CN209929981U - Active detachable JP cabinet of low pressure - Google Patents

Abstract

The utility model provides a low-voltage active detachable JP cabinet, which comprises a cabinet body, a modularized intelligent distribution transformer assembly and a compensation assembly, wherein a partition plate is arranged in the cabinet body, the partition plate separates the space in the cabinet body into a wire inlet chamber, a wire outlet chamber, a metering chamber and a compensation chamber, the bottom of the compensation chamber is provided with an air inlet, the upper part of the compensation chamber is provided with an air outlet duct, the upper part in the metering chamber is provided with a junction box and a user charging ammeter, and the intelligent distribution transformer assembly and the lower part of the metering chamber are detachably and fixedly arranged in the metering chamber by adopting a drawer type matching structure; the compensation assembly and the compensation chamber are detachably and fixedly arranged in the compensation chamber by adopting a drawer type matching structure, and more than 1 SVG module and capacitance switching module of the compensation assembly are arranged in the compensation chamber. The utility model discloses can solve the unsatisfactory, installation of current JP cabinet compensation effect and when dismantling complex operation, difficult dilatation, the difficult problem of carrying out the integrated management betterly.

Description

A low-voltage active detachable JP cabinet

technical field

The utility model relates to the technical field of low-voltage integrated power distribution, in particular to a low-voltage active detachable JP cabinet.

Background technique

JP cabinet is a new type of comprehensive control box that integrates power distribution, measurement, protection, control, and reactive power compensation.

At present, the common JP cabinet has some shortcomings: only using capacitor compensation may cause under-compensation or over-compensation, slow compensation speed, low power factor, and poor compensation effect. Most of the JPs are installed on the column, which is inconvenient to read the data, the line failure cannot be effectively warned, and it is not easy to comprehensively manage the JP cabinet. In the early installation, later maintenance, disassembly and replacement of parts, the operation is inconvenient and the efficiency is low. When the reconstruction needs to be expanded, the whole cabinet needs to be reconstructed, and the operation is cumbersome.

Utility model content

The purpose of the utility model is to provide a low-voltage active detachable JP cabinet, which solves the problems of unsatisfactory compensation effect of the existing JP cabinet, cumbersome operation during installation and disassembly, difficult to expand capacity, and difficult to carry out comprehensive management.

The technical scheme of the present utility model is: the low-voltage active detachable JP cabinet of the present utility model includes a cabinet body, and its structural characteristics are: it also includes a modular intelligent distribution and transformer component and a compensation component, and the above-mentioned cabinet body is provided with a partition The space in the cabinet is divided into the incoming line room, the outgoing line room, the measuring room and the compensation room. The bottom of the above-mentioned compensation room is provided with an air inlet hole, and the upper part of the compensation room is provided with an air outlet air duct. The upper part is provided with a junction box and a user billing meter, the lower part of the above-mentioned intelligent distribution and transformation components and the measuring room are detachably fixed in the measuring room using a drawer-type matching structure; the above-mentioned compensation components and the compensation Fixed in the compensation room.

A further solution is: intelligent distribution and transformer guide rails are arranged on both sides of the lower part of the above-mentioned measuring chamber, the intelligent distribution and transformer guide rails are fixedly arranged on the partitions on both sides of the measuring chamber, and the bottom of the measuring chamber is provided with an intelligent distribution transformer base; the bottom of the compensation chamber A frame-shaped compensation component base is provided, and two guide plates are provided on both sides of the compensation component base along the depth direction of the frame. The above-mentioned intelligent distribution and transformation component cooperates with the above-mentioned intelligent distribution and transformation guide rail and intelligent distribution and transformation base to form a drawer-type matching structure; the above-mentioned compensation component cooperates with the compensation component base and guide plate to form a drawer-type matching structure.

