the distributed power supply by operating personnel is increased, the operating personnel not only face personal safety risks, but also need to break off and check the inverter one by one in the maintenance process, so that the power failure maintenance time is increased, a safe and reliable access mode needs to be explored and established, and grid-connected low-voltage distributed photovoltaic operation management and control work is comprehensively carried out.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.

The present invention has been made in view of the above and/or other problems with existing metrology boxes.

Therefore, the utility model aims to provide a centralized photovoltaic intelligent metering box, which can be used for conveniently designing a digital photovoltaic metering box aiming at the characteristics of small-capacity low-voltage distributed photovoltaic in rural areas to realize the monitoring of small-scale distributed photovoltaic power generation grid connection.

To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:

the utility model provides a centralized photovoltaic intelligence batch meter, includes batch meter, measurement room and inlet wire switch room, the measurement room sets up in the batch meter, the preceding lateral wall of measurement room rotates and is connected with the chamber door, the preceding lateral wall of chamber door is provided with the window, the lateral wall fixed mounting of measurement room inner chamber has first intelligent miniature circuit breaker and the miniature circuit breaker of second intelligence, first intelligent miniature circuit breaker's output has first smart electric meter through the connection of electric lines, the output of the miniature circuit breaker of second intelligence has second smart electric meter through the connection of electric lines, first smart electric meter and second smart electric meter have miniature circuit breaker through the connection of electric lines respectively, the preceding lateral wall of batch meter rotates and is connected with the inlet wire switch room.

As a preferred scheme of a centralized photovoltaic intelligent metering box of this invention, wherein: the lateral wall fixed mounting of measurement indoor chamber has the radiator, the lateral wall of batch meter and inlet wire switch room is provided with the louvre, louvre and measurement room intercommunication.

As a preferred scheme of a centralized photovoltaic intelligent metering box of this invention, wherein: and a small sliding door is arranged on the front side wall of the box door.

As a preferred scheme of a centralized photovoltaic intelligent metering box of this invention, wherein: the lateral wall of service entrance switch room is provided with the data plate, the data plate passes through bolt threaded connection with the lateral wall of service entrance switch room.

As a preferred scheme of a centralized photovoltaic intelligent metering box of this invention, wherein: the front side wall of the box door is provided with a handle lock, and the handle lock is in threaded connection with the front side wall of the box door through a bolt.

Compared with the prior art: in this application document, 1 the characteristics of being convenient for to rural area low capacity low pressure distributed photovoltaic, design digital photovoltaic batch meter, the realization is incorporated into the power networks the control to small-scale distributed photovoltaic power generation, in the batch meter, installation measurement ammeter and the ammeter of logging on the power networks down, install intelligent circuit breaker before the table of being incorporated into the power networks, through intelligent circuit breaker to user side dc-to-ac converter back, voltage before the strapping table, parameters such as electric current monitor, and can realize functions such as remote control and automatic reclosing, 2 dispel the heat in the batch meter through the radiator, improve the radiating effect of batch meter.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:

FIG. 1 is a schematic structural diagram of a centralized photovoltaic intelligent metering box according to the present invention;

FIG. 2 is an exploded view of a structure of a centralized photovoltaic intelligent metering box according to the present invention;

FIG. 3 is a schematic view of the internal structure of a metering chamber of the centralized photovoltaic intelligent metering box according to the present invention;

FIG. 4 is a schematic diagram of a heat sink of a centralized photovoltaic smart batch meter according to the present invention;

fig. 5 is a schematic diagram of the connection inside a metering chamber of the centralized photovoltaic intelligent metering box according to the present invention.

In the figure: 100 batch meters, 200 metering chambers, 210 box doors, 220 windows, 230 first intelligent miniature circuit breakers, 240 first intelligent electric meters, 250 second intelligent miniature circuit breakers, 260 second intelligent electric meters, 270 miniature circuit breakers, 300 incoming line switch chambers, 400 radiators, 410 heat dissipation holes, 500 sliding wicket, 600 nameplates and 700 handle locks.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The utility model provides a centralized photovoltaic intelligent metering box, please refer to fig. 1-5, which comprises a metering box 100, a metering chamber 200 and a wire inlet switch chamber 300, wherein the metering chamber 200 is arranged in the metering box 100, the front side wall of the metering chamber 200 is rotatably connected with a box door 210, the front side wall of the box door 210 is provided with a window 220, the side wall of the inner cavity of the metering chamber 200 is fixedly provided with a first intelligent miniature circuit breaker 230 and a second intelligent miniature circuit breaker 250, the output end of the first intelligent miniature circuit breaker 230 is connected to the wire inlet end of a first intelligent electric meter 240 through a 485 wire, the output end of the second intelligent miniature circuit breaker 250 is connected to the wire inlet end of a second intelligent electric meter 260 through a 485 wire, and the front side wall of the metering box 100 is rotatably connected with the wire inlet switch chamber 300.

The front side wall of the door 210 is provided with a sliding small door 500, by which the micro circuit breaker 270 is conveniently operated through the sliding small door 500.

