JP2008253002A - Power relay apparatus, power apparatus, and power relay method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve a technology about a power relay apparatus which can connect power apparatus of different power specifications freely to a plurality of apparatus connecting portions, respectively, when power is distributed between a plurality of power apparatus, and the I/O state of power for each power apparatus can be set appropriately according to the power specification of the power apparatus or total balance of power supply and power reception. <P>SOLUTION: The power relay 1 includes a plurality of apparatus connecting portions 10 to which the electric connection wires 44 of a power apparatus 40 are electrically connected removably, and a power bus 2 for electrically connecting the plurality of apparatus connecting portions 10. The power relay 1 acquires power specification information about the supply power or receiving power of each power apparatus 40 having electric connection wires 44 connected with the plurality of apparatus connecting portions 10, and performs I/O state control of power for each power apparatus 40 based on the power specification information of each power apparatus 40 thus acquired. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power relay device that is connected to a plurality of power devices that perform at least one of power feeding and power receiving and transfers power to and from each of the power devices, and an electrical power source that is connected to a device connection unit of the power relay device. A power device that has a connection line, performs at least one of power feeding and power receiving, and transmits and receives power to and from the power relay device, and a plurality of power devices that perform at least one of power feeding and power receiving, The present invention relates to a power relay method for transferring power to and from a power relay device to which a power device is connected.

In recent homes and offices, in addition to power loads such as electrical appliances that consume received power, generators that supply power, storage batteries that selectively perform power supply and power reception, etc. A plurality of power devices that perform at least one of power feeding and power receiving may be provided.
Then, as a power relay device that is connected to such a plurality of power devices and transfers power to and from each of the power devices, the power supply power or the received power of each power device is controlled appropriately, What achieves energy saving is known (for example, refer to Patent Document 1).

Such a power relay device described in Patent Document 1 is connected to each power device so as to be able to communicate separately from a power supply device to which an electrical connection line of each power device such as a generator or a power load is connected. By configuring the power control device to control the output of the generator in accordance with the amount of power received by the power load, “when necessary” “only necessary amount” "Energy saving is achieved by supplying power."
In addition, this power relay device provides a correspondence table indicating the relationship between the operating state of the newly connected power load and the amount of received power in the operating state in order to cope with the addition or change of the power load. And the received power amount of the power load is derived from the correspondence table and the operating state received from the power load.

JP 2001-339857 A

Although the conventional power relay device includes a plurality of device connection units to which a plurality of power devices such as a generator and a power load are electrically connected, for each power device to be connected to each device connection unit, The power specification information related to the supplied power or the received power, such as the power supply type such as whether the device supplies power or receives power, and the power specifications such as the rated voltage value and rated power value of the power handled by the device, It was supposed to be identified.
In other words, the conventional power relay apparatus is not configured to freely connect a generator or a power load to each of the above-described device connection portions, or to freely connect power devices having different power specifications and the like. It was.

  The present invention has been made in view of the above-described problems, and the purpose of the present invention is to electrically connect the electrical connection lines of the plurality of power devices to each other when appropriately transferring power to and from the plurality of power devices. It is possible to freely connect power devices having different power specifications to each of a plurality of device connection sections to be connected, and furthermore, the power input / output status of each power device can be changed to the power specifications of the power device and It is in the point which implement | achieves the technique regarding the power relay apparatus which can be made appropriate according to the balance of electric power feeding and power receiving.

In order to achieve the above object, a power relay apparatus according to the present invention is a power relay apparatus that is connected to a plurality of power devices that perform at least one of power feeding and power receiving and transfers power to and from each of the power devices. The first characteristic configuration includes a plurality of device connection portions to which electrical connection lines of the power device are detachably electrically connected, and
A power bus that electrically connects each of the plurality of device connections;
Power specification information acquisition means for executing power specification information acquisition processing for acquiring power specification information related to power supply power or power reception power of each power device connected to the plurality of device connection units with the electrical connection lines;
Input / output state control means for performing input / output state control for controlling the input / output state of power to each of the power devices based on the power specification information of the respective power devices acquired by the power specification information acquisition means. It is in the point.

According to the first characteristic configuration, the power specification information acquisition unit executes the power specification information acquisition process, so that the device supplies power to each of the power devices connected to the plurality of device connection units. Such as power supply / reception type regarding whether to perform power reception or power reception, cross flow type regarding DC power or AC power for the power handled by the equipment, power specifications regarding the rated voltage value and rated power value of the power, etc. In addition, it is possible to acquire power specification information related to the supplied power or received power.
Further, by executing the input / output state control by the input / output state control means, the power input to the power device is input based on the power specification information of each power device acquired by executing the power specification information acquisition process. The output state can be controlled so as to be appropriate for the power specifications of the respective power devices, for example, and further, the balance of the overall power supply and power reception can be controlled appropriately. The power input / output state for a power device indicates a state of power actually input / output to / from the power device. For example, a state of whether power is supplied to or received from the power device, power Examples of the power supplied to or received from the device include DC power or AC power, voltage values, current values, frequencies, and the like.
Therefore, each of the plurality of device connection portions to which the electrical connection lines of the plurality of power devices are electrically connected is configured such that the electrical connection line of the power device is detachable, and the power specification information acquisition unit And, by executing the power specification information acquisition process and the input / output state control by the input / output state control means, power devices having different power specifications and the like can be freely connected to the respective device connection units. Therefore, it is possible to appropriately exchange power with each of the connected power devices.

In order to achieve the above object, the power relay method according to the present invention provides power transfer between a plurality of power devices that perform at least one of power feeding and power receiving and a power relay device to which each power device is connected. The power relay method is characterized in that the power relay device includes: a plurality of device connection portions to which electrical connection lines of the power devices are detachably connected; and a plurality of device connection portions. A power bus for electrically connecting each of them,
A power specification information acquisition process in which the power relay apparatus acquires power specification information related to a power supply power or a power reception power of each of the power devices connected to the plurality of device connection units; and the power specification information acquisition processing. The input / output state control is performed to control the input / output state of the power to each of the power devices based on the power specification information of each of the power devices acquired in (1).
That is, the power relay method according to the present invention is a method suitably executed by the above-described power relay device according to the present invention, and the same operational effects can be exhibited by the execution.

