JP2009159733A - Power failure compensating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to decide whether even general equipment receives power while being fed from dispersed power sources by enabling the user to select the acceptance or rejection of feed from an outlet to the apparatus while being fed from the dispersed power sources. <P>SOLUTION: A DC power supply section 101 is equipped with dispersed power sources 20 which can backup the section 101 at stoppage of a main power source 10. A plurality of DC plug sockets 131, which connect AC apparatuses 102, are connected to a DC supply line Wdc. The DC power supply section 101 is equipped with a power failure detector 11, which communicates with the DC plug socket 131 and informs the DC plug socket 131 of stoppage when it detects the stoppage of the main power source 10. A power reception controller 131c controls the ON-OFF of a switch element 13a under conditions designated with a setter 131e, when the stoppage of the main power source 10 is informed from the power failure detector 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power failure compensation system provided with a distributed power source that backs up power supply in the event of a power failure in the main power source, in addition to a main power source that is supplied with power from an AC power source such as a commercial power source.

  Conventionally, various uninterruptible power supply devices have been provided in order to continue power supply to a load even when a main power source to which power is supplied from an AC power source such as a commercial power source is stopped. The uninterruptible power supply is configured to perform power supply backup using a distributed power source to which power is supplied by a secondary battery, a solar battery, or the like when an AC power source such as a commercial power source is stopped.

  This type of uninterruptible power supply enables backup of power supply to multiple loads and also has a configuration that limits the power supply time for each load based on the capacity and power consumption allocated to each load. It is considered (for example, refer to Patent Document 1).

In the configuration described in Patent Document 1, an uninterruptible power supply apparatus is disclosed in which a battery is used as a power source when a commercial power supply is interrupted and power is supplied to a plurality of information processing apparatuses. In this uninterruptible power supply, it is possible to supply power to a plurality of information processing devices through an AC cable and to instruct the information processing device to shut down through an interface cable different from the AC cable. Yes. Therefore, according to the capacity and power consumption allocated to each individual information processing device, it is possible to limit the time from the power failure of the commercial power supply to the shutdown of each information processing device.
JP 2002-189538 A

  By the way, the uninterruptible power supply described above employs a configuration in which power supply to the information processing apparatus is stopped by giving a shutdown instruction to the information processing apparatus through the interface cable, but the interface cable can be connected. In general devices that do not have a shutdown function according to a shutdown instruction, it is not possible to control whether or not power can be supplied to individual devices during a period in which power is supplied from the distributed power supply after the main power supply is stopped. Since the capacity of the distributed power supply is limited, it is required to supply power only to necessary equipment when power is supplied from the distributed power supply even when using a general device.

  The present invention has been made in view of the above reasons, and its purpose is to enable selection of whether or not power can be supplied to an outlet connected to a device when supplying power to the device with only a distributed power source provided separately from the main power source. To provide a power failure compensation system that enables a general device to select whether or not to receive power when power is supplied from a distributed power source, and consequently enables selection of a device to be supplied when the main power is stopped. It is in.

  According to the first aspect of the present invention, a device is electrically connected to a power supply unit including a distributed power source that can be backed up when the main power supply is stopped, and a power supply connection unit connected to the power supply unit via a power supply line. And a plurality of outlets having switch elements for selecting whether or not energization between the power supply connection portion and the device connection port is provided, and the power supply portion is communicable with the outlet and is connected to the main power source. It has a power failure detection unit that notifies the outlet when the stop of the power source is detected, and the outlet has a power reception control unit that controls on / off of the switch element according to a specified condition after the power failure detection unit is notified of the stop of the main power supply Features.

  According to a second aspect of the present invention, in the first aspect of the invention, the outlet includes a setting unit that selects on / off of the switch element when the main power supply is stopped, and the power reception control unit includes the power failure detection unit from the power failure detection unit. When the stop of the main power supply is notified, the on / off of the switch element is controlled according to the selection in the setting unit.

  According to a third aspect of the present invention, in the second aspect of the present invention, the setting unit sets a priority for continuing to turn on the switch element after the main power supply is stopped, and the power reception control unit is configured to perform the power failure detection unit. When the stop of the main power supply is notified, the switch element is controlled such that the higher the priority set in the setting unit is, the longer the switch element is kept on.

  According to a fourth aspect of the present invention, in the second or third aspect of the invention, the outlet includes a current detection unit that detects a current supplied to the device, and the setting unit is configured to stop the main power source from being stopped. The power reception control unit sets the current detected by the current detection unit in the setting unit when the power failure detection unit is notified of the stop of the main power supply. It is characterized in that the switch element is turned on when it is below the specified tolerance.

  In the invention of claim 5, in the invention of claim 2 or claim 3, the setting unit sets a time limit for continuously turning on the switch element after the main power supply is stopped, and the power reception control unit When the stop of the main power supply is notified from the power failure detection unit, the switch element is turned on until the time limit set in the setting unit.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, the management device includes a management device capable of communicating with the outlet, and the management device stores the device memory that defines on / off of the switch element for each outlet when the main power supply is stopped. And an operation designating unit for instructing each outlet to turn on / off the switch element according to the contents defined in the device storage unit when the power failure detection unit detects a stop of the main power supply, and the power reception control of each outlet. The unit controls on / off of the switch element in accordance with the instruction content from the operation designating unit.

