High-power-density electric energy metering box

Abstract

The utility model provides a high power density electric energy metering box, the high power density electric energy metering box comprises a box body, an electric energy metering module, internal vertical beams, internal cross beams, a safe operation controller, a main switch and a branch switch, the box body forms a main body frame, the left side and the right side of the interior of the box body are respectively provided with one internal vertical beam, and the internal cross beams are arranged in the box body. The internal cross beam is mounted in the box body, the internal cross beam is vertically connected with the internal vertical beam, the internal cross beam is fixed on the internal vertical beam through a fastener, and the internal cross beam and the internal vertical beam form a bearing area and form an integral structure with the box body; the electric energy metering module, the safe operation controller, the main switch and the branch switch are arranged in the bearing area; according to the utility model, the modularized electric energy metering modules of the plurality of independent measuring units are arranged in a transverse and compact manner so as to accommodate more independent metering channels, and meanwhile, the safe operation controller is configured to identify an abnormal state so as to automatically realize protection.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically a high power density power metering box. Background Technology

[0002] Whether it's building energy consumption or the energy consumption of key energy-consuming units, the first step to achieving energy conservation and carbon reduction is monitoring. Only by quantifying carbon levels can management goals be set and effective measures implemented. Against this backdrop, high-power-density electricity metering boxes have continuously improved and evolved into mature products through practical applications in online energy consumption monitoring systems.

[0003] Building energy consumption monitoring requires more detailed electricity usage data for demand analysis. Traditional electricity metering boxes are usually installed in the building's electrical shaft. Due to the generally small space, ordinary electricity metering boxes can only hold about 24-36 electricity meters at most, which is far from meeting the actual needs of building energy consumption monitoring systems. Utility Model Content

[0004] To overcome the aforementioned problems in the existing technology, this utility model provides a high power density energy metering box, which adopts the following technical solution:

[0005] A high power density electricity metering box includes a box body 1, an electricity metering module 2, internal vertical beams 3, internal horizontal beams 4, a safety operation controller 5, a main switch 6, and branch switches 7. The box body 1 forms the main frame, and an internal vertical beam 3 is provided on each of the left and right sides inside the box body 1. An internal horizontal beam 4 is installed inside the box body 1 and is vertically connected to the internal vertical beams 3. The internal horizontal beam 4 is fixed to the internal vertical beams 3 by fasteners. The internal horizontal beam 4 and the internal vertical beams 3 form a load-bearing area and form an integral structure with the box body 1.

[0006] The power metering module 2, the safety operation controller 5, the main switch 6, and the branch switch 7 are located within the load-bearing area; the power metering module 2, the main switch 6, and the branch switch 7 are fixed on the internal crossbeam 4.

[0007] Furthermore, at least six power metering modules 2 are configured inside the enclosure 1.

[0008] Furthermore, the internal crossbeam 4 is equipped with mounting rails 401, and the power metering modules 2 are installed in rows on the rails 401; the branch switches 7 are installed in rows on the rails 401.

[0009] Furthermore, the width of the mounting rail 401 is 35mm.

[0010] Furthermore, the neutral wire 201 of the power metering module 2 on the same internal beam 4 is connected in a hand-held manner.

[0011] Furthermore, the current circuit of the power metering module 2 adopts one incoming line 202 and two independent power metering outgoing lines. The two independent power metering outgoing lines are power metering outgoing line one 203 and power metering outgoing line two 204.

[0012] Furthermore, the electricity metering modules 2, arranged in a row, are grouped in multiples of 3.

[0013] Furthermore, the incoming line 202 of the power metering module is connected to each power metering module 2 according to the principle of three-phase balance. Each power metering module 2 is connected to a data communication line 205 on the non-power line side, and the data communication line 205 is used to collect the data to the safety operation controller 5.

[0014] Furthermore, the safety operation controller 5 collects the current data of each power metering module 2 in real time. When the collected data exceeds the preset safety operation parameters of the equipment after calculation by a preset formula, the power-off operation is automatically executed.

[0015] Furthermore, the preset formula is the three-phase current imbalance calculation formula. Assuming there are 3n energy metering blocks, the specific calculation process is as follows:

[0016]

[0017] In the formula:

[0018] I a I a1 ... I an These represent the currents of the n energy metering blocks connected to phase a of the incoming line;

[0019] I b I b1 ... I bn These represent the currents of the n energy metering blocks connected to phase b of the incoming line;

[0020] I c I c1 ... I cn These represent the currents of the n energy metering blocks connected to phase c of the incoming line;

[0021] I ag The average value of the three-phase current;

[0022] I UR This refers to the unbalance of the three-phase current.

[0023] When the imbalance of the three-phase current exceeds the preset safe operating parameters of the equipment, the power-off operation is automatically executed.

