JP2010041785A - Power distribution system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use a single power supply line commonly as a route for supplying AC power and a route for supplying DC power. <P>SOLUTION: An AC distribution panel 3 is connected with a commercial power supply AC and receives AC power therefrom. A DC power supply 4 generates DC power. A switching apparatus 6 switches the power on a power supply line L to which electrical devices 1a and 1b are electrically connected between AC power from the AC distribution panel 3 or DC power from the DC power supply 4. An AC power supply block 8 conducts between the power supply line L and the electrical device 1a when the power on the power supply line L is AC power, and interrupts between the power supply line L and the electrical device 1b when the power on the power supply line L is DC power. The DC power supply block 9 conducts between the power supply line L and the electrical device 1b when the power on the power supply line L is DC power, and interrupts between the power supply line L and the electrical device 1b when the power on the power supply line L is AC power. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a power distribution system for supplying electric power to an electrical device.

As a conventional power distribution system for supplying electric power to an electric device, a system including an AC supply path for supplying AC power to the electric device and a DC supply path for supplying DC power to the electric device is known ( For example, see Patent Document 1). In a conventional power distribution system, AC power from a commercial power source is supplied to electrical equipment connected to the AC supply path, and direct current from a DC power supply (such as a fuel cell) is supplied to electrical equipment connected to the DC supply path. DC power converted from AC power and commercial AC power is supplied.
JP 2003-204682 A

  However, in the conventional power distribution system, since the AC supply path and the DC supply path are separate supply lines, the number of lines has increased. For this reason, there was a problem that wiring was troublesome.

  The present invention has been made in view of the above points, and its purpose is to share a supply path for supplying AC power and a supply path for supplying DC power by a single power supply line. It is to provide a power distribution system that can.

  The invention of claim 1 includes a power supply line to which electrical equipment is electrically connected, power supply connection means connected to a commercial power supply, a direct current power supply including a power generation device for generating direct current power, and the power supply line. A switching device that switches between the AC power from the commercial power source and the DC power from the DC power source, the switching device power on the power supply line according to the occurrence of a specific event It is characterized by switching.

  According to a second aspect of the present invention, in the first aspect of the invention, there is provided DC power detection means for detecting the amount of power generated by the DC power from the DC power supply, and the switching device is preset with a detection value of the DC power detection means. When the DC power reference value is equal to or higher than the DC power reference value, the power on the power supply line is switched to DC power from the DC power supply.

  The invention of claim 3 is the invention of claim 1, further comprising a power failure detection means for detecting a power failure of the commercial power supply, and the switching device, when a power failure of the commercial power supply is detected by the power failure detection means, The power on the power supply line is switched to the DC power from the DC power supply.

  According to a fourth aspect of the present invention, in the first aspect of the invention, there is provided AC power detection means for detecting the magnitude of AC power from the commercial power supply, and the switching device is preset with a detection value of the AC power detection means. If it is equal to or greater than the threshold value, the power on the power supply line is switched to the DC power from the DC power supply.

  The invention of claim 5 is the invention of claim 1, further comprising an illuminance sensor for detecting the illuminance of outside light, wherein the switching device has an illuminance detection value of the illuminance sensor equal to or greater than a preset illuminance reference value. While the power on the power supply line is switched to DC power, when the detected illuminance value of the illuminance sensor is less than the illuminance reference value, the power on the power supply line is switched to AC power.

  The invention of claim 6 comprises the electric lock for locking and unlocking the door according to the invention of claim 1, wherein the switching device generates power on the power supply line when the door is locked by the electric lock. While switching to DC power, when the door is unlocked by the electric lock, the power on the power supply line is switched to AC power.

  The invention of claim 7 is the invention of claim 1, wherein the timekeeping means for measuring the current time, the AC supply time zone in which the power on the power supply line is AC power, and the power on the power supply line are DC power And a storage means for storing a DC supply time zone, wherein the switching device, when the current time measured by the time measuring means is included in the AC supply time zone, the power on the power supply line is While switching to AC power from a commercial power supply, when the current time measured by the clock means is included in the DC supply time zone, the power on the power supply line is switched to DC power from the DC power supply. And

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the switching device changes the power supply state on the power supply line to supply of AC power from the commercial power source and the DC. It is characterized by switching between the supply of DC power from the power supply and the stop of power supply.