  A second characteristic configuration of the power relay apparatus according to the present invention includes, in addition to the first characteristic configuration, a power system connection unit that is connected to a commercial power system and transmits and receives power from the power bus to the commercial power system. It is in the point prepared.

  According to the second characteristic configuration, when the power system connection unit is provided, the power to be supplied from the power bus to the power device that receives power is higher than the power that can be supplied from the power device that supplies power to the power bus. Can supply the shortage of power from the commercial power system to the power bus, so that sufficient power can be supplied to the power equipment that receives power. Conversely, if the power to be supplied from the power bus to the power equipment that receives power is less than the power that can be supplied from the power equipment that supplies power to the power bus, the excess power is transmitted from the power bus to the commercial power system. Therefore, it is possible to sell the surplus power of the power equipment that supplies power to the outside of the power company or the like.

According to a third characteristic configuration of the power relay apparatus according to the present invention, in addition to any one of the first to second characteristic configurations described above, each of the plurality of device connection units supplies power to the power device. Has an intermittent switch that can intermittently
The input / output state control means executes, as the input / output state control, switch control for operating the intermittent switch to control the intermittent state of input / output of power to the power device.

According to the third characteristic configuration, the intermittent switch is provided in each of the plurality of device connection units, and the switch control is executed by the input / output state control unit, whereby an electrical connection line is connected to the device connection unit. When the power specification information of the power equipment is confirmed and it is determined that power can be exchanged in an appropriate state according to the power specification information, the intermittent switch is closed (the power flow is allowed). In this way, power can be transferred to the power device accurately and safely.
Conversely, when it is determined that power cannot be exchanged in an appropriate state according to the power specification information of the power device, the intermittent switch is operated so as to be turned off, and the power device is inappropriate. Electric power can be prevented from being transferred.

According to a fourth characteristic configuration of the power relay apparatus according to the present invention, in addition to any of the first to third characteristic configurations, each of the plurality of device connection units is exchanged with the power device. A voltage adjustment unit that can adjust the voltage of the power to be
The input / output state control means executes, as the input / output state control, voltage control for controlling the voltage of power input / output to / from the power device by operating the voltage adjusting unit.

  According to the fourth feature configuration, the voltage adjustment unit is provided in each of the plurality of device connection units, and the voltage control is executed by the input / output state control unit, thereby connecting the electrical connection line to the device connection unit. It is possible to check the power specification information of the power device, and to control the voltage of power input / output to / from the power device to an appropriate one that matches the power specification information.

  According to a fifth characteristic configuration of the power relay apparatus according to the present invention, in addition to any of the first to fourth characteristic configurations described above, an electrical connection line of an AC power consuming device that consumes AC power is detachable and electrically connected. And an AC device connecting portion having an AC connection line for supplying the AC power to the AC power consuming device. In the point.

  According to the fifth characteristic configuration, when each of the plurality of device connection units is configured to exchange DC power with the power device, the AC device connection unit is separated from the device connection unit. By connecting the electrical connection line of a general AC power consuming device that consumes AC power to the AC device connecting portion, AC power is supplied to such AC power consuming device through the AC device connecting portion. Can be supplied.

According to a sixth characteristic configuration of the power relay apparatus according to the present invention, in addition to any one of the first to fifth characteristic configurations, each of the plurality of device connection units supplies DC power flowing through the power bus. A DC connection line for transmitting / receiving to / from power equipment, and a cross-flow converter for converting DC power flowing in the power bus to AC power are provided, and the AC power is supplied / received to / from the power equipment. Having an AC connection line, and having a changeover switch capable of switching between DC power and AC power to be exchanged between the DC connection line and the AC connection line with the power device,
The input / output state control means executes the cross flow switching control for controlling the operation of the changeover switch as the input / output state control.

  According to the sixth characteristic configuration, when each of the plurality of device connection units is configured to exchange DC power with the power device, the AC connection is made to each of the plurality of device connection units. Line and the change-over switch, and the cross-flow switching control is executed by the input / output state control means. Recognizing whether the power to be supplied is direct current power or alternating current power, and controlling the operation of the changeover switch so as to exchange DC power or alternating current power appropriately, AC power can be exchanged accurately and safely.

According to a seventh characteristic configuration of the power relay apparatus according to the present invention, in addition to any of the first to sixth characteristic configurations described above, each of the plurality of device connection units connects an electric connection line of the power device. And a communication means capable of communicating between the electric power equipment connected to the electrical connection line,
The power specification information in a form in which the power specification information acquisition unit receives the power specification information from the power device by the communication unit when the connection detection unit detects the connection of the electrical connection line of the power device. The acquisition process is executed.

  According to the seventh characteristic configuration, when the connection detection unit detects the connection of the electrical connection line of the power device, the power specification information acquisition unit executes the power specification information acquisition process using the communication unit. Then, by receiving the power specification information from each power device connected to the plurality of device connection units, the power specification information of each power device can be acquired automatically and reliably.

In addition, a power device according to the present invention for achieving the above object has an electrical connection line connected to a device connection part of the power relay apparatus having the seventh characteristic configuration, and performs at least one of power feeding and power receiving. A power device for transmitting and receiving power to and from the power relay device, the characteristic configuration of which includes communication means capable of communicating with the power relay device connected to the electrical connection line,
The communication means includes power specification information transmission means for transmitting the power specification information stored in advance to the power relay apparatus connected to the electrical connection line.

  That is, according to the characteristic configuration of the power device, the power unit includes the communication unit and the power specification information transmission unit, and transmits the power specification information stored in advance to the power relay apparatus connected to the electrical connection line. Like the power relay device of the seventh feature configuration described above, the power relay device connected to the electrical connection line of the power device receives power specification information from the power device and automatically and reliably connects a plurality of devices. The power specification information of each power device connected to the unit can be acquired.

