Intelligent power distribution cabinet with power quality monitoring function

Abstract

The utility model discloses an intelligent power distribution cabinet with power quality monitoring function, including the cabinet body and power quality monitoring module, the cabinet body bottom is provided with the mounting frame, the inside installation drawer is provided with in mounting frame, the both sides of installation drawer are through slide rail and the both sides of mounting frame slide fit, installation drawer includes drawer panel and drawer main body, drawer main body is fixed in drawer panel one side, the drawer panel surface is provided with the installation mouth, the back of drawer main body is provided with the incoming line hole, the shell panel of power quality monitoring module is installed in the installation mouth department, the organism of power quality monitoring module is placed in the inside drawer main body, and the cabinet body is as the basic bearing frame, and the bottom mounting frame adopts the integral structure design, provides the standardization installation module for installation drawer. Installation drawer forms the slide fit mechanism through both sides slide rail and mounting frame, realizes the maintainability design of power quality monitoring module.

Description

Technical Field

[0001] This utility model belongs to the field of power distribution cabinet technology, specifically relating to an intelligent power distribution cabinet with power quality monitoring function. Background Technology

[0002] With the rapid development of industrial automation and smart grids, power quality monitoring has become a crucial aspect of ensuring the stable operation of power systems. In low-voltage distribution systems, real-time monitoring of parameters such as voltage fluctuations, harmonic distortion, and three-phase imbalance is of great significance for fault early warning and energy efficiency optimization. Currently, the deployment of power quality monitoring modules in intelligent distribution cabinets with power quality monitoring functions mainly falls into two categories: external independent type and cabinet door-mounted type, but both have significant drawbacks.

[0003] For external, stand-alone monitoring modules, they need to be installed separately outside the distribution cabinet and connected to the internal busbars or current transformers via cables. This method results in complex wiring, occupies additional space, and lacks structural integration between the external device and the distribution cabinet itself, making it difficult to meet the protection rating (IP) requirements of industrial sites. Another common solution is to directly fix the monitoring module inside the distribution cabinet door. Although this reduces space occupation, the cabinet door area is adjacent to high-current equipment such as busbars and circuit breakers. The strong electromagnetic fields generated during operation can easily interfere with the sensors and signal processing circuits of the monitoring module, leading to problems such as harmonic measurement errors and voltage sampling distortion. At the same time, the mechanical vibration generated by frequent opening and closing of the cabinet door may cause the module connectors to loosen, posing a risk of poor contact over long-term use. In addition, monitoring modules installed in the cabinet door are usually far from the ventilation and heat dissipation paths inside the cabinet, and are prone to performance degradation or even damage due to overheating under high-temperature conditions, affecting the long-term reliability of monitoring data.

[0004] To address the aforementioned issues, this utility model proposes an intelligent power distribution cabinet that can efficiently integrate power quality monitoring devices within a limited space, while also considering anti-interference capabilities, heat dissipation performance, and ease of maintenance, thereby meeting the high-precision and high-reliability monitoring requirements of intelligent power distribution systems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent power distribution cabinet with power quality monitoring function, comprising a cabinet body and a power quality monitoring module. A mounting frame is provided at the bottom of the cabinet body, and a mounting drawer is provided inside the mounting frame. Both sides of the mounting drawer are slidably engaged with the sides of the mounting frame via slide rails. The mounting drawer includes a drawer panel and a drawer body. The drawer body is fixed to one side of the drawer panel. An installation opening is provided on the surface of the drawer panel, and a cable inlet hole is provided on the back of the drawer body. The outer shell panel of the power quality monitoring module is installed at the installation opening, and the body of the power quality monitoring module is placed inside the drawer body. Heat dissipation and ventilation slots are evenly provided on both sides of the mounting drawer.

[0006] As a preferred embodiment of this utility model, the cabinet body and the installed drawer are internally interconnected.

[0007] As a preferred technical solution of this utility model, the heat dissipation and ventilation groove is opened at the top and bottom of the sliding fit of the installation drawer, and the inner side is covered with a dustproof net. The heat dissipation and ventilation groove is a horizontal strip groove structure.

[0008] As a preferred embodiment of this utility model, the outer panel of the power quality monitoring module is fixed to the mounting port on the surface of the drawer panel by screws.

[0009] As a preferred technical solution of this utility model, the cabinet body and the installed drawer are all made of galvanized steel.

