JP2010017033A - Plug receptacle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plug receptacle capable of limiting the power supply to electric equipment connected thereto and capable of inhibiting a secondary disaster from happening when power is restored. <P>SOLUTION: A power management outlet 10 includes: a power restoration detection part 12 that detects the arrival of an AC current from a commercial power supply by power restoration from a power-off state; a switch part 13 that opens and closes an electrical path between the commercial power supply and an insertion port 11; and a control part 15 that opens the switch part 13 based on a predetermined setting. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a plug receptacle that can be disposed in a house or the like and can limit the supply of electric power to the electric device at the time of power recovery according to the type of electric device to be connected, and in particular, an emergency power source (backup power source). It is related with the plug receptacle suitably used corresponding to an electric power storage system provided with.

Ordinary outlets installed on the walls and floors of ordinary homes, etc. are used for electrical equipment connected by inserting an insertion plug into the outlet, causing a power failure or instantaneous voltage drop (hereinafter referred to as an instantaneous voltage drop). The power from the commercial power supply is supplied at all times, except when low) occurs. For this reason, electrical equipment connected to an electrical outlet can be powered from a commercial power source by restoring power even if a power failure occurs due to a natural disaster such as an earthquake, lightning, fire, typhoon, wind damage, water damage, or snow damage. Will be supplied again.
Therefore, electric devices that serve as heat sources such as heaters, dryers, and incandescent lamps cause fires in homes and the like due to the occurrence of natural disasters, and cause secondary disasters.

  Also, the conventional home appliance control network system incorporates equipment that can be accessed in a common form for each device by object processing using communication middleware in the controller. Note that each device has other devices that it needs and its operational data. Incorporate a linkage device into each device. Thereby, the power supply of the home appliance can be controlled remotely through the network (for example, see Patent Document 1).

However, since the conventional home appliance control network system is a system that performs power control by communicating with the home appliance itself, it is necessary to provide communication management means for each home appliance to be controlled. There is a problem that the cost of the system increases.
In addition, since the existing home appliances that do not have communication management means must be replaced with home appliances provided with communication management means, there is also a problem that the burden on the user increases.

On the other hand, the conventional power strip has a power plug for connecting to a distribution line, a plug insertion port for connecting a power plug of an electrical device, an IP network connection unit for connecting to an IP network, Electrical connection or disconnection between an IP address storage unit for storing an IP address for enabling connection from another device via an IP network, and a power plug for connecting to a distribution line and a plug insertion port And a control unit that controls the relay based on control information transmitted from another device connected via the IP network (see, for example, Patent Document 2).
JP 2001-86572 A JP 2006-114997 A

  However, the conventional power strip allows the user to manually turn on / off the electrical equipment connected to each plug outlet using the IP network. Thus, the power on / off determination is not automatically performed.

  Here, the existing power storage system switches from the commercial power supply to the emergency power supply when a power failure occurs, but all the electrical equipment that was supplied with power from the commercial power supply immediately before the power failure When generated, power is supplied from the emergency power source. For this reason, if the total operating current of multiple electric devices that are supplied with power from an emergency power supply and used at the same time exceeds the capacity of the emergency power supply, a desired voltage cannot be obtained and an indoor power failure occurs. Cause it to occur.

  Therefore, when a conventional power strip is used corresponding to the power storage system, the user of this power strip will receive power from the emergency power supply so as not to exceed the capacity of the emergency power supply when a power failure occurs. It is necessary to select a high-priority electrical device that needs to be supplied and manually turn off the power of the other low-priority electrical devices.

  However, in the power storage system, the time from the occurrence of a power failure to switching from the commercial power supply to the emergency power supply can be arbitrarily set, but is generally set to a very short time of about 10 ms. ing. For this reason, manually turning off the power of an electrical device with low importance has a problem of causing an indoor power failure in time for switching from a commercial power source to an emergency power source.

  The present invention has been made to solve the above-described problems, and a first object is to limit the supply of electric power to an electric device to be connected at the time of power recovery and to generate a secondary disaster. It is intended to provide a plug receptacle that can suppress the above-described problem.

  In addition, the second purpose is a plug in which the total operating current of the connected electrical equipment is less than the capacity of the emergency power supply even when a power failure occurs and the commercial power supply is switched to the emergency power supply. It provides a receiver.

  In the plug receptacle according to the present invention, a power recovery detection unit that detects the arrival of an alternating current from a commercial power source due to power recovery from a power failure state, and a switch unit that opens and closes an electrical path between the commercial power source and the outlet And a control unit that opens the switch unit based on a predetermined setting when the arrival of the alternating current is detected.

  Further, in the plug receiver according to the present invention, a phase change detection unit that detects a phase shift of an AC waveform when switching from a commercial power source to an emergency power source, and an electric circuit between the commercial power source, the emergency power source, and the outlet And a control unit that opens the switch unit based on a predetermined setting when a phase shift of the AC waveform is detected.

  In the plug receptacle according to the present invention, a power recovery detection unit that detects the arrival of an alternating current from a commercial power source due to power recovery from a power failure state, and a switch unit that opens and closes an electrical path between the commercial power source and the outlet When the arrival of the alternating current is detected, a control unit that opens the switch unit based on a predetermined setting is connected to be inserted and connected at the time of power recovery The supply of electric power to the electric device can be restricted, and the occurrence of a secondary disaster can be suppressed.

  Further, in the plug receiver according to the present invention, a phase change detection unit that detects a phase shift of an AC waveform when switching from a commercial power source to an emergency power source, and an electric circuit between the commercial power source, the emergency power source, and the outlet And a control unit that opens the switch unit based on a predetermined setting when a phase shift of the AC waveform is detected, and is inserted into the insertion port. The supply of electric power from the emergency power supply can be controlled according to the importance in using the connected electrical device.

(First embodiment of the present invention)
FIG. 1 is a block diagram showing a schematic configuration of a plug receiver according to the first embodiment, FIG. 2 is a block diagram showing a schematic configuration of another plug receiver according to the first embodiment, and FIG. 3 is FIG. 1 or FIG. It is explanatory drawing for demonstrating the reference | standard in classifying the household appliance by the drive measurement circuit shown in FIG.

  Here, the plug receptacle according to the present embodiment is a general term for a multi-tap, a table tap, a corner tap, a triple tap, a cord connector body, an outlet, and the like. In the following description, the storage space is less restrictive than a multi-tap that incorporates a control circuit, etc., which will be described later, inside the housing, and the power outlet is installed on the wall or floor of a house. A plug receptacle to which the invention is applied (hereinafter referred to as a power management outlet 10) will be described.

