WO2020129843A1

WO2020129843A1 - Distribution board

Info

Publication number: WO2020129843A1
Application number: PCT/JP2019/048932
Authority: WO
Inventors: 公義山本
Original assignee: 公義山本
Priority date: 2018-12-20
Filing date: 2019-12-13
Publication date: 2020-06-25
Also published as: JP7199216B2; JP2020102904A

Abstract

This distribution board is used in a communication (PLC) system using a power line PL used for supplying power from a commercial power supply. The distribution board is characterized by having a box 1, a main breaker 4 installed in the box 1, a plurality of branch breakers 5 disposed in the box 1 and connected to the secondary side of the main breaker 4, a plurality of first couplers 7 provided on the respective secondary side power lines of the plurality of branch breakers 5 and superimposing a PLC signal on a power signal and/or separating the PLC signal from the power signal, and a control unit 6 for superimposing the PLC signal, which is separated from the power signal by a predetermined first coupler from among the plurality of first couplers 7, on the power signal by another first coupler to control the PLC, wherein the control unit 6 is disposed in the box 1. This makes it possible to install, without requiring a new installation place, the control unit for performing communication control on the PLC signal transmitted by bypassing various types of breakers.

Description

Distribution board

The present invention relates to a distribution board, and more particularly to a distribution board used in a power line communication (PLC) system.

PLC is a technology for performing data communication by superimposing a carrier wave on a power line such as AC100V and AC200V drawn into each home. As shown in FIG. 5, a network is constructed by connecting a PLC modem 91 to an outlet 92 provided in each room in the home. When the plug provided in the PLC modem 91 is inserted into the outlet 92, power is supplied to the PLC modem 91, the PLC signal as a communication signal is superimposed on the power signal and sent out, and at the same time, the PLC signal superimposed on the power signal. Are received separately from the power signal.

The PLC signal superimposed on the power signal by the PLC modem 91 and output to the power line is received by the PLC modem 91 connected to another outlet 92 through the power line PL arranged in the home, or the power is supplied. A server 96 connected to the Internet through a public line 94 such as an existing optical fiber via a parent PLC modem (not shown) provided on the secondary side of an outdoor utility pole transformer through the meter WM and the lead-in line 93. Is transmitted to the database 97, the mobile terminal 98, or the like.

On the other hand, the communication signal sent from the public line 94 such as an optical fiber is superimposed on the power signal by a parent PLC modem (not shown) provided on the secondary side of the power pole transformer, and the communication line 93 and the power meter WM are fed. It is sent through the home through the PLC modem 91 connected to the outlet 92, and is taken out from the power line PL and received by a home electric appliance such as a personal computer. As a result, for example, it becomes possible to turn on and off home electric appliances at home from an SNS terminal such as a smartphone while away from home.

As described above, the PLC system uses the service line 93 already provided in a general household and the power line PL provided in the house as a communication line, and thus can provide a communication line with less burden on the consumer. There are advantages.

The electric power drawn into the home from the electric pole transformer by the lead-in line 93 is branched into a plurality of pieces in the distribution board D1 and supplied to the outlets 92 or various electric devices. From the viewpoint of checking the electric capacity and ensuring the safety of indoor wiring, the distribution board D1 is provided with a limiter 3, a master breaker 4, and a plurality of branch breakers 5, and the power line PL is connected to these breakers. There is. In some areas, the limiter 3 is not installed on the distribution board D1. Since the PLC signal is attenuated every time it passes through the main breaker 4 and the limiter 3, it may be necessary to arrange a relay device for amplifying the signal voltage on the distribution board or the like in the PLC system.

Therefore, in order to suppress the attenuation of the PLC signal, a technique of bypassing the master breaker 4 and the limiter 3 to exchange the PLC signal has been proposed (for example, Patent Documents 1 and 2).