According to an eighth characteristic configuration of the power relay apparatus according to the present invention, in addition to any one of the first to seventh characteristic configurations, a power device in which each of the plurality of device connection portions is connected to the electrical connection line. Communication means capable of communicating with
The input / output state control means transmits, as the input / output state control, an input / output state control command for controlling the input / output state of power by each of the power devices to the respective power devices by the communication means. The command transmission control is executed.

  According to the eighth characteristic configuration, the input / output state control unit executes the command transmission control using the communication unit, and performs the input to each power device connected to a plurality of device connection units. By transmitting the output state control command, the power input / output state is controlled automatically and reliably based on the input / output state control command for each power device, and the power input / output state is set. It is possible to control to an appropriate one according to the power specifications of each of the power devices.

In order to achieve the above object, a power device according to the present invention has an electrical connection line connected to the device connection portion of the power relay apparatus having the above eighth characteristic configuration, and performs at least one of power feeding and power receiving. A power device for transmitting and receiving power to and from the power relay device, the characteristic configuration of which includes communication means capable of communicating with the power relay device connected to the electrical connection line,
According to the input / output state control command received from the power relay device by the communication means, an operation control unit that controls the input / output state of power is provided.

  That is, according to the characteristic configuration of the power device, the power relay device including the communication unit and the operation control unit, and connected to the electrical connection line of the power device, like the power relay device of the eighth characteristic configuration described above. The input / output state control command can be received from the control unit, and the input / output state of the power can be controlled to an appropriate one according to the power specification of the user in accordance with the received input / output state control command.

[First Embodiment]
1st Embodiment of the power relay apparatus and power equipment which concern on this invention is described based on FIGS. 1-3.
FIG. 1 shows a state in which a plurality of power devices 40 that perform at least one of feeding and receiving power are connected to the power relay device 1, and DC power is exchanged between the power relay device 1 and each power device 40. The schematic structure of the power relay apparatus 1 and the electric power equipment 40 is shown.
That is, the power relay apparatus 1 is configured to connect a plurality of power devices 40 and exchange DC power with each of the power devices 40, while each power device 40 has its power It has an electrical connection line 44 connected to the device connection unit 10 of the relay device 1, and is configured to perform at least one of power feeding and power receiving and to exchange DC power with the power relay device 1. Yes. The detailed configurations of the power relay apparatus 1 and the power device 40 will be described.

(Power relay device)
In the power relay apparatus 1, a plurality of device connection units 10 to which the electrical connection lines 44 of the power device 40 are detachably electrically connected are electrically connected to each other, and DC power flows. A power bus 2 and a relay control unit 3 that includes a computer and performs various processes are integrally provided.

  Each of the plurality of device connection portions 10 includes a socket 18 into which a plug 45 provided at the tip of the electric connection line 44 of the power device 40 is inserted. Moreover, the shape and structure of all the apparatus connection parts 10 are comprised, for example as a standardized common thing.

  Each of the device connection portions 10 is provided with a DC connection line 11 constituted by a power line for transmitting / receiving DC power flowing through the power bus 2 to / from the power device 40. A proximity sensor 19 that functions as a connection detection unit that detects the connection of the electrical connection line 44 and a communication unit 20 that functions as a communication unit that can communicate with the power device 40 connected to the electrical connection line 44 are provided. Yes. In the present embodiment, the proximity sensor 19 is employed as the connection detection means. However, another form of connection detection means such as a switch that is turned on and off by insertion / removal of the plug 45 with respect to the socket 18 is employed. It doesn't matter.

The DC connection line 11 is provided with an intermittent switch 14 that can intermittently exchange DC power with the power device 40. And the relay control part 3 can switch the state of the intermittent switch 14 to an open state (state which prohibits the flow of electric power) and a closed state (state which accept | permits the flow of electric power).
In addition, on the socket 18 side of the intermittent switch 14, a voltage measuring unit 16 that measures the voltage of the DC power exchanged with the power device 40 is provided, and the measurement result of the voltage measuring unit 16 is relayed. It is output to the control unit 3.

  The proximity sensor 19 functioning as the connection detection means is provided in the socket 18 and is configured to output a predetermined signal to the relay control unit 3 when the plug with the plug 45 inserted into the socket 18 approaches. Has been. And the relay control part 3 can recognize the connection of the electrical connection line 44 of the electric power apparatus 40 by reception of the signal.

  The communication unit 20 that functions as the communication unit performs power line communication (reception and transmission of signals through a power line including the electrical connection line 44 and the like) with a similar communication unit 48 provided on the power device 40 side. PLC) type communication means. The relay control unit 3 can transmit a predetermined signal to the power device 40 side or receive a predetermined signal from the power device 40 side by the communication unit 20. In the present application, transmission and reception of various information and the like through the communication unit 20 by the power relay device 1 may be simply referred to as transmission and reception. In the present embodiment, the PLC type communication means is employed, but other forms of communication means such as wireless communication and infrared communication may be employed.

  The relay control unit 3 executes a predetermined computer program by a computer, which will be described in detail later, but executes power specification information acquisition means 3A for executing power specification information acquisition processing and input / output state control. It is configured to function as the input / output state control means 3B.

The power specification information acquisition means 3A that the relay control unit 3 functions is a power specification that acquires power specification information related to the supplied power or the received power of each power device 40 in which the electrical connection line 44 is connected to the plurality of device connection units 10. An information acquisition process is executed.
As the power specification information of the power device 40 in the first embodiment, the power device 40 is a generator that only supplies DC power, or alternatively, DC power supply and reception are performed. The power specification such as the storage battery or the power load that receives only DC power, and the power specifications such as the rated voltage value and the rated power value of the DC power handled by the power device 40 are obtained from the above power specification information. It is acquired by means 3A.
Further, the power specification information acquisition unit 3A transmits a specification information transmission command to the power device 40 when the proximity sensor 19 detects the connection of the electrical connection line 44 of the power device 40, and the power The power specification information acquisition process is executed in a form in which the power specification information is received from the device 40.

