JP2011101526A - Power distribution panel and power distribution system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power distribution panel capable of efficiently utilizing a connecting space while suppressing scale-up, and to provide a power distribution system including the power distribution panel. <P>SOLUTION: The power distribution panel of a power supply system includes: a trunk breaker 53; long plate-like AC conducting bars 54a, 54b, 54c provided to extend in one direction (on the right) from the disposition position of the trunk breaker 53; long plate-like DC conducting bars 64a, 64b which extend in right and left directions and disposed to be superimposed on the AC conducting bars 54a, 54b, 54c in the thickness direction (front and rear direction) of the AC conducting bars 54a, 54b, 54c, which directly crosses the right and left direction; and an AC breaker 55, a DC breaker 66 and an interlinking breaker 69 which are juxtaposed along the right and left direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a power distribution board and a power distribution system including the power distribution board.

  2. Description of the Related Art Conventionally, a distribution system provided in a house or the like has an AC conductive bar that constitutes an AC distribution path, a power conversion device that converts AC power into DC power, and a DC conductive bar that constitutes a DC distribution path. There was a thing provided with a switchboard (distribution board) (for example, patent documents 1).

  In the switchboard of Patent Document 1, the AC conductive bar is connected to a connection terminal (power supply side terminal of the branch breaker) for supplying AC power to the AC device, while the DC conductive bar is connected to the DC device. A connection terminal (plug-in terminal portion) for supplying DC power is connected.

JP 2008-42998 A

  By the way, in recent years, DC devices such as communication devices and LED lighting devices tend to increase. Therefore, it is desired to secure a wider connection space in order to connect the connection terminals to the DC conductive bar. However, if such a connection space is secured, there is a problem that the switchboard is enlarged and the secured connection space is not fully utilized in a house or the like where DC devices are not used much.

  This invention is made | formed in view of such a situation, It is providing the power distribution system provided with the switchboard which can utilize a connection space efficiently, suppressing this enlargement, and this switchboard.

In the following, means for achieving the above object and its effects are described.
The switchboard according to claim 1 extends along the one direction while extending along the one direction, a main plate breaker, a long plate-like AC conductive bar extending in one direction from the arrangement position of the main breaker, and the one direction In the thickness direction of the AC conductive bar that intersects with the AC conductive bar, a long plate-like DC conductive bar arranged to overlap the AC conductive bar, and a plurality of branch breakers arranged in parallel along the one direction It is a summary to provide.

  According to this configuration, the long plate-like DC conductive bar is arranged in the thickness direction so as to overlap with the long plate-like AC conductive bar extending in one direction from the arrangement position of the main breaker. The enlargement of the apparatus can be suppressed. Further, since the branch breaker is arranged in parallel along the extending direction (one direction) of the AC conductive bar and the DC conductive bar, it is connected to the branch breaker connected to the AC conductive bar and the DC conductive bar. A branch breaker can be arbitrarily arranged. That is, since the connection space of the branch breaker can be shared for AC and DC, the connection space can be efficiently utilized while suppressing an increase in size.

  The switchboard according to claim 2, wherein the branch breaker has a primary side plug-in terminal portion that can be connected to either the AC conductive bar or the DC conductive bar in an insertion manner. To do.

  According to this structure, since the branch breaker has the primary side plug-in terminal part which can be connected in an insertion mode, the connection work of a branch breaker can be performed easily. Further, when the branch breaker is inserted, it is connected to one of the AC conductive bar and the DC conductive bar, so that erroneous connection can be suppressed.

  The switchboard according to claim 3 further includes a power converter that converts AC power into DC power, and the power converter is a plug that can be connected to the AC conductive bar and the DC conductive bar in a plug-in manner. The gist is to have an in-terminal portion.

  According to this structure, since the power converter device which converts alternating current power into direct current power has a plug-in terminal part, it can be easily connected only by plugging in the alternating current conductive bar and the direct current conductive bar. Moreover, since the AC conductive bar and the DC conductive bar are extended in one direction, the connection position of the power converter can be easily changed to any position along the one direction.