A further solution is: the above-mentioned intelligent distribution and transformation components include a skeleton, an instrument installation board, an intelligent distribution and transformation terminal, a multi-function meter, a miniature circuit breaker, a temperature and humidity controller, and a through-wall terminal; the above-mentioned skeleton is a cuboid surrounded by a plurality of columns. The instrument mounting plate is fixed on the front end of the skeleton, and the intelligent distribution terminal, multi-function meter, miniature circuit breaker and temperature and humidity controller are fixed on the instrument mounting plate; The terminal is arranged on the upper part of the frame.

A further solution is: the above-mentioned compensation component includes a mounting frame, a fan, a capacitor switching module and an SVG module; the above-mentioned mounting frame includes a column, a bottom plate, an upper plate, a fan installation platform, and an installation and fixing plate; the bottom plate and the upper plate are arranged in parallel and are separated by Its four corners are fixedly connected with 4 uprights, the bottom plate and the upper plate are provided with ventilation holes in the parts corresponding to the SVG modules, and a plurality of module guide rails for module guidance are installed on the bottom plate; the fan installation platform is fixed on the upper plate, and the installation The fixing plate is fixed under the rear end of the installation frame; the fan 32 is fixed on the fan installation platform; more than one capacitor switching module and SVG module are respectively installed, and the capacitor switching module and the SVG module are pulled with the module guide rail on the bottom plate. It is fixedly installed between the bottom plate and the upper plate after being matched.

A further solution is: the above-mentioned SVG module and the capacitor switching module are respectively provided with plug-in parts, which are connected with the corresponding devices in the cabinet in a plug-in way; The power compensation function module, the above-mentioned capacitor switching module is controlled and operated by the above-mentioned SVG module.

A further solution is: the air outlet duct of the compensation room is composed of shutters, steel meshes, waterproof boxes and water baffles.

The utility model has positive effects: (1) The low-voltage active detachable JP cabinet of the present utility model can provide reactive power compensation in real time and continuously by setting the SVG module, so as to solve the problem of under-compensation, over-compensation, and inability of real-time compensation for the JP cabinet. Following the problem of compensation, the power factor is improved. (2) The low-voltage active detachable JP cabinet of the present invention can directly change the number of SVG modules and capacitor switching modules in the compensation component to achieve the purpose, or change the SVG module when it is necessary to rebuild and expand or change the capacity of the device. And the capacity of the capacitor switching module to achieve the purpose, the replacement is convenient and simple, and the speed is fast. (3) The low-voltage active detachable JP cabinet of the present utility model comprehensively manages the whole device by adding intelligent distribution and transformer components, and integrates functions such as data collection and display settings, the action of each circuit breaker in the device, and temperature and humidity control. . (4) The low-voltage active detachable JP cabinet of the present invention divides the entire device into a cabinet body, a compensation component and an intelligent distribution and transformation component. During production, the compensation part and the intelligent The distribution transformer part is directly assembled as an independent component, and it does not need to work in a small cabinet space, which greatly improves the convenience and efficiency of installation; it is convenient to drag the entire component out for inspection during maintenance, and the entire component can be replaced during emergency repairs , shorten the repair time.

Description of drawings

Fig. 1 is the structural representation of the utility model, and the cabinet door of the JP cabinet is omitted in the figure and is not drawn;

Fig. 2 is the rear view of Fig. 1, and the rear cover of the cabinet is omitted in the drawing;

Fig. 3 is the structural schematic diagram after removing the intelligent distribution transformer assembly and the compensation assembly in Fig. 1;

Fig. 4 is the three-dimensional structure schematic diagram of the intelligent distribution transformer assembly in Fig. 1;

Fig. 5 is the structural schematic diagram of the compensation component in Fig. 1;

FIG. 6 is a schematic three-dimensional structural diagram of the SVG module and the capacitor switching module in FIG. 5 after being taken out.