  The input / output state control unit 3B that functions as the relay control unit 3 inputs and outputs power to each of the power devices 40 based on the power specification information of each power device 40 acquired by the above-described power specification information acquisition unit 3A. It is configured to execute input / output state control for controlling the state.

  Specifically, the input / output state control means 3B performs, as the input / output state control, switch control for controlling the intermittent state of power input / output to / from the power device 40, and the power devices 40 themselves turn on power. It is comprised so that the command transmission control which transmits the input / output state control command for controlling an output state to each electric power apparatus 40 may be performed, and the specific structure of these input / output state control is demonstrated below.

In the switch control, the input / output state control unit 3B switches the state of the intermittent switch 14 based on the power specification information acquired by the power specification information acquisition unit 3A.
That is, the input / output state control unit 3B refers to the power specification information of the power device 40 connected to the device connection unit 10, and the DC power of the rated voltage that the power device 40 is handled by the power relay device 1 is referred to. Only when it is determined whether or not it can be transmitted and received, the intermittent switch 14 is closed only when it is determined that it can be performed, and transmission and reception of DC power to and from the power device 40 can be started.

In addition, the input / output state control unit 3B determines that the power device 40 itself is in an input / output state of power based on the power specification information of the power device 40 acquired by the power specification information acquisition unit 3A described above in the command transmission control. That is, a power supply / reception state for whether the power device 40 supplies power or receives power and a DC voltage to be supplied or received by the power device 40 are determined, and an input / output state control command capable of recognizing the input / output state is generated.
Then, the input / output state control unit 3B transmits the generated input / output state control command to the power device 40, which will be described later in detail, but the power device 40 is based on the received input / output state control command. Thus, the input / output state of its own power can be controlled to an appropriate one according to its own power specifications.

The power relay apparatus 1 is provided with a power system connection unit 4 that is connected to the commercial power system 60 and transmits and receives power from the power bus 2 to the commercial power system 60. The AC power received from the commercial power system 60 is converted to DC power by the ACDC converter 5 and supplied to the power bus 2, or the DC power of the power bus 2 is converted to AC power via the ACDC converter 5 to be commercial power. Power can be transmitted to the grid 60.
If the power to be supplied from the power bus 2 to the power device 40 that receives power exceeds the power that can be supplied from the power device 40 that supplies power to the power bus 2 by the power system connection unit 4, the shortage Is supplied from the commercial power grid 60 to the power bus 2. Conversely, if the power to be supplied from the power bus 2 to the power device 40 that receives power is lower than the power that can be supplied from the power device 40 that supplies power to the power bus 2, the excess power is transferred from the power bus 2. Power is transmitted to the commercial power system 60.

The power relay device 1 is provided with an AC device connection unit 30 to which an electrical connection line 54 of a general AC power consumption device 50 that consumes AC power received from the commercial power system 60 is detachably connected. ing.
This AC device connection unit 30 has a socket 38 into which a plug 55 provided at the tip of the electric connection line 54 of the AC power consumption device 50 is inserted, and the electric connection line 54 of the AC power consumption device 50 is detachably connected to the electric power connection device 30. It is comprised as a site | part connected electrically. Further, the shape and structure of the AC device connection unit 30 are configured in common with, for example, a socket for receiving AC power directly from the commercial power system 60.
Further, the AC device connection unit 30 includes a DCAC converter 33 that is a cross-flow conversion unit that converts DC power flowing in the power bus 2 into AC power, and AC power that is converted by the DCAC converter 33 is AC power consuming device 50. And an AC connection line 32 which is a power line for supplying to the power supply.
By providing such an AC device connection unit 30, AC power can be supplied to a general AC power consuming device 50 that consumes AC power.

(Power equipment)
The plurality of power devices 40 are devices that perform at least one of feeding and receiving DC power, and are detachably electrically connected to the power supply / reception unit 43 that performs at least one of feeding and receiving and the power relay device 1. The electric connection line 44 for inputting / outputting electric power to / from the power supply / reception unit 43, and the device control unit 47, which includes a computer and performs various processes, are integrally provided.
In the present embodiment, as the plurality of power devices 40, the power supply / reception unit 43 includes a power generation device 40 </ b> A including a generator 43 </ b> A that performs only power generation (power supply), and the power supply / reception unit 43 includes discharge (power supply) and power storage (power reception). ) And a power consuming device 40 </ b> C having a power load 43 </ b> C that performs only power reception as the power supply / reception unit 43 are the respective device connection units 10 of the power relay device 1 described above. It is connected to the.

The electrical connection line 44 includes an intermittent switch 41 capable of intermittently inputting / outputting DC power to / from the power receiving / receiving unit 43 and a voltage of DC power input / output to / from the power receiving / receiving unit 43 (hereinafter referred to as “input / output voltage”). A DCDC converter 42 that is a voltage adjusting unit that adjusts and a communication unit 48 that functions as a communication unit capable of communicating with the power relay apparatus 1 connected to the electrical connection line 44. .
That is, the communication unit 48 functioning as the communication unit performs reception and transmission of signals with a similar communication unit 20 provided on the power relay apparatus 1 side via a power line including the electrical connection line 44 and the like. It is configured as a power line communication (PLC) type communication means. The power device 40 can transmit a predetermined signal to the power relay device 1 side or receive a predetermined signal from the power relay device 1 side by the communication unit 48. In the present application, transmission and reception of various information and the like through the communication unit 48 by the power device 40 may be simply referred to as transmission and reception.

The device control unit 47 is configured to function as a power specification information transmitting unit 47A and an operation control unit 47B, as will be described in detail later, by executing a predetermined computer program by a computer.
The power specification information transmitting unit 47A that functions as the device control unit 47 functions in accordance with the specification information transmission command received from the power relay device 1, and stores the power specification information related to its own power supply or received power stored in advance. It is configured to transmit to one side.