  The switchboard according to claim 4, further comprising a housing having an opening, wherein the conductive bar having a lower maximum voltage among the AC conductive bar and the DC conductive bar is disposed on the opening side. The main point is to be arranged in

  According to this configuration, the conductive bar having the lower maximum voltage among the AC conductive bar and the DC conductive bar is disposed on the opening side in the housing, so that the conductive bar having a higher voltage can be kept away from the opening. it can.

The gist of a power distribution system according to claim 5 is provided with the switchboard.
According to this structure, the same effect as the said switchboard can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the distribution board which can utilize a connection space efficiently, and a distribution system provided with this distribution board can be provided, suppressing enlargement.

Explanatory drawing which shows the structure of a power distribution system. The block diagram of a switchboard. The external appearance perspective view of a switchboard. The front view which shows a part of arrangement | positioning in a switchboard. FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. FIG. 5 is a cross-sectional view taken along line B-B in FIG. 4.

Hereinafter, an embodiment in which the power distribution system of the present invention is embodied in a power supply system will be described with reference to FIGS.
As shown in FIG. 1, a house is provided with a power supply system 1 that supplies power to various devices (such as lighting devices, air conditioners, home appliances, and audiovisual devices) installed in the house. The power supply system 1 operates various devices using a commercial AC power source (AC power source) 2 for home use as power, and also supplies the power of the solar cell 3 generated by sunlight as power to the various devices. The power supply system 1 supplies power not only to the DC device 5 that operates by inputting a DC power supply (DC power supply) but also to the AC device 6 that operates by inputting an AC power supply (AC power supply).

  The power supply system 1 is provided with a control unit 7 and a DC distribution board (built-in DC breaker) 8 as a distribution board of the system 1. The power supply system 1 is provided with a control unit 9 and a relay unit 10 as devices for controlling the operation of the DC device 5 in the house.

  An AC distribution board 11 for branching an AC power supply is connected to the control unit 7 via an AC power line 12. The control unit 7 is connected to the commercial AC power source 2 through the AC distribution board 11 and is connected to the solar cell 3 through the DC system power line 13. The control unit 7 takes in AC power from the AC distribution board 11 and DC power from the solar cell 3 and converts these powers into predetermined DC power as a device power source. Then, the control unit 7 outputs the converted DC power to the DC distribution board 8 via the DC system power line 14 or outputs it to the storage battery 16 via the DC system power line 15 to store the same power. To do. The control unit 7 can not only take AC power from the AC distribution board 11 but also convert DC power of the solar cell 3 and the storage battery 16 to AC power and supply it to the AC distribution board 11. The control unit 7 exchanges data with the DC distribution board 8 via the signal line 17.

  The DC distribution board 8 is a kind of breaker that supports DC power. The DC distribution board 8 branches the DC power input from the control unit 7 and outputs the branched DC power to the control unit 9 via the DC power line 18 or relays via the DC power line 19. Or output to the unit 10. Further, the DC distribution board 8 exchanges data with the control unit 9 via the signal line 20 and exchanges data with the relay unit 10 via the signal line 21.

  A plurality of DC devices 5 are connected to the control unit 9. These DC devices 5 are connected to the control unit 9 via a DC supply line 22 that can carry both DC power and data by a pair of lines. The DC supply line 22 superimposes a communication signal for transmitting data by a high-frequency carrier wave on a DC voltage serving as a power source for the DC device 5, so that both the power and the data are supplied to the DC device through a pair of wires. 5 to transport. The control unit 9 acquires the DC power supply of the DC device 5 via the DC power line 18 and controls which DC device 5 based on the operation command obtained from the DC distribution board 8 via the signal line 20. Know what to do. Then, the control unit 9 controls the operation of the DC device 5 by outputting a DC voltage and an operation command to the instructed DC device 5 via the DC supply line 22.

  A switch 23 that is operated when switching the operation of the DC device 5 in the house is connected to the control unit 9 via a DC supply line 22. In addition, a sensor 24 that detects a radio wave transmitted from an infrared remote controller, for example, is connected to the control unit 9 via a DC supply line 22. Therefore, not only the operation instruction from the DC distribution board 8 but also the operation of the switch 23 and the detection of the sensor 24, a communication signal is sent to the DC supply line 22 to control the DC device 5.