The reference numerals in the above drawings are as follows:

Cabinet 1, partition 11, incoming line room 12, measuring room 13, intelligent distribution transformer guide rail 13-1, intelligent distribution transformer base 13-2, compensation chamber 14, compensation component base 14-1, guide plate 14-2, Air outlet duct 14-3, outlet room 15;

Intelligent distribution transformer assembly 2, skeleton 21, instrument installation board 22, intelligent distribution transformer terminal 23, multi-function meter 24, miniature circuit breaker 25, temperature and humidity controller 26, wall terminal 27;

Compensation component 3, mounting frame 31, upright column 31-1, bottom plate 31-2, upper plate 31-3, fan installation platform 31-4, installation fixing plate 31-5, wind deflector 31-6, fan 32, capacitor throw Cut module 33, SVG module 34.

Detailed ways

The present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

(Example 1)

Referring to FIGS. 1 to 3 , the low-voltage active detachable JP cabinet of this embodiment is mainly composed of a cabinet 1 , an intelligent distribution transformer assembly 2 and a compensation assembly 3 .

The cabinet body 1 is composed of a main body, a cabinet door (omitted and not shown in the figure), and a back cover (omitted and not shown in the figure). , measurement room 13, compensation room 14 and outlet room 15 and other functional areas. The lower two sides of the measuring chamber 13 are provided with intelligent distribution and transformer guide rails 13-1. The intelligent distribution and transformer guide rails 13-1 are fixedly arranged on the partitions 11 on both sides of the measuring chamber 13. The bottom of the measuring chamber 13 is provided with an intelligent distribution and transformer base 13. -2; The upper part of the measuring room 13 is provided with a junction box and a user billing meter. The bottom of the compensation chamber 14 is provided with a frame-shaped compensation component base 14-1, and two guide plates 14-2 are respectively provided on both sides of the compensation component base 14-1 along the depth direction of the frame. The rear end of the guide plate 14-2 A flared opening is provided for assisting the compensating assembly 31 to be pushed into the compensating assembly base 14-1. The cabinet 1 is provided with an air inlet at the bottom of the compensation chamber 14, and an air outlet duct 14-3 is arranged on the upper side of the compensation chamber 14. The air outlet duct 14-3 consists of shutters, steel mesh, waterproof box and water blocking It is composed of panels, which are used to prevent the entry of rainwater when in use.

The intelligent distribution transformer assembly 2 is mainly composed of a skeleton 21 , an instrument mounting plate 22 , an intelligent distribution transformer terminal 23 , a multi-function meter 24 , a miniature circuit breaker 25 , a temperature and humidity controller 26 and a through-wall terminal 27 .

Referring to FIG. 4 , the frame 21 is a cuboid structure surrounded by a plurality of uprights, the instrument mounting plate 22 is fixed on the frame 21 and is located at the front end of the frame 21 , the intelligent distribution transformer terminal 23 , the multi-function meter 24 , the miniature circuit breaker 25 and the temperature and humidity controller 26 are fixed on the instrument mounting plate 22 . There are more than three through-wall terminals 27. The through-wall terminals 27 are arranged on the upper part of the skeleton 21. The through-wall terminals 27 are used for the signal connection between the intelligent distribution transformer assembly 21 and the JP cabinet. The connected signals include voltage sampling signals, current mutual inductances Sampling signal, switch shunt tripping signal, circuit breaker auxiliary contact, travel switch signal, JP cabinet 485 communication signal and temperature and humidity control signal. The intelligent distribution and transformer assembly 2 has the function of GPRS remote control. The intelligent distribution and transformer assembly 2 adopts a drawer type matching structure with the intelligent distribution and transformer guide rails 13-1 and the intelligent distribution transformer base 13-2 on both sides of the lower end of the measuring chamber 13. When the intelligent distribution transformer assembly 2 is installed, it is first pushed into the measuring chamber 13. , and then fix it with screws. During maintenance, the components of the intelligent distribution transformer assembly 2 can be replaced or the entire intelligent distribution transformer assembly 2 can be replaced according to actual needs. Through the integral structure design of the intelligent distribution and transformer assembly 2 and the drawer type matching structure design between it and the metering chamber 13 of the cabinet 1 , the installation and removal of the intelligent distribution transformer assembly 2 are very convenient.

