CN223039457U

CN223039457U - An integrated multifunctional low-voltage switch cabinet

Info

Publication number: CN223039457U
Application number: CN202421774925.7U
Authority: CN
Inventors: 牟莉芳; 龙军
Original assignee: HUANGGANG LILIAN ELECTRONICS CO LTD
Current assignee: HUANGGANG LILIAN ELECTRONICS CO LTD
Priority date: 2024-07-25
Filing date: 2024-07-25
Publication date: 2025-06-27
Anticipated expiration: 2034-07-25

Abstract

The utility model relates to an integrated multifunctional low-voltage switch cabinet, which includes an incoming line room, a metering room, a capacitor compensation room, and an outgoing line room; the incoming line room is equipped with a three-phase copper busbar connected to an intelligent frame circuit breaker; the metering room is equipped with an electric energy meter and a load control terminal, and the load control terminal is connected to the intelligent frame circuit breaker; the capacitor compensation room is equipped with a compensation controller, a compensation knife switch, a compensation AC contactor, and a capacitor; the incoming line end of the compensation knife switch is connected to the intelligent frame circuit breaker; the outgoing line room is equipped with a three-phase copper busbar connected to a molded case circuit breaker; the outgoing line end of the intelligent frame circuit breaker is connected to the molded case circuit breaker through a three-phase copper busbar; the three-phase copper busbar connects the incoming cable, the intelligent frame circuit breaker, the molded case circuit breaker, and the outgoing cable to form a main circuit. The integrated switch cabinet integrates comprehensive power distribution and load control metering, automatically alarms to cut off power supply and temperature control heat dissipation, is flameproof and explosion-proof, and is safe, with greatly reduced floor space and space, and the integrated switch cabinet is easy to install and use.

Description

Integrated multifunctional low-voltage switch cabinet

Technical Field

The utility model belongs to the field of low-voltage power distribution, and particularly relates to an integrated multifunctional low-voltage switch cabinet.

Background

For special transformer users with the potential capacity of 100kVA-315kVA, the low-voltage side electric equipment needs to be provided with a switch cabinet with four functions, namely a negative control metering cabinet (high-voltage supply low meter), a low-voltage wire inlet cabinet, a low-voltage capacitor cabinet and a low-voltage wire outlet cabinet, the existing switch cabinet is high in cost, floor space is large, a power distribution room is also required to be built, and resource waste is caused, and the floor space is at least 5-6m < 2 >. Meanwhile, the low-voltage power distribution cabinet configured on the low-voltage side of a user has potential safety hazards, and has some problems of faults such as electric leakage, overcurrent and short circuit, particularly the safety problems such as combustion and the like when the electric appliance element is heated during long-term running under high-temperature weather.

Therefore, for a large number of special transformer users, the problems of simplifying low-voltage side power consumption power distribution cabinet equipment are solved, the occupied area and the volume of the power distribution cabinet are reduced, the cost is reduced, the use performance and the safety of low-voltage side power consumption equipment are improved, the remote control function of a main loop of a negative control terminal is mainly considered, the automatic power supply cutting-off and temperature control heat dissipation functions of fire protection alarms are urgent problems to be solved, and the intelligent power distribution cabinet is convenient to popularize and use widely.

Disclosure of Invention

The utility model aims to solve the problems that the floor installation of the functional cabinet configured by the low-voltage side electric equipment of the existing special transformer user is large in occupied area, large in size, occupied space, resource-wasting, high in cost and high in expense, and safety problems such as fuse faults and phase failure are easy to occur. The integrated multifunctional low-voltage switch cabinet integrates comprehensive power distribution and negative control metering of a special transformer user, automatically alarms, cuts off power supply and heat dissipation of temperature control, greatly reduces occupied area and space, reduces cost, and is convenient to install and operate.

In order to solve the technical problems, the utility model adopts the technical scheme that the integrated multifunctional low-voltage switch cabinet mainly comprises an incoming line chamber, a metering chamber, a capacitance compensation chamber and an outgoing line chamber;

The inlet wire chamber is provided with a three-phase copper bar access intelligent frame breaker;

The metering chamber is provided with an electric energy meter and a negative control terminal, and is additionally provided with a seal, and the negative control terminal is connected with an intelligent frame breaker;

The compensating switch incoming line end is connected with the intelligent frame breaker, the compensating switch outgoing line end is connected with the compensating alternating current contactor through a three-phase copper bar, the compensating capacitor is connected with the compensating alternating current contactor, and the compensating alternating current contactor is connected with the compensating controller;

the intelligent frame circuit breaker is characterized in that the outlet chamber is provided with a three-phase copper bar access molded case circuit breaker, and the outlet end of the intelligent frame circuit breaker is accessed to the molded case circuit breaker through the three-phase copper bar;

The three-phase copper bar of the incoming line chamber is connected into an incoming line cable, the three-phase copper bar of the outgoing line chamber is connected into an outgoing line cable, the other end of the three-phase copper bar is lapped at the lower end of the molded case circuit breaker, and the three-phase copper bar connects the incoming line cable, the intelligent frame circuit breaker, the molded case circuit breaker and the outgoing line cable to form a main loop.