  Further, the operation control means 47B in which the device control unit 47 functions, when receiving a predetermined input / output state control command from the relay control unit 3 of the power relay apparatus 1, the input / output state of the power to the own power device 40 Various controls by the operation control means 47B will be described below.

  When the operation control means 47B receives a predetermined input / output state control command from the relay control unit 3 of the power relay device 1, the operation control means 47B assumes that the power relay device 1 is permitted to transfer power and opens the intermittent switch 41. Switching from (a state in which power flow is prohibited) to a closed state (a state in which power flow is allowed) to start power supply or reception by the power supply / reception unit 43, and an intermittent state of input / output of power to the power device 40 Is configured to control.

  In addition, when the operation control unit 47B receives a predetermined input / output state control command from the relay control unit 3 of the power relay apparatus 1, whether or not the operation control unit 47B should supply or receive power from the input / output state control command, The DC voltage to be supplied or received is recognized, and the voltage of the DCDC converter 42 for controlling the input / output state of power and the operation of the power supply / reception unit 43 are controlled accordingly.

  Specifically, when the operation control unit 47B of the power generation device 40A receives a power supply command indicating that power should be supplied at the rated voltage of the power relay device 1 as the input / output state control command, the operation control unit 47B operates the generator 43A to generate DC power. The DC power generated is converted into a rated voltage by the DCDC converter 42, and a so-called power feeding operation is performed in which the DC power of the rated voltage is supplied to the power relay device 1 side. Yes.

  Further, when the operation control means 47B of the storage / discharge device 40B receives a power supply command indicating that power should be supplied at a rated voltage from the power relay device 1 as the input / output state control command, the DCDC converter 42 causes the DC power on the storage battery 43B side to be supplied. Is set to be slightly higher than the rated voltage, so that the storage battery 43B is discharged with DC power, and the DC DC converter 42 converts the DC power into DC power of the rated voltage. It is configured to perform a so-called discharge operation in which DC power is supplied to the power relay device 1 side. Further, when the operation control means 47B receives a power reception command indicating that it should receive power at the rated voltage from the power relay device 1 as the input / output state control command, the DCDC converter 42 converts the voltage of the DC power on the storage battery 43B side into By setting the power slightly lower than the rated voltage, the DC power of the rated voltage received from the power relay device 1 side is converted to DC power lower than the rated voltage by the DCDC converter 42, and the DC power is stored in the storage battery. It is configured to perform a so-called power storage operation for storing power in 43B.

  In addition, when the operation control means 47B of the power consuming device 40C receives a power reception command indicating that it should receive power from the power relay device 1 at the rated voltage as the input / output state control command, the power load 43C is activated to consume the DC power. The DC power voltage received from the power relay device 1 is converted into a predetermined voltage by the DCDC converter 42, and so-called power consumption operation is performed in which the DC power is supplied to the power load 43C. .

  The above is the configuration of the power relay device 1 and the power device 40. Hereinafter, after connecting the plurality of power devices 40 to the plurality of device connection units 10 of the power relay device 1, the power relay device 1 and each of the power relay devices 1 and 40 are connected. Each processing flow executed by the power device 40 will be described.

First, a processing flow executed by the relay control unit 3 of the power relay apparatus 1 will be described with reference to FIG.
The relay control unit 3 of the power relay apparatus 1 is configured such that the electrical connection line 44 of the power device 40 is connected to the device connection unit while the intermittent switch 14 is held open in each device connection unit 10 (step # 10). 10 is determined by the output of the proximity sensor 19 (step # 11).

When it is determined in step # 11 that the power specification information acquisition unit 3A that the relay control unit 3 functions is connected to each of the plurality of device connection units 10 connected to the electrical connection line 44, as described above. Power specification information acquisition processing (steps # 12 to # 14) for acquiring power specification information related to power supply power or power reception power of the power device 40 is executed.
That is, the power specification information acquisition unit 3A transmits a predetermined specification information transmission command to the power device 40 connected to the device connection unit 10 (step # 12). Then, when receiving the specification information transmission command, the device control unit 47 of the power device 40 transmits the power specification information relating to the power supply power or the received power stored in advance to the power relay device 1. .
Therefore, the power specification information acquisition unit 3A receives the power specification information from the power device 40 (step # 13), and associates the received power specification information with each device connection unit 10 to store the data (not shown). (Step # 14).

  Next, the power specification of each power device 40 acquired by the input / output state control means 3B functioning as the relay control unit 3 and stored in association with each device connection unit 10 in the power specification information acquisition process. Based on the information, as input / output state control for controlling the input / output state of power to each power device 40, the intermittent switch 14 is closed (step # 15) as in the switch control described above, and the power device 40. Allows DC power to be transferred to and from.

Further, the input / output state control means 3B, after the voltage of the DC power exchanged with the power device 40 measured by the voltage measuring unit 16 becomes a predetermined rated voltage (step # 16). As the input / output state control, each power device 40 itself transmits an input / output state control command for controlling the power input / output state to each power device 40 as in the command transmission control described above. Command transmission control (step # 17) is executed.
Therefore, the relay control unit 3 executes the power specification information acquisition process and the input / output state control, so that the power device 40 having a different power specification or the like can be freely set for each of the device connection units 10. They can be connected, and power can be exchanged appropriately with each of the connected power devices 40.

  Further, when the relay control unit 3 determines that the connection of the electrical connection line 44 of the power device 40 to the device connection unit 10 is released based on the output of the proximity sensor 19 (step # 18), the relay control unit 3 opens the intermittent switch 14 ( Step # 19), power transfer to the power device 40 is stopped.

Next, a processing flow executed by the power device 40 in which the electrical connection line 44 is connected to the device connection unit 10 of the power relay apparatus 1 will be described with reference to FIG.
When the device controller 47 of the power device 40 receives the specification information transmission command from the power relay apparatus 1 (step # 21) with the intermittent switch 41 held open (step # 20), as described above. In addition, the power specification information transmitting means 47A transmits the power specification information stored in advance in the storage unit (not shown) to the power relay apparatus 1 (step # 22).