  According to a seventh aspect of the present invention, in the sixth aspect of the present invention, the device storage unit is set with a priority for continuing to turn on the switch element after the main power supply is stopped, and the operation designating unit is configured to detect the power failure. When the unit detects the stop of the main power supply, the higher the priority set in the device storage unit is, the longer the switch element is turned on. To each outlet.

  According to an eighth aspect of the present invention, in the sixth or seventh aspect of the present invention, the outlet includes a current detection unit that detects a current supplied to the device, and the device storage unit stops the main power supply. The allowable value of the current value to be supplied to the device later is set, and the operation specifying unit sets the current detected by the current detection unit in the device storage unit when the power failure detection unit detects the stop of the main power supply The outlet is instructed to turn on the switch element when it is less than or equal to the permitted value.

  In the invention of claim 9, in the invention of claim 6 or claim 7, the device storage unit is set with a time limit for continuously turning on the switch element after the main power supply is stopped, and the operation specifying unit Is characterized by instructing the outlet to turn on the switch element until the time limit set in the device storage unit when the power failure detection unit detects the stop of the main power supply.

  According to a tenth aspect of the present invention, in any one of the first to ninth aspects, the power supply unit supplies direct current power, and the device is a direct current device driven by direct current power.

  According to the configuration of the invention of the first aspect of the present invention, it is possible to select whether or not to supply power at the outlet connecting the devices, so that even a general device without a communication function or the like can receive power from the distributed power supply when the main power supply is stopped. It is possible to select whether to receive power. That is, it is possible to select a device that supplies power when a main power supply is stopped for a general device.

  According to the second and sixth aspects of the invention, the outlet is provided with the setting unit for selecting whether the switch element is turned on or off when the main power supply is stopped. Therefore, the main power supply is stopped at each outlet. If only the notification is made, ON / OFF of the switch element is selected. That is, even when there are a large number of outlets, it is possible to notify the stop of the main power supply in a short time using broadcast communication or the like. In addition, since it is possible to specify on / off for each outlet, it is possible to directly see and understand devices that can be continuously operated when the main power supply is stopped.

  According to the third and seventh aspects of the invention, since the priority is defined for the outlet that continuously turns on the switch element after the main power supply is stopped, it is connected to the outlet that has been given a high priority. The existing equipment can be used for a long time even after the main power supply is stopped.

  According to the configuration of the inventions of claims 4 and 8, a relatively large number of devices can be used even after the main power supply is stopped by permitting the use if the current supplied to the devices after the main power supply is stopped is below an allowable value. Can be used.

  According to the configurations of the fifth and ninth aspects of the invention, the time limit for continuously turning on the switch element after the main power supply is stopped is set. Therefore, the time limit is set according to the necessary degree after the main power supply is stopped. By setting, necessary equipment can be used continuously for a relatively long time even after the main power supply is stopped.

  In the inventions of claims 6 to 9, since the management device instructs the outlet to turn on / off the switch element, when there are a plurality of outlets, it can be centrally managed in one place, and management is easy. In addition, the outlet only needs to have a function of communicating with the management apparatus and a function of controlling on / off of the switch element by a communication instruction, and has an advantage of simplifying the outlet configuration.

  According to the configuration of the invention of claim 10, since the device is a direct current, there is no need to convert it to alternating current power when a secondary battery or a solar battery is used as the distributed power source. Well, the configuration of the distributed power supply becomes simple.

  Although the embodiment described below is described assuming a detached house as a building to which the present invention is applied, it does not preclude applying the technical idea of the present invention to an apartment house. Further, it can be applied to buildings such as stores and office buildings in addition to houses.

  FIG. 3 shows the overall configuration of a power supply system to which this embodiment is applied. As shown in FIG. 3, the house H is provided with a DC power supply unit (power supply unit) 101 that outputs DC power, and a DC device (device) 102 as a load driven by DC power. DC power is supplied to the DC device 102 through the DC supply line Wdc connected to the output end of the power supply unit 101. A current flowing through the DC supply line Wdc is monitored between the DC power supply unit 101 and the DC device 102. When an abnormality is detected, power is supplied from the DC power supply unit 101 to the DC device 102 on the DC supply line Wdc. A DC breaker 114 is provided for limiting or blocking the current.

  The DC supply line Wdc is used as both a DC power supply path and a communication path, and is connected to the DC supply line Wdc by superimposing a communication signal for transmitting data on a DC voltage using a high-frequency carrier wave. Enables communication between devices. This technique is similar to a power line carrier technique in which a communication signal is superimposed on an AC voltage in a power line that supplies AC power.

  The DC supply line Wdc is connected to the home server 116 via the DC power supply unit 101. The in-home server 116 is a main device for constructing a home communication network (hereinafter referred to as “home network”), and communicates with a subsystem constructed by the DC device 102 in the home network.