Preferably, the intelligent frame circuit breaker is provided with a button and an indicator lamp, and the molded case circuit breaker is provided with the indicator lamp.

The utility model has the advantages and positive effects that:

1. The remote control system comprises a metering room unit, a load control terminal, a remote control and remote signaling device, wherein the load control terminal is used for measuring and transmitting the electricity consumption of a meter to be measured and obtained, remote measurement is realized, the load control terminal is connected with a tripping coil and an auxiliary contact of an intelligent frame breaker of the incoming line unit, remote control and remote signaling are realized, and the load control terminal is used for remotely transmitting collected data of the meter and the state quantity of the intelligent frame breaker to a monitoring platform of an electric company through a wireless network so as to realize remote meter reading and remote control of electricity consumption load of a user.

2. The incoming line room unit monitors and protects the outgoing line electric equipment of the user in real time through the intelligent frame circuit breaker, provides overcurrent, short circuit, overvoltage and undervoltage protection functions and the like, provides real-time protection for the electric equipment at the tail end of the user, and provides real-time current data to facilitate the user to check the power load.

2. And the wire outlet chamber unit reasonably distributes the power load current of the electric equipment of each wire outlet loop of the user by the plastic shell circuit breaker, the indicator lamp feeds back the opening and closing operation state of the plastic shell circuit breaker of each branch wire outlet loop, and provides the functions of leakage, overcurrent and short circuit protection for the branch, and the wire outlet chamber unit has the functions of automatically cutting off the power supply for fire protection alarm and avoiding equipment damage.

3. The capacitance compensation unit, the compensation controller automatically sends out on-off control signals according to the magnitude of the load current of the user and the change of the power factor, the AC contactor is controlled to be disconnected and attracted, the compensation capacitor sends out capacitive current, which is used for balancing the inductive current of the user on the power utilization side, so as to compensate and improve the power factor to meet the requirement, and the capacitance compensation function is controlled to be put into and out of operation by the capacitance compensation room knife switch. Meanwhile, the temperature controller is provided with an alarm temperature and a forced heat dissipation temperature on the compensation capacitor.

4. The utility model relates to an integrated multifunctional low-voltage switch cabinet, which adopts a power distribution cabinet integrating an incoming line chamber, a metering chamber, a capacitance compensation chamber and an outgoing line chamber, wherein an incoming line cable, an intelligent frame circuit breaker, a plastic shell circuit breaker and an outgoing line cable are connected to form a main loop, so that inductive current on the electricity utilization side of a user is balanced, the power factor is compensated and improved to meet the requirement, the overload and short circuit are protected, the integrated multifunctional low-voltage switch cabinet has the function of automatically cutting off a power supply in a fire-fighting alarm mode, and meanwhile, the capacitance compensation chamber performs the functions of monitoring the capacitance temperature and automatically radiating the heat, performs overvoltage protection, avoids equipment damage and is safe to use, thereby replacing the existing combined power distribution cabinet, reducing the cost, having small occupied area, effectively controlling the fault range of the combined power distribution cabinet, being convenient to install, being convenient to use and operate, and being convenient for widely popularizing a large number of users.

Drawings

Fig. 1 is a schematic diagram of a side view of a structural circuit of an integrated multifunctional low-voltage switchgear.

The device comprises a 1-incoming line chamber, a 2-electric energy meter, a 3-negative control terminal, a 4-metering chamber, a 5-intelligent frame circuit breaker, a 6-plastic shell circuit breaker, a 7-outgoing line chamber, an 8-compensation capacitor, a 9-compensation alternating current contactor, a 10-capacitance compensation chamber, an 11-compensation knife switch, a 12-compensation controller and 13-three-phase copper bars.

Detailed Description

The present utility model will be described in further detail with reference to specific examples.

As shown in fig. 1, the integrated multifunctional low-voltage switch cabinet consists of four chambers, namely an incoming line chamber 1, a metering chamber 4, a capacitance compensation chamber 10 and an outgoing line chamber 7, wherein the incoming line chamber 1, the metering chamber 4 and the outgoing line chamber 7 are arranged at the front half part of the cabinet body, and the capacitance compensation chamber 10 is arranged at the rear half part of the cabinet body, so that the occupied area is smaller than 1-2m2.

The metering chamber 4 is provided with an electric energy meter 2, a negative control terminal 3 and a seal, and an observation window is arranged on a cabinet body at one side of the metering chamber 4. The electric energy meter 2 of the metering chamber 4 displays the real-time load electric quantity of a user, and the negative control terminal 3 reads the electric energy consumption of the electric energy meter 2 through transmission, so that remote telemetry is realized.