The lateral wall of service entrance switch room 300 is provided with data plate 600, and data plate 600 passes through bolt threaded connection with the lateral wall of service entrance switch room 300, provides producer's trade mark discernment, brand differentiation, information such as product parameter data inscription, the person of facilitating the use knows through data plate 600 to the user.

The handle lock 700 is arranged on the front side wall of the box door 210, the handle lock 700 is in threaded connection with the front side wall of the box door 210 through bolts, the box door 210 can be opened conveniently through the handle lock 700, and operation is convenient.

With reference to fig. 1 to 4, the centralized photovoltaic intelligent metering box of the embodiment has the following specific use processes: the first intelligent miniature circuit breaker 230 and the second intelligent miniature circuit breaker 250 are internet-of-things intelligent miniature circuit breakers with a data acquisition function, an electric leakage protection function and a remote control function, and the lines, the first intelligent electric meter 240 and the second intelligent electric meter 260 are protected by the first intelligent miniature circuit breaker 230 and the second intelligent miniature circuit breaker 250 under the conditions of overload and short circuit of the lines and equipment; the first intelligent miniature circuit breaker 230 and the second intelligent miniature circuit breaker 250 can be directly controlled through terminal equipment such as a smart phone and a PC (personal computer), voltage, current and power parameters can be read through APP, threshold protection and opening and closing control of each parameter can be set, the well can be shared by other users through expansion functions, and the requirements of different users are met by setting functions such as timing and time delay; the automatic reclosing can be carried out by setting the overvoltage and current values of the first intelligent miniature circuit breaker 230 and the second intelligent miniature circuit breaker 250, the limitation on the voltage, the current value and the like of the photovoltaic power generation grid connection is realized, and the orderly compliance grid connection of dispersed small-scale photovoltaic power generation users is realized; a first intelligent electric meter 240 is arranged at a grid connection point of a photovoltaic user power generation side and comprises an electric energy quality monitoring module, the electric energy production of photovoltaic equipment is measured, and the harmonic content is monitored. The first intelligent miniature circuit breaker 230 and the second intelligent miniature circuit breaker 250 adopt an HPLC communication mode to receive commands to implement grid-connected and off-grid control through the access power line of the metering electric meters connected with the first intelligent miniature circuit breaker 230 and the second intelligent miniature circuit breaker 250 and realize communication connection with a superior management and control platform.

According to grid-connected power generation, a two-phase electric energy meter is preferably adopted for 0-8 kW, a three-phase electric energy meter is preferably adopted for 8 kW-30 kW, and a second intelligent electric meter 260 is arranged at a user power consumption point and used for metering the power consumption of a user.

Fig. 1 to 4 are schematic structural diagrams illustrating a second embodiment of the centralized photovoltaic intelligent metering box of the present invention, please refer to fig. 1 to 4, and different from the above embodiments, a heat sink 400 is fixedly installed on a sidewall of an inner cavity of a metering chamber 200, heat dissipation holes 410 are disposed on sidewalls of the metering box 100 and an inlet switch chamber 300, the heat dissipation holes 410 are communicated with the metering chamber 200, and heat dissipation is performed in the metering box 100 through the heat sink 400, so as to improve a heat dissipation effect of the metering box 100.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of this invention can be used in any combination as long as there is no structural conflict, and the combination is not exhaustively described in this specification merely for the sake of brevity and resource savings. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a centralized photovoltaic intelligence batch meter which characterized in that: comprises a metering box (100), a metering chamber (200) and an inlet switch chamber (300), the metering chamber (200) is arranged in the metering box (100), the front side wall of the metering chamber (200) is rotatably connected with a box door (210), a window (220) is arranged on the front side wall of the box door (210), a first intelligent miniature circuit breaker (230) and a second intelligent miniature circuit breaker (250) are fixedly arranged on the side wall of the inner cavity of the metering chamber (200), the output end of the first intelligent miniature circuit breaker (230) is connected with a first intelligent electric meter (240) through an electric wire, the output end of the second intelligent miniature circuit breaker (250) is connected with a second intelligent electric meter (260) through a wire, the first intelligent electric meter (240) and the second intelligent electric meter (260) are respectively connected with a miniature circuit breaker (270) through electric wires, the front side wall of the metering box (100) is rotatably connected with a wire inlet switch chamber (300).

2. The centralized photovoltaic intelligent metering box of claim 1, which is characterized in that: the lateral wall fixed mounting of measurement room (200) inner chamber has radiator (400), the lateral wall of batch meter (100) and inlet wire switch room (300) is provided with louvre (410), louvre (410) and measurement room (200) intercommunication.

3. A centralized photovoltaic intelligent metering box according to claim 1, characterized in that: the front side wall of the box door (210) is provided with a small sliding door (500).

4. The centralized photovoltaic intelligent metering box of claim 1, which is characterized in that: the lateral wall of inlet wire switch room (300) is provided with data plate (600), data plate (600) pass through bolt threaded connection with the lateral wall of inlet wire switch room (300).

5. The centralized photovoltaic intelligent metering box of claim 1, which is characterized in that: the front side wall of the box door (210) is provided with a handle lock (700), and the handle lock (700) is in threaded connection with the front side wall of the box door (210) through bolts.