Referring to FIG. 5 and FIG. 6 , the compensation assembly 3 is mainly composed of a mounting frame 31 , a fan 32 , a capacitor switching module 33 and an SVG module 34 . The mounting frame 31 is mainly composed of a column 31-1, a bottom plate 31-2, an upper plate 31-3, a fan installation platform 31-4, an installation fixing plate 31-5 and a wind deflector 31-6; the bottom plate 31-2 and the upper plate 31-3 are arranged in parallel and are respectively fixedly connected with four uprights 31-1 by its four corners. The bottom plate 31-2 and the upper plate 31-3 are provided with ventilation holes in the part corresponding to the installation of the SVG module 34, and the bottom plate 31-2 is installed with a ventilation hole. A plurality of module guide rails for module guidance; the fan installation platform 31-4 is fixedly arranged on the upper plate 31-3, the installation fixing plate 31-5 is fixedly arranged under the rear end of the installation frame 31, and the installation fixing plate 31-5 is used for After the integral compensation component 3 is installed in the cabinet 1, it is fixed by screws; the fan 32 is fixed on the fan installation platform 31-4, and the fan 32 adopts a centrifugal fan, which is used to provide forced air cooling and heat dissipation for the SVG module 34. The air enters through the ventilation holes of the bottom plate 31-2, flows through the SVG module 34, and then reaches the outside of the cabinet from the air outlet duct 14-3 of the cabinet body 1. There are more than one capacitor switching module 33 and SVG module 34 (SVG is static var generator) respectively. Between the bottom plate 31-2 and the upper plate 31-3; when the number of SVG modules 34 is 1, if there is an empty installation space for the SVG module 34, the wind shield 31-6 needs to be used to install the empty SVG module 34 The ventilation holes on the bottom plate 31-2 are blocked so as not to affect the ventilation effect. The SVG module 34 and the capacitor switching module 33 have plug-in parts for connection to connect with the corresponding devices in the cabinet 1 in a plug-and-pull manner; the SVG module 34 takes the power semiconductor device IGBT as the core and adopts sinusoidal pulse width modulation SPWM control The IGBT is switched on and off to realize the continuous and fast reactive power compensation function, which can quickly and continuously adjust the reactive power of the power grid, suppress voltage fluctuations and flicker, make the power flow distribution of the entire power grid load more reasonable, improve the power grid quality, and ensure the stability of the power system. , high-efficiency and high-quality operation, so as to solve the three-phase unbalance, harmonics, reactive power and other problems of the power grid. The capacitor switching module 33 is controlled and operated by the SVG module 34 .

The compensation assembly 3 and the compensation chamber 14 adopt a drawer type matching structure. During installation, the compensation assembly 3 cooperates with the guide plate 14-2 of the compensation assembly base 14-1 of the compensation chamber 14 and is pushed into the compensation chamber 14. The mounting and fixing plate 31-5 on the mounting frame 31 is fixed with screws, and the assembly with the device is completed by connecting the primary cable and inserting the secondary connector. Because the JP cabinet is generally installed on the column when it is used, it has a certain height from the ground. Due to the particularity of the terrain and location of the site, it is often operated by manpower. During maintenance, if the entire compensation assembly 3 needs to be replaced, in order to reduce the weight, the SVG module 319 and the capacitor switching module 33 can be unplugged first, and the rest of the compensation assembly 3 can be removed. Increased ease of disassembly. When replacing a device, generally replace the SVG module 34 and the capacitor switching module 33 with a high failure rate, directly pull out the failed module, and insert a new module to complete the repair. The operation is simple and no wiring is required. When it is necessary to remodel and expand or change the capacity of the device, the number of the SVG modules 34 and the capacitor switching modules 33 in the compensation assembly 3 can be directly changed to achieve the purpose, or the capacities of the SVG modules 34 and the capacitor switching modules 33 can be changed to achieve the purpose. The replacement is convenient and simple, and the speed is fast.

