CN204760796U - Comprehensive distribution box - Google Patents

Abstract

The utility model provides a comprehensive power distribution box, which includes a box body, an isolating switch, an intelligent power distribution terminal, an intelligent electric meter, a busbar copper bar, a voltage transformer, a current transformer, an electric meter, an intelligent capacitor, a transfer switch, and a reactive power compensation control device, knife fuse switch, molded case circuit breaker and leakage protection circuit breaker, the intelligent power distribution terminal is installed in the box, and the intelligent power distribution terminal is connected to the current transformer and the voltage transformer respectively through the junction box. The transformer is installed on the copper bar of the bus bar, and a disconnector is installed at the inlet of the copper bar of the bus bar. The isolating switch is connected with the fuse switch through the copper bar of the bus bar. The output box is connected with the intelligent capacitor through the molded case circuit breaker. It is suitable for the control cabinet of electric energy distribution, metering, protection and automatic reactive power compensation of 0.4kV voltage level, and realizes the automatic control and transformation of low-voltage distribution network.

Description

A comprehensive distribution box

technical field

The utility model belongs to a device for distribution network transformation, which mainly relates to a comprehensive distribution box for electric energy distribution, measurement, protection and automatic compensation of reactive power at a voltage level of 0.4kV to realize automatic control of a low-voltage distribution network with a makeover.

Background technique

One of the measures for the transformation of distribution network is to adopt low-voltage distribution reactive power compensation comprehensive control technology, which is used in distribution systems with AC 50Hz and rated voltage of 380V, such as urban network, rural network transformation, industrial and mining enterprises, street lighting, residential quarters, etc. , a new type of outdoor comprehensive distribution box (JP cabinet) with multiple functions such as power distribution, control, protection, and power metering, and also has a leakage protection function.

Utility model content

In order to solve the above-mentioned defects and deficiencies in the prior art, the utility model provides a comprehensive distribution box, which is suitable for the control cabinet of electric energy distribution, measurement, protection and automatic compensation of reactive power at a voltage level of 0.4kV, and realizes low-voltage Automatic control and transformation of distribution network.

In order to solve the above technical problems, the utility model provides an integrated power distribution box, including a box body, an isolating switch, an intelligent power distribution terminal, an intelligent electric meter, a busbar copper bar, a voltage transformer, a current transformer, an electric meter, an intelligent capacitor, a switching switch, reactive power compensation controller, knife fuse switch, molded case circuit breaker, and leakage protection circuit breaker, and an intelligent power distribution terminal is installed in the box, and the intelligent power distribution terminal is respectively connected to the current transformer and the voltage transformer through a junction box The current transformer is installed on the copper bar of the bus bar. An isolating switch is installed at the incoming line of the copper bar of the bus bar. The isolating switch is connected with the fuse switch through the copper bar of the bus bar. The power is output from the box by the leakage protection circuit breaker, and the copper bus bar is connected to the intelligent capacitor through the molded case circuit breaker.

Preferably, the inner part of the box is divided into three assembly rooms, the left side is an assembly room for intelligent power distribution terminals, junction boxes, a knife fuse switch, and leakage protection circuit breaker; the middle is an isolating switch, bus bar and voltage and current mutual inductance On the right side is the assembly room for smart capacitors, ammeters, molded case circuit breakers, and transfer switches.

Preferably, the box body is provided with doors at the front and back, and a wire inlet hole at the bottom.

Preferably, lighting fixtures are provided on the top of the box.

Preferably, the top of the box is provided with a sun-proof and heat-insulating layer.

Preferably, the top of the box is provided with a rainproof layer.

Preferably, a hoisting frame is provided outside the box.

Beneficial technical effects achieved by the utility model: the utility model is suitable for the control cabinet of electric energy distribution, measurement, protection and reactive power automatic compensation of 0.4kV voltage level, and realizes the automatic control and transformation of the low-voltage distribution network.

Description of drawings

Fig. 1 is a schematic diagram of the front view of the components of the utility model and the connection relationship of each component;

Figure 2 is a rear view schematic diagram of the components of the utility model and the connection relationship of each component;

Figure 3 is a schematic diagram of the front view of the cabinet of the utility model;

Figure 4 is a schematic diagram of the right side view of the cabinet of the utility model;

Fig. 5 is a schematic diagram of the rear view of the cabinet of the utility model.

Detailed ways

In order to better understand the technical features, technical content and technical effects of the utility model, the accompanying drawings of the utility model are now described in more detail in conjunction with the embodiments.

Below in conjunction with accompanying drawing and embodiment the utility model patent is further described.