[0010] As a preferred technical solution of this utility model, the cabinet is fixed with legs at the bottom corner of the mounting frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The cabinet body of this utility model serves as the basic load-bearing frame, and the bottom mounting frame adopts an integrated structural design, providing a standardized installation module for the installation drawer. The installation drawer forms a sliding engagement mechanism with the mounting frame through the slide rails on both sides, realizing the maintainability design of the power quality monitoring module. When it is necessary to perform maintenance or calibration operations on the power quality monitoring module, the drawer body can be pulled out laterally along the slide rail, so that the monitoring module is completely exposed to the outside of the cabinet, avoiding the safety hazards of live work required by traditional cabinet door installation methods, and reducing the impact of maintenance on the internal power distribution system of the cabinet.

[0013] (2) The monitoring module adopts a composite installation method of "exposed panel - built-in body". The outer panel of the power quality monitoring module is fixed to the mounting port of the drawer panel with screws to form a human-machine interface, which facilitates real-time data reading and local parameter configuration; the module body is completely placed inside the drawer body. This layout allows the monitoring module to maintain functional connection with the external operating interface, stay away from interference sources, and effectively avoid electromagnetic coupling interference from strong electromagnetic field sources such as busbars and circuit breakers on the monitoring circuit in the cabinet door installation method, which is conducive to improving the accuracy of monitoring data.

[0014] (3) When the cabinet dissipates heat, hot air rises naturally, and the temperature at the bottom is usually lower than that at the top. Installing a power quality monitoring module at the bottom can reduce the risk of performance degradation or failure of the module due to high temperature. Moreover, the module can be inspected without climbing, which is suitable for frequent maintenance scenarios. Power and signal lines can be directly connected from the back of the installation drawer, reducing cable length and complexity. Installing a power quality monitoring module at the bottom of the cabinet lowers the center of gravity and reduces the risk of cabinet shaking caused by the drawer being pulled out. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0018] Figure 3 This is a schematic diagram of the structure of the drawer body of this utility model when pulled out;

[0019] In the diagram: 1. Cabinet; 2. Power quality monitoring module; 3. Mounting frame; 4. Drawer installation; 5. Drawer panel; 6. Drawer body; 7. Mounting port; 8. Cable inlet; 9. Ventilation slot; 10. Dustproof net; 11. Support legs. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figure 1-3 This utility model provides the following technical solution: an intelligent power distribution cabinet with power quality monitoring function, including a cabinet body 1 and a power quality monitoring module 2. The bottom of the cabinet body 1 is provided with a mounting frame 3, and the mounting frame 3 is provided with a mounting drawer 4. The two sides of the mounting drawer 4 are slidably engaged with the two sides of the mounting frame 3 through slide rails. The mounting drawer 4 includes a drawer panel 5 and a drawer body 6. The drawer body 6 is fixed to one side of the drawer panel 5. The surface of the drawer panel 5 is provided with a mounting opening 7, and the back of the drawer body 6 is provided with a wire inlet hole 8. The outer shell panel of the power quality monitoring module 2 is installed at the mounting opening 7. The body of the power quality monitoring module 2 is placed inside the drawer body 6. The two sides of the mounting drawer 4 are evenly provided with heat dissipation and ventilation slots 9.

[0023] In order to integrate the heat dissipation system of the monitoring module with the overall thermal management system of the cabinet 1 and improve heat dissipation efficiency through natural convection, in this embodiment, as a preferred technical solution of the present invention, the cabinet 1 and the installation drawer 4 are internally interconnected.

[0024] In order to construct an efficient convection heat dissipation channel and reduce the entry of dust particles into the cabinet 1, in this embodiment, as a preferred technical solution of the present invention, the heat dissipation ventilation groove 9 is opened at the top and bottom of the sliding fit of the installation drawer 4, and the inner side is covered with a dustproof net 10. The heat dissipation ventilation groove 9 is a horizontal strip groove structure.

[0025] In order to create a human-computer interaction interface for easy operation and maintenance, and at the same time to improve the anti-electromagnetic interference capability by constructing a physical isolation space through the drawer body 6, in this embodiment, as a preferred technical solution of the present invention, the outer shell panel of the power quality monitoring module 2 is fixed to the mounting port 7 on the surface of the drawer panel 5 by screws.