JP, 2015-23505, A JP, 2010-62887, A

By the way, in the PLC system, it is necessary to install a control unit that controls communication of PLC signals. If the control unit is provided separately from the distribution board, the installation space will be required and the space cannot be saved.

Therefore, an object of the present invention is to enable a control unit for controlling communication of PLC signals bypassing various breakers to be installed without newly requesting an installation location.

According to the present invention, there is provided a distribution board for use in a communication (PLC) system using a power line used for power supply from a commercial power source, the box, a main breaker installed in the box, and the box. A plurality of branch breakers that are arranged and connected to the secondary side of the main breaker, and a secondary side power line of each of the plurality of branch breakers are provided, and a PLC signal is superimposed on the power signal and/or from the power signal. A plurality of first couplers that separate PLC signals, and a PLC signal that is separated from a power signal by a predetermined first coupler of the plurality of first couplers is superimposed on the power signal by another first coupler to control the PLC. There is provided a control unit for operating the control panel, and the control unit is arranged in the box.

In the distribution board having the above configuration, the control unit further includes a second coupler which is provided on a primary side power line of the main breaker and superimposes a PLC signal on a power signal and/or separates a PLC signal from the power signal. Superimposes the PLC signal separated from the power signal by the second coupler on the power signal by the first coupler and/or superimposes the PLC signal separated from the power signal by the first coupler on the power signal by the second coupler. Then, the PLC may be controlled.

Further, in the distribution board having the above configuration, the control unit may be configured to be capable of transmitting and receiving a signal by an optical fiber or a wireless communication with a communication unit built in a power meter provided on the primary side of the main breaker. Good.

Further, in the distribution board having the above configuration, the main breaker and the plurality of branch breakers are attached to a front surface side of a plate-shaped substrate arranged in the box, and the control unit is attached to a rear surface side of the substrate. May be

Further, in the distribution board having the above configuration, the plurality of branch breakers may be detachably attached to the substrate.

Further, in the distribution board of the above configuration, further having a storage battery, the control unit, when the power supply from the commercial power supply is stopped, the power from the storage battery into the house through the main breaker or the plurality of branch breakers. It may be configured to be supplied.

Further, in the distribution board of the above configuration, further comprising an emergency lighting device, the control unit, when the power supply from the commercial power supply is stopped, to supply power to the lighting device from the storage battery, to turn on Good.

According to the present invention, a control unit for controlling communication of PLC signals bypassing various breakers can be installed without requiring a new installation location, and space can be saved.

It is a schematic front view which shows one Embodiment of the electricity distribution panel which concerns on this invention. It is a schematic circuit diagram which shows one Embodiment of the distribution board which concerns on this invention. It is a circuit diagram which shows an example of the coupler which can be used by this invention. It is a vertical sectional view showing one embodiment of a distribution board concerning the present invention. It is a figure showing an example of whole composition of a PLC system.

Hereinafter, the distribution board according to the present invention will be described in more detail with reference to the drawings, but the present invention is not limited to these embodiments. In the present specification, "horizontal direction", "up-down direction", and "front-back direction" refer to the left-right direction, up-down direction, and front-back direction shown in the drawings.

1 is a schematic front view showing one embodiment of a distribution board according to the present invention, and FIG. 2 is a schematic circuit diagram. As shown in FIG. 1, commercial power that has been reduced in voltage (100 V, 200 V) by a power pole transformer (see FIG. 5) is provided at a predetermined position inside the house through a watt-hour meter WM through a lead-in wire 93. It is supplied to the electric panel D. The distribution board D includes a box 1, a plate-shaped board 2 installed in the box 1, a limiter 3 installed in the board 2, a master breaker 4, a plurality of branch breakers 5, and a box 1 inside the box 1. And an illumination lamp L for illuminating.

The box 1 includes a main body 11 having a rectangular shape when viewed from the front side and having a predetermined thickness in the front-rear direction and having a front opening, and a lid 12 (shown by a broken line in FIG. 1) covering the front opening of the main body 11. Have.