  In the example shown in the drawing, as an subsystem, an illumination system comprising an information equipment system K101 comprising an information-system DC device 102 such as a personal computer, a wireless access point, a router, and an IP telephone, and an illumination system DC equipment 102 such as a lighting fixture. K102, K105, an intercom system K103 including a DC device 102 for handling visitors and monitoring intruders, a residential alarm system K104 including a DC device 102 for an alarm system such as a fire detector, and the like. Each subsystem constitutes a self-supporting distributed system, and can operate even with the subsystem alone.

  The above-described DC breaker 114 is provided in association with a subsystem. In the illustrated example, four DCs are associated with the information equipment system K101, the lighting system K102 and the intercom system K103, the house alarm system K104, and the lighting system K105. A breaker 114 is provided. When a plurality of subsystems are associated with one DC breaker 114, a connection box 121 for dividing the system of the DC supply line Wdc is provided for each subsystem. In the illustrated example, a connection box 121 is provided between the illumination system K102 and the intercom system K103.

  As the information equipment system K101, there is provided an information equipment system K101 composed of a DC equipment 102 connected to a DC outlet 131 arranged in advance in the house H (constructed when the house H is constructed) in the form of a wall outlet or a floor outlet. The DC outlet 131 can be connected to a DC apparatus 102 other than the information apparatus system K101, and the figure also shows a DC outlet 131 for connecting another DC apparatus 102.

  The lighting systems K102 and K105 include a lighting system K102 composed of a lighting device (DC device 102) arranged in advance in the house H and a lighting device (DC device 102) connected to a hook ceiling 132 arranged in advance on the ceiling. An illumination system K105 is provided. At the time of interior construction of the house H, the contractor attaches the lighting fixture to the hook ceiling 132, or the householder himself attaches the lighting fixture.

  In addition to using an infrared remote control device, a control instruction for the lighting apparatus that is the DC device 102 constituting the lighting system K102 can be given using a communication signal from the switch 141 connected to the DC supply line Wdc. That is, the switch 141 has a communication function together with the DC device 102. In addition, a control instruction may be given by a communication signal from another DC device 102 in the home network or the home server 116 regardless of the operation of the switch 141. The instructions to the lighting fixture include lighting, extinguishing, dimming, and blinking lighting.

  Since any DC device 102 can be connected to the DC outlet 131 and the hooking ceiling 132 described above and DC power is output to the connected DC device 102, the DC outlet 131 and the hooking ceiling 132 are distinguished below. When it is not necessary, it is called “DC outlet”.

  These DC outlets have a plug-in connection port into which a contact (not shown) provided directly on the DC device 102 or a contact (not shown) provided via a connection line is inserted into the body. The contact receiver that directly contacts the contact inserted into the connection port is held by the container. That is, the direct current outlet supplies power in a contact manner. When the DC device 102 connected to the DC outlet has a communication function, a communication signal can be transmitted through the DC supply line Wdc. A communication function is provided not only in the DC device 102 but also in the DC outlet.

  The home server 116 not only is connected to the home network, but also has a connection port connected to the wide area network NT that constructs the Internet. When the in-home server 116 is connected to the wide area network NT, it is possible to receive services from the center server 200 that is a computer server connected to the wide area network NT.

  The service provided by the center server 200 includes a service that enables monitoring and control of equipment (including mainly the DC equipment 102 but also other equipment having a communication function) connected to the home network through the wide area network NT. is there. This service makes it possible to monitor and control devices connected to the home network using a communication terminal (not shown) having a browser function such as a personal computer, Internet TV, or mobile phone.

  The in-home server 116 has both functions of communication with the center server 200 connected to the wide area network NT and communication with equipment connected to the home network, and identification information on equipment in the home network ( Here, it is assumed that an IP address is used).

  The home server 116 enables monitoring and control of home devices through the center server 200 from a communication terminal connected to the wide area network NT by using a communication function with the center server 200. The center server 200 mediates between home devices and communication terminals on the wide area network NT.

  When monitoring and controlling home devices from a communication terminal, monitoring and control requests are stored in the center server 200, and the home device periodically performs one-way polling communication to monitor from the communication terminal. And receive control requests. With this operation, it is possible to monitor and control devices in the house from the communication terminal.

  Further, when an event that should be notified to the communication terminal, such as a fire detection, occurs in the home device, the home device notifies the center server 200, and the center server 200 notifies the communication terminal by e-mail.

  An important function among the communication functions with the home network in the home server 116 is the detection and management of devices constituting the home network. The home server 116 automatically detects devices connected to the home network by applying UPnP (Universal Plug and Play). The home server 116 includes a display device 117 having a browser function, and displays a list of detected devices on the display device 117. The display device 117 has a configuration with a touch panel type or an operation unit, and can perform an operation of selecting desired contents from options displayed on the screen of the display device 117. Therefore, the user (contractor or householder) of the home server 116 can monitor or control the device on the screen of the display device 117. The display device 117 may be provided separately from the home server 116.

  The in-home server 116 manages information related to device connection, and grasps the type, function, and address of the device connected to the home network. Accordingly, the devices in the home network can be operated in conjunction with each other. Information on the connection of the device is automatically detected as described above. In order to operate the device in an interlocking manner, the device itself is automatically associated with the attribute held by the device itself, and the home server 116 is configured as a personal computer. It is also possible to connect various information terminals and use the browser function of the information terminals to associate devices.