  In FIG. 1, the power management outlet 10 includes an insertion port 11, a power recovery detection unit 12, a switch unit 13, a power supply unit 14, and a control unit 15, which will be described later, and a measurement unit 18, which will be described later.

  The insertion port 11 is a part for inserting an insertion plug of an electric device (not shown) and connecting the electric device to the power management outlet 10. Although FIG. 1 shows an example in which one outlet 11 is provided for one power management outlet 10, a plurality of outlets are provided for one power management outlet 10. 11 may be provided. In this case, a switch unit 13 and a measurement unit 18 (to be described later) are respectively arranged corresponding to each insertion port 11 in the plurality of insertion ports 11. For example, when two outlets 11 are disposed for one power management outlet 10, as shown in FIG. Each of the measuring units 18 is disposed.

The power recovery detection unit 12 detects the arrival of an alternating current from the commercial power supply due to power recovery from the power failure state, and outputs the detection result to the control unit 15.
The switch unit 13 is, for example, an electromagnetic switch (relay) or a triac, and opens and closes an electric path between a commercial power source (residential distribution board 30) (not shown) and the outlet 11 based on a control signal from the control unit 15. To do. In addition, as the switch part 13, it is preferable to use an electromagnetic switch (relay) with a small calorific value compared with a triac.

  The power supply unit 14 is a power supply circuit that is branched and connected to an electric wire connecting the residential distribution board 30 and the insertion port 11, converts an alternating current into a direct current, and supplies the direct current to the control unit 15. In the present embodiment, the capacity required to supply power to the control unit 15 to be described later and maintain the switch unit 13 in the on state until a power failure or instantaneous drop occurs and power is restored. You may provide the capacitor | condenser which has as a component of the power supply part 14. FIG. In particular, this capacitor can prevent the switch unit 13 from being opened each time the instantaneous interruption occurs when the instantaneous interruption occurs intermittently.

When the power recovery detection unit 12 detects the arrival of the alternating current, the control unit 15 opens the switch unit 13 based on a predetermined setting set in a power importance level setting unit 15b described later.
Here, the predetermined setting is linked to the start of operation of the commercial power supply (recovery) for the insertion port 11 having a low importance level for supplying power from the power supply (hereinafter referred to as power supply importance level). Then, the corresponding switch unit 13 is opened. In addition, the corresponding switch unit 13 cannot be opened for the insertion port 11 having a high power importance level.

  Moreover, the control part 15 is information (electric current waveform, the average value of consumption current, a peak value, an effective value) which shows the energization state to the electric equipment connected to the outlet based on the value measured by the measurement part 18 mentioned later , Crest factor, waveform rate, time constant, energization time and peak position within the cycle, voltage frequency characteristics, phase difference of reciprocating alternating current, magnitude of high frequency component, magnitude of inductance component, voltage and current consumption A drive measurement circuit 15a for calculating a phase difference, a time difference, and a feature amount such as a power factor is provided.

  The drive measurement circuit 15a includes state detection means (not shown) that detects the state of the electrical device from a change in the energization state of the connected electrical device. In addition, the drive measurement circuit 15a includes a power consumption amount integration unit (not shown) that integrates the power consumption amount of the electric device from information indicating the energization state of the connected electric device, and the electric power integrated by the power consumption integration unit. A power consumption storage unit (not shown) that stores a value obtained by accumulating the power consumption of the device as the power consumption; Further, the drive measurement circuit 15 a includes a relay control unit (not shown) that controls the switch unit 13.

  In addition, the drive measurement circuit 15a includes a phase difference detection unit (not shown) that detects a phase difference caused by a reciprocating alternating current caused by a reciprocating propagation of an alternating current from a commercial power source between the insertion port 11 and the electric device, High-frequency component degree detection means (not shown) for detecting the magnitude is provided.

  In addition, the drive measurement circuit 15a uses the phase difference detection unit and the high frequency component level detection unit to detect the phase difference or when the phase difference is not detected but the high frequency component is large, the power importance setting unit 15b A power importance level determining means (not shown) that sets the power importance level to a low level for the power importance level setting unit 15b when the power importance level is set to a high level and the phase difference is not detected but the high frequency component is small. Is provided.

  Here, the phase difference due to the reciprocating alternating current is considered to depend on whether or not a copper-iron type transformer is built in the electrical equipment connected to the insertion port 11. In other words, since an electrical device with a built-in copper-iron type transformer has an inductance component due to the transformer, it receives power directly without processing the electrical device with a built-in switching power supply or the commercial power frequency instead of the copper-iron type transformer. It is considered that a phase difference due to a reciprocating alternating current occurs as compared with an electric device that performs the above.

In addition, the magnitude of the high frequency component is considered to depend on whether or not a switching power supply is built in the electrical equipment connected to the insertion port 11. That is, an electric device with a built-in switching power supply has a high-frequency component by converting a commercial power supply frequency (50 Hz or 60 Hz) into a high frequency of 1 kHz to several kHz by the switching power supply. It is considered that the value of the high frequency component is larger than that of an electric device that directly receives power without processing the power supply frequency.
Note that household electric appliances (hereinafter referred to as home appliances) among electric appliances can be broadly classified and defined as information appliances, antique appliances, retro appliances, and secondary disaster factor appliances.

  Information home appliances are home appliances with a built-in switching power supply and can be connected to a network by itself. An antique home appliance is a home appliance with a built-in switching power supply and cannot be connected to a network by itself. Retro home appliances are home appliances that cannot be connected to a network by themselves, and are home appliances that incorporate a copper-iron type transformer.

  Furthermore, secondary disaster factor home appliances are home appliances that cannot be connected to a network by themselves, and are home appliances that receive power directly without processing the commercial power supply frequency. That is, the secondary disaster factor home appliance is an electrical device that serves as a heat source (including a light source such as an incandescent light bulb) or a power source. When a power failure occurs due to a natural disaster and power is restored, It is a household appliance that causes secondary disasters such as fires and personal injury in houses due to occurrence or sudden start.

  Therefore, these home appliances are sorted as shown in FIG. 3 by the phase difference detection means, the high frequency component degree detection means, and the power source importance degree determination means of the drive measurement circuit 15a via the measurement unit 18 described later, The power importance is set to a high level for disaster-causing home appliances, and the power importance is set to a low level for home appliances other than secondary disaster-causing home appliances (information home appliances, antique home appliances, retro home appliances) .

  That is, an electrical device that is a heat source (including a light source such as an incandescent light bulb) or a power source is detected by detecting an electrical device that has no phase difference due to a reciprocating alternating current and has a small high-frequency component, and determines the importance of the power source to a low level (Secondary disaster factor home appliances) can be excluded from the target of supplying power from the commercial power source at the time of power recovery.