  Next, when the input / output state control command is received from the power relay apparatus 1 (step # 23), as described above, the operation control means 47B closes the intermittent switch 41 (step # 24), and the received power generation Input / output of DC power to the unit 43 is started. Further, the operation control means 47B operates the DCDC converter 42 to control the input / output voltage of the DC power to the power supply / reception unit 43 (step # 25), and when it is the power generation device 40A, performs the power supply operation, Alternatively, in the case of the storage / discharge device 40B, switching between the discharge operation and the storage operation is performed, or in the case of the power consumption device 40C, the power consumption operation is performed.

In addition, when receiving a stop command from the power relay device 1 (step # 26), the device control unit 47 opens the intermittent switch 41 (step # 27) and stops the input / output of DC power to the power supply / reception unit 43. To do.
Therefore, the power device 40 inputs and outputs power to and from the power supply / reception unit 43 in an appropriate state in accordance with the instructions of the relay control unit 3, so that the input / output state is determined based on the power specifications of the device and the overall power supply and reception. It can be appropriate to suit the balance.

[Second Embodiment]
A second embodiment of the power relay apparatus and power device according to the present invention will be described with reference to FIG. Note that description of the same configuration as in the first embodiment may be omitted.
In FIG. 4, a plurality of power devices 40 that perform at least one of power feeding and power receiving are connected to the power relay device 1, and DC power or AC power is exchanged between the power relay device 1 and each power device 40. 2 shows a schematic configuration of the power relay device 1 and the power device 40 in a state.
That is, the power relay apparatus 1 is configured to connect a plurality of power devices 40 and exchange DC power or AC power with each of the power devices 40, while each power device 40 is The electric connection line 44 connected to the device connection unit 10 of the power relay device 1 is provided, and power is fed or received, and direct current power or alternating current power is exchanged with the power relay device 1. It is configured. The detailed configurations of the power relay apparatus 1 and the power device 40 will be described.

(Power relay device)
In the power relay apparatus 1, a plurality of device connection units 10 to which the electrical connection lines 44 of the power device 40 are detachably electrically connected are electrically connected to each other, and DC power flows. A power bus 2 and a relay control unit 3 that includes a computer and performs various processes are integrally provided.

  Each of the plurality of device connection portions 10 has a socket 18 as in the first embodiment, and the shape and structure of all the device connection portions 10 are configured as standardized common things, for example. ing.

  Each of the device connection units 10 includes a DC connection line 11 constituted by a power line for transmitting and receiving DC power flowing through the power bus 2 to and from the power device 40, and DC power flowing through the power bus 2 as power equipment. And a DCAC converter 13 that is a cross-flow converter that converts the DC power flowing through the power bus 2 into AC power having a rated frequency is provided. An AC connection line 12 for transmitting and receiving electric power to and from the electric power device 40 is provided.

Furthermore, the device connection unit 10 is provided with a change-over switch 15 that can switch between the DC power line 11 and the AC power line 40 for the DC connection line 11 and the AC connection line 12 between DC power and AC power. Yes. And the relay control part 3 changes the state of the changeover switch 15 into the direct current power distribution state which permits the flow of direct current power by the direct current connection line 11, and the alternating current power distribution state which permits the flow of alternating current power by the alternating current connection line 12. Can be switched to.
In addition, on the socket 18 side of the changeover switch 15, a voltage measuring unit 16 that measures the voltage of DC power exchanged with the power device 40 is provided, and the measurement result of the voltage measuring unit 16 is relayed. It is output to the control unit 3.

Further, the device connecting unit 10 is provided with a DCDC converter 21 that is a voltage adjusting unit capable of adjusting a voltage of power input / output to / from the power device 40 (hereinafter referred to as “input / output voltage”). ing.
That is, the DCDC converter 21 converts the DC power of the rated voltage supplied from the DC bus 2 into an arbitrary voltage and supplies it to the DC connection line 11 or the DC side of the DCAC converter 13, or the DC connection line 11 or A DC power of an arbitrary voltage supplied from the DC side of the DCAC converter 13 is converted into a rated voltage and supplied to the DC bus 2.

  Further, the device connection unit 10 is provided with a proximity sensor 19 that functions as a connection detection unit and a communication unit 20 that functions as a communication unit, as in the first embodiment.

  As in the first embodiment, the relay control unit 3 functions as a power specification information acquisition unit 3A that executes power specification information acquisition processing and an input / output state control unit 3B that executes input / output state control. It is configured.

The power specification information acquisition means 3A that the relay control unit 3 functions is a power specification that acquires power specification information related to the supplied power or the received power of each power device 40 in which the electrical connection line 44 is connected to the plurality of device connection units 10. An information acquisition process is executed.
In addition, as the power specification information of the power device 40 in the second embodiment, the power form relating to whether the power supplied or received by the power device 40 is DC power or AC power, the power device 40 The power supply / reception specifications regarding whether the generator is a generator, a storage battery, or a power load, the power specifications such as the rated voltage value and the rated power value of DC power or AC power handled by the power device 40, etc. It is acquired by the power specification information acquisition means 3A.

  The input / output state control unit 3B that functions as the relay control unit 3 inputs and outputs power to each of the power devices 40 based on the power specification information of each power device 40 acquired by the above-described power specification information acquisition unit 3A. It is configured to execute input / output state control for controlling the state.

  Specifically, the input / output state control means 3B, as the input / output state control, controls the operation of the changeover switch 15 to switch between a DC power distribution state and an AC power distribution state, and Voltage control for controlling the voltage of power input / output to / from the power device 40 by operating the DCDC converter 21 and input / output state control commands for controlling the power input / output state of each power device 40 itself are provided. It is comprised so that the command transmission control transmitted to the electric power apparatus 40 may be performed, and the specific structure of these input / output state control is demonstrated below.