As shown in Figures 1-4, the utility model provides a comprehensive distribution box, including a box body 1, an isolating switch 3, an intelligent power distribution terminal 4, an intelligent meter 5, a busbar copper bar 6, a voltage transformer 7, a current mutual inductance 8, electric meter 9, smart capacitor 10, changeover switch 11, knife fuse switch 13, leakage protection circuit breaker 14, molded case circuit breaker 15 and reactive power compensation controller 16. The intelligent power distribution terminal 4 is installed in the box 1 , the intelligent power distribution terminal 4 is respectively connected to the current transformer 8 and the voltage transformer 7 through the junction box, the current transformer 8 is installed on the busbar copper bar 6, and the incoming line of the busbar copper bar 6 is installed with The isolating switch 3, the isolating switch 3 is connected to the knife fuse switch 13 through the busbar copper bar 6, the power introduced by the knife fuse switch 13 is output to the box body 1 by the leakage protection circuit breaker 14, and the busbar copper bar 6 is passed through the plastic case The circuit breaker 15 is connected to the smart capacitor 10 . The molded case circuit breaker 15 is a plastic case.

The inside of the box body 1 is divided into three assembly rooms, the left side is the assembly room of the intelligent power distribution terminal 4, the junction box, a knife fuse switch 13, and the leakage protection circuit breaker 14; the middle is the isolation switch 3 and the bus bar 6 And the assembly room of voltage transformer 7, current transformer 8, two other knife fuse switches 13, and earth leakage protection circuit breaker 14; the right side is the assembly room of smart capacitor 10, ammeter 9, molded case circuit breaker 15, and transfer switch 11 .

The box body 1 is provided with doors at the front and back, and a wire inlet hole at the bottom. The top of the box body is provided with a lighting fixture 12, a sun-proof and heat-insulating layer, and a rain-proof layer. A hoisting frame 2 is arranged outside the box.

The working principle of the utility model: the comprehensive distribution box has the functions of electric energy distribution, measurement, protection and automatic compensation of reactive power. Among them, RS485 communication is used between the intelligent power distribution terminal and the leakage protection circuit breaker, the reactive power compensation controller and the intelligent capacitor. The smart power distribution terminal can collect real-time voltage and current data and upload them to the upstream control system. The data is transmitted between the smart power distribution terminal and the smart meter, and the smart meter can collect statistics on the power consumption of the load to realize the function of energy metering. At the same time, it can also control the downstream leakage protection device to switch and switch the load; the leakage protection circuit breaker can realize the protection function of the load and the control cabinet, and the switching of the load can realize the function of power distribution; the reactive power compensation controller can Use the issued switching control command to control the switching of each smart capacitor in the downlink, and the smart capacitor can also feed back the state parameters of the capacitor. Through the switching control of the smart capacitor, the automatic compensation function for the reactive power in the loop is realized. .

The utility model has been disclosed above with preferred embodiments, but it is not intended to limit the utility model, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation schemes all fall within the protection scope of the utility model.

Claims (7)

1. A comprehensive distribution box, characterized in that it includes a box body, a disconnector, an intelligent power distribution terminal, an intelligent meter, a bus bar, a voltage transformer, a current transformer, an electric meter, an intelligent capacitor, a transfer switch, and a reactive power distribution box. Compensation controller, knife fuse switch, molded case circuit breaker and leakage protection circuit breaker, intelligent power distribution terminal is installed in the box, and the intelligent power distribution terminal is connected to the current transformer and voltage transformer respectively through the junction box. The current transformer is installed on the busbar copper bar, and an isolating switch is installed at the incoming line of the busbar copper bar. The isolating switch is connected with the knife fuse switch through the busbar copper bar, and the power introduced by the knife fuse switch is protected by leakage current. The circuit breaker outputs the box body, and the busbar copper bar is connected with the smart capacitor through the molded case circuit breaker. 2. The integrated power distribution box according to claim 1, characterized in that: the inner part of the box is divided into three assembly rooms, and the left side is an intelligent power distribution terminal, a junction box, a knife fuse switch, and a leakage protection circuit breaker. Assembly room; in the middle is the assembly room for isolating switches, bus bars, voltage and current transformers, two other knife fuse switches, and leakage protection circuit breakers; on the right is the assembly room for smart capacitors, ammeters, molded case circuit breakers, and transfer switches . 3. The integrated distribution box according to claim 1, characterized in that: the box body is provided with doors at the front and back, and a wire inlet hole at the bottom. 4. The integrated distribution box according to claim 1, characterized in that: the top of the box body is provided with lighting fixtures. 5. The integrated distribution box according to claim 1, characterized in that: the top of the box is provided with a sun-proof and heat-insulating layer. 6. The integrated distribution box according to claim 1, characterized in that: the top of the box body is provided with a rainproof layer. 7. The integrated distribution box according to any one of claims 1-6, wherein a hoisting frame is provided outside the box.