Cylindrical protrusions

13a and 13b are formed on the upper and lower outer surfaces of the left end of the main body 11 so as to project outward. 14a and 14b are formed. By engaging the

engagement holes

14a and 14b of the lid portion 12 with the

columnar protrusions

13a and 13b of the body portion 11, the lid portion 12 can be opened and closed with respect to the body portion 11 with the

columnar protrusions

13a and 13b as axes. There is. The box 1 is not particularly limited as long as the main breaker 4 and the branch breaker 5 can be installed, and a conventionally known box can be used. For example, it may be composed of only the main body 11 without the lid 12.

Like the box 1, the substrate 2 has a rectangular shape when viewed from the front side and has a shape smaller than the front opening of the box 1. A limiter 3, a master breaker 4, and a plurality of branch breakers 5 are attached to the front surface side of the substrate 2. Then, as will be described later, the controller 6 (illustrated in FIG. 4) is attached to the rear surface side of the substrate 2.

The limiter 3 is a device that shuts off the power supply when a current of amperes or more determined by a contract with a power company flows. Note that the limiter 3 may not be necessary depending on the electric power company. The limiter 3 used in the present invention may be a conventionally known one.

　The master breaker 4 detects the current in the entire home and shuts off the circuit when the rated current is exceeded. As the main breaker 4 used in the present invention, a conventionally known one can be used.

The branch breaker 5 is divided according to its use, for example, "1st floor lighting equipment" and "2nd floor bedroom outlet", and cuts off the circuit when the current used exceeds the rated current. As the branch breaker 5 used in the present invention, a conventionally known one can be used.

In the distribution board D shown in FIG. 1, the primary side of the main breaker 4 is also connected to the storage battery B via the converter In. Normally, the electric power supplied from the electric power company is stored in the storage battery B after being converted from alternating current to direct current by the converter In via the limiter 3. On the other hand, during a power failure, the storage battery B supplies power. Specifically, the DC voltage supplied from the storage battery B is converted into an AC voltage by the converter In and then supplied to the primary side of the main breaker 4.

An illumination lamp L that illuminates the inside of the box 1 is arranged on the distribution board D, and power is supplied from the storage battery B to the illumination lamp L during a power failure. Accordingly, at the time of power failure, the illumination lamp L is turned on to indicate the presence of the distribution board D, and the work on the distribution board D and the vicinity thereof becomes easy. An LED (Light Emitting Diode), which consumes less power, is preferably used as the illumination lamp L.

As shown in the circuit diagram of FIG. 2, on the primary side of the limiter 3, one neutral wire N and two neutral wires N connected to a utility pole transformer (see FIG. 5) via a watt hour meter WM. The lead-in wire 93 consisting of a total of three power lines L1 and L2 is connected. The secondary side of the limiter 3 and the primary side of the main breaker 4 are connected by a connection line 94 consisting of one neutral line N and two power lines L1 and L2. On the secondary side of the main breaker 4, a main line cable 95 consisting of N main line, L1 main line and L2 main line is connected, and a plurality of branch breakers 5a to 5d are connected to the main line cable 95. It is connected.

In the circuit diagram of FIG. 2, the branch breaker 5a and the primary side of the branch breaker 5b are connected to the L1 phase trunk cable consisting of the N trunk line and the L1 trunk line, and the L2 phase trunk cable consisting of the N trunk line and the L2 trunk line is connected to the branch breaker 5c. The primary side of the branch breaker 5d is connected. The power line PL is connected to the secondary side of each of the branch breakers 5a to 5d. As shown in FIG. 5, the power line PL is wired indoors and connected to the outlet 92. Various household appliances are connected to the outlet 92 via the PLC modem 91.