  The invention of claim 9 is the invention of claim 8, further comprising a power supply permission device that permits power supply on the power supply line, wherein the power supply permission device performs communication with the switching device. The first communication unit is controlled to transmit an AC permission signal to the switching device when a request is made to change the power on the power supply line to AC power. The first communication means is controlled to transmit a DC permission signal to the switching device when a request for changing the power of the power to DC power is to be made, while a stop signal is switched to when the request to stop power supply is made. Requesting means for controlling the first communication means to transmit to the apparatus, and the switching device has second communication means for communicating with the power supply permission device, and the second The communication means A When the permission signal is received, the power on the power supply line is changed to AC power, and when the DC permission signal is received by the second communication means, the power on the power supply line is changed to DC power. When the stop signal is received by the second communication means, there is provided a switching control means for stopping the power supply to the power supply line.

  A tenth aspect of the invention is the detection according to any one of the first to ninth aspects, wherein the type of the supplied power is detected whether the power supplied from the power supply line is AC power or DC power. And power adapting means for stopping the supply of the supplied power to the electric device when the type of the supplied power detected by the detecting device is different from the required power type required by the electric device. It is characterized by that.

  According to an eleventh aspect of the present invention, in any one of the first to ninth aspects, the electrical device is an AC / DC electrical device.

  According to the invention of claim 1, the supply path for supplying AC power by the switching device switching the power on the power supply line between AC power and DC power in response to the occurrence of a specific event. And a supply path for supplying DC power can be shared by a single power supply line, and power can be supplied in accordance with the occurrence of a specific event.

  According to the invention of claim 2, if the DC power supply has a sufficient supply capability, DC power can be supplied to the power receiving side terminal, so that the amount of AC power used from the commercial power supply can be reduced, As a result, the electricity bill can be reduced.

  According to the invention of claim 3, since the DC power from the DC power source can be supplied to the power receiving side terminal even during the power failure of the commercial power source, the influence of the power failure of the commercial power source can be reduced.

  According to invention of Claim 4, when the magnitude | size of alternating current power becomes more than a threshold value, the switching apparatus will switch the electric power on a power supply line to the direct current power from direct current power supply, and the peak of alternating current power from commercial power supply will be carried out. Since it can suppress, an electricity bill can be reduced.

  According to the fifth aspect of the present invention, when the lighting device operating with AC power is electrically connected to the power supply line as an electric device, it is not necessary to turn on the lighting device when the illuminance of outside light is high. Therefore, by switching the power on the power supply line to DC power, it is possible to effectively use an electric device that operates with DC power. On the other hand, when the illuminance of outside light is low, the lighting device can be turned on by switching the power on the power supply line to AC power. Further, when a solar battery is provided as a DC power source, if the illuminance of external light is high, the supply capacity of the solar battery increases, so that DC power can be used effectively.

  According to the sixth aspect of the present invention, when a security device that operates with DC power is electrically connected to the power supply line as an electrical device, the security device is operated when the door goes out and the door is locked. It is possible to stop the operation of the security device when the householder returns home and the door is unlocked.

  According to the seventh aspect of the present invention, time management can be performed with respect to switching of power on the power supply line. For example, if the AC supply time zone is set to midnight when the electricity bill is cheap and the DC supply time zone is set to the daytime when the electricity bill is high, the electricity bill can be reduced.

  According to the invention of claim 8, since the power supply on the power supply line can be stopped, it is possible to reduce wasteful standby power generated when the electric device is not operated.

  According to the ninth aspect of the present invention, the switching device can be controlled by transmitting a request from the power supply permission device to the switching device by communication.

  According to the invention of claim 10, the power supply line is stopped by stopping the supply of the supplied power to the electric device when the type of the power supplied from the power supply line and the required power of the electric device are different by the power adapting means. Regardless of which electric power (AC power or DC power) is supplied, each electric device can be supplied with only the same type of supplied power as the required power.

  According to the eleventh aspect of the invention, since the electric device can operate regardless of whether AC power is supplied to the electric device or DC power is supplied, the detection means necessary for converting the type of the supplied power And no power adapting means.