  A plurality of DC devices 5 are connected to the relay unit 10 via individual DC power lines 25, respectively. The relay unit 10 acquires the DC power supply of the DC device 5 through the DC power line 19 and determines which DC device 5 is to be operated based on an operation command obtained from the DC distribution board 8 through the signal line 21. To grasp. The relay unit 10 controls the operation of the DC device 5 by turning on / off the power supply to the DC power line 25 with respect to the instructed DC device 5 using a built-in relay. In addition, a plurality of switches 26 for manually operating the DC device 5 are connected to the relay unit 10, and the DC power line 25 is turned on and off by the relay by operating the switch 26, thereby enabling the DC unit 5 to operate the DC unit 5. The device 5 is controlled.

  The DC distribution board 8 is connected to a DC outlet 27 built in a house in the form of a wall outlet or a floor outlet, for example, via a DC power line 28. If a plug (not shown) of a DC device is inserted into the DC outlet 27, DC power can be directly supplied to the device.

  Further, a power meter 29 capable of remotely metering the amount of use of the commercial AC power supply 2 is connected between the commercial AC power supply 2 and the AC distribution board 11. The power meter 29 is equipped with not only a function of remote meter reading of the amount of commercial power used, but also a function of power line carrier communication and wireless communication, for example. The power meter 29 transmits the meter reading result to an electric power company or the like via power line carrier communication or wireless communication.

  The power supply system 1 is provided with a network system 30 that enables various devices in the home to be controlled by network communication. The network system 30 is provided with a home server 31 as a control unit of the system 30. The home server 31 is connected to a management server 32 outside the home via a network N such as the Internet, and is connected to a home device 34 via a signal line 33. The in-home server 31 operates using DC power acquired from the DC distribution board 8 via the DC power line 35 as a power source.

  A control box 36 that manages operation control of various devices in the home by network communication is connected to the home server 31 via a signal line 37. The control box 36 is connected to the control unit 7 and the DC distribution board 8 via the signal line 17 and can directly control the DC device 5 via the DC supply line 38. For example, a gas / water meter 39 capable of remotely metering the amount of gas used or the amount of water used is connected to the control box 36 and also connected to the operation panel 40 of the network system 30. The operation panel 40 is connected to a monitoring device 41 including, for example, a door phone slave, a sensor, and a camera.

  When the in-home server 31 inputs an operation command for various devices in the home via the network N, the home server 31 notifies the control box 36 of the instruction, and operates the control box 36 so that the various devices operate in accordance with the operation command. . The in-home server 31 can provide various information acquired from the gas / water meter 39 to the management server 32 through the network N, and accepts from the operation panel 40 that the monitoring device 41 has detected an abnormality. This is also provided to the management server 32 through the network N.

  In this embodiment, the control unit 7, the DC distribution board 8, the AC distribution board 11, the AC system power line 12, and the DC system power line 14 are constituent elements of the distribution board (AC / DC hybrid distribution board) 42.

Next, the electrical configuration of the switchboard 42 will be described with reference to FIG.
As shown in FIG. 2, the switchboard 42 is connected to the commercial AC power supply 2 via a service entrance wiring 51 connected to a commercial distribution line 50 of an electric power company. The switchboard 42 is provided with a limiter 52, a main breaker 53, an AC main line 54, an AC breaker 55, and an interconnection breaker 56. The limiter 52, the main breaker 53, the AC trunk line 54, the AC breaker 55, and the interconnection breaker 56 constitute the AC distribution board 11.

  The limiter 52 is an ampere breaker that automatically shuts off the circuit when a current exceeding a limit value set based on a contract with an electric power company that provides the commercial AC power supply 2 flows. Further, the main breaker 53 is a leakage breaker that breaks the circuit when a leakage or short circuit occurs and an abnormal current flows.

  The AC main line 54 constituting the AC power line 12 is connected to the commercial AC power supply 2 via the main breaker 53, and the AC breaker 55 or the interconnection breaker 56 is connected to the branch circuit branched from the AC main line 54. Is done.