First couplers 7a to 7d are attached to the secondary sides of the branch breakers 5a to 5d, respectively. The second coupler 8 is attached to the lead-in wire 93 connected to the primary side of the limiter 3. The first couplers 7a to 7d and the second coupler 8 are devices that superimpose the PLC signal on the power signal and/or separate the PLC signal from the power signal, and are composed of an inductive coupler and a capacitive coupler.

FIG. 3 shows a circuit diagram showing an example of a coupler that can be used in the present invention. The coupler shown in this figure includes a coupling circuit section 71 including a coupling transformer, a transmission circuit section 72 that amplifies a PLC signal and superimposes it on a power signal, and sends the PLC signal from the power signal captured through the coupling circuit section 71. It has the receiving circuit part 73 which isolate|separates. The PLC signal separated from the power signal by the reception circuit unit 73 is sent to the control unit 6, while the PLC signal sent from the control unit 6 is sent out by the transmission circuit unit 72 with the power signal superimposed thereon.

The control unit 6 controls which of the first couplers 7a to 7d or the second coupler 8 superimposes the PLC signal sent from the first couplers 7a to 7d and the second coupler 8 on the power signal. For example, in the PLC system shown in FIG. 5, when an operation signal such as an ON/OFF signal of the air conditioner Ac or a set temperature signal is output from a personal computer (PC), the operation signal is superimposed on the power signal by the PLC modem 91, It is sent to the branch breaker 5d (shown in FIG. 2) through the outlet and the power line PL. In FIG. 2, the operation signal sent to the branch breaker 5d is separated from the power signal by the first coupler 7d attached to the secondary side of the branch breaker 5d and sent to the control unit 6. The control unit 6 superimposes the operation signal from the PC on the power signal by the first coupler 7b attached to the secondary side of the branch breaker 5b to which the power line PL that sends power to the air conditioner Ac is connected. The operation signal superposed on the power signal passes through the power line PL, reaches the air conditioner Ac via the outlet 92 and the PLC modem 91, and the operation of the air conditioner Ac is controlled.

When an operation signal of the air conditioner Ac is sent from the public line 94 such as an optical fiber via the Internet shown in FIG. 5, the operation is performed by the parent PLC modem (not shown) provided on the secondary side of the electric pole transformer. The signal is superimposed on the power signal and sent to the limiter 3 through the service line 93 and the power meter WM. Then, as shown in FIG. 2, the operation signal is separated from the power signal by the second coupler 8 provided on the primary side of the limiter 3 and sent to the control unit 6. Similarly to the above, the control unit 6 superimposes the operation signal from the PC on the power signal by the first coupler 7b attached to the secondary side of the branch breaker 5b to which the power line PL that sends power to the air conditioner Ac is connected. To do. The operation signal superposed on the power signal passes through the power line PL, reaches the air conditioner Ac via the outlet 92 and the PLC modem 91, and the operation of the air conditioner Ac is controlled.

According to the system as described above, the operation signal (PLC signal) is transmitted by bypassing the main breaker 4 and the branch breaker 5, so that signal attenuation during transmission is suppressed. It should be noted that a configuration may be possible in which signals can be transmitted and received between the control unit 6 and a communication unit built in the electric energy meter WM or the outside through a wired or wireless communication line such as an optical fiber (not shown).

Fig. 4 shows a vertical sectional view of the distribution board D. As described above, the board 2 is mounted in the distribution board D. Specifically, four support members 15 are provided on the inner surface of the rear wall 11a of the main body 11 of the distribution board D at predetermined distances in the up-down direction and the left-right direction (perpendicular to the paper surface). There is. That is, the support members 15 are provided at the positions facing the four corners of the rectangular substrate 2 as viewed from the front side. The support member 15 may be integrally formed with the main body 11 (for example, by cutting and raising), or may be formed separately from the main body 11 and joined by a conventionally known method such as welding. The support member 15 has an L-shaped cross section, and has a leg portion 15a extending forward from the rear wall 11a, and a support portion 15b extending from the front end of the leg portion 15a toward the center in the vertical direction. The front surfaces of the support portions 15b of the four support members 15 form the same plane. A female screw hole 16 is formed in the support portion 15b.