  The measurement part 18 is a current sensor (Current Transformer: CT) and / or a voltage sensor (Potential Transformer: PT), for example, and is caused by the use of an electric device connected by inserting an insertion plug into the insertion port 11. The current value and / or voltage value to be measured is measured, and the measured value is output to a drive measurement circuit 15a (to be described later) of the control unit 15. For this reason, the measurement unit 18 is disposed between the insertion port 11 and the switch unit 13 in the vicinity of the insertion port 11. In addition, when the measurement part 18 cannot detect the phase difference by a reciprocating alternating current accurately, it is possible to arrange | position an inductance measuring device. In this case, instead of the phase difference detection means of the drive measurement circuit 15a, an inductance component degree detection means for detecting the magnitude of the inductance component is provided. Moreover, the measurement part 18 may arrange | position and measure a high frequency measuring device instead of measuring a high frequency component value with a current sensor.

Next, the operation of the power management outlet 10 according to the present embodiment will be described.
First, a user of the power management outlet 10 inserts a plug of an electric device (not shown) into the insertion port 11 and connects the electric device to the power management outlet 10. Then, when the user of the power management outlet 10 uses the electric device, the drive measurement circuit 15a of the control unit 15 uses the power value of the electric device connected to the insertion port 11 based on the measurement value from the measurement unit 18. The importance level is determined, and the determination result is set in the power source importance level setting unit 15b.

  In addition, the power importance determination means of the drive measurement circuit 15a determines the power importance of the outlet 11 of the connected power management outlet 10 as a low level for the secondary disaster factor home appliance. Further, the power importance level determination means of the drive measurement circuit 15a is important for the power source of the outlet 11 of the connected power management outlet 10 for home appliances (retro home appliances, information home appliances, antique home appliances) other than the secondary disaster factor home appliances. Degree is determined as a high level.

  As described above, the power importance level is set for each insertion port 11 of the power management outlet 10, and the electrical equipment connected to the insertion port 11 of the power management outlet 10 is supplied with power from the commercial power source.

Next, it is assumed that a power failure or instantaneous drop occurs and power is restored.
First, the power recovery detection unit 12 of the power management outlet 10 detects the arrival of the alternating current from the commercial power supply due to power recovery from the power failure state, and outputs the detected current to the control unit 15.

  The control unit 15 controls the switch unit 13 based on the power importance level set in the power importance level setting unit 15b. That is, when the power importance level is low, the control unit 15 releases the excitation of the switch unit 13 and opens it. When the power importance level is high, the control unit 15 maintains the on state without releasing the excitation of the switch unit 13.

  In this way, even when a power outage or instantaneous drop occurs and power is restored, electrical equipment with a low power importance level, that is, secondary disaster factor home appliances, must be supplied with power from a commercial power source. The occurrence of secondary disasters such as fire can be suppressed.

  In the power management outlet 10 according to this embodiment, the phase difference detection means or the inductance component degree detection means, the high frequency component degree detection means, the power source importance degree judgment means, and the measurement unit 18 in the drive measurement circuit 15a of the control unit 15 are used. The power importance level set in the power importance level setting unit 15b is determined. Instead of providing the drive measurement circuit 15a and the measurement unit 18 of the control unit 15 in the power management outlet 10, the control board of the power management outlet 10 is provided. A configuration may be adopted in which a dip switch, a rotary switch, or the like is provided, and the power importance level can be manually selected for the power importance level setting unit 15b by the dip switch, the rotary switch, or the like.

  Moreover, in the plug receptacle according to the present embodiment, the power management outlet 10 as an outlet provided on the wall surface or floor surface of a house or the like has been described, but the outlet is provided at one end and the other end. The present invention may be applied to a multi-tap, a table tap, a corner tap, a triple tap, or a cord connector body provided with an insertion plug. Thereby, the effect of this invention can be show | played, without replacing | exchanging the normal electrical outlet existing in a house etc. to the power management outlet 10.

(Second embodiment of the present invention)
FIG. 4A is an explanatory diagram for explaining a detection method for detecting the presence / absence of a copper-iron type transformer, and FIG. 4B is an explanation for explaining a detection method for detecting the presence / absence of a switching power supply. Fig. 5 (a) is a frequency characteristic diagram of voltage by an electric device incorporating a copper-iron type transformer, Fig. 5 (b) is a frequency characteristic diagram of voltage by an electric device having a built-in switching power supply, and Fig. 5 (c) is It is a frequency characteristic figure of the voltage by the electric equipment of direct electric power reception. 4 and 5, the same reference numerals as those in FIGS. 1 to 3 denote the same or corresponding parts, and the description thereof is omitted.

The drive measurement circuit 15a includes a frequency characteristic detection unit (not shown) that detects the type of the electric device from the frequency characteristic of the voltage of the connected electric device.
Here, the frequency characteristics of the voltage by the electric device will be described with reference to FIGS.

As described above in the first embodiment, home appliances can be classified and classified as information home appliances, antique home appliances, retro home appliances, and secondary disaster factor home appliances.
First, the frequency characteristics of voltage by a retro home appliance incorporating a copper-iron type transformer will be described.

  The copper iron type transformer is represented by an equivalent circuit as shown in FIG. 4A, and the following formula (1) is established. In FIG. 4A and the following formula (1), L is the inductance of the copper iron type transformer, v (t) is a voltage applied to L, and i (t) is a current flowing through L. It is. Further, as can be seen from the following (1), when the current i (t) is a constant value (DC current), V = L is established.

ここで、図４（ａ）に示すモデルに、正弦波の交番電流を流した場合は、下記式（２）が成立する。なお、ｆは周波数である。

Here, when a sinusoidal alternating current is passed through the model shown in FIG. 4A, the following equation (2) is established. Note that f is a frequency.

この場合の電圧ｖ（ｔ）は、式（１）に式（２）を代入して、下記式（３）となる。

The voltage v (t) in this case becomes the following formula (3) by substituting the formula (2) into the formula (1).

そして、式（２）に示す電流ｉ（ｔ）の振幅と、式（３）に示す電圧ｖ（ｔ）の振幅とを比較することで、抵抗値に相当する値は、２πｆＬであることが分かる。

Then, by comparing the amplitude of the current i (t) shown in Equation (2) with the amplitude of the voltage v (t) shown in Equation (3), the value corresponding to the resistance value is 2πfL. I understand.

  Therefore, when the voltage value is measured by changing the frequency f with respect to the electric device incorporating the copper-iron type transformer, the waveform shown in FIG. 5A represented by a linear function (straight line) is obtained. I will draw.