(Embodiment 1)
A configuration of the power distribution system according to the first embodiment will be described. As shown in FIG. 1, this power distribution system is a system that is installed in a house H and supplies power to a plurality of electric devices 1a and 1b, and a power supply line L to which the electric devices 1a and 1b are electrically connected. A plurality of outlets (outlets) 2 connected to the power supply line L, an AC distribution board 3 connected to the commercial power source AC, a DC power source 4 including a power generator for generating DC power, A management device 5 that manages the DC power supply 4, a switching device 6 that switches power on the power supply line L between AC power and DC power, and an adapter 7a that is inserted between the outlet 2 and the electrical devices 1a and 1b, respectively. , 7b. In the present embodiment, the combination of the electric device 1a and the adapter 7a and the combination of the electric device 1b and the adapter 7b correspond to the electric device of the present invention. In the present embodiment, the outlet 2 is shown as the outlet, but the hooking ceiling for attaching the lighting fixture is also included in the outlet.

  The electric device 1a is an AC electric device including a main operating unit 10a that operates by being supplied with AC power and a plug 11a for connection to the outside (such as the adapter 7a and the outlet 2). On the other hand, the electric device 1b is a DC electric device including a main operation unit 10b that operates by being supplied with DC power and a plug 11b for connection to the outside (such as the adapter 7b and the outlet 2). As the electric device 1b, there is a security device such as a device that is required to have reliability, urgency, and security. An electric device 1a and an electric device 1b are mixedly connected to the power supply line L.

  Each outlet 2 is provided with a plurality of plug insertion holes 20 into which plugs are inserted, and the plugs 70a and 70b of the adapters 7a and 7b are inserted into the plug insertion holes 20 so that each outlet 2 has an adapter 7a. , 7b are connected to the electric devices 1a, 1b.

  The AC distribution board 3 includes a main breaker 30, a breaker 31, and an AC power detection unit (AC power detection means) 32 that detects the magnitude of AC power from the commercial power source AC. The AC distribution board 3 corresponds to the power connection means of the present invention.

  The AC power detection unit 32 transmits a peak power signal to the switching device 6 when the detection value reaches a preset threshold value. The AC power detection unit 32 is also a power failure detection unit that detects a power failure and power failure recovery of the commercial power source AC. The AC power detection unit 32 that has detected a power failure of the commercial power supply AC transmits a power failure signal to the switching device 6. Thereafter, the AC power detection unit 32 that has detected the recovery from the power failure transmits a power failure recovery signal to the switching device 6.

  Here, the AC power supply main line Lac, which is a power supply path from the AC distribution board 3 for AC power generated by the commercial power supply AC, is also used as a communication path. The AC power detection unit 32 is connected to the AC power supply main line Lac by superimposing a communication signal (peak power signal, power failure signal, power failure recovery signal) that transmits data using a high-frequency carrier wave on the AC voltage. Communication with the switching device 6 is enabled.

  The DC power source 4 includes a solar cell 40 and a fuel cell 41 that generate DC power, and a secondary battery 42 that is charged with DC power.

  The management device 5 detects the amount of DC power generated by the DC power supply 4. The management device 5 transmits a supply enable signal to the switching device 6 when the detected value is equal to or greater than a preset reference value. The management device 5 corresponds to the DC power detection means of the present invention.

  Here, the DC power supply main line Ldc, which is a power supply path from the DC power supply 4 for the DC power generated by the DC power supply 4, is also used as a communication path. The management device 5 communicates with the switching device 6 connected to the DC power supply main line Ldc by superimposing a communication signal (a suppliable signal) for transmitting data using a high-frequency carrier wave on the DC voltage. Is possible. 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.

  As illustrated in FIG. 2, the switching device 6 includes a first communication unit 60 that performs communication with the AC power detection unit 32, a second communication unit 61 that performs communication with the management device 5, and A switching unit 62 and a control unit 63 that controls the switching unit 62 are provided. The switching device 6 is housed in the DC distribution board B together with the management device 5 (see FIG. 1).

  The first communication unit 60 receives the peak power signal transmitted from the AC power detection unit 32 when the detection value of the AC power detection unit 32 reaches the threshold value. Further, the first communication unit 60 receives a power failure signal transmitted from the AC power detection unit 32 when the AC power detection unit 32 detects a power failure of the commercial power supply AC. Furthermore, the first communication unit 60 receives from the AC power detection unit 32 a power failure recovery signal that is transmitted when the AC power detection unit 32 detects the recovery of the commercial power supply AC.

