CN115494285A - Electric device - Google Patents

Abstract

The invention discloses an electric device, which comprises a three-phase line power terminal, an insulating shell, an electronic controller, and a current collector. The current collector is arranged in the three-phase line power terminal, and the insulating shell is provided with an electronic controller. The three-phase line power terminal is directly or indirectly arranged outside the upper end of the insulating shell, and the insulating shell and the three-phase line power terminal directly or indirectly form a space. and the cross-sectional area is smaller than that of the incoming wire end, and the outgoing wire end of the three-phase line power terminal extends toward the direction of the space. The power distribution device of the present invention can detect the current of each branch, and can realize the monitoring of the total current quantity by summarizing and calculating the current of different branches.

Description

an electrical device

technical field

The invention relates to the field of low-voltage power distribution, in particular to an electrical device with protection and control functions.

Background technique

At present, the State Grid has invested a lot in the field of power grids to realize the automatic construction and monitoring of urban distribution networks, making power transmission, time-sharing flow and power distribution more reasonable, and realizing the overall supervision of big data. However, the meter boxes in a large number of communities in China are not intelligent, and do not have any monitoring and security protection functions.

1. With the vigorous development of the country, more attention is paid to environmental issues and energy consumption. In order to respond to the national carbon neutral development goal, the control and supervision of electric energy is inevitable.

2. The circuit structure of the old community is complicated, and the lines are seriously aging. It has become a hard-hit area for fire safety. There are two options for upgrading. , the risk of upgrading to a smart switch is greater; the second is to add an additional intelligent monitoring system outside the switch, which can monitor the power consumption and timeliness of power consumption in the community in real time, and does not require major changes to the switch.

Now there is a situation of one input and multiple outputs in the form of electric energy meter branch wiring, which is not only compact in space, but also requires high intelligent transformation, especially for the discovery and reporting of inaccurate measurement of electric energy meters. And how to quickly and accurately identify the corresponding relationship between branch metering and corresponding electric energy meters during installation and configuration has become a prominent and urgent problem to be solved.

Contents of the invention

Based on the above background, in order to solve at least one of the above problems, the present invention provides an electrical device, which can realize the rapid upgrading of the old community, and can also be applied in the new power distribution system to realize real-time monitoring of the electricity consumption of the community and the power consumption. Electric aging, to overcome the above problems.

The present invention is realized through the following technical solutions: an electric device, including a three-phase line power supply terminal, an insulating casing, an electronic controller, and a current collector, the current collector is arranged in the three-phase line power supply terminal, The electronic controller is arranged in the insulating shell, and the three-phase line power terminal is directly or indirectly arranged outside the upper end of the insulating shell, and the insulating shell is directly or indirectly connected to the three-phase line power terminal. Indirectly form a space, the quantity of the outlet terminals of the three-phase line power supply terminal is more than the quantity of the input terminal and the cross-sectional area of each outlet terminal is smaller than that of the input terminal, and the outlet terminals of the three-phase line power supply terminal extend to The direction in which the space is located.

Preferably, at least six miniature circuit breakers are arranged in the space.

Preferably, the outlet terminal of the three-phase line power terminal is connected to the inlet terminal of the miniature circuit breaker.

Preferably, the electrical device further includes a PE or/and N wire terminal.

Preferably, the PE or/and N line terminals are integrally or separately arranged around the insulating shell or the three-phase line power terminal or between the three-phase line power terminal and the insulating shell.

Preferably, the PE or/and N wire terminal is arranged on one side of the electronic controller.

Preferably, the electronic controller includes an insulating casing, an insulating panel and an electronic circuit board, and the electronic controller is arranged in a pluggable manner in the insulating casing or fixedly connected with the insulating casing.

Preferably, the electronic circuit board is arranged between the insulating casing and the insulating panel.

Preferably, a communication module is arranged on the surface or inside of the insulating panel, the communication module is pluggably arranged on the surface of the insulating panel or fixedly arranged on the surface or inside of the insulating panel, and the communication module is arranged There is a communication interface.

Preferably, the communication module is one or more combined communication modules of carrier communication, RS485 communication, Bluetooth communication, and infrared communication.

Preferably, the electronic circuit board includes at least a power module or/and a signal processing channel.

Preferably, the electronic circuit board further includes a measurement module or/and a control module.

Preferably, the phase spacing of the three-phase line power terminals is proportional to the number of miniature circuit breakers.