Next, the frequency characteristics of voltage by an information home appliance or antique home appliance incorporating a switching power supply will be described.
The switching power supply 402 is represented by an equivalent circuit as shown in FIG. 4B, and converts the commercial power supply frequency into a high frequency by the following processing procedure.

First, an alternating current (AC) is input from the commercial power supply 20 to the switching power supply 402.
The alternating current is rectified by the rectifying bridge 402a and further smoothed by the electrolytic capacitor 402b on the primary side.

Moreover, the switching element 402c converts into an alternating current by switching (repeating ON / OFF of electricity).
The alternating current is transmitted as energy to the secondary side through the high-frequency transformer 402d.

  The high-frequency alternating current is rectified by the secondary-side diode 402e, further smoothed by the secondary-side electrolytic capacitor 402f, and output as a direct current (DC).

  The switching power supply 402 is feedback-controlled by the control circuit 402g so that the output voltage is kept constant, and performs switching adjustment by the switching element 402c.

  Here, the remarkable point of the switching power supply 402 is that the alternating current is once converted into a direct current by the rectifier bridge 402a. That is, since the inside of the switching power supply 402 is a DC circuit, frequency characteristics (FIG. 5 (a)) unlike a retro home appliance incorporating a copper iron type transformer do not occur.

  However, since the diode in the rectifier bridge 402a has a response characteristic with respect to the frequency, the diode corresponding to the commercial power supply frequency (50 Hz or 60 Hz) cannot follow when a frequency of several kHz or more is applied.

  Therefore, when the voltage value is measured by changing the frequency f with respect to an electric device having a built-in switching power supply, the V is up to a predetermined frequency (depending on the electric device (switching power supply) manufacturer, which is several kHz). A waveform as shown in FIG. 5B, which is a constant straight line and is represented by a curve having V = 0 as an asymptote from the predetermined frequency, is drawn.

Next, the frequency characteristics of the voltage by the secondary disaster factor home appliance that receives power directly will be described.
The secondary disaster factor home appliance can be considered as an equivalent circuit whose internal circuit is only a resistor.
Therefore, when the voltage value is measured by changing the frequency f for an electric device that directly receives power, a waveform as shown in FIG. 5C is drawn, in which V is a constant straight line.

  Therefore, the drive measurement circuit 15a uses the frequency characteristic detection unit to detect the frequency characteristic of the waveform as shown in FIGS. 5A and 5B, and to the power importance level setting unit 15b. Is set to a high level, and when the frequency characteristic of the waveform as shown in FIG. 5C is detected, the power importance level determination unit (not shown) sets the power importance level to the power level importance setting unit 15b. Is provided.

  The second embodiment is different from the first embodiment only in that a frequency characteristic detection unit is provided instead of the phase difference detection unit and the high frequency component degree detection unit of the drive measurement circuit 15a. Except for the function and effect of the detection unit and the power importance level determination unit, the same function and effect as those of the first embodiment are achieved.

(Third embodiment of the present invention)
FIG. 6 is a schematic configuration diagram showing an example in which the plug receiver according to the present embodiment is applied to a house equipped with an emergency power source, FIG. 7 is a block diagram showing a schematic configuration of the plug receiver according to the third embodiment, and FIG. (A) is explanatory drawing for demonstrating the shift | offset | difference of the phase of an alternating current waveform at the time of switching from a commercial power supply to an emergency power supply, FIG.8 (b) shows the setting content set to the power importance setting part shown in FIG. FIG. 9A is an explanatory diagram for explaining, FIG. 9A is an explanatory diagram illustrating an example of a web page displayed on the display screen of the information terminal device illustrated in FIG. 6, and FIG. 9B is a diagram of the information terminal device illustrated in FIG. It is explanatory drawing which shows the other example of the web page displayed on a display screen.

  In FIG. 6, a commercial power source 20 includes a home server 40, a home home energy management system (hereinafter referred to as HEMS 50), and a power source via a home distribution board 30 disposed in the home 100. Power is supplied to the management outlet 10.

  The home server 40 plays a central role in a home communication network (hereinafter referred to as a home LAN (Local Area Network)) as an IP (Internet Protocol) network, stores various data used in the home, Various data and services are provided to the electrical equipment in each room connected to the home LAN. The home LAN is not limited to wireless communication, but may be wired communication.

  The home server 40 is a gateway (Home Gateway: HGW) that connects a home LAN and an external network, and by operating an information terminal device 200 such as a mobile phone or a personal computer (PC), It is possible to control electrical devices connected to the home LAN via the Internet 300 as an IP network.

  HEMS50 is a system that uses information technology (IT) to improve the efficiency of energy consumption of home appliances in the home. Various electrical devices such as lighting and air conditioners (A / C) are installed in the HEMS50. Each electrical device is optimally automatically controlled according to indoor conditions (such as the presence or absence of people) and outdoor conditions (such as weather) that are connected via a home LAN. In particular, the HEMS 50 detects a power failure or an instantaneous drop based on the potential level of the residential distribution board 30, sends a command to the home server 40, and the home server 40 switches to operation from the commercial power supply 20 to the emergency power supply 60. .

Since the home server 40 and the HEMS 50 need to be operated at all times, power is always supplied from the commercial power supply 20 or the emergency power supply 60.
As the emergency power source 60, for example, as shown in FIG. 6, a lithium ion (Li-ion) secondary battery, which is a power source of an electric vehicle 61b connected via a battery 61a, or a wind / solar hybrid power generation system 62 lithium ion (Li-ion) secondary batteries, polymer electrolyte fuel cells (PEFC) 63, and the like are conceivable.

  In addition, when using the lithium ion (Li-ion) secondary battery of the electric vehicle 61b as the emergency power source 60, the power supplied from the commercial power source 20 is taken in and charged, and a power failure or an instantaneous drop occurs. Moreover, it functions as an emergency power source 60.

  6 shows a configuration in which a normal outlet 70 is also arranged in the house 100 in addition to the power management outlet 10 according to the present embodiment. However, the power management outlet 10 according to the present embodiment functions. In order to achieve this, it is not always necessary to provide a normal outlet 70.

  In FIG. 7, the power management outlet 10 includes an insertion port 1, a phase change detection unit 2, a switch unit 3, a power supply unit 4 and a control unit 5, which will be described later, and an IP network connection unit 6, which will be described later. An IP address storage unit 7, a measurement unit 8, and an open / close state storage unit 9 are provided.