  The AC breaker 55 and the interconnection breaker 56 are branch breakers (wiring breakers) that cut off the circuit when the current flowing through the branch circuit exceeds a predetermined threshold. Note that the AC breaker 55 and the interconnection breaker 56 are provided so as to correspond to each connected AC device 6 or each connected power system, and the number of installations can be arbitrarily changed.

  In addition, the switchboard 42 is provided with an AC / DC converter 57, DC / DC converters 60 and 61 as voltage converters, a DC main line 64, a DC breaker 66, a control unit 67, and an interconnection breaker 69. The AC / DC converter 57, the DC / DC converters 60 and 61, and the control unit 67 constitute the control unit 7. The DC main line 64, the DC breaker 66 and the interconnection breaker 69 constitute a DC distribution board 8.

  AC / DC converter 57 has a primary side connected to AC main line 54 via interconnection breaker 56 and a secondary side connected to DC main line 64. The AC / DC converter 57 converts AC power input from the AC main line 54 side to DC power, and steps down the DC voltage converted from the AC voltage and outputs it to the DC main line 64 side.

  An interconnection breaker 69 or a DC breaker 66 is connected to a plurality of branch circuits branched from the DC trunk line 64 constituting the DC system power line 14. The interconnection breaker 69 and the DC breaker 66 are branch breakers (wiring breakers) that cut off the circuit when the current flowing through the branch circuit from the DC main line 64 exceeds a predetermined threshold. The interconnection breaker 69 and the DC breaker 66 are provided so as to correspond to each connected DC device 5 or each connected power system, and the number of installations can be arbitrarily changed.

  DC / DC converters 60 and 61 are connected to each interconnection breaker 69. The DC / DC converter 60 converts the direct current voltage input from the solar cell 3 into a predetermined value and outputs it to the direct current main line 64 side. Further, the DC / DC converter 61 transforms the DC voltage discharged from the storage battery 16 and outputs it to the DC main line 64 side, or transforms the DC voltage input from the DC main line 64 side and outputs it to the storage battery 16 side. To do.

Next, the arrangement configuration of the switchboard 42 will be described with reference to FIGS. 3 and 4.
As shown in FIG. 3, the switchboard 42 includes a housing 70 that accommodates the above-described components, and is attached to, for example, a wall surface near the ceiling of a house. A lid 71 that can be opened and closed is provided on the front side of the housing 70, and an opening 72 is provided in the lid 71.

  As shown in FIG. 4, a trunk breaker 53 is disposed on one end side in the left-right direction (left end side in FIG. 3) in the housing 70, and in one direction from the trunk breaker 53 (right direction in FIG. 3). An AC trunk line 54 extending along the line is arranged. Further, a DC trunk line 64 is disposed on the front side (opening 72 side) of the AC trunk line 54 so as to overlap. That is, the DC trunk line 64 extends in the left-right direction and is disposed so as to overlap the AC trunk line 54 in the thickness direction (front-rear direction) of the AC trunk line 54 orthogonal to the left-right direction. The AC trunk line 54 and the DC trunk line 64 are fixed to the housing 70 in a state of being separated from each other in the front-rear direction by a fixing tool 73 made of an insulator.

  An AC breaker 55 is disposed at a position adjacent to the AC trunk line 54 and the DC trunk line 64 in the vertical direction along one direction (left and right direction in FIG. 3) that is the extending direction (longitudinal direction) of the AC trunk line 54 and the DC trunk line 64. An interconnection breaker 69, a DC breaker 66, and a power conversion module 75 constituting a power conversion device are provided together. Note that the power conversion module 75 is an integrated circuit breaker 56 and AC / DC converter 57 (see FIG. 2). The positions of the AC breaker 55, the power conversion module 75, the interconnection breaker 69, and the DC breaker 66 can be arbitrarily changed.