  Each device holds the relationship of the interlocking operation of the devices. Therefore, the device can operate in an interlocked manner without passing through the home server 116. By associating the linked operations for each device, for example, by operating a switch that is a device, it is possible to turn on or off the lighting fixture that is the device. In many cases, the association of the interlocking operations is performed within the subsystem, but the association beyond the subsystem is also possible.

  By the way, the DC power supply unit 101 basically generates DC power by power conversion of an AC power supply AC supplied from outside the house like a commercial power supply. In the configuration shown in the figure, the AC power source AC is input to an AC / DC converter 112 including a switching power source through a main circuit breaker 111 attached to the distribution board 110 as an internal unit. The DC power output from the AC / DC converter 112 is connected to each DC breaker 114 through the cooperative control unit 113.

  The DC power supply unit 101 is provided with a secondary battery 162 in preparation for a period in which power is not supplied from the AC power supply AC (for example, a power failure period of the commercial power supply AC). It is also possible to use a solar cell 161 or a fuel cell 163 that generates DC power. The solar battery 161, the secondary battery 162, and the fuel battery 163 are distributed power supplies with respect to the main power supply including the AC / DC converter 112 that generates DC power from the AC power supply AC. In the illustrated example, the solar cell 161, the secondary battery 162, and the fuel cell 163 include a circuit unit that controls the output voltage, and the secondary battery 162 includes a circuit unit that controls charging as well as discharging.

  Of the distributed power sources, the solar cell 161 and the fuel cell 163 are not necessarily provided, but the secondary battery 162 is preferably provided. The secondary battery 162 is charged in a timely manner by a main power source or other distributed power source, and the secondary battery 162 is discharged not only in a period in which power is not supplied from the AC power source AC but also in a timely manner as necessary. The cooperation control unit 113 performs charge / discharge of the secondary battery 162 and cooperation between the main power source and the distributed power source. That is, the cooperative control unit 113 functions as a DC power control unit that controls the distribution of power from the main power supply and the distributed power supply constituting the DC power supply unit 101 to the DC devices 102. Note that a configuration may be adopted in which the outputs of the solar cell 161, the secondary battery 162, and the fuel cell 163 are converted into AC power and used as input power of the AC / DC converter 112.

  Since the driving voltage of the DC device 102 is selected from a plurality of types of voltages depending on the device, the cooperative control unit 113 is provided with a DC / DC converter to convert the DC voltage obtained from the main power source and the distributed power source into the necessary voltage. Is desirable. Normally, one type of voltage is supplied to one subsystem (or DC device 102 connected to one DC breaker 114), but three or more wires are used for one subsystem. A plurality of types of voltages may be supplied. Alternatively, it is possible to adopt a configuration in which the DC supply line Wdc is of a two-wire type and the voltage applied between the lines is changed with time. The DC / DC converter may be provided in a plurality of dispersed manners like the DC breaker.

  In the above configuration example, only one AC / DC converter 112 is illustrated, but a plurality of AC / DC converters 112 can be arranged in parallel, and when a plurality of AC / DC converters 112 are provided. It is desirable to increase or decrease the number of AC / DC converters 112 that are operated according to the magnitude of the load.

  The AC / DC converter 112, the cooperative control unit 113, the DC breaker 114, the solar cell 161, the secondary battery 162, and the fuel cell 163 described above are provided with a communication function, and include a main power source, a distributed power source, and a DC device 102. It is possible to perform cooperative operations that deal with the load status. The communication signal used for this communication is transmitted in the form of being superimposed on the DC voltage in the same manner as the communication signal used for the DC device 2.

  In the above example, the AC / DC converter 112 is arranged in the distribution board 110 in order to convert the AC power output from the main breaker 111 into DC power by the AC / DC converter 112. On the output side, a branch breaker (not shown) provided in the distribution board 110 branches the AC supply line into a plurality of systems, and an AC / DC converter is provided on the AC supply line of each system to convert it into DC power for each system. You may employ | adopt the structure to do.

  In this case, since the DC power supply unit 101 can be provided for each floor or room of the house H, the DC power supply unit 101 can be managed for each system, and the DC device 102 that uses DC power and Since the distance of the DC supply line Wdc between the two is reduced, the power loss due to the voltage drop in the DC supply line Wdc can be reduced. Also, the main breaker 111 and the branch breaker are housed in the distribution board 110, and the AC / DC converter 112, the cooperative control unit 113, the DC breaker 114, and the home server 116 are housed in a separate board from the distribution board 110. Also good.

  Below, the principal part of this embodiment is demonstrated with reference to FIG. In FIG. 1, a solid line indicates a power supply path, and a broken line indicates a communication path. As described above, the communication signal is superimposed on the DC voltage, but a communication path for transmitting the communication signal may be provided separately from the DC supply line Wdc. The direct-current power supply unit 101 includes a main power supply 10 including an AC / DC converter 112 and an alternating-current power supply AC, and a distributed power supply 20 including at least the secondary battery 162 among the solar battery 161, the secondary battery 162, and the fuel cell 163. With.