The insertion port 1 is a part for inserting the insertion plug 401 of the electric device 400 and connecting the electric device 400 to the power management outlet 10. FIG. 7 shows an example in which two outlets 1 are provided for one power management outlet 10, but one or three or more outlets are provided for one power management outlet 10. The insertion port 1 may be provided. In this case, a switch unit 3 and a measurement unit 8 to be described later are respectively arranged corresponding to each insertion port 1 in one or a plurality of insertion ports 1.
The phase change detection unit 2 detects a phase shift of the AC waveform when the commercial power supply 20 is switched to the emergency power supply 60, and outputs the detection result to the control unit 5.

The phase shift of the AC waveform is as shown in FIG. 8A until the normal AC waveform from the commercial power source 20 is switched from the commercial power source 20 to the emergency power source 60 due to the occurrence of a power failure or instantaneous drop. This occurs because the supply of power is interrupted during the period.
The switch unit 3 is, for example, an electromagnetic switch (relay) or a triac, and opens and closes an electric circuit between the commercial power source 20 and the emergency power source 60 and the outlet 1 based on a control signal from the control unit 5.

  The power supply unit 4 is a power supply circuit that is branched and connected to an electric wire connecting the residential distribution board 30 and the insertion port 1, converts an alternating current into a direct current, and supplies the direct current to the control unit 5. In the present embodiment, power is supplied to the control unit 5 to be described later and the switch unit 3 is turned on until a power failure or instantaneous drop occurs and the commercial power source 20 is switched to the emergency power source 60. A capacitor having a capacity necessary for maintenance may be provided as a component of the power supply unit 4. In particular, this capacitor opens the switch unit 3 every time there is a short interruption (for example, 10 ms or less) that does not switch from the commercial power supply 20 to the emergency power supply 60 intermittently. Can be suppressed.

  The IP network connection unit 6 is a part for connecting the power management outlet 10 to the home LAN. For example, the IP network connection unit 6 is connected to the home server 40 via a home LAN such as a LAN cable or a router / hub. The IP network connection unit 6 does not need to be directly connected to the home server 40 via the home LAN, but uses an existing PLC product that uses power line communication (hereinafter referred to as PLC). The slave unit of the PLC product may be connected to the IP network connection unit 6 via a LAN cable, and the master unit of the PLC product may be connected to the home server 40 via a LAN cable or a router / hub. In this way, using the PLC product replaces the normal outlet 70 in which the LAN cable passes through the wall or under the floor of the house or the like and is not laid in advance to the insertion port with the power management outlet 10 according to the present embodiment. It is effective in the case.

  The IP address storage unit 7 assigns an IP address for enabling connection from the other devices such as the home server 40 and the information terminal device 200 to the power management outlet 10 via the home LAN and the Internet 300. The part to remember.

  The measuring unit 8 is, for example, a current sensor (Current Transformer: CT) and / or a voltage sensor (Potential Transformer: PT), and uses the electric device 400 connected by inserting the plug 401 into the plug 1. The current value and / or voltage value resulting from the above are measured, and the measured value is output to a drive measurement circuit 5a described later of the control unit 5. For this reason, the measurement unit 8 is disposed between the insertion port 1 and the switch unit 3 in the vicinity of the insertion port 1. In addition, the measurement part 8 may be the structure only of a current sensor, when a power factor is not considered.

  The open / close state storage unit 9 is a part that stores the open / close state of the switch unit 3 in response to a control signal from the control unit 5 for turning on or off the switch unit 3. When power is restored, the control unit 5 to be described later reads the latest information on the open / closed state of the switch unit 3 stored in the open / closed state storage unit 9, and switches on or opens the switch unit 3 based on the latest information. .

When the phase change detection unit 2 detects a phase shift of the AC waveform, the control unit 5 opens the switch unit 3 based on a predetermined setting set in a power importance level setting unit 5b described later.
Here, for example, as shown in FIG. 8B, the predetermined setting corresponds to the insertion port 1 having a low power importance level in conjunction with the start of the operation of the emergency power supply 60. The switch unit 3 is opened. In addition, the corresponding switch unit 3 cannot be opened for the insertion port 1 having a high power importance level. Further, for the insertion port 1 having a medium power importance (not high or low), the corresponding switch unit 3 is opened based on a predetermined condition. This predetermined condition is, for example, after a lapse of a predetermined time (for example, 10 minutes) from the start of operation of the emergency power supply 60, or when the capacity of the emergency power supply 60 reaches a predetermined remaining amount (for example, 50% of the maximum capacity). And a command from the HEMS 50, a control signal from the information terminal device 200 operated by a user of the power management outlet 10, and the like.

  The power importance level is not limited to three levels of high level, medium level, and low level, but may be divided into at least two levels of high level and low level, and the medium level may be further subdivided.

  In addition, the predetermined setting for the insertion port 1 having a low power importance level does not immediately open the corresponding switch unit 3 in conjunction with the start of operation of the emergency power supply 60, but the emergency power supply 60 starts operation. When the emergency power supply 60 goes down when the total current used by the electrical device 400 connected to the emergency power supply 60 exceeds the capacity of the emergency power supply 60, the power supply is less important. The setting may be such that the switch unit 3 corresponding to the mouth 1 is opened.

  In this case, the emergency power source 60 that is down is restarted at a predetermined interval, and while the emergency power source 60 is down, power is supplied from the emergency power source 60 to the control unit 5. In order to stop, excitation of the relay which is the switch unit 3 is released, and the switch unit 3 is opened regardless of the importance of the power source of the insertion port 1. In contrast, the power management outlet 10 according to the present embodiment is stored in the power importance and open / closed state storage unit 9 set in the power importance setting unit 5b when the emergency power supply 60 that is down is restarted. Each switch unit 3 is controlled corresponding to the latest information on the open state of the switch unit 3.

  That is, when the switch unit 3 before being down is in the open state, or when the switch unit 3 is in the on state and the power importance is low, when the down emergency power supply 60 is restarted, the switch unit 3 is in the open state. To maintain. When the switch unit 3 before being down is in the on state and the power importance is intermediate or high, the switch unit 3 is turned on when the down emergency power supply 60 is restarted.

  Since the power supply unit 4 includes the capacitor described above, the power supply unit 4 can function as a backup power supply for the control unit 5 until the emergency power supply 60 is restarted, while the emergency power supply 60 is down. However, it is possible to maintain the switch-on state of the switch unit 3 without releasing the excitation of the relay that is the switch unit 3. And when the emergency power supply 60 which went down restarts, only the switch part 3 corresponding to the insertion port 1 with low power importance is opened.

The control unit 5 includes a communication circuit 5c for connecting to the home LAN and the Internet 300 via the IP network connection unit 6 for communication.
The communication circuit 5 c connects to the home LAN and the Internet 300 using the IP address stored in the IP address storage unit 7.