Next, configurations of the AC trunk line 54, the DC trunk line 64, the AC breaker 55, and the power conversion module 75 will be described with reference to FIG.
As shown in FIG. 5, the AC trunk line 54 includes long plate-like AC conductive bars 54 a, 54 b, 54 c connected to the secondary poles (L 1, L 2, N) of the main breaker 53. Is done. The AC conductive bars 54a and 54b are voltage lines (L1, L2) to which a predetermined potential (for example, an AC voltage having an execution value of 100 V applied from the commercial AC power supply 2) is applied, and the AC conductive bar 54c is grounded neutral. Line (N). The AC conductive bars 54a, 54b, 54c are all formed to have the same width (length in the vertical direction), length (length in the left-right direction), and thickness (length in the front-rear direction).

  The DC main line 64 is composed of a pair of long plate-like DC conductive bars 64a and 64b. The DC conductive bar 64a constitutes a positive pole (+), and the DC conductive bar 64b constitutes a negative pole (-). Further, the DC conductive bars 64a and 64b are formed to have the same width, length and thickness.

  The AC breaker 55 includes a power supply side terminal 55a as a primary plug-in terminal connected to the AC main line 54, an opening / closing mechanism 55b, and a load side terminal 55c connected to the power supply side terminal 55a via the opening / closing mechanism 55b. And an opening / closing mechanism operation unit 55d. The AC breaker 55 includes three AC conductive bars 54a, 54b, and 54c that overlap in the thickness direction and five insertion recesses 55e into which the two DC conductive bars 64a and 64b can be inserted. The side terminal 55a is a plug-in terminal that can be connected to the AC main line 54 in an insertion manner.

  When the corresponding voltage of the AC breaker 55 is 100 V, the power supply side terminal 55a is connected to a voltage line (AC conductive bar 54a or AC conductive bar 54b) and a neutral line (AC conductive bar 54c) (FIG. 5). When the corresponding voltage of the AC breaker 55 is 200 V, the power supply side terminal 55a is connected to two voltage lines (AC conductive bar 54a and AC conductive bar 54b) (not shown). Therefore, when the AC breaker 55 is inserted into the AC trunk line 54 and the DC trunk line 64, the power supply side terminal 55 a of the AC breaker 55 is electrically connected to the AC trunk line 54, and the AC device is connected to the load side terminal 55 c of the AC breaker 55. 6 is supplied with an alternating current at an execution value of 100V or 200V. Note that the opening / closing mechanism operation unit 55 d of the AC breaker 55 is disposed at a position corresponding to the opening 72 of the housing 70 in a state where the AC breaker 55 is inserted into the AC main line 54 and the DC main line 64.

  The power conversion module 75 incorporates an interconnection breaker 56 and an AC / DC converter 57. The interconnection breaker 56 includes a power supply side terminal 56a constituting a plug-in terminal portion connected to the AC trunk line 54, an opening / closing mechanism 56b, and a load side terminal 56c connected to the power supply side terminal 56a via the opening / closing mechanism 56b. And an opening / closing mechanism operation unit 56d. The AC / DC converter 57 is connected to the AC side terminal 57a connected to the load side terminal 56c of the interconnection breaker 56, the power conversion mechanism 57b, and the DC side connected to the DC main line 64 constituting the plug-in terminal portion. And a terminal 57c.

  The power conversion module 75 includes five insertion recesses 75e into which three AC conductive bars 54a, 54b, and 54c and two DC conductive bars 64a and 64b that overlap in the thickness direction can be inserted. The power supply side terminal 56 a of the interconnection breaker 56 is a plug-in terminal that can be connected to the AC main line 54 in an insertion manner, and the DC side terminal 57 c of the AC / DC converter 57 is connected to the DC main line 64. Plug-in terminals that can be connected in a plug-in manner.

  When the power conversion module 75 is inserted into the AC main line 54 and the DC main line 64, the power supply side terminal 56a is connected to the AC main line 54, and an AC current is input. Therefore, the power conversion mechanism 57b converts the DC current into a DC current. Then, it outputs to the DC main line 64 side via the DC side terminal 57c. Therefore, a low voltage (for example, 48V) DC voltage is applied to the DC main line 64. Note that the DC voltage applied to the DC main line 64 can be arbitrarily set in consideration of the corresponding voltage of the DC device 5 connected to the DC breaker 66 and the like. In addition, the opening / closing mechanism operation unit 56 d of the interconnection breaker 56 is disposed at a position corresponding to the opening 72 of the housing 70 in a state where the power conversion module 75 is inserted into the AC main line 54 and the DC main line 64.