  In the illustrated example, the DC power supply unit 101 includes a power failure detection unit 11 that detects a stop of the main power source 10 (power failure or abnormal decrease in line voltage), a main power source 10, a distributed power source 20, and a DC supply line Wdc. And a power supply control unit 12 that performs the connection. The power supply control unit 12 also has a function of controlling the charging current to the secondary battery 162 provided in the distributed power supply 20. The power failure detection unit 11 and the power supply control unit 12 may be provided separately from the DC power supply unit 101. When the power failure detection unit 11 detects that the main power supply 10 is stopped, the power supply control unit 12 disconnects the main power supply 10 from the DC supply line Wdc and connects only the distributed power supply 20 to the DC supply line Wdc. With this configuration, the power source can be backed up by the distributed power source 20 when the main power source 10 is stopped.

  The DC device 102 receives power through a DC outlet (outlet) connected to the DC supply line Wdc. There are mainly two types of DC outlets, a DC outlet 131 and a hook ceiling 132. However, there is no substantial difference other than the connection form with the DC device 102. The direct current outlet 131 will be described as an example of the direct current outlet.

  The DC outlet 131 includes a wire connection portion 131f connected to the DC supply line Wdc and a device connection port 131g to which a plug blade such as a plug provided in the DC device 102 is detachably connected. A switch element 131a is inserted between the wire connection portion 131f and the device connection port 131g as a power supply selection unit that selects a state in which the wire connection port 131f and the device connection port 131g are made conductive or non-conductive. The In short, whether to supply power to the DC device 102 connected to the device connection port 131g is selected depending on whether the switch element 131a is on or off. An electromagnetic relay or a semiconductor switch is used for the switch element 131a.

  The power of the power receiving side communication unit 131b is supplied from the DC supply line Wdc without passing through the switch element 131a, and DC power is supplied to the power receiving side communication unit 131b even when the switch element 131a is turned off. The power-receiving-side communication unit 131b consumes less power than when the DC device 102 is operating, and the DC outlet 131 becomes high impedance when the switch element 131a is off.

  Switching on and off of the switch element 131a is switched by an instruction from the power failure detection unit 11 received through the power receiving side communication unit 131b. The switch element 131a is turned on while the main power supply 10 is operating, and when the power failure detection unit 11 notifies the stop of the main power supply 11, it is turned on or off under the conditions described below.

  The power receiving side communication unit 131 b provided in the DC outlet 131 holds identification information for distinguishing each DC outlet 131. The DC outlet 131 is basically arranged in advance when the DC supply line Wdc is pre-wired during construction of the house H, and is not moved thereafter. It is possible to include not only the information for performing the location information but also the location information.

  The DC outlet 131 is provided with a power reception control unit 131c that controls on / off of the switch element 131a under a specified condition after a power failure is notified to the power reception side communication unit 131b. The conditions used by the power reception control unit 131c include (1) whether or not the main power supply 10 is detected to be stopped by the power failure detection unit 11, (2) the remaining battery level of the secondary battery 162 provided in the distributed power supply 20, and (3) direct current. There is a current supplied to the DC device 102 connected to the outlet 131, (4) a time for operating the DC device 102 connected to the DC outlet 131, and the like. Regardless of the conditions, by turning on and off the switch element 131a provided in the DC outlet 131, whether to supply power when the main power supply 10 is stopped is selected for each DC device 102 connected to each DC outlet 131. Is possible.

  In condition (1), when the stop of the main power supply 10 is notified from the power failure detection unit 11, whether the switch element 131a is kept on or the switch element 131a is turned off to cut off the power supply to the DC device 102. select. When the stop of the main power supply 10 is detected, the power-receiving-side communication unit 131b set to turn off the switch element 131a can stop power supply to the DC device 102 connected to the DC outlet 131. . In addition, the power receiving communication unit 131b that is set to continue to turn on the switch element 131a when the stop of the main power supply 10 is detected can continue to supply power to the DC device 102.

  Therefore, in the DC outlet 131 to which the DC device 102 that needs to be supplied even when the main power supply 10 is stopped is set so that the switch element 131a is turned on, even when the main power supply 10 is stopped. Power supply to the DC device 102 can be continued.

  In each DC outlet 131, a setting unit 131e is provided in the DC outlet 131 in order to select whether to turn on or off the switch element 131a when the main power supply 10 is stopped. The setting unit 131e that selects whether the switch element 131a is turned on or off when the main power supply 10 is stopped includes, for example, a selection switch SW such as a DIP switch and a pull-up resistor R as shown in FIG. Can be used. In this configuration, depending on whether the selection switch SW is turned on or off, the input signal to the terminal to which the selection switch SW is connected in the power reception control unit 131c is H level (when off) and L level (when off) The on / off state of the switch element 131a when the main power supply 10 is stopped is selected by this signal.

  In the condition (2), on / off of the switch element 131a is determined according to the remaining battery level of the secondary battery 162. In order to use this condition, it is necessary to provide a remaining power monitoring means (not shown) in the distributed power source 20 in order to detect the remaining battery power. The remaining amount monitoring means divides the remaining amount of the secondary battery 162 into a plurality of stages, and the power reception control unit 131c of each DC outlet 131 defines to what level the switch element 131a is kept on. . For example, in the remaining amount monitoring means, the remaining battery level when fully charged is set to 100, and is divided into three stages of 0 to 60, 60 to 80, and 80 to 100, and level 1, level 2, Stages are classified as level 3. Each level can be used as a priority, and level 1 is the stage where the remaining battery level is the lowest, so the priority is the highest among the three stages.