  Moreover, the control part 5 is the information (Current waveform, average value of consumption current, peak value, effective value) which shows the electricity supply state to the electric equipment 400 connected to the insertion port 1 based on the value measured by the measurement part 8. And a drive measurement circuit 5a for calculating a crest factor, a waveform rate, a time constant, an energization time and a peak position within a cycle, a phase difference between voltage and current consumption, and a feature quantity such as a time difference and a power factor.

  The drive measurement circuit 5a includes state detection means (not shown) that detects the state of the electrical device 400 from a change in the energization state of the connected electrical device 400. Further, the drive measurement circuit 5a is integrated by a power consumption integrating unit (not shown) that integrates the power consumption of the electrical device 400 from information indicating the energization state of the connected electrical device 400, and the power consumption integrating unit. And a power consumption storage unit (not shown) that stores a value obtained by accumulating the power consumption of the electrical device 400 as the power consumption. Furthermore, the drive measurement circuit 5a includes a relay control unit (not shown) that controls the switch unit 3 based on the control information acquired by the communication circuit 5c.

  In addition, the control unit 5 provides a web page for providing various information to other devices such as the home server 40 and the information terminal device 200 and acquiring control information from these other devices. A web server unit 5d provided to the apparatus is provided.

  That is, the control unit 5 not only autonomously controls the switch unit 3 according to the power importance level preset in the power importance level setting unit 5b, but also other devices such as the home server 40 and the information terminal device 200. The switch unit 3 can also be controlled based on the control information transmitted from.

  The web page is provided to other devices using a WWW (World Wide Web) system that is standardly used in an IP network such as the Internet or an intranet. A web browser which is application software for browsing pages is provided. This web browser is generally widespread, and is normally installed in a personal computer or a mobile phone connected to an IP network.

  For example, as shown in FIG. 9A, the web page 210 provided from the web server unit 5d to the information terminal device 200 is designated to switch on or open the switch unit 3 (power ON / OFF management). Radio button 211, transmission button 212 for transmitting the content designated by radio button 211 to power management outlet 10 as control information, information 213 indicating the control state (current state) of switch unit 3 by control unit 5, and driving Information 214 indicating the power consumption (W / h) stored in the power consumption storage means of the measurement circuit 5a is displayed.

  The web page 210 also includes a radio button 215 that specifies whether to enable or disable a state holding function, which will be described later, a radio button 216 that specifies a power importance level, a radio button 215, and contents specified by the radio button 216. Is displayed as control information to the power management outlet 10.

  Here, when the state holding function is designated as valid, as described above, when the power failure or the instantaneous drop occurs and the control unit 5 recovers the power, the switch unit stored in the open / close state storage unit 9 On the basis of the latest information on the open / close state of 3, the switch unit 3 is turned on or opened.

  In addition, when the state holding function is designated as invalid, even if the control unit 5 recovers power, the switch unit 3 is not subjected to a power failure or an instantaneous drop because the relay that is the switch unit 3 is not excited. The open state is maintained from occurrence.

  When a plurality of outlets 1 are provided for one power management outlet 10, or when one or a plurality of power management outlets 10 are provided at a plurality of locations in the house 100. Can grasp the use state in each insertion port 1 by the web page 220 as shown in FIG.

  As shown in FIG. 9B, the web page 220 provided from the web server unit 5d to the information terminal device 200 is set to the same level among the power importance levels set in the power importance level setting unit 5b. In addition, a collective shut-off button 221 for collectively shutting off the supply of power and a collective power-recovery button 222 for collectively restoring power are displayed on the insertion port 1.

  Also, on the web page 220, a text box 223 for inputting and displaying an IP address for connecting to the IP network by the IP network connection unit 6, and a registration button for registering the setting value input in the text box 223 224 is provided. Also, identification information (for example, “kitchen outlet 1”, etc.) for making the corresponding outlet 1 easily identified by the user of the power management outlet 10 in correspondence with the IP address entered in the text box 223. A text box 225 for inputting and displaying, and a registration button 226 for registering the identification information input in the text box 225 are provided.

  In addition, in the web page 220, by inputting a pre-registered IP address or identification information, the power ON / OFF state (corresponding to the insertion port 1 corresponding to the input IP address or identification information). Displays the open / closed state of the switch unit 3), the importance level of the power supply, and the power consumption (W / h) of the electrical device 400 connected to the insertion port 1, and corresponds to all input IP addresses or identification information The total power consumption is displayed.

Next, the operation of the power management outlet 10 according to the present embodiment will be described.
In the following description, a case will be described in which only the power management outlet 10 according to the present embodiment is provided as the outlet provided in the house 100 shown in FIG. In addition, when the normal outlet 70 is disposed in the house 100, the power supply importance degree is set to a medium level in consideration of the current used by the electric device 400 connected to the normal outlet 70. It is necessary to adjust the number (switch the importance level of the power source of the insertion port 1 from a medium level to a low level).

  First, the user of the power management outlet 10 uses the information terminal device 200 to respond to the type of the electrical device 400 connected to the insertion port 1 of the power management outlet 10 from the web page 210 shown in FIG. Thus, the power ON / OFF management, state maintenance, and power importance level for each insertion port 1 of each power management outlet 10 are set. Here, as an initial setting, it is assumed that the power ON / OFF management is set to ON and the state holding is set to be valid.

  As for the importance of the power source, for example, a power management outlet connected to the electric device 400a which does not cause much trouble in daily life even if a refrigerator, a toilet seat with a shower washing function, a television, an air conditioner, etc. cannot be used. The power importance of 10 insertion ports 1 is set as a low level (A system). For the electric device 400c that has a great influence on other devices due to the inability to use a server or the like, the power importance level of the outlet 1 of the connected power management outlet 10 is set to a high level (C system). In addition, for the electric device 400b that does not need to set the power importance level of a personal computer or a video to a low level or a high level, the power importance level of the outlet 1 of the connected power management outlet 10 is set to a medium level (B system). Set as.

  In addition, the user of the power management outlet 10 includes the total usage current (including the usage currents of the home server 40 and the HEMS 50) of the electric device 400b having a medium power importance level and the electric device 400b having a high power importance level. ) Is adjusted so that the capacity of the emergency power supply 60 does not exceed the capacity, but the number of the insertion ports 1 having the power supply importance level as a medium level is adjusted.

  Thus, the power importance is set for each outlet 1 of the power management outlet 10, and the electric device 400 connected to the outlet 1 of the power management outlet 10 is supplied with power from the commercial power supply 20. .