Next, the structure of the interconnection breaker 69 and the DC breaker 66 is demonstrated based on FIG.
As shown in FIG. 6, the interconnection breaker 69 includes a power supply side terminal 69a constituting a primary plug-in terminal connected to the DC main line 64, an opening / closing mechanism 69b, and a power supply side terminal 69a via the opening / closing mechanism 69b. And a load-side terminal 69c connected to the opening / closing mechanism operating portion 69d. The interconnection breaker 69 includes five insertion recesses 69e into which three AC conductive bars 54a, 54b, 54c and two DC conductive bars 64a, 64b that overlap in the thickness direction can be inserted. The power supply side terminal 69 a is a plug-in terminal that can be connected to the DC main line 64 in an insertion manner.

  When the interconnection breaker 69 is inserted into the AC trunk line 54 and the DC trunk line 64, the power supply side terminal 69 a of the interconnection breaker 69 is electrically connected to the DC trunk line 64. The opening / closing mechanism operation unit 69d of the interconnection breaker 69 is disposed at a position corresponding to the opening 72 of the housing 70 in a state where the interconnection breaker 69 is inserted into the AC main line 54 and the DC main line 64.

  The DC breaker 66 includes a power supply side terminal 66a constituting a primary plug-in terminal connected to the DC main line 64, an opening / closing mechanism 66b, and a load side terminal 66c connected to the power supply side terminal 66a via the opening / closing mechanism 66b. And an opening / closing mechanism operation unit 66d. The DC breaker 66 includes three AC conductive bars 54a, 54b, 54c and two DC conductive bars 64a, 64b, which overlap in the thickness direction, and five insertion recesses 66e into which two DC conductive bars 64a, 64b can be inserted. The side terminal 66a is a plug-in terminal that can be connected to the DC main line 64 in an insertion manner.

  When the DC breaker 66 is inserted into the AC trunk line 54 and the DC trunk line 64, the power source side terminal 66a of the DC breaker 66 is electrically connected to the DC trunk line 64, and the DC device is connected to the load side terminal 66c of the DC breaker 66. 5 is supplied with a direct current at a low pressure (for example, 48V).

According to this embodiment described above, the following effects can be obtained.
(1) Long plate-like DC conductive bars 64a and 64b are elongated plate-shaped AC conductive bars 54a, 54b and 54c extending in one direction from the position where the main breaker 53 is arranged. Since it arrange | positions in piles, the enlargement of the switchboard 42 can be suppressed. Further, since the AC breaker 55, the DC breaker 66, and the interconnection breaker 69 are arranged in parallel along the extending direction (one direction) of the AC trunk line 54 and the DC trunk line 64, the AC breaker 55 connected to the AC trunk line 54 and A DC breaker 66 and an interconnection breaker 69 connected to the DC main line 64 can be arbitrarily arranged. That is, since the connection space of the AC breaker 55 for AC, the DC breaker 66 for DC, and the interconnection breaker 69 can be shared, the connection space can be efficiently utilized while suppressing an increase in size.

  (2) Since the DC breaker 66 and the interconnection breaker 69 have power supply side terminals 66a and 69a that can be connected in an insertion manner, the connection work of the DC breaker 66 and the interconnection breaker 69 can be easily performed. Further, when the AC breaker 55 is inserted, it is inserted into the AC main line 54, while when the DC breaker 66 and the interconnection breaker 69 are inserted, it is connected to the DC main line 64, so that erroneous connection can be suppressed.

  (3) Since the power conversion module 75 has the DC side terminal 57c and the power supply side terminal 56a that can be connected in an insertion manner, the power conversion module 75 can be easily connected only by being inserted into the AC main line 54 and the DC main line 64. Moreover, since the AC trunk line 54 and the DC trunk line 64 extend in one direction, the connection position of the power conversion module 75 can be easily changed to an arbitrary position along the one direction.