  Each DC outlet 131 is supplied with a level corresponding to the remaining battery level monitored by the remaining amount monitoring means, and the power reception control unit 131c of each DC outlet 131 keeps the switch element 131a on to what level. Whether to continue power supply to the DC device 102 is defined. For example, when level 3 is specified, the switch element 131c is kept on when the remaining battery level is between 80 and 100, and the switch element 131c is turned off when the remaining battery level is less than 80. Similarly, at level 1, the switch element 131c is kept on until the remaining battery level becomes less than 60.

  Therefore, as the remaining battery level of the secondary battery 162 provided in the distributed power source 20 decreases, the switch elements 131c are sequentially turned off in the order of levels 3, 2, and 1. In other words, the DC devices 102 connected to the DC outlets 131 are sequentially stopped according to the set level, and the power supplied from the secondary battery 162 is reduced as the DC devices 102 are stopped. Therefore, it is possible to continue power supply to the DC device 102 connected to the DC outlet 131 set to level 1 for a relatively long time. That is, the DC outlet 131 with a high priority has a longer time for the switch element 131a to be kept on longer than the DC outlet 131 with a low priority. The priority is not limited to the remaining battery level but can also be defined by time.

  In order to control on / off of the switch element 131a in accordance with the level of the remaining battery level in the DC outlet 131, for example, the configuration shown in FIG. 3 may be adopted as the setting unit 131e. The setting unit 131e in the illustrated example has a configuration in which pull-up resistors R1 to Rn are connected in series to a plurality of selection switches SW1 to SWn, and the connection between the selection switches SW1 to SWn and the pull-up resistors R1 to Rn. The point is connected to the power reception control unit 131c. In this configuration, the remaining battery level can be associated with the on / off state of the switch element 131a by the combination of the on / off states of the selection switches SW1 to SWn. For example, if the selection switches SW1, SW2, and SW3 are associated with levels 1, 2, and 3, respectively, the DC outlet 131 in which only the selection switch SW1 is on is switched on until the remaining battery level drops to level 1. In the DC outlet 131 in which only the selection switch SW3 is turned on, the switch element 131a is turned on only while the remaining battery level is 3.

  In condition (3), on / off of the switch element 131 a is determined according to the current supplied to the DC device 102 connected to the DC outlet 131. The DC outlet 131 is provided with a current sensor SC for detecting a current flowing through the device connection port 131g, and the switch element 131a is turned on by the power reception control unit 131c by monitoring the output of the current sensor SC by the current detection unit 131h. Decide whether to turn it off. As the current sensor SC, a so-called DC current transformer in which a toroidal core and a Hall element are combined can be used. A configuration in which a current is detected by inserting a low resistance between the wire connection portion 131f and the device connection port 131g and measuring the voltage across the low resistance is also conceivable. It is preferable to use a device for the current sensor SC.

  In the power reception control unit 131c, an allowable value that can be supplied to the DC device 102 is set for each DC outlet 131, and after the power failure detection unit 11 notifies the power reception side communication unit 131b that the main power supply 10 is stopped, the current sensor SC. When the measured current value exceeds the allowable value, the DC outlet 131 turns off the switch element 131a. In other words, if the current value detected by the current detector 131h is less than the allowable value, the switch element 131a is continuously turned on. With this operation, the current supplied to the DC device 102 during power supply from the distributed power supply 20 can be limited, and the upper limit of the current supplied from the distributed power supply 20 after the main power supply 10 is stopped is defined. It is possible to guarantee the energization time for the DC device 102 connected to 131.

  In the configuration in which the current is detected by the current sensor SC, information on the current value detected by the DC outlet 131 by the current sensor SC is exchanged by communication, or the current value is sent to a management device such as the home server 116 or the center server 200. It is possible to centrally manage the information. In this configuration, the total of the current values detected by the current sensor SC of each DC outlet 131 can be obtained during a period when power is supplied from the distributed power supply 20 after the main power supply 10 is stopped. In the configuration for obtaining the total of the current values, when the remaining battery level of the secondary battery 162 of the distributed power source 20 monitored in the condition (2) is used in combination, the switch element 131a is set to a level at which the switch element 131a is turned off in the condition (2). With respect to the DC outlet 131, the switch element 131a can be kept on depending on the current value detected by the current sensor SC.

  For example, when the remaining battery level is 60 to 80, the switch element 131a in the level 3 DC outlet 131 is normally turned off, but even the level 3 DC outlet 131 is detected by the current sensor SC. When the current value to be applied is smaller than the specified current value, the switch element 131a may be kept on. In other words, the current value detected by the current sensor SC in the level 3 DC device 102 is specified even when the remaining amount of battery is allowed to be received only by the level 1 and level 2 DC devices 102. A current smaller than the current value may be allowed to receive power.

  The condition (4) uses a time limit for continuously turning on the switch element 131a after the main power supply 10 is stopped. That is, the switch element 131a is kept on until the time limit elapses after the main power supply 10 is stopped, and the switch element 131a is turned off after the time limit elapses. The time limit can be set individually at each DC outlet 131.