The above embodiment is an illustration of the specific embodiments of the present invention, rather than a limitation of the present invention. Those skilled in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the scope of patent protection of the present invention.

Claims (6)

1. A low-voltage active detachable JP cabinet, comprising a cabinet body, characterized in that it also includes a modularized intelligent distribution and transformer assembly and a compensation assembly, and a partition plate is arranged in the cabinet body, and the baffle plate separates the cabinet. The space inside the body is divided into a wire inlet room, a wire outlet room, a measurement room and a compensation room. The bottom of the compensation room is provided with an air inlet hole, the upper part of the compensation room is provided with an air outlet duct, and the upper part of the measurement room is provided with wiring box and user billing meter, the intelligent distribution and transformation components and the lower part of the metering room are detachably fixed in the metering room using a drawer-type matching structure; Compensate indoors. 2. The low-voltage active detachable JP cabinet according to claim 1, characterized in that: the lower two sides of the measuring chamber are provided with intelligent distribution transformer guide rails, and the intelligent distribution transformer guide rails are fixedly arranged on the partitions on both sides of the measuring chamber. On the board, the bottom of the metering chamber is provided with an intelligent distribution and transformer base; the bottom of the compensation chamber is provided with a frame-shaped compensation component base, and each side of the compensation component base is provided with a guide plate along the depth direction of the frame. The end is provided with a flared opening for assisting the compensating component to be pushed into the compensating component base; the intelligent distribution transformer assembly cooperates with the intelligent distribution transformer guide rail and the intelligent distribution transformer base to form a drawer-type matching structure; the compensation assembly It cooperates with the base of the compensation component and the guide plate to form a drawer-type matching structure. 3. The low-voltage active detachable JP cabinet according to claim 1, characterized in that: the intelligent distribution transformer assembly comprises a skeleton, an instrument mounting plate, an intelligent distribution transformer terminal, a multi-function meter, a miniature circuit breaker, a temperature and humidity The controller and the through-wall terminal; the skeleton is a cuboid structure surrounded by a plurality of columns, the instrument mounting plate is fixed on the front end of the skeleton, the intelligent distribution transformer terminal, the multi-function meter, the miniature circuit breaker and the temperature and humidity controller It is fixed on the instrument installation board; there are more than 3 through-wall terminals, and the through-wall terminals are arranged on the upper part of the frame. 4. The low-voltage active detachable JP cabinet according to claim 1, wherein the compensation component comprises a mounting frame, a fan, a capacitor switching module and an SVG module; the mounting frame comprises a column, a bottom plate, an upper plate, fan installation platform, and installation fixing plate; the bottom plate and the upper plate are arranged in parallel and are fixedly connected with four uprights by their four corners respectively. Module guide rail for module guidance; the fan installation platform is fixed on the upper plate, and the installation fixing plate is fixed under the rear end of the installation frame; the fan is fixed on the fan installation platform; the capacitor switching module and the SVG module are respectively provided with 1 More than one, the capacitor switching module and the SVG module are fixedly installed between the bottom plate and the upper plate after being matched with the module guide rails on the bottom plate in a pull-out type. 5 . The low-voltage active detachable JP cabinet according to claim 4 , wherein the SVG module and the capacitor switching module are respectively provided with plug-in components, which are connected with the corresponding components in the cabinet in a plug-and-pull manner, so the The SVG module is a module that uses sinusoidal pulse width modulation SPWM to control the on-off of the IGBT so as to realize the function of continuous and fast reactive power compensation, and the capacitor switching module is controlled and operated by the SVG module. 6. The low-voltage active detachable JP cabinet according to any one of claims 1 to 5, wherein the air outlet air duct of the compensation chamber is composed of shutters, steel meshes, waterproof boxes and water baffles.

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