  (4) Since the DC main line 64 having a maximum voltage lower than that of the AC main line 54 is disposed on the opening 72 side of the case 70 in the casing 70, the AC main line 54 can be moved away from the opening 72.

  (5) Since the power conversion module 75 incorporates the interconnection breaker 56 and the AC / DC converter 57, the exposed wiring can be reduced and the space in the switchboard 42 can be used efficiently.

  (6) Since the AC breaker 55, the DC breaker 66, the interconnection breaker 69, and the power conversion module 75 are provided with plug-in terminals that can be connected in an insertion manner, the connection work is easy and the connection position is easily changed. be able to.

  (7) The AC breaker 55, the DC breaker 66, the interconnection breaker 69, and the power conversion module 75 include three AC conductive bars 54a, 54b, 54c and two DC conductive bars 64a, 64b that overlap in the thickness direction. Are provided with five insertion recesses 55e, 66e, 69e, and 75e, respectively, so that the thickness can be unified.

  (8) The power supply side terminal 55a of the AC breaker 55 is electrically connected only to the AC main line 54, while the power supply side terminal 66a of the DC breaker 66 and the power supply side terminal 69a of the interconnection breaker 69 are connected to the DC main line 64. Since it is electrically connected only to the connection, erroneous connection can be suppressed.

In addition, the said embodiment can also be changed and implemented as follows.
The AC / DC converter 57 may be changed to a bidirectional converter that incorporates an AC / DC converter and a DC / AC inverter.

  The branch breaker (the AC breaker 55, the DC breaker 66, and the interconnection breaker 69) may not include the five insertion recesses corresponding to the two trunk lines (five conductive bars) overlapping in the thickness direction. For example, two or three insertion recesses corresponding to only the AC main line 54 or only the DC main line 64 that are electrically connected may be provided.

-The size (width, length, thickness) of each conductive bar can be set arbitrarily.
Each conductive bar is not limited to the left-right direction, and any direction can be a longitudinal direction (extending direction).

  The AC trunk line 54 including the AC conductive bars 54 a, 54 b and 54 c may be disposed on the opening 72 side of the housing 70.

  DESCRIPTION OF SYMBOLS 1 ... Power supply system as a power distribution system, 42 ... Power distribution board, 53 ... Master breaker, 54a, 54b, 54c ... Conductive bar for alternating current, 55 ... AC breaker as a branch breaker, 55a ... Primary side plug-in terminal part is comprised Power source side terminal, 56a ... Power source side terminal constituting the plug-in terminal part, 57c ... DC side terminal constituting the plug-in terminal part, 64a, 64b ... DC conductive bar, 66 ... DC breaker as branch breaker, 66a ... Power source side terminal constituting the primary side plug-in terminal part, 69 ... Interconnection breaker as a branch breaker, 69a ... Power source side terminal constituting the primary side plug-in terminal part, 70 ... Housing, 72 ... Opening part, 75 ... A power conversion module as a power conversion device.

Claims (5)

With the main breaker,
A long plate-like AC conductive bar extending in one direction from the position of the main breaker;
In the thickness direction of the alternating current conductive bar that extends along the one direction and intersects the one direction, a long plate-like direct current conductive bar disposed on the alternating current conductive bar; and
A switchboard comprising a plurality of branch breakers arranged in parallel along the one direction. 2. The switchboard according to claim 1, wherein the branch breaker has a primary plug-in terminal portion that can be connected to one of the AC conductive bar and the DC conductive bar in an insertion manner. A power conversion device for converting AC power into DC power;
3. The switchboard according to claim 1, wherein the power conversion device includes a plug-in terminal portion that can be connected to the AC conductive bar and the DC conductive bar in an insertion manner. 4. A housing having an opening;
The conductive bar having a lower maximum voltage among the AC conductive bar and the DC conductive bar is disposed on the opening side in the casing. The switchboard according to claim 1. A power distribution system comprising the power distribution board according to any one of claims 1 to 4.

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