Preferably, the number of the current collectors is greater than or equal to the number of the miniature circuit breakers.

Preferably, a second electronic circuit board is provided inside the three-phase line power terminal, and the second electronic circuit board includes a current analog signal circuit and a voltage acquisition circuit.

Preferably, the outlet end of the three-phase line power terminal is in the shape of a crimping wire, a needle or a sheet.

Preferably, the outlet end of the three-phase line power terminal is a movable structure.

Preferably, the outgoing end of the three-phase line power terminal and the incoming end of the three-phase line power terminal are connected by a hard conductor or a flexible conductor.

Preferably, the central axis of the current collector is perpendicular to the plane of the conductive connection plate of the three-phase line power terminal.

Preferably, an N wire for communication is also included, and the N wire for communication is introduced from the outside or connected to the N pole terminal.

Preferably, the incoming terminal of the PE or/and N wire terminal is a screw compression type, and the outgoing wire terminal is a pull compression type.

Preferably, the wire-in end of the three-phase line power terminal is used to connect the power wire, and the wire-in end of the three-phase line power terminal is screw-type.

Preferably, the bottom of the insulating case is provided with a snap-in guide rail device and can be mounted on the same guide rail as the miniature circuit breaker.

The beneficial effects of the present invention are as follows:

1. Carry out inaccuracy monitoring and alarm on the existing electric energy meter;

2. Carry out intelligent innovation on the original non-electronic three-phase line power terminal, and replace it directly and seamlessly on site;

3. It can identify the user's load, send the data to the main station for edge analysis and provide basic data for power flow control to avoid large-scale power outages;

4. The electrical device has the function of branch current branch collection. Through the summary algorithm of the electric quantity, through the structure partition setting or configuration change, not only the current of each branch can be detected, but also the current of different branches can be used. Summarize and calculate the quantity of the total current to be monitored, saving the need to set up phase current collectors;

5. The electronic controller of the electrical device can be disassembled and replaced separately with power on, without the need to power off the main circuit, to ensure the continuity of power supply, reduce maintenance equipment costs and labor costs, improve the reliability of monitoring functions and communication functions, and facilitate secondary upgrades renovation;

6. The electrical device has detachable PE or/and N wire terminals, which can be effectively installed by changing the installation position of PE or/and N wire terminals when the physical environment requirements change, which is very convenient for secondary use upgrade;

7. The electrical device can realize the detection of current, voltage, ground fault current, temperature, etc., and also has a measurement function, automatic physical topology supports measurement inaccuracy, and suspected electricity theft alarm, on-site fault research and judgment and active reporting , HPLC communication, wireless communication, RS485 communication, line loss analysis support and other functions.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the described examples are only functional A part of it is not used for display of all functions.

Fig. 1 is the perspective view of the electric device of the present invention;

Fig. 2 is a perspective view of the electrical device of the present invention (with the miniature circuit breaker removed);

Fig. 3 is the rear view of the electric device of the present invention;

Fig. 4 is the bottom view of the electric device of the present invention;

5 is a schematic diagram of the internal structure of the electronic circuit board of the present invention;

Fig. 6 is the structural representation of electronic controller of the present invention;

Fig. 7 and Fig. 8 are the schematic diagrams of the structure of the incoming line end and the outgoing line end of the three-phase line power terminal of the present invention;

Figure 9 is a schematic diagram of the installation of the electrical device of the present invention;

Fig. 10 is a perspective view of another structure of an electrical device of the present invention.

detailed description

Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configuration set forth below, but covers any modification, substitution and improvement of elements, components without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.

In the description of the present invention, it should be noted that, unless otherwise specified, the terms "first", "second" and similar descriptions are only used for description purposes, and should not be understood as indicating or implying relative importance.

It should be noted that the orientation or positional relationship indicated below is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific Orientation, construction and operation in a particular orientation, therefore should not be construed as limiting the invention.