[0024] Furthermore, the safety operation controller 5 collects the operating temperature values ​​of each power metering module 2 in real time. When the operating temperature of a power metering module 2 exceeds the set safety operating value, it automatically performs a power-off operation.

[0025] Furthermore, the safety operation controller 5 collects the voltage values ​​of each power metering module 2 in real time. When the voltage value of a power metering module 2 exceeds the set safety operation value, it automatically performs a power-off operation.

[0026] This utility model has the following beneficial effects:

[0027] This utility model utilizes a compact modular energy metering module with multiple independent measuring units, arranged horizontally to save space. This allows for more independent metering channels to be accommodated within a similar volume to traditional metering boxes, enabling 4-5 times more energy meters to be installed. This overcomes the shortcomings of existing technologies, such as large installation space requirements and high application costs. The energy metering box is equipped with a safety operation controller that collects real-time three-phase voltage, current, and temperature data. When the safety operation controller detects an abnormal state, it performs corresponding protective actions based on preset parameters, greatly improving the product's safety protection capabilities, stable operation, and ensuring safe and reliable operation.

[0028] This utility model can accommodate more than 112 electricity meters in a single box, and optimizes the internal structure of the electricity meters to one input and two outputs. Since they are completely independent electricity metering elements, they are equivalent to two electricity meters. Therefore, the entire metering box has more than 224 independent logic electricity metering channels. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the high power density electricity metering box of this utility model;

[0030] Figure 2 This is a schematic diagram of the internal crossbeam structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the neutral wire structure of this utility model;

[0032] Figure 4 Figure 5 This is a schematic diagram of the inlet and outlet circuit connections of the power metering module of this utility model;

[0033] Figure 6 This is a schematic diagram showing the connection between the three-phase incoming line, the data communication line, and the safety operation controller of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Enclosure; 2. Energy metering module; 201. Neutral line; 202. Metering module inlet line; 203. Energy metering outlet line one; 204. Energy metering outlet line two; 205. Metering module data communication line; 3. Internal vertical beam; 4. Internal horizontal beam; 401. Mounting rails on the internal horizontal beam; 5. Safety operation controller; 6. Main switch; 7. Branch switches. Detailed Implementation

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the high power density electricity metering box of this utility model. The high power density electricity metering box includes a box body 1, an electricity metering module 2, an internal vertical beam 3, an internal horizontal beam 4, a safety operation controller 5, a main switch 6, and branch switches 7.

[0039] The box body 1 forms the main frame. An internal vertical beam 3 is set on each of the left and right sides inside the box body 1. An internal horizontal beam 4 is installed inside the box body 1. The internal horizontal beam 4 is vertically connected to the internal vertical beam 3. The internal horizontal beam 4 is fixed to the internal vertical beam 3 by fasteners. The internal horizontal beam 4 and the internal vertical beam 3 form a load-bearing area and form an integral structure with the box body 1.

[0040] The power metering module 2, the safety operation controller 5, the main switch 6, and the branch switch 7 are located within the load-bearing area; the power metering module 2, the main switch 6, and the branch switch 7 are fixed on the internal crossbeam 4.

[0041] Please refer to Figure 2 , Figure 2This is a schematic diagram of the internal crossbeam structure of this utility model; the internal crossbeam 4 is equipped with a mounting rail 401, and the power metering modules 2 are installed in rows on the rail 401; the branch switches 7 are installed in rows on the rail 401.

[0042] In this embodiment, the width of the mounting rail 401 is 35mm.

[0043] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the neutral wire structure of this utility model; the neutral wire 201 of the power metering module 2 on the same internal crossbeam 4 is connected by hand.

[0044] In this embodiment of the application, the power metering modules 2 arranged in a row are grouped in multiples of 3.

[0045] Figure 4 Figure 5 This is a schematic diagram of the inlet and outlet lines of the power metering module of this utility model; the current line of the power metering module 2 adopts one inlet line 202 and two independent power metering outlet lines, the two independent power metering outlet lines are power metering outlet line one 203 and power metering outlet line two 204.

[0046] Figure 6 This is a schematic diagram showing the connection between the three-phase incoming line, the data communication line, and the safety operation controller of this utility model.

[0047] The incoming line 202 of the power metering module is connected to each power metering module 2 (i.e., according to the principle of three-phase balance) Figure 6 The three-phase power lines L1, L2, and L3 of the power line are connected in parallel to the power metering module 2. Each power metering module 2 is connected to a data communication line 205 on the non-power line side, and the data is collected by the data communication line 205 to the safety operation controller 5.