  The second communication unit 61 receives from the management device 5 a supplyable signal that is transmitted when the detection value of the management device 5 is greater than or equal to the reference value.

  The control unit 63 controls the switching unit 62 so as to switch the connection source of the power supply line L between the AC power supply main line Lac and the DC power supply main line Ldc.

  In particular, when the peak power signal is received by the first communication unit 60 when the connection source of the power supply line L is the AC power supply main line Lac, the control unit 63 determines the connection source of the power supply line L. The power on the power supply line L is switched to the DC power from the DC power supply 4 by controlling the switching unit 62 to switch from the AC power supply main line Lac to the DC power supply main line Ldc.

  In addition, when a power failure signal is received by the first communication unit 60, the control unit 63 controls the switching unit 62 so that the connection source of the power supply line L is the DC power supply main line Ldc. The power on the supply line L is changed to DC power from the DC power supply 4. Thereafter, when the power failure recovery signal is received by the first communication unit 60, the control unit 63 switches the connection source of the power supply line L from the DC power supply main line Ldc to the AC power supply main line Lac. By controlling 62, the power on the power supply line L is switched from DC power to AC power.

  On the other hand, when the connection source of the power supply line L is the AC power feeding main line Lac and the second communication unit 61 receives a supplyable signal, the control unit 63 determines the connection source of the power supply line L. The power on the power supply line L is switched to the DC power from the DC power supply 4 by controlling the switching unit 62 to switch from the AC power supply main line Lac to the DC power supply main line Ldc.

  As shown in FIG. 3, the adapter 7 a includes a plug 70 a for connecting to the outlet 2 and a plug insertion hole 71 a to which the electric device 1 a is connected, and incorporates an AC power supply block 8 described later. The adapter 7b includes a plug 70b for connecting to the outlet 2, and a plug insertion hole 71b to which the electric device 1b is connected, and a DC power supply block 9 described later is incorporated therein. That is, the AC power supply block 8 and the DC power supply block 9 are provided in association with the electric devices 1a and 1b between the power supply line L and the electric devices 1a and 1b for each of the electric devices 1a and 1b. ing.

  The AC power supply block 8 includes a detection unit (detection means) 80 that detects the type of power supplied from the power supply line L, a switching unit 81, and a control unit 82 that controls the switching unit 81.

  The detection unit 80 detects whether the supplied power is AC power or DC power as detection of the type of supplied power.

  When the detection unit 80 detects that the power on the power supply line L is AC power, the control unit 82 controls the switching unit 81 so that the power supply line L and the electric device 1a are electrically connected. That is, the supply power that is AC power is supplied to the electrical device 1a.

  On the other hand, when the detection unit 80 detects that the power on the power supply line L is DC power, the control unit 82 controls the switching unit 81 so as to cut off the connection between the power supply line L and the electrical device 1a. . That is, the control unit 82 stops the supply of the supplied power to the main operation unit 10a when the type of the supply power detected by the detection unit 80 is different from the type of requested power from the main operation unit 10a.

  The DC power supply block 9 includes a detection unit (detection means) 90 that detects the type of power supplied from the power supply line L, a switching unit 91, and a control unit 92 that controls the switching unit 91.

  The detection unit 90 detects whether the supplied power is AC power or DC power as detection of the type of supplied power.

  When the detection unit 90 detects that the power on the power supply line L is DC power, the control unit 92 controls the switching unit 91 so that the power supply line L and the electric device 1b are electrically connected. That is, the supply power that is direct current power is supplied to the electrical device 1b.

  On the other hand, when the detection unit 90 detects that the power on the power supply line L is AC power, the control unit 92 controls the switching unit 91 so as to cut off the connection between the power supply line L and the electrical device 1b. . That is, the control unit 92 stops the supply of the supplied power to the main operation unit 10b when the type of the supply power detected by the detection unit 90 is different from the type of the required power from the main operation unit 10b.