As mentioned above, a limiter 3, a master breaker 4, and a plurality of branch breakers 5 are attached to the front side of the rectangular substrate 2 when viewed from the front side (see FIG. 1). Through holes 21 are formed in the four corners of the substrate 2, respectively. The board 2 is attached to the distribution board D after the female screw holes 16 formed in the support portions 15b of the four support members 15 and the through holes 21 formed in the four corners of the board 2 are superposed in the front-rear direction. The mounting screw SC is inserted from the front side into the through hole 21 of the substrate 2 and screwed into the female screw hole 16 of the supporting member 15.

A limiter 3, a main breaker 4, and a plurality of branch breakers 5 are attached to the front surface side of the substrate 2, and wiring for connecting them is also arranged, but the rear surface side of the substrate 2, that is, the substrate secured by the support member 15. No member is basically arranged in the gap between the rear surface of the second panel 2 and the rear wall 11a of the distribution board D. Therefore, in the present embodiment, the control unit 6 is provided in this space (gap) to effectively utilize the space. The control unit 6 may be arranged in the box 1, but is preferably arranged in the box 1 from the viewpoint of suppressing failure factors such as dew condensation. The mounting position of the control unit 6 may be the front surface of the substrate 2 or the rear surface of the lid 12.

ADVANTAGE OF THE INVENTION According to the distribution board which concerns on this invention, the control part for performing the communication control of the PLC signal bypassed by various breakers can be installed without requiring a new installation place, and space saving can be achieved and it is useful. is there.

1 Box 2 Substrate 4

Main Breaker

5, 5a to 5d Branch Breaker 6 Control Unit 7, 7a to 7d 1st Coupler 8 2nd Coupler B Storage Battery D Distribution Board L Lighting Light (Lighting Equipment)
In converter WM watt hour meter

Claims

A distribution board used for a communication (PLC) system using a power line used for supplying power from a commercial power source,
Box and
A master breaker installed in the box,
A plurality of branch breakers arranged in the box and connected to the secondary side of the main breaker;
A plurality of first couplers provided on the secondary power lines of each of the plurality of branch breakers, for superimposing the PLC signal on the power signal and/or for separating the PLC signal from the power signal;
A control unit for controlling a PLC by superimposing a PLC signal separated from a power signal by a predetermined first coupler among the plurality of first couplers on the power signal by another first coupler;
Have
A distribution board, wherein the control unit is arranged in the box.
Further comprising a second coupler provided on the primary side power line of the main breaker, for superimposing the PLC signal on the power signal and/or for separating the PLC signal from the power signal,
The control unit superimposes the PLC signal separated from the power signal by the second coupler on the power signal by the first coupler, or the PLC signal separated by the second coupler from the power signal by the second coupler. The distribution board according to claim 1, wherein the PLC is controlled by being superposed on the PLC.
The distribution board according to claim 1, wherein the control unit is capable of transmitting and receiving a signal via an optical fiber or a radio to and from a communication unit built in a power meter provided on the primary side of the master breaker.
The trunk breaker and the plurality of branch breakers are attached to the front surface side of a plate-shaped substrate arranged in the box,
The distribution board according to any one of claims 1 to 3, wherein the control unit is attached to a rear surface side of the substrate.
The distribution board according to claim 4, wherein the plurality of branch breakers are detachable from the substrate.
Further having a storage battery,
The power distribution according to any one of claims 1 to 5, wherein the control unit causes the storage battery to supply power to the house through the main breaker or the plurality of branch breakers when power supply from a commercial power source is stopped. Board.
Further having an emergency lighting,
7. The distribution board according to claim 6, wherein the control unit supplies power to the lighting fixture from the storage battery to turn on the lighting fixture when power supply from a commercial power supply is stopped.