As shown in Figures 1 to 4, this embodiment discloses an electrical device, which includes a three-phase line power terminal, an insulating casing 4, an electronic controller 5, a current collector 6, at least 6 small circuit breakers, PE Or/and the N line terminal 3, the electronic controller 5 is arranged in the insulating casing 4, the incoming line end of the three-phase line power supply terminal is the incoming line terminal 2, and the outgoing line end is the outgoing line terminal 8, so The quantity of the outgoing line terminals 8 is more than the quantity of the incoming line terminals 2 and the cross-sectional area of each outgoing line terminal 8 is smaller than that of the incoming line terminals 2, and the number of the outgoing line terminals 8 is N times of the quantity of the incoming line terminals 2, The N is an integer greater than or equal to 2. In this embodiment, the number of incoming terminals 2 is 3, the number of outgoing terminals 8 is 6, and one incoming terminal 2 and its corresponding two outgoing terminals Terminal 8 is connected by a conductor. The current collector 6 is arranged in the three-phase line power supply terminal, the current collector 6 is located between the incoming line terminal 2 and the outgoing line terminal 8, and between the incoming line terminal 2 and the outgoing line terminal 8 Conductive connection, the central axis of the current collector 6 is perpendicular to the plane of the conductive connection plate of the incoming line terminal 2, and the wire connecting the incoming line terminal 2 and the outgoing line terminal 8 passes through the middle of the current collector 6 Pass. The quantity of the current collector 6 is greater than or equal to the quantity of the miniature circuit breaker, the incoming terminal 2 is used to connect the power wire, the incoming terminal 2 is a screw compression type, and the outgoing terminal 8 is Pressed wire, needle or flake.

Please continue to refer to Figure 1 and Figure 4, the insulating shell 4 is an integral structure, the bottom of the insulating shell 4 is provided with a snap-in guide rail device, the snap-in guide rail device in this embodiment is a buckle 7, the The three-phase line power terminal is directly or indirectly arranged outside the upper end of the insulating shell 4, and the insulating shell 4 and the three-phase line power terminal directly or indirectly form a space 9, at least 6 sets of the A miniature circuit breaker is arranged in the space 9, the outlet terminal 8 extends toward the direction of the space 9, the incoming terminal of the miniature circuit breaker is connected to the outlet terminal 8, and the three-phase line power supply The phase spacing of the terminals is proportional to the number of miniature circuit breakers. The more the miniature circuit breakers are, the larger the phase spacing of the three-phase line power supply terminals is, that is, when the number of miniature circuit breakers increases , the number of corresponding outgoing terminals 8 will also increase, and at the same time, the number of outgoing terminals 8 corresponding to one incoming terminal 2 will also increase, and the terminal width and interphase spacing of one incoming terminal 2 will increase.

In this embodiment, the incoming wire end of the PE or/and N wire terminal 3 is a screw compression type, and the outgoing wire end is a pull-tightening type, and the incoming wire end and the outgoing wire end are located on the same busbar, which is extremely large. The waste of space is reduced, and a shell is provided on the upper part of the PE or/and N wire terminal, which is both protective and beautiful. The PE or/and N line terminal 3 is arranged on the side of the insulating shell 4 away from the three-phase line power terminal, and can be integrated with the insulating shell 4. In other embodiments, the PE or The / and N line terminal 3 can also be separately arranged from the insulating shell 4, and the PE or / and N line terminal 3 is detachably arranged in the middle of one side of the insulating shell, which is convenient for on-site installation and debugging. The PE or/and N wire terminal 3 and the insulating shell 4 can be arranged separately and connected by screw connection, adhesive bonding or clamping. Of course, the PE or/and N wire The connection terminal 3 can also be arranged on the upper or lower end of the insulating shell 4, or on the side of the three-phase line power supply connection terminal, and the PE or/and N line connection terminal 3 is connected to the three-phase line power supply The terminal can be installed integrally or separately. When separately installed, it is connected by screw connection, glue bonding or clamping. In the present invention, there is no restriction on the installation position of the PE or/and N wire terminal. It should be noted that if the PE or/and N line terminal is a PE terminal, then the electrical device is 3P; if the PE or/and N line terminal is an N line terminal, then the electrical device The device is 4P, and the PE connection terminal can be separately installed around the insulating casing 4, and the N line connection terminal needs to be connected to the first main board 5-2 through wires no matter where it is installed in the electrical device. together for data collection.

As shown in Fig. 5 and Fig. 6, the electronic controller 5 includes an insulating casing 5-7, an insulating panel 5-8 and an electronic circuit board 1, and the electronic controller 5 is pluggably arranged with the insulating casing. The insulating casing 4 is connected or fixed on the insulating casing, the electronic controller 5 can be arranged inside or outside the insulating casing 4, and the electronic circuit board 1 is arranged on the insulating casing 5- 7 and the insulating panel 5-8, the power module 5-5, the communication electronics 5-6, and the communication module 5-1 are plugged together on the first main board 5-2, and the measurement module 5-4 Inserted on the second main board 5-3, the first main board 5-2 and the second main board 5-3 are plugged and fixed together.