Next, a case where a power failure or a sag occurs is assumed.
When a power outage or a voltage sag occurs, the HEMS 50 detects a power outage or a voltage sag based on the potential level of the residential distribution board 30 and sends a command to the home server 40. Switch to operation of emergency power supply 60.

  Then, the phase change detection unit 2 of the power management outlet 10 detects the phase shift of the AC waveform as shown in FIG. 8A due to the switching from the commercial power supply 20 to the emergency power supply 60, and the control unit 5 is output.

  The control unit 5 controls the switch unit 3 based on the power importance level set in the power importance level setting unit 5b. That is, when the power importance level is low, the control unit 5 releases the excitation of the switch unit 3 and opens it. When the power importance level is high, the control unit 5 maintains the on state without releasing the excitation of the switch unit 3.

When the power importance level is medium level, the control unit 5 counts the elapsed time from the start of operation of the emergency power supply 60, and after a predetermined time (for example, 10 minutes) has elapsed, the control unit 5 The switch unit 3 is de-energized and released. However, when the commercial power source 20 is restored before the predetermined time has elapsed, the elapsed time counted by the control unit 5 is reset.
Here, the control unit 5 also outputs a control signal to the switch unit 3 to the open / close state storage unit 9 so that the open / close state storage unit 9 acquires information on the open / close state of the switch unit 3.

  Thus, immediately after the occurrence of a power failure or a momentary drop and switching from the commercial power supply 20 to the operation of the emergency power supply 60, the power from the emergency power supply 60 is applied to the electrical device 400a having a low power importance level. Is not supplied, and the total current used in the house 100 can be stored in the capacity of the emergency power supply 60.

  That is, the total use current (including the use currents of the home server 40 and the HEMS 50) of the electric device 400b having the medium power importance level and the electric device 400b having the high power importance level is the capacity of the emergency power supply 60. Therefore, the occurrence of an indoor power outage can be prevented.

  If the commercial power supply 20 is not recovered (recovered) and the emergency power supply 60 is operated for a long time, the amount of charge of the emergency power supply 60 approaches zero. Therefore, the control unit 5 of the power management outlet 10 switches the switch unit corresponding to the insertion port 1 having a medium power importance level after a lapse of a predetermined time (here, 10 minutes) from the start of operation of the emergency power supply 60. 3 is released. Thereby, it is possible to extend the time during which power can be supplied from the emergency power supply 60 to the electrical device 400b (including the home server 40 and the HEMS 50) having a high power importance level.

  Note that, when a predetermined amount of time (in this case, 10 minutes) has passed since the emergency power supply 60 started operating, if the remaining charge amount of the emergency power supply 60 is sufficient, the power supply importance level is set to a medium level according to a command of the HEMS 50. The opening of the switch unit 3 corresponding to a certain insertion port 1 can be interrupted.

  When the emergency power supply 60 is switched to the operation of the commercial power supply 20 and power is restored, the control unit 5 of the power management outlet 10 switches the switch unit stored in the open / close state storage unit 9 based on a command from the HEMS 50. The latest information on the open / close state of 3 is read out, and the open / close state of the switch unit 3 is returned to the state before the power failure or instantaneous drop based on the latest information. Thereby, when the user of the power management outlet 10 returns to the commercial power source 20, the switch of the power management outlet 10 is operated so that the information terminal device 200 is operated to be in an open / closed state before a power failure or a voltage sag. It is possible to eliminate the complexity of loading or unloading the units 3.

  As described above, in the power management outlet 10 according to the present embodiment, when a power failure or an instantaneous drop occurs and the operation is switched from the commercial power supply 20 to the emergency power supply 60, the preset is set for each outlet 1 in advance. Depending on the importance of the power source, the switch unit 3 is opened so that the total use current of the electric device 400 to which power is supplied from the emergency power source 60 does not exceed the capacity of the commercial power source 20. The occurrence of a power failure can be prevented.

  In addition, although the power management outlet 10 according to the present embodiment includes the measurement unit 8 and the phase change detection unit 2, the phase change detection unit is provided with the function of the phase change detection unit 2 in the measurement unit 8. 2 may be deleted. As a result, the manufacturing cost of the power management outlet 10 can be reduced, and the area where the phase change detection unit 2 has been arranged can be used. Therefore, the degree of freedom in layout in which other circuit elements are arranged is increased. Can do.

  Further, in the power management outlet 10 according to the present embodiment, one IP address stored in the IP address storage unit 7 is set for one power management outlet 10, but one house 100 One IP address is set for (home server 40) and n (m is an integer of 1 or more) power management outlets 10 arranged in one house 100 (n is 2). The switch unit 3 of the above integers may be managed by one IP address.

  In this case, the home server 40 receives a control signal from another device, and the home server 40 sends a control signal (relay to the switch unit 3 corresponding to the insertion port 1 of the corresponding power management outlet 10). Control signal).

  Therefore, the power management outlet 10 does not need to include the IP address storage unit 7 and a relay control signal is transmitted to the home LAN connecting the IP network connection unit 6 and the home server 40 instead of the IP address signal. It will be.

  In addition, in this embodiment, although demonstrated using the example which provided the power management outlet 10 in the house 100 provided with the home server 40 and HEMS50, with respect to the house etc. which are not provided with the home server 40 and HEMS50 However, the effect by the power management outlet 10 which concerns on this embodiment can be show | played.

  In this case, the drive measurement circuit 5a, the communication circuit 5c, the web server unit 5d, the IP network connection unit 6, the IP address storage unit 7, and the measurement unit 8 of the control unit 5 are replaced with the power management outlet 10 instead of the power supply. A dip switch, a rotary switch, or the like is provided on the control board of the management outlet 10, and the power importance level can be manually selected for the power importance level setting unit 5b by the dip switch, the rotary switch, or the like.

  Further, in the power management outlet 10 according to the present embodiment, as in the first embodiment described above, the drive measurement circuit 15a (drive in the present embodiment) of the control unit 15 (the control unit 5 in the present embodiment). In the measurement circuit 5a), the phase difference detection means or the inductance component degree detection means, the high frequency component degree detection means, the power source importance level determination means, and the measurement unit 18 (in this embodiment, the measurement unit 8) are used to determine the power source importance level setting unit 15b ( In this embodiment, the power importance level set in the power importance level setting unit 5b) may be determined.

  Further, in the power management outlet 10 according to the present embodiment, as in the second embodiment described above, the drive measurement circuit 15a (drive in the present embodiment) of the control unit 15 (the control unit 5 in the present embodiment). The frequency characteristic detection means, the power importance level determination means in the measurement circuit 5a), and the measurement unit 18 (in the present embodiment, the measurement unit 8) allow the power importance level setting unit 15b (in the present embodiment, the power importance level setting unit 5b). The importance level of the power supply to be set may be determined.