  In addition, since the electrical distribution system of this embodiment cannot use the electrical apparatus 1a for alternating current and the electrical apparatus 1b for direct current simultaneously, it is necessary to use the electrical apparatus 1a and the electrical apparatus 1b properly according to a condition. . For example, normally, the electric device 1a operates with the power on the power supply line L as AC power, and the electric device 1b operates with the power on the power supply line L as DC power during a power failure. .

  Further, when the user goes out, the power on the power supply line L may be DC power so that the DC electrical device 1b (security device) operates, and when the user goes home, the power on the power supply line L may be AC power. Good.

  As described above, according to the present embodiment, the switching device 6 supplies AC power by switching the power on the power supply line L between AC power and DC power according to the occurrence of a specific event. A supply path and a supply path for supplying DC power can be shared by a single power supply line L, and power can be supplied in accordance with the occurrence of a specific event.

  In addition, according to the present embodiment, if the DC power supply 4 has a sufficient supply capability, DC power can be supplied to the electric equipment 1b, so that the amount of AC power used from the commercial power supply AC can be reduced. As a result, the electricity cost can be reduced.

  Furthermore, according to the present embodiment, since the DC power from the DC power supply 4 can be supplied to the electric equipment 1b even during a power failure of the commercial power supply AC, the influence of the power failure of the commercial power supply AC can be reduced. . Then, after the power failure of the commercial power source AC is recovered, the AC power from the commercial power source AC can be supplied to the electric device 1b.

  Further, according to the present embodiment, when the magnitude of the AC power becomes equal to or greater than the threshold value, the switching device 6 switches the power on the power supply line L to the DC power from the DC power supply 4, whereby the AC from the commercial power supply AC. Since the power peak can be suppressed, the electricity cost can be reduced.

  Further, according to the present embodiment, when the types of power supplied from the power supply line L and the required power of the electric devices 1a and 1b are different by the control units 82 and 92, supply of the supplied power to the electric devices 1a and 1b is performed. By stopping the power supply, no matter what power (AC power, DC power) is supplied on the power supply line L, only supply power of the same type as the required power is supplied to each electrical device 1a, 1b. Can do.

  In addition, according to the present embodiment, the adapters 7a and 7b are provided between the outlet 2 and the electric devices 1a and 1b, and the AC power supply block 8 and the DC power supply block 9 are separated from the main operation units 10a and 10b. By being provided, it is not necessary to give a special power conversion function to the devices including the main operation units 10a and 10b (the electric devices 1a and 1b in the present embodiment), so that conventional electric devices can be used. .

(Embodiment 2)
Although the power distribution system according to the first embodiment is not shown in the figure, a timer (clocking means) that measures the current time, an AC supply time zone in which the power on the power supply line L is AC power, and the power on the power supply line L The power distribution system according to the first embodiment is different from the power distribution system according to the first embodiment in that it includes a storage unit (storage unit) that stores a DC supply time zone for DC power.

  In the present embodiment, the control unit 63 of the switching device 6 switches the connection source of the power supply line L to the AC power supply main line Lac when the current time measured by the timer is included in the AC supply time zone. By controlling the unit 62, the power on the power supply line L is switched to AC power from the commercial power source AC. On the other hand, when the current time measured by the timer is included in the DC supply time zone, the control unit 63 controls the switching unit 62 so that the connection source of the power supply line L is the DC power supply main line Ldc. The power on the power supply line L is switched to the DC power from the DC power source 4.

  As described above, according to the present embodiment, time management can be performed with respect to switching of power on the power supply line L. For example, if the AC supply time zone is set to midnight when the electricity bill is cheap and the DC supply time zone is set to the daytime when the electricity bill is high, the electricity bill can be reduced.

(Embodiment 3)
As shown in FIG. 4, the power distribution system according to the third embodiment includes a power supply permission device 2 a that permits power supply on the power supply line L, and the power distribution system according to the first embodiment (see FIG. 1). Is different. In addition, about the component similar to Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The power supply permission device 2a includes a communication unit (first communication unit) 21 that performs communication with the switching device 6a, and performs an AC request when the power on the power supply line L is changed to AC power. The communication unit 21 is controlled so as to transmit the permission signal to the switching device 6a, and the communication unit 21 is configured to transmit the DC permission signal to the switching device 6a when the power on the power supply line L is requested to be DC power. On the other hand, when making a request to stop power supply, a request unit (request means) 22 that controls the communication unit 21 to transmit a stop signal to the switching device 6a, and driving of the communication unit 21 and the request unit 22 A sub power source 23 serving as a power source is provided.