The input / output state control means 3B switches the state of the changeover switch 15 based on the power specification information acquired by the power specification information acquisition means 3A described above in the cross flow switching control.
That is, the input / output state control unit 3B refers to the power specification information of the power device 40 connected to the device connection unit 10, and the power supplied or received by the power device 40 is DC power or AC power. Is recognized, and the state of the changeover switch 15 is switched between the DC power distribution state and the AC power distribution state accordingly, and exchange of DC power or AC power with the power device 40 is started. be able to.

  In addition, the input / output state control unit 3B determines the voltage of power to be input / output to / from the power device 40 based on the power specification information of the power device 40 acquired by the power specification information acquisition unit 3A described above in the voltage control. And the DCDC converter 21 is operated in accordance with the voltage to control the input / output voltage measured by the voltage measuring unit 16.

In addition, the input / output state control unit 3B determines that the power device 40 itself is in the input / output state of power based on the power specification information of the power device 40 acquired by the power specification information acquisition unit 3A described above in the command transmission control. That is, the power supply / reception state of whether the power device 40 supplies power or receives power is determined, and an input / output state control command capable of recognizing the input / output state is generated.
Then, the input / output state control means 3B transmits the generated input / output state control command to the power device 40, which will be described in detail later, but the power device 40 is based on the received input / output state control command. Thus, the input / output state of its own power can be controlled to an appropriate one according to its own power specifications.

As in the first embodiment, the power relay apparatus 1 is provided with a power system connection unit 4 that transmits and receives power from the power bus 2 to the commercial power system 60. What is the first embodiment? In contrast, the AC device connection unit 30 is not provided.
That is, with respect to a general AC power consuming device that consumes AC power received from the commercial power system 60, its electrical connection line is inserted into the socket 18 of the device connection unit 10 described above, and the changeover switch 15 is connected to AC power distribution. If it is set as a state, predetermined | prescribed alternating current power can be supplied also to the said alternating current power consumption apparatus.

(Power equipment)
The plurality of power devices 40 are devices that perform at least one of feeding and receiving of direct-current power or alternating-current power. Similarly to the first embodiment, the power supply / reception unit 43, the electrical connection line 44, and the device control unit 47 etc. are provided integrally.
In the present embodiment, as the plurality of power devices 40, the power generation device 40A, the storage / discharge device 40B, and the power consumption device 40C are connected to each of the plurality of device connection units 10 of the power relay device 1 described above. ing.

  Further, in the second embodiment, as the storage / discharge device 40B, the DC power stored and discharged by the storage battery 43B is converted into AC power by the inverter 49, and the AC power is exchanged with the power relay device 1 in the form of AC. The power storage / discharge device 40B-1 and the DC power storage / discharge device 40B-2 in a form in which DC power stored / discharged by the storage battery 43B is directly transferred to / from the power relay device 1 are connected to each of the device connection units 10. Has been.

  Similarly to the first embodiment, the electrical connection line 44 of each power device 40 includes an intermittent switch 41 capable of intermittently inputting / outputting power to / from the power supply / reception unit 43 and a communication unit 48 functioning as a communication means. Is provided.

  As in the first embodiment, the device control unit 47 is configured to function as a power specification information transmission unit 47A and an operation control unit 47B. Various controls by the operation control unit 47B will be described below. explain.

  When the operation control means 47B receives a predetermined input / output state control command from the relay control unit 3 of the power relay device 1, the operation control means 47B assumes that the power relay device 1 is permitted to transfer power and opens the intermittent switch 41. Switching from (a state in which power flow is prohibited) to a closed state (a state in which power flow is allowed) to start power supply or reception by the power supply / reception unit 43, and an intermittent state of input / output of power to the power device 40 Is configured to control.

  In addition, when the operation control unit 47B receives a predetermined input / output state control command from the relay control unit 3 of the power relay apparatus 1, whether or not the operation control unit 47B should supply or receive power from the input / output state control command, The system is configured to recognize the DC voltage to be fed or received and to control the operation of the power supply / reception unit 43 that controls the input / output state of power according to the DC voltage.

  Specifically, when the operation control unit 47B of the power generation device 40A receives a power supply command indicating that the power relay apparatus 1 should supply power as the input / output state control command, the operation control unit 47B operates the generator 43A to generate DC power or AC power. The power generation operation is performed, and so-called power feeding operation is performed in which the DC power or AC power is supplied to the power relay device 1 side.

  When the operation control means 47B of the AC power storage / discharge device 40B-1 receives a power supply command indicating that power should be supplied from the power relay device 1 as the input / output state control command, the inverter 49 causes the DC power on the storage battery 43B side to be supplied. Is set to be slightly higher than the rated voltage, so that the storage battery 43B is discharged with DC power, and the inverter 49 converts the DC power into AC power with the rated frequency. A so-called discharge operation is performed in which power is supplied to the power relay device 1 side. Further, when the operation control means 47B receives a power reception command indicating that it should receive power at the rated voltage from the power relay device 1 as the input / output state control command, the inverter 49 converts the DC power voltage on the storage battery 43B side into the rated voltage. By setting the voltage slightly lower than the voltage, the inverter 49 converts the AC power having the rated frequency received from the power relay device 1 into DC power lower than the rated voltage, and the DC power is supplied to the storage battery 43B. It is configured to perform a so-called power storage operation for storing power.

  In the DC power storage / discharge device 40B-2, the operation control unit 47B does not switch between the discharge operation and the power storage operation, but the input / output state control unit 3B of the power relay device 1 is connected to the power relay device 1 side. The DC / DC converter 21 sets the DC power voltage on the DC power storage / discharge device 40B-2 side to be slightly higher than the rated voltage, thereby discharging the DC power to the storage battery 43B and relaying the DC power to the power relay. A so-called discharge operation is performed to supply the device 1 side, and conversely, the DC DC converter 21 on the power relay device 1 side sets the DC power voltage on the DC power storage / discharge device 40B-2 side to be slightly lower than the rated voltage. Thus, a so-called power storage operation is performed in which the DC power received from the power relay device 1 side is stored in the storage battery 43B.