Further, the electronic circuit board 1 includes a power supply module 5-5, a communication module 5-1, a measurement module 5-4, a signal processing channel and a control module, wherein the power supply module 5-5 is provided with an auxiliary power supply interface 5-6K, the man-machine interaction module 5-9 is set on the insulating cover 5-7, the communication module 5-1 can be set on the surface or inside of the insulating panel 5-8, the communication module 5- 1 can be set to be pluggable, or fixedly set on the surface or inside of the insulating panel, the communication module 5-1 is provided with a communication interface 5-1K, the communication interface is RS485, LAN, CAN, For the Profibus interface, the insulating casing 5-7 is provided with an opening corresponding to the communication interface 5-1K, so as to facilitate connection with an external communication interface. The communication module in this embodiment may be one or more combined communication modules of carrier communication, RS485 communication, Bluetooth communication, and infrared communication.

The communication module 5-1 adopts wireless communication or wired communication, wireless communication includes at least one of communication methods such as 4G, 5G, WIFI, BLE, ZigBee, NB-IoT and LoRa, and wired communication includes HPLC, PLC, RS485 , LAN, CAN, and Profibus and other communication methods at least one.

The account number information of each electric energy meter connected to the outlet terminal 8 is stored in the electronic controller 5, and the account number information and the account number information of each electric energy meter connected to the outlet terminal 8 are stored in the electronic controller 5. The corresponding relationship of the electric quantity metering data obtained by the current collector 6. The communication module 5-1 transmits the corresponding relationship data to a superior device, such as a distribution transformer terminal, a fusion terminal, and a master station.

As shown in FIG. 7 , a second electronic circuit board 5-10 is arranged inside the three-phase line power terminal, and the second electronic circuit board 5-10 includes a current analog signal circuit and a voltage acquisition circuit. Wherein the current analog signal line is formed by plugging the current collector 6 on the second electronic circuit board 5-10, and the voltage acquisition circuit is formed by welding the voltage collector 5-11 on the second electronic circuit board 5-10 , the second electronic circuit board 5-10 is connected to the second main board 5-3 through wires, and transmits the shunt current and voltage signals collected by the current analog signal circuit to the second main board 5-3 for analysis and processing . Summarize the current information and monitor the total current quantity.

As shown in Figure 8, the current collector 6 is set on each branch, and the structure ensures the phase-splitting setting, which are respectively A1, A2..., B1, B2..., C1, C2..., phase-splitting setting The current collector 6 is respectively connected to the corresponding part of the measurement module 5-4, such as A1 measurement, A2 measurement..., B1 measurement, B2 measurement..., C1 measurement, C2 measurement Measure……. The measurement module 5-4 receives signals from each of the current collectors 6 and voltage collectors 5-11, respectively through A1 measurement, A2 measurement..., B1 measurement, B2 measurement..., C1 measurement , After C2 measurement, the electric quantity data such as current, voltage, power factor, electric quantity, frequency and harmonic wave can be obtained. It can also summarize and calculate the electrical quantity data such as current, voltage, power factor, energy quantity, frequency and harmonic of each phase, saving the setting of phase current collectors. Monitor the existing electric energy meters, such as overvoltage, low voltage, three-phase unbalance, etc., provide necessary analysis data for abnormal reminders, assist the quasi-station area to carry out the work of eliminating defects in time, improve the reliability of power supply, and improve the quality of power supply , improve user satisfaction.

The current signal output by the current collector 6 is transmitted to the measurement module 5-4, and after the measurement processing of the corresponding part in the measurement module 5-4, it is transmitted to the first main board 5-2, and further transmitted To the communication module 5-1, and further communicate to the superior, display current, summary current and current fault information on the human-machine exchange module 5-9 of the electrical device itself, and the electrical device can also Set the alarm, when receiving fault information, it can send out an alarm signal.

The current collector 6 in this embodiment is at least one of a current transformer, a shunt, a Hall current sensor, a fluxgate current sensor, a Rogowski coil, a magnetoresistive current sensor and an optical fiber current sensor.

As shown in Figure 9, the buckle 7 is located at the bottom of the insulating case 4, and the miniature circuit breaker is buckled and connected to the standard guide rail 11-1, and the buckle 7 can be mounted on the same rail as the miniature circuit breaker. Standard rail 11-1.