  As illustrated in FIG. 5, the switching device 6a of the present embodiment includes a third communication unit (second communication unit) 64 that performs communication with the power supply permission device 2a, and power on the power supply line L. The supply state is switched between the supply of AC power from the commercial power supply AC, the supply of DC power from the DC power supply 4, and the stop of power supply. The switching device 6a has the same configuration as the switching device 6 (see FIG. 2) of the first embodiment except for the points described above.

  When the third communication unit 64 receives an AC permission signal, the control unit 63 controls the switching unit 62 so that the power on the power supply line L is changed to AC power, and the third communication unit 64 performs DC permission. When the signal is received, the switching unit 62 is controlled so that the power on the power supply line L becomes DC power. On the other hand, when the stop signal is received by the third communication unit 64, the power is supplied to the power supply line L. It is the switching control means which stops.

  As shown in FIG. 4, when the brightness sensor 24 that detects the illuminance of outside light is connected to the power supply permission device 2a, the request unit 22 indicates that the illuminance detection value of the brightness sensor 24 is equal to or greater than the illuminance reference value. If there is, the communication device 21 is controlled by the switching device 6a so as to transmit the DC permission signal. On the other hand, when the detected illuminance value of the brightness sensor 24 is less than the illuminance reference value, the request unit 22 sends an AC permission signal to the switching device 6a in order to enable lighting of the illumination device that is the AC electrical device 1a. The communication unit 21 is controlled to transmit.

  As mentioned above, according to this embodiment, since the electric power supply on the electric power supply line L can be stopped, the useless standby | standby electric power which generate | occur | produces when not operating the electric equipment 1a, 1b can be reduced.

  Further, according to the present embodiment, the switching device 6 can be controlled by transmitting a request from the power supply permission device 2a to the switching device 6 by communication. For example, it is possible not only to request the type of power on the power supply line L using the power supply permission device 2a, but also to request the stop of power supply on the power supply line L, so that wasted standby power Can be reduced.

  Furthermore, according to the present embodiment, when the lighting device operating with AC power is electrically connected to the power supply line L as the electric device 1a, it is necessary to turn on the lighting device when the illuminance of outside light is high. Therefore, by switching the power on the power supply line L to DC power, the electric device 1b operating with DC power can be used effectively. On the other hand, when the illuminance of outside light is low, the lighting device can be turned on by switching the power on the power supply line L to AC power. Moreover, since the supply capability of the solar cell 40 will increase when the illuminance of outside light is high, DC power can be used effectively.

(Embodiment 4)
Although not shown, the power distribution system according to the fourth embodiment is different from the power distribution system according to the third embodiment in that the power supply permission device 2a includes an electric lock that locks and unlocks the door.

  In the present embodiment, the request unit 22 of the power supply permission device 2a controls the communication unit 21 to transmit a DC permission signal to the switching device 6a when the door is locked by an electric lock. On the other hand, when the door is unlocked by the electric lock, the communication unit 21 is controlled to transmit an AC permission signal or a stop signal to the switching device 6a.

  When the third communication unit 64 receives the DC permission signal, the control unit 63 controls the switching unit 62 to change the power on the power supply line L to DC power, and the third communication unit 64 performs AC permission. When the signal is received, the switching unit 62 is controlled so that the power on the power supply line L is changed to AC power. When the stop signal is received by the third communication unit 64, the power supply to the power supply line L is supplied. Stop.

  As described above, according to the present embodiment, when a security device that operates with DC power is electrically connected to the power supply line L as the electrical device 1b, the security device is operated when the housekeeper goes out and the door is locked. It is possible to stop the operation of the security device when the householder returns home and the door is unlocked.

(Embodiment 5)
As shown in FIG. 6, the power distribution system according to the fifth embodiment is that the AC power supply block 8 and the DC power supply block 9 are provided in the outlets 2 b and 2 c, and thus the power distribution system according to the first embodiment. (See FIG. 1). In the present embodiment, the combination of the electric device 1a and the outlet 2b and the combination of the electric device 1b and the outlet 2c correspond to the electric device of the present invention. In addition, about the component similar to Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As described above, according to the present embodiment, the AC power supply block 8 and the DC power supply block 9 must be prepared as separate products by incorporating the AC power supply block 8 and the DC power supply block 9 in the outlets 2b and 2c. There is no.