  In the illustrated example, a time processing unit 131d that stores the time limit and counts the time limit and instructs the power reception control unit 131c to keep the switch element 131a on during the time limit after the main power supply 10 is stopped is provided. ing. The time limit can be set by the setting unit 131e. The setting unit 131e also has a function of setting a current value in the operation using the condition (3).

  Instead of providing the setting unit 131e in the DC outlet 131, a display device 117 or other terminal device that can communicate with the DC outlet 131 is used to set an allowable current value or a time limit using a communication signal. It may be.

  In the configuration described above, if the DC device 102 is connected to the DC outlet 131 on a one-to-one basis, controlling on / off of the switch element 131a in the DC outlet 131 is controlling the operation and stop of the DC device 102. Become equivalent. That is, since power reception at the DC device 102 is controlled at the DC outlet 131, the DC device 102 connected to the DC outlet 131 does not require a communication function or the like, and the main power supply 10 is used while using the general DC device 102. It becomes possible to select whether or not to supply power at the time of stopping.

  By the way, in the configuration shown in FIG. 1, after the main power supply 10 is stopped, the DC outlet 131 determines whether the switch element 131 a is turned on or off. In addition to notifying that the main power supply 10 is stopped, the level of the remaining battery level is notified. On the other hand, in the home server 116 and the center server 200, it is also possible to manage on / off of the switch element 131a for each DC outlet 131.

  In the above-described configuration in which the operation of the main power supply 10 is managed in each DC outlet 131, since the conditions are also set in the DC outlet 131, the user directly checks the DC device 102 connected to the DC outlet 131. You can set conditions. That is, it can be said that it is desirable in that the setting contents are easy to understand and the processing load on the home server 116 and the center server 200 is reduced as compared with the case of centralized management. Further, each DC outlet 131 only needs to receive information of the same content, such as information on the stop of the main power supply 10 and the level of the remaining battery level, so information is transmitted by broadcast communication such as broadcast communication or multicast communication. As a result, there is no variation in the reception time of information in each DC outlet 131, and an increase in traffic is also suppressed.

  However, if centralized management at the home server 116 and the center server 200 is enabled, it is possible to know how the DC outlets 131 operate in a lump so that management becomes easy. Therefore, as shown in FIG. 5, in the management device (in the illustrated example, the home server 116, but the center server 200 or another management device may be provided), the power failure detection unit 11 stops the main power supply 10. A device storage unit 13 that stores the control content of each DC outlet 131 after detection is provided. The control content of each DC outlet 131 is information corresponding to the above-described conditions (1) to (4). When the power failure detection unit 11 detects the stop of the main power supply 10, the switch element 131a is turned on or off. The switch element 131a is turned on or off according to the level of the remaining battery level, or the switch element 131a is turned on or off using the output of the current sensor SC or the time limit. Means information. These conditions (1) to (4) can be mixed in the device storage unit 13 as long as a plurality of pieces of information are not applied to one DC outlet 131 at the same time.

  It is the operation specifying unit 14 provided in the home server 116 as a management device that instructs each DC outlet 131 to execute the control content stored in the device storage unit 13. The operation of the DC outlet 131 after the stop is detected by the power failure detection unit 11 is instructed to each DC outlet 131 according to the contents stored in the device storage unit 13.

  In order to set the control contents of the DC device 102 in the device storage unit 13, a terminal device (not shown) connected to the wide area network NT or the home network is used. As the terminal device, a display 117, a personal computer, a mobile phone, or the like can be used. In this example, it is assumed that the terminal device has a browser function, and the center server 200 or the home server 116 can set items to be stored in the device storage unit 13 using the browser function of the terminal device. To provide services. That is, the center server 200 or the home server 116 functions as a service providing unit.

  For example, the center server 200 presents a setting screen for registering necessary items in the device storage unit 13 on the terminal device, and sets necessary items by operating an operation unit attached to the terminal device. Is registered in the device storage unit 13 by the center server 200. Similar processing can be performed by the home server 116 instead of the center server 200. When the home server 116 is used as a service providing unit, if the display device 117 is used as a terminal device, the possibility of information leakage can be reduced because the wide area network NT is not used when registering necessary items in the device storage unit 13. .

  When the device storage unit 13 stores the control content in which the switch element 131a of each DC outlet 131 is turned on / off in association with only the main power supply 10 being stopped in the power failure detection unit 11, for each DC outlet 131. Each of them instructs to turn on / off the switch element 131a. Further, in the case where the instruction content in which the level of the remaining battery level after the main power supply 10 is stopped in the power failure detection unit 11 is associated with the on / off of the switch element 131a is stored in the device storage unit 13, the level of the remaining battery level In response to this, each DC outlet 131 is instructed to turn on / off the switch element 131a.

  Further, when the output of the current sensor SC is registered in the device storage unit 13 in association with the on / off of the switch element 131a, the current value detected by the current sensor SC is acquired in the operation specifying unit 14, and the current value is determined according to the current value. Then, the processing corresponding to the condition (3) described above is performed. As described above, the current value can be used in combination with the remaining battery level. Furthermore, a configuration corresponding to the time processing unit 131d may be provided in the home server 116 as a management device, and a configuration in which the switch element 131a of each DC outlet 131 is controlled according to the time limit may be employed.