The intelligent frame circuit breaker 5 is connected to the three-phase copper bar 13 installed in the wire inlet chamber 1, the intelligent frame circuit breaker 5 is connected to the negative control terminal 3, the intelligent frame circuit breaker 5 monitors load current and load voltage of a user in real time, provides protection functions of overcurrent, short circuit, overvoltage and undervoltage and the like, provides real-time protection for electric equipment at the tail end of the user, and a wire inlet instrument button indicator lamp is installed on a cabinet body of the wire inlet chamber 1 and controls the intelligent frame circuit breaker 5 to be disconnected and closed through a button so as to feed back the current disconnection and closing operation state of the intelligent frame circuit breaker 5.

The control module of the negative control terminal 3 realizes remote control and remote signaling through the tripping coil and auxiliary contacts of the intelligent frame breaker 5 connected into the incoming line room 1. The negative control terminal 3 collects, receives and transmits data, and the negative control terminal 3 remotely transmits the collected data of the electric energy meter 2 and the state quantity of the intelligent frame breaker 5 to a monitoring platform of an electric company through a wireless network so as to realize remote meter reading and remote control of the electric load of a user.

The outlet chamber 7 is used for connecting the outlet end of the intelligent frame circuit breaker 5 into the molded case circuit breaker 6 through the three-phase copper bar 13, the molded case circuit breaker 6 reasonably distributes the power load of the electric equipment of each outlet circuit loop of the user, provides overcurrent and short-circuit protection for the branch, and is provided with an outlet instrument indicator lamp on the cabinet body of the outlet chamber 7 to feed back the opening and closing operation state of the molded case circuit breaker 6 of each branch outlet circuit loop.

The capacitance compensation chamber 10 is provided with a compensation knife switch 11, a compensation controller 12, a plurality of compensation alternating current contactors 9 and a plurality of compensation capacitors 8 through a three-phase copper bar 13. The incoming line end of the compensation knife switch 11 is connected into the intelligent frame breaker 5 through the three-phase copper bar 13, the compensation knife switch 11 is a main switch for inputting and outputting the capacitance compensation function, the outgoing line end of the compensation knife switch 11 is connected into a plurality of compensation alternating current contactors 9 through the three-phase copper bar 13, the main contact of the compensation alternating current contactors 9 is connected into the compensation capacitor 8, the compensation capacitor 8 sends out capacitive current to balance the inductive current on the electricity utilization side of a user, the auxiliary head contact of the compensation alternating current contactors 9 is connected into and controlled by the compensation controller 12 to be disconnected and sucked, and the compensation controller 12 is arranged on a cabinet body on one side of the capacitance compensation chamber 10.

When the integrated power distribution cabinet works, an incoming cable of the incoming chamber 1 is connected to the three-phase copper bar 13, the three-phase copper bar 13 of the outgoing chamber 7 is connected to the outgoing cable, the other end of the three-phase copper bar 13 is lapped on the outgoing terminal of the molded case circuit breaker 6, and the three-phase copper bar 13 connects the incoming cable, the intelligent frame circuit breaker 5, the molded case circuit breaker 6 and the outgoing cable to form a loop.

The user incoming line end of the metering room 4 is connected with a load, the electric energy meter 2 displays the load current and the electricity consumption of the user, the electric power company charges the electricity consumption of the electric energy meter 2 through 485 transmission, the measuring module of the negative control terminal 3 realizes remote telemetering acquisition, receiving and sending data, the control module of the negative control terminal 3 of the incoming line room 1 is connected with the tripping coil and the auxiliary contact of the intelligent frame breaker 5 of the incoming line unit to realize remote control and remote signaling, and the negative control terminal 3 remotely transmits the acquired data of the electric energy meter 2 and the state quantity of the intelligent frame breaker 5 to the monitoring platform of the electric power company through a 4G wireless network to realize remote meter reading and remote control of the electricity consumption load of the user. The intelligent frame breaker 5 monitors the load current and voltage of the user in real time, provides protection functions of overcurrent, short circuit, overvoltage and undervoltage and the like, the buttons and the indicator lamps control and feed back the current breaking and closing states of the intelligent frame breaker 5, the capacitance compensation chamber 10 collects user current and voltage data, calculates user electricity consumption time data, automatically sends out a breaking and closing control signal, controls the compensation alternating current contactor 9 to break and draw in, balances the current of the user electricity consumption side, and inputs the compensation capacitor when the power factor does not reach the requirements of an electric company so as to improve the power factor to meet the requirements of the electric company. The outgoing line chamber 7 reasonably distributes the load of user electric equipment and protects the user electric equipment from being damaged.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by this patent.

Claims

1. The integrated multifunctional low-voltage switch cabinet is characterized by comprising an incoming line chamber, a metering chamber, a capacitance compensation chamber and an outgoing line chamber;

2. The integrated multifunctional low-voltage switch cabinet of claim 1, wherein the intelligent frame circuit breaker is provided with a button and an indicator lamp, and the molded case circuit breaker is provided with the indicator lamp.