(Embodiment 6)
As shown in FIG. 7, the power distribution system according to the sixth embodiment is provided with an AC power supply block 8 and a DC power supply block 9 built in the electric devices 1c and 1d. It is different from the system (see FIG. 1). The AC power supply block 8 and the DC power supply block 9 of the present embodiment are provided integrally with the main operation units 10c and 10d. In addition, about the component similar to Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The main operation unit 10c of the electric device 1c operates by being supplied with AC power. On the other hand, the main operation unit 10d of the electric device 1d operates by being supplied with DC power.

  As described above, according to the present embodiment, the AC power supply block 8 and the DC power supply block 9 are incorporated in the electric devices 1c and 1d and are provided integrally with the main operation units 10c and 10d, so that the AC power supply block 8 and There is no need to prepare the DC power supply block 9 as a separate product.

(Embodiment 7)
The seventh embodiment is different from the first embodiment in that the AC / DC electric device is electrically connected to the power supply line L. The electric device includes a main operation unit that operates regardless of whether AC power is supplied or DC power is supplied.

  As described above, according to the present embodiment, since the electric device can operate regardless of whether AC power is supplied to the electric device or DC power is supplied, a function for converting the type of supplied power is unnecessary. is there.

(Embodiment 8)
In the first embodiment, the AC power distribution board 3 is provided with an AC power detection unit 32 in order to detect the magnitude of AC power from the commercial power source AC and a power failure of the commercial power source AC. In this case, since communication is performed between the AC power detection unit 32 and the switching device 6, the AC power detection unit 32 and the switching device 6 need to have a communication function. Further, since the management device 5 detects the amount of DC power generated by the DC power supply 4 and performs communication between the management device 5 and the switching device 6, the management device 5 also needs to have a communication function.

  Therefore, in the power distribution system according to Embodiment 8, instead of the AC power detection unit 32, although not shown, an AC power detection unit having a function equivalent to that of the AC power detection unit 32 is provided in the switching device 6. Moreover, in this embodiment, it replaces with the function which detects the electric power generation amount of DC power in the DC power supply 4, and the switching apparatus 6 has a function which detects the illumination intensity of external light (sunlight).

  The switching device 6 of the present embodiment detects AC power (AC current, AC voltage) on the AC power feeding main line Lac by the AC power detection unit, and determines that AC power is no longer supplied from the commercial power supply AC ( When the commercial power supply AC fails, the power on the power supply line L is switched to the DC power from the DC power supply 4. Thereafter, when it is determined that the AC power is supplied again from the commercial power source AC (when the commercial power source AC recovers from the power failure), the switching device 6 switches the power on the power supply line L to the AC power from the commercial power source AC.

  In addition, when the illuminance of outside light is equal to or higher than a preset reference value, the switching device 6 determines that the amount of DC power generated by the solar battery 40 is large, and the power on the power supply line L is supplied from the DC power source 4. Switch to DC power.

  As described above, according to the present embodiment, it is not necessary to provide a communication function for performing communication between the AC distribution board 3 and the switching device 6 and between the management device 5 and the switching device 6. can do.

  Note that, as in the eighth embodiment, the configuration in which the switching device 6 has the function of detecting AC power on the AC power supply main line Lac and the function of detecting the illuminance of external light is the power distribution system according to the second to seventh embodiments. It can also be applied to.