  Even when the control of a plurality of DC outlets 131 is centrally managed by using a management device such as the home server 116 or the center server 200, the operation of the switch element 131a provided in each DC outlet 131 is performed by each DC outlet. This is similar to the operation performed at 131.

  In the above-described embodiment, an example in which the device storage unit 13 and the operation specifying unit 14 are provided in the in-home server 116 is shown, but any one of the DC power supply unit 101, the cooperative control unit 113, and the center server 200 is provided. It is also possible to provide them, and it is also possible to provide them as other devices independent of these devices. Further, although the DC power supply unit 101 is illustrated as the power supply unit, an AC power supply unit may be used. In this case, instead of the DC device 102, an AC device is used as the device.

It is a principal part block diagram which shows embodiment of this invention. It is a principal part circuit diagram which shows one structure of the DC outlet used for the same as the above. It is a principal part circuit diagram which shows the other structure of the DC outlet used for the same as the above. It is a block diagram which shows the whole structure same as the above. It is a block diagram of the principal part which shows the other structural example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main power supply 11 Power failure detection part 12 Electric power feeding control part 13 Equipment storage part 14 Operation | movement designation | designated part 20 Distributed power supply 101 DC power supply part (power supply part)
102 DC equipment (equipment)
116 Home server (management device)
131 DC outlet (Outlet)
131a switch element 131b power reception side communication unit 131c power reception control unit 131d time processing unit 131e setting unit 131f power supply connection unit 131g device connection port 131h current detection unit 132 catch ceiling (outlet)
200 Center server (management device)
H House SC Current sensor Wdc DC supply line (power supply line)

Claims (10)

  A power supply unit with a distributed power source that can be backed up when the main power supply is stopped, a power supply connection unit that is connected to the power supply unit via a power supply line, and a device connection port that is electrically connected to the device. And a plurality of outlets having switch elements for selecting whether or not energization between the power supply unit and the device connection port is possible, and the power supply unit is communicable with the outlet and detects the stop of the main power supply. A power failure compensation system comprising: a power failure detection unit for notifying, and an outlet having a power reception control unit for controlling on / off of a switch element according to a prescribed condition after a stop of a main power source is notified from the power failure detection unit.   The outlet includes a setting unit that selects on / off of the switch element when the main power supply is stopped, and the power reception control unit is selected by the setting unit when the main power supply is stopped from the power failure detection unit. The power failure compensation system according to claim 1, wherein on / off of the switch element is controlled according to:   The setting unit sets a priority for continuing to turn on the switch element after the main power supply is stopped, and the power reception control unit is configured to receive a stop of the main power source from the power failure detection unit. 3. The power failure compensation system according to claim 2, wherein the switch element is controlled such that the higher the set priority is, the longer the switch element is kept on.   The outlet includes a current detection unit that detects a current supplied to the device, and the setting unit sets an allowable value of a current value supplied to the device after the main power supply is stopped, and the power reception control The unit turns on the switch element when the current detected by the current detection unit is equal to or less than the allowable value set by the setting unit when the main power supply is stopped from the power failure detection unit. The power failure compensation system according to claim 2 or 3.   The setting unit sets a time limit for continuously turning on the switch element after the main power supply is stopped, and the power reception control unit is configured to notify the power failure detection unit that the main power supply is stopped. The power failure compensation system according to claim 2 or 3, wherein the switch element is turned on until a time limit set in (1).   A management device communicable with the outlet, the management device comprising: a device storage unit that defines ON / OFF of the switch element for each outlet when the main power supply is stopped; and the power failure detection unit that stops the main power supply. An operation designating unit for instructing each outlet to turn on / off the switch element by communication according to the contents defined in the device storage unit, and the power reception control unit of each outlet includes the switch element according to the instruction content from the operation designating unit. The power failure compensation system according to claim 1, wherein on / off is controlled.   The device storage unit is set with a priority for continuing to turn on the switch element after the main power supply is stopped, and the operation specifying unit is a device storage unit when the power failure detection unit detects the stop of the main power supply. The switch element is instructed to be turned on and off according to the priority defined in the device storage unit so that the higher the set priority is, the longer the period during which the switch element is turned on is longer. The power failure compensation system described.   The outlet includes a current detection unit that detects a current supplied to the device, and the device storage unit is set with an allowable value of a current value supplied to the device after the main power supply is stopped, and the operation When the power failure detection unit detects the stop of the main power supply, the designation unit is configured to turn on the switch element when the current detected by the current detection unit is equal to or less than an allowable value set in the device storage unit. The power failure compensation system according to claim 6 or 7, characterized by:   The device storage unit is set with a time limit for continuously turning on the switch element after the main power supply is stopped, and the operation specifying unit is a device storage unit when the power failure detection unit detects the stop of the main power supply. 8. The power failure compensation system according to claim 6 or 7, wherein the outlet is instructed to turn on the switch element until a time limit set in (1).   The power failure compensation system according to any one of claims 1 to 9, wherein the power supply unit supplies direct-current power, and the device is a direct-current device driven by direct-current power.

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