  Further, when the operation control means 47B of the power consuming device 40C receives a power reception command indicating that the power relay apparatus 1 should receive power at the rated voltage as the input / output state control command, the power load 43C is activated to consume the DC power. And so-called power consumption operation for supplying DC power or AC power received from the power relay device 1 to the power load 43C.

  In the power relay device, the power device, and the power relay method according to the present invention, when appropriately transferring power to and from the plurality of power devices, the electrical connection lines of the plurality of power devices are electrically connected to each other. It is possible to freely connect power devices with different power specifications to each of the plurality of device connection sections. Furthermore, the power input / output state of each power device can be changed to the power specifications of the power device and the entire power supply. In addition, the present invention can be effectively used for a power relay device, a power device, and a power relay method that can be appropriate for the balance of power reception.

1 is a schematic configuration diagram of a power relay device and a power device according to a first embodiment. Process flow diagram executed by the power relay device Process flow diagram executed by power equipment Schematic configuration diagram of a power relay device and power equipment of a second embodiment

Explanation of symbols

1: power relay device 2: power bus 3A: power specification information acquisition unit 3B: input / output state control unit 4: power system connection unit 10: device connection unit 11: DC connection line 12: AC connection line 13: DCAC converter (direct AC converter)
14: Intermittent switch 15: Changeover switch 16: Voltage measuring unit 19: Proximity sensor (connection detection means)
20: Communication unit (communication means)
21: DCDC converter (voltage regulator)
30: AC device connection unit 32: AC connection line 33: DCAC converter (cross-flow conversion unit)
40: Power device 47A: Power specification information transmission means 47B: Operation control means 48: Communication unit (communication means)
50: AC power consumption device 60: Commercial power system

Claims (11)

A power relay device that is connected to a plurality of power devices that perform at least one of power feeding and power receiving, and that exchanges power with each of the power devices,
A plurality of device connection portions to which electrical connection lines of the power device are electrically connected in a detachable manner;
A power bus that electrically connects each of the plurality of device connections;
Power specification information acquisition means for executing power specification information acquisition processing for acquiring power specification information related to power supply power or power reception power of each power device connected to the plurality of device connection units with the electrical connection lines;
Input / output state control means for performing input / output state control for controlling the input / output state of power to each of the power devices based on the power specification information of the respective power devices acquired by the power specification information acquisition means. Power relay device.   The power relay apparatus according to claim 1, further comprising: a power system connection unit that is connected to a commercial power system and transmits / receives power to / from the commercial power system from the power bus. Each of the plurality of device connection units has an intermittent switch capable of intermittently transferring power to and from the power device,
The power according to claim 1 or 2, wherein the input / output state control means executes switch control for operating the intermittent switch to control an intermittent state of input / output of power to the power device as the input / output state control. Relay device. Each of the plurality of device connection units has a voltage adjustment unit capable of adjusting the voltage of power exchanged with the power device,
The input / output state control means executes voltage control for controlling a voltage of power input / output to / from the power device by operating the voltage adjusting unit as the input / output state control. The power relay device according to item.   An electrical connection line of an AC power consuming device that consumes AC power is detachably electrically connected, and a cross-flow conversion unit that converts DC power flowing in the power bus to AC power is provided, and the AC power is converted to the AC power. The electric power relay apparatus as described in any one of Claims 1-4 provided with the alternating current equipment connection part which has the alternating current connection line for supplying to consumer equipment. Each of the plurality of device connection units has a DC connection line for transmitting / receiving DC power flowing through the power bus to / from the power device, and a cross-flow conversion for converting DC power flowing through the power bus into AC power. And an AC connection line for transmitting and receiving the AC power to and from the power device, and DC power and the power to be transferred to and from the power device to the AC connection line as DC power. It has a selector switch that can be switched between AC power and
The power input / output device according to any one of claims 1 to 5, wherein the input / output state control means executes a cross flow switching control for controlling an operation of the changeover switch as the input / output state control. Each of the plurality of device connection units includes a connection detection unit that detects connection of an electrical connection line of the power device, and a communication unit that can communicate between the power device connected to the electrical connection line,
The power specification information in a form in which the power specification information acquisition unit receives the power specification information from the power device by the communication unit when the connection detection unit detects the connection of the electrical connection line of the power device. The power relay apparatus according to any one of claims 1 to 6, which executes an acquisition process. Each of the plurality of device connection units has a communication means capable of communicating with a power device connected to the electrical connection line,
The input / output state control means transmits, as the input / output state control, an input / output state control command for controlling the input / output state of power by each of the power devices to the respective power devices by the communication means. The power relay apparatus according to claim 1, wherein command transmission control is executed. A power device having an electrical connection line connected to the device connection portion of the power relay device according to claim 7, performing at least one of power feeding and power receiving and transferring power to and from the power relay device. There,
Comprising a communication means capable of communicating with a power relay apparatus connected to the electrical connection line;
A power device comprising power specification information transmitting means for transmitting the power specification information stored in advance to the power relay apparatus connected to the electrical connection line by the communication means. A power device having an electrical connection line connected to the device connection portion of the power relay device according to claim 8, performing at least one of power feeding and power receiving and transferring power to and from the power relay device. There,
Comprising a communication means capable of communicating with a power relay apparatus connected to the electrical connection line;
A power device comprising an operation control unit that controls an input / output state of power according to an input / output state control command received from the power relay device by the communication unit. A power relay method for transferring power between a plurality of power devices that perform at least one of power feeding and power receiving and a power relay device to which each of the power devices is connected,
The power relay device is provided with a plurality of device connection portions to which the electric connection lines of the power devices are detachably electrically connected, and a power bus for electrically connecting each of the plurality of device connection portions. Configure
A power specification information acquisition process in which the power relay apparatus acquires power specification information related to a power supply power or a power reception power of each of the power devices connected to the plurality of device connection units; and the power specification information acquisition processing. A power relay method for executing input / output state control for controlling an input / output state of power with respect to each of the power devices based on the power specification information of each of the power devices acquired in (1).

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