[0026] In order to improve the overall rigidity and corrosion resistance of the cabinet body 1 and the installed drawer 4, and to meet the requirements of use in harsh industrial environments, in this embodiment, as a preferred technical solution of the present invention, the cabinet body 1 and the installed drawer 4 are made of galvanized steel.

[0027] In order to reduce the impact of cabinet door 1 opening and closing and external vibration on the monitoring module and improve overall stability, in this embodiment, as a preferred technical solution of the present invention, the cabinet body 1 is fixed with support legs 11 at the bottom dead corner of the mounting frame 3.

[0028] The heat dissipation ventilation slot 9 adopts a horizontally striped slotted structure symmetrically distributed at the top and bottom, arranged in the sliding fit area between the installation drawer 4 and the installation frame 3. This position is exactly in the lower middle part of the natural ventilation path inside the cabinet 1, utilizing the "chimney effect" to form a convection channel for hot and cold air: when the rising airflow generated by heat sources inside the cabinet 1, such as circuit breakers and busbars, is discharged by the cooling fan at the top heat dissipation vent of the cabinet, a negative pressure area is formed on both sides of the drawer, causing external cold air to enter the drawer body 6 through the bottom heat dissipation ventilation slot 9, flow over the surface of the power quality monitoring module 2, and then merge into the main airflow channel of the cabinet 1 along the top ventilation slot. The dustproof mesh 10 covering the inside is made of 200-mesh metal woven mesh to ensure dustproof performance. The structural design of the cabinet 1 and the installation drawer 4 being internally connected allows the power quality monitoring module 2 to be integrated with the overall thermal management system of the cabinet 1, while not hindering the connection between the power quality monitoring module 2 and the electrical components inside the cabinet 1. Compared with the traditional cabinet door installation method, it can reduce the module's operating temperature and effectively delay the aging rate of electronic components.

[0029] Electrical Connection and Protection Principles: The inlet hole 8 adopts a semi-open design to accommodate multi-core cable bundles, and a rubber sealing ring is installed at the edge of the hole for protection. The signal input line and power line of the power quality monitoring module 2 are introduced from the inlet hole 8 of the drawer body 6 through a metal shielding sleeve, forming an independent electrical connection space inside the drawer body 6, maintaining a certain electromagnetic safety distance from the high-voltage, high-current circuit of the upper power distribution area of ​​the cabinet 1. This "bottom-in, top-out" cable layout avoids obstructing the pulling and pulling movement of the installed drawer 4.

[0030] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intelligent power distribution cabinet with power quality monitoring function, comprising a cabinet (1) and a power quality monitoring module (2), characterized in that: The cabinet (1) has an installation frame (3) at the bottom, and an installation drawer (4) is provided inside the installation frame (3). The two sides of the installation drawer (4) are slidably connected to the two sides of the installation frame (3) via slide rails. The installation drawer (4) includes a drawer panel (5) and a drawer body (6). The drawer body (6) is fixed to one side of the drawer panel (5). An installation port (7) is provided on the surface of the drawer panel (5). An inlet hole (8) is provided on the back of the drawer body (6). The outer shell panel of the power quality monitoring module (2) is installed at the installation port (7). The body of the power quality monitoring module (2) is placed inside the drawer body (6). Heat dissipation and ventilation slots (9) are evenly provided on both sides of the installation drawer (4).

2. The intelligent distribution cabinet with power quality monitoring function according to claim 1, characterized in that: The cabinet (1) and the mounting drawer (4) are internally interconnected.

3. The intelligent distribution cabinet with power quality monitoring function according to claim 1, characterized in that: The heat dissipation ventilation slot (9) is opened at the top and bottom of the sliding fit of the installation drawer (4), and the inner side is covered with a dustproof net (10). The heat dissipation ventilation slot (9) is a horizontal strip slot structure.

4. The intelligent distribution cabinet with power quality monitoring function according to claim 1, characterized in that: The outer panel of the power quality monitoring module (2) is fixed to the mounting port (7) on the surface of the drawer panel (5) by screws.

5. The intelligent distribution cabinet with power quality monitoring function according to claim 1, characterized in that: The cabinet (1) and the mounting drawer (4) are both made of galvanized steel.

6. The intelligent distribution cabinet with power quality monitoring function according to claim 1, characterized in that: The cabinet (1) is fixed with legs (11) at the bottom corner of the mounting frame (3).

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