[0048] In this embodiment, the safety operation controller 5 collects current data from each power metering module 2 in real time. When the collected data exceeds the preset safety operation parameters calculated by a preset formula, it automatically performs a power-off operation to protect the safe operation of the high-power-density power metering box. The preset formula is a three-phase current imbalance calculation formula. Assuming there are 3n power metering modules, the specific calculation process is as follows:

[0049]

[0050] In the formula:

[0051] I a I a1 ... I an These represent the currents of the n energy metering blocks connected to phase a of the incoming line;

[0052] I b I b1 ... I bn These represent the currents of the n energy metering blocks connected to phase b of the incoming line;

[0053] I c I c1 ... I cn These represent the currents of the n energy metering blocks connected to phase c of the incoming line;

[0054] I ag The average value of the three-phase current;

[0055] I UR This refers to the unbalance of the three-phase current.

[0056] When the imbalance of the three-phase current exceeds the preset safe operating parameters of the equipment, the power-off operation is automatically executed, that is, the power metering module of the phase with the higher current is cut off in sequence.

[0057] In this embodiment, the safety operation controller 5 collects the voltage values ​​of each power metering module 2 in real time. When the voltage value of a power metering module 2 exceeds the set safety operation value, it automatically performs a power-off operation (performs a power-off operation on the power metering module 2 that causes the voltage abnormality) to ensure the safe operation of the equipment and protect downstream electrical appliances from being damaged by abnormal voltage.

[0058] In this embodiment, the safety operation controller 5 collects the operating temperature values ​​of each power metering module 2 in real time. When the operating temperature of a power metering module 2 exceeds the set safety operating value, it automatically performs a power-off operation (performs a power-off operation on the power metering module 2 that causes the temperature abnormality) to ensure the safe operation of the equipment.

[0059] This invention uses a hand-held connection method for the neutral wire 201 of multiple energy metering modules 2, saving component installation space. The current circuit of the energy metering module 2 adopts one incoming line 202 and two independent energy metering outgoing lines, namely energy metering outgoing line one 203 and energy metering outgoing line two 204. Because the energy metering module achieves one incoming line and two outgoing lines while ensuring complete electrical clearance and creepage distance, and adopts a narrow panel design, it can accommodate at least four logic energy meters with the same function in the installation space of a traditional single energy meter.

[0060] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A high power density electricity metering box, comprising a box body (1), an electricity metering module (2), an internal vertical beam (3), an internal horizontal beam (4), a safety operation controller (5), a main switch (6), and branch switches (7), characterized in that, The box (1) forms the main frame. An internal vertical beam (3) is set on each of the left and right sides inside the box (1). An internal horizontal beam (4) is installed inside the box (1). The internal horizontal beam (4) is vertically connected to the internal vertical beam (3). The internal horizontal beam (4) is fixed to the internal vertical beam (3) by fasteners. The internal horizontal beam (4) and the internal vertical beam (3) form a load-bearing area and form an integral structure with the box (1). The power metering module (2), the safety operation controller (5), the main switch (6), and the branch switch (7) are located in the bearing area; the power metering module (2), the main switch (6), and the branch switch (7) are fixed on the internal crossbeam (4).

2. The high power density energy metering box according to claim 1, characterized in that, At least 6 power metering modules (2) are configured inside the enclosure (1).

3. The high power density energy metering box according to claim 1, characterized in that, An installation rail (401) is mounted on the internal crossbeam (4), and the power metering modules (2) are installed in rows on the rail (401); the branch switches (7) are installed in rows on the rail (401).

4. The high power density energy metering box according to claim 2, characterized in that, The width of the guide rail (401) is 35mm.

5. The high power density energy metering box according to claim 3, characterized in that, The neutral wire (201) of the power metering module (2) on the same internal beam (4) is connected by hand.

6. The high power density energy metering box according to claim 1, characterized in that, The current line of the power metering module (2) adopts one incoming line (202) and two independent power metering outgoing lines. The two independent power metering outgoing lines are power metering outgoing line one (203) and power metering outgoing line two (204).

7. The high power density energy metering box according to claim 3, characterized in that, The electricity metering modules (2) are arranged in a row and grouped in multiples of 3.

8. The high power density energy metering box according to claim 1, characterized in that, The incoming line (202) of the power metering module is connected to each power metering module (2) according to the principle of three-phase balance. Each power metering module (2) is connected to a data communication line (205) on the non-power line side, and the data communication line (205) is used to collect the data to the safety operation controller (5).

9. The high power density energy metering box according to claim 1, characterized in that, The safety operation controller (5) collects the current data of each power metering module (2) in real time. When the collected data exceeds the preset safety operation parameters of the equipment by the preset formula, the power-off operation is automatically executed.

10. The high power density energy metering box according to claim 9, characterized in that, The safety operation controller (5) collects the operating temperature values ​​of each power metering module (2) in real time. When the operating temperature of a power metering module (2) exceeds the set safety operating value, it automatically performs a power-off operation.

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