  In particular, in the first embodiment and the second embodiment described above, the power importance for home appliances (retro home appliances, information home appliances, antique home appliances) other than secondary disaster factor home appliances was set to a high level. The power importance level determination unit of the drive measurement circuit 5a may determine the power importance level of the retro home appliance to a medium level and set the power importance level setting unit 5b.

It is a block diagram showing a schematic structure of a plug receptacle concerning a 1st embodiment. It is a block diagram which shows schematic structure of the other plug receptacle which concerns on 1st Embodiment. It is explanatory drawing for demonstrating the reference | standard in classifying the household appliance by the drive measurement circuit shown in FIG. 1 or FIG. (A) is explanatory drawing for demonstrating the detection method for detecting the presence or absence of a copper iron type | mold transformer, (b) is explanatory drawing for demonstrating the detection method for detecting the presence or absence of a switching power supply. (A) is a frequency characteristic diagram of a voltage by an electric device incorporating a copper-iron type transformer, (b) is a frequency characteristic diagram of a voltage by an electric device having a built-in switching power supply, and (c) is a voltage frequency characteristic by an electric device receiving power directly. It is a frequency characteristic figure. It is a schematic block diagram which shows an example which applied the plug receiver which concerns on this embodiment to the house provided with the emergency power supply. It is a block diagram which shows schematic structure of the plug receptacle which concerns on 3rd Embodiment. (A) is explanatory drawing for demonstrating the shift | offset | difference of the phase of an alternating current waveform at the time of switching from a commercial power supply to an emergency power supply, (b) demonstrates the setting content set to the power supply importance level setting part shown in FIG. It is explanatory drawing for. (A) is explanatory drawing which shows an example of the web page displayed on the display screen of the information terminal device shown in FIG. 6, (b) is another web page displayed on the display screen of the information terminal device shown in FIG. It is explanatory drawing which shows an example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Socket 2,12 Phase change detection part 3,13 Switch part 4,14 Power supply part 5,15 Control part 5a, 15a Drive measurement circuit 5b, 15b Power supply importance level setting part 5c Communication circuit 5d Web server part 6 IP network connection unit 7 IP address storage unit 8, 18 Measurement unit 9 Open / close state storage unit 10 Power management outlet 20 Commercial power supply 30 Residential distribution board 40 Home server 50 HEMS
60 Emergency power supply 61a Battery 61b Electric vehicle 62 Wind / solar hybrid power generation system 70 Outlet 100 Housing 200 Information terminal device 210, 220 Web page 211, 215, 216 Radio button 212 Send button 213, 214 Information 217 Decision button 221 Collective shut-off Button 222 Collective power recovery button 223, 225 Text box 224, 226 Registration button 300 Internet 400, 400a, 400b, 400c Electric equipment 401 Plug plug 402 Switching power supply 402a Rectification bridge 402b, 402f Electrolytic capacitor 402c Switching element 402d High-frequency transformer 402d
402e Diode 402e
402g Control circuit

Claims (9)

In the plug receptacle for supplying electric power from the commercial power supply to the electric device, having an insertion port connected by inserting the plug of the electric device,
A power recovery detection unit for detecting the arrival of an alternating current from the commercial power supply by power recovery from a power failure state;
A switch unit that opens and closes an electric path between the commercial power source and the outlet;
When detecting the arrival of the alternating current, based on a predetermined setting, a control unit that opens the switch unit,
A plug receptacle characterized by comprising. The plug receiver according to claim 1,
Provided in the vicinity of the insertion port, comprising a measuring unit for measuring an inductance component of the electric device or an alternating current from the commercial power source and the electric device;
Based on the inductance component of the electrical device or the alternating current from the commercial power source and the electrical device, the control unit determines whether the magnitude of the inductance component of the electrical device or the alternating current from the commercial power source is the insertion port and the electrical device. A plug receptacle characterized by detecting a phase difference due to the reciprocating alternating current caused by reciprocating between them, and performing the predetermined setting based on the magnitude or phase difference of the inductance component. In the plug receiver according to claim 1 or 2,
Provided in the vicinity of the insertion port, comprising a measurement unit for measuring high-frequency components of the electrical equipment,
The plug receiver, wherein the control unit detects the magnitude of the high-frequency component of the electrical device based on the high-frequency component of the electrical device, and performs the predetermined setting based on the magnitude of the high-frequency component. The plug receiver according to claim 1,
It is arranged near the insertion port, and includes a measuring unit for measuring the voltage by changing the commercial power supply frequency,
The plug receiver, wherein the control unit detects a frequency characteristic of a voltage by the electric device based on the measured voltage, and performs the predetermined setting based on the frequency characteristic. In a plug receiver for supplying electric power from a commercial power supply or an emergency power supply, having an insertion port that is connected by inserting an insertion plug of the electric equipment,
A phase change detector that detects a phase shift of an AC waveform when the commercial power supply is switched to the emergency power supply;
A switch unit for opening and closing an electric circuit between the commercial power supply and the emergency power supply and the insertion port;
When detecting a shift in the phase of the AC waveform, based on a predetermined setting, a control unit that opens the switch unit;
A plug receptacle characterized by comprising. In the plug receiver according to claim 5,
An open / close state storage unit for storing an open / close state of the switch unit;
A plug receptacle characterized in that, when the power is restored, the control unit turns on or opens the switch unit based on the open / close state of the switch unit stored in the open / close state storage unit. In the plug receiver according to claim 5 or 6,
The predetermined setting is a setting to open the switch unit in conjunction with the start of operation of the emergency power source when the power source importance level is low, and when the power source importance level is high, the switch unit A plug receptacle characterized in that it is set so as not to be opened, and is configured to open the switch unit based on a predetermined condition when the power importance level is intermediate. In the plug receiver according to any one of claims 5 to 7,
An IP network connection for connecting to the IP network;
An IP address storage unit for storing an IP address for enabling connection from another device via the IP network;
With
The plug receptacle, wherein the control unit turns on or opens the switch unit based on a control signal transmitted from the other device via the IP network. In the plug receiver according to claim 8,
Provided in the vicinity of the insertion port, comprising a measurement unit for measuring the current used of the electrical equipment,
The other device transmits a control signal for controlling the open / close state of the switch unit to the IP network connection unit according to the capacity of the emergency power source based on the current used by the electrical device. ,
The plug receptacle, wherein the control unit turns on or opens the switch unit based on a control signal received by the IP network connection unit.

Images