1 is a configuration diagram of a power distribution system according to Embodiment 1. FIG. It is a block diagram which shows the structure of the switching apparatus which concerns on the same as the above. It is a block diagram of the principal part of the power distribution system which concerns on the same as the above. It is a block diagram which shows the principal part of the power distribution system which concerns on Embodiment 3. It is a block diagram which shows the structure of the switching apparatus which concerns on the same as the above. It is a block diagram of the principal part of the power distribution system which concerns on Embodiment 5. FIG. It is a block diagram of the principal part of the power distribution system which concerns on Embodiment 6. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a-1d Electric equipment 2, 2b, 2c Outlet 2a Power supply permission apparatus 21 Communication part (1st communication means)
22 Request part (request means)
3 AC distribution board (power connection means)
32 AC power detection unit (AC power detection means, power failure detection means)
4 DC power supply 5 Management device (DC power detection means)
6, 6a switching device 63 control unit (switching control means)
64 3rd communication part (2nd communication means)
7a, 7b Adapter 8 AC power supply block 80 Detection unit (detection means)
82 Control unit 9 DC power supply block 90 Detection unit (detection means)
92 Control Unit L Power Supply Line Lac AC Power Supply Main Line Ldc DC Power Supply Main Line AC Commercial Power Supply

Claims (11)

A power supply line to which electrical equipment is electrically connected;
Power connection means connected to a commercial power source;
A DC power source including a power generating device that generates DC power;
A switching device for switching the power on the power supply line between the AC power from the commercial power source and the DC power from the DC power source,
The switching device performs switching of power on the power supply line in response to occurrence of a specific event. DC power detection means for detecting the amount of DC power generated by the DC power supply,
The switching device switches power on the power supply line to DC power from the DC power supply when a detection value of the DC power detection means is equal to or greater than a preset DC power reference value. Item 1. The power distribution system according to item 1. Comprising a power failure detection means for detecting a power failure of the commercial power supply,
2. The power distribution system according to claim 1, wherein the switching device switches power on the power supply line to DC power from the DC power supply when a power failure of the commercial power supply is detected by the power failure detection means. . AC power detection means for detecting the magnitude of AC power from the commercial power supply,
The switching device switches the power on the power supply line to DC power from the DC power supply when the detection value of the AC power detection means is equal to or greater than a preset threshold value. Power distribution system. It has an illuminance sensor that detects the illuminance of outside light,
When the illuminance detection value of the illuminance sensor is greater than or equal to a preset illuminance reference value, the switching device switches the power on the power supply line to DC power, while the illuminance detection value of the illuminance sensor indicates the illuminance reference The power distribution system according to claim 1, wherein when the value is less than the value, the power on the power supply line is switched to AC power. It has an electric lock that locks and unlocks the door,
When the door is locked by the electric lock, the switching device switches the power on the power supply line to DC power, while when the door is unlocked by the electric lock, the power on the power supply line is changed to AC power. The power distribution system according to claim 1, wherein the power distribution system is switched to. A time measuring means for measuring the current time;
A storage means for storing an AC supply time zone for changing the power on the power supply line to AC power and a DC supply time zone for turning the power on the power supply line to DC power,
The switching device switches the power on the power supply line to the AC power from the commercial power source while the current time measured by the timing unit is included in the AC supply time zone, while the timing unit measures the time. 2. The power distribution system according to claim 1, wherein when the current time is included in the DC supply time period, the power on the power supply line is switched to DC power from the DC power supply.   The switching device switches a power supply state on the power supply line between supply of AC power from the commercial power supply, supply of DC power from the DC power supply, and stop of power supply. The power distribution system according to any one of claims 1 to 7. A power supply permission device that permits power supply on the power supply line;
The power supply permission device includes a first communication unit that communicates with the switching device, and sends an AC permission signal to the switching device when making a request to change the power on the power supply line to AC power. Controlling the first communication means to transmit, and when making a request to change the power on the power supply line to DC power, the first communication means to transmit a DC permission signal to the switching device. A control unit that controls the first communication unit to transmit a stop signal to the switching device when performing a request to stop power supply,
The switching device includes second communication means for performing communication with the power supply permission device, and when the AC permission signal is received by the second communication means, the power on the power supply line is exchanged with AC. When the DC permission signal is received by the second communication means, the power on the power supply line is changed to DC power, while when the stop signal is received by the second communication means, the power The power distribution system according to claim 8, further comprising switching control means for stopping power supply to the supply line. Detecting means for detecting the type of the supplied power whether the supplied power from the power supply line is AC power or DC power;
A power adapting means for stopping supply of the supplied power to the electric device when the type of the supplied power detected by the detecting means is different from the type of required power required by the electric device. The power distribution system according to any one of claims 1 to 9.   The power distribution system according to any one of claims 1 to 9, wherein the electric device is an AC / DC electric device.

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