In another specific embodiment, as shown in FIG. 10 , the PE or/and N line terminals in this embodiment are arranged between the insulating shell 4 and the three-phase line power supply terminals, and the The PE or/and N line terminal, the insulating shell 4 and the three-phase line power supply terminal can be arranged integrally or separately, and are connected by screw connection, adhesive bonding or card connection in the case of separate arrangement.

Claims (23)

1. An electrical device, comprising a three-phase line power terminal, an insulating shell, an electronic controller, and a current collector, the current collector is arranged in the three-phase power terminal, and the electronic controller is set In the insulating case, the three-phase line power connection terminal is directly or indirectly arranged outside the upper end of the insulating case, and the insulating case and the three-phase line power connection terminal directly or indirectly form a space, The number of outgoing wire ends of the three-phase power supply terminal is more than the number of incoming wire ends, and the cross-sectional area of each outgoing wire end is smaller than that of the incoming wire end. It is characterized in that the outgoing wire ends of the three-phase line power supply terminal extend toward the direction of space. 2. The electrical device according to claim 1, characterized in that at least six miniature circuit breakers are arranged in the space. 3. The electrical device according to claim 2, characterized in that: the outlet terminal of the three-phase line power terminal is connected to the inlet terminal of the miniature circuit breaker. 4. The electrical device according to claim 1, characterized in that: the electrical device further comprises a PE or/and N wire terminal. 5. The electrical device according to claim 4, characterized in that: the PE or/and N line terminals are integrated or separated and arranged around the insulating shell or the three-phase line power supply terminals or in the Between the three-phase line power terminal and the insulating shell. 6. The electrical device according to claim 4, characterized in that: the PE or/and N line terminal is arranged on the side of the electronic controller. 7. The electrical device according to claim 1, characterized in that: the electronic controller comprises an insulating casing, an insulating panel and an electronic circuit board, and the electronic controller is pluggably arranged in the insulating casing or connected to the The insulating shell is fixedly connected. 8. The electrical device according to claim 7, wherein the electronic circuit board is disposed between the insulating casing and the insulating panel. 9. The electrical device according to claim 7, characterized in that: a communication module is arranged on the surface or inside of the insulating panel, and the communication module is pluggably arranged on the surface of the insulating panel or fixedly arranged on the insulating panel. The surface or inside of the insulating panel, and the communication module is provided with a communication interface. 10. The electrical device according to claim 9, wherein the communication module is one or more combined communication modules of carrier communication, RS485 communication, Bluetooth communication, and infrared communication. 11. The electrical device according to claim 8, wherein the electronic circuit board at least includes a power module or/and a signal processing channel. 12. The electrical device according to claim 11, wherein the electronic circuit board further comprises a measurement module or/and a control module. 13. The electrical device according to claim 2, characterized in that the phase spacing of the three-phase line power terminals is proportional to the number of miniature circuit breakers. 14. The electrical device according to claim 2, characterized in that the number of said current collectors is greater than or equal to the number of said miniature circuit breakers. 15. The electrical device according to claim 1, characterized in that: a second electronic circuit board is arranged inside the three-phase line power terminal, and the second electronic circuit board includes a current analog signal circuit and a voltage acquisition circuit . 16. The electrical device according to claim 1, characterized in that: the outlet end of the three-phase line power terminal is in the shape of a crimping wire, a needle or a sheet. 17. The electrical device according to claim 16, characterized in that: the outlet end of the three-phase line power terminal is a movable structure. 18. The electrical device according to claim 1, characterized in that: the outgoing end of the three-phase line power terminal and the incoming end of the three-phase line power terminal are connected by hard conductors or flexible conductors. 19. The electrical device according to claim 1, characterized in that: the central axis of the current collector is perpendicular to the plane of the conductive connection plate of the three-phase line power terminal. 20. The electrical device according to claim 1, further comprising a N line for communication, the N line for communication is introduced from the outside or connected to the N pole terminal. 21. The electrical device according to claim 4, characterized in that: the incoming wire end of the PE or/and N wire terminal is a screw compression type, and the outgoing wire end is a pull and compression type. 22. The electrical device according to claim 1, characterized in that: the incoming end of the three-phase line power supply terminal is used to connect the power wire, and the incoming line end of the three-phase line power supply terminal is a screw press tight type. 23. The electrical device according to claim 2, characterized in that: the bottom of the insulating housing is provided with a snap-in guide rail device and can be mounted on the same guide rail as the miniature circuit breaker.

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