WO2017072848A1

WO2017072848A1 - Power supply device and power supply method

Info

Publication number: WO2017072848A1
Application number: PCT/JP2015/080194
Authority: WO
Inventors: 裕久保山; 川口　仁
Original assignee: 三菱電機株式会社
Priority date: 2015-10-27
Filing date: 2015-10-27
Publication date: 2017-05-04
Also published as: JPWO2017072848A1; JP6391849B2

Abstract

A technique disclosed in the present description relates to a power supply device and a power supply method capable of more safely switching to autonomous operation using an internal power supply. The power supply device supplies power to a load 2 and is provided with: an internal power supply (3) for storing power; a control unit 6 for controlling a power supply path to the load; a disaster monitoring unit 9 for outputting disaster information that is information about the presence or absence of the occurrence of a disaster; and a voltage monitoring unit (7) for outputting voltage information that is information about the voltage of an external power supply (1) that is a commercial power system connected to the power supply device. The control unit selects either the power supply path from the external power supply to the load or the power supply path from the internal power supply to the load on the basis of the disaster information and the voltage information.

Description

Power supply apparatus and power supply method

The technology disclosed in this specification relates to a power supply apparatus and a power supply method.

In recent years, a power generation system that uses natural energy such as solar power generation, a system that charges low-priced low-cost power to a storage battery, and supplies the power stored in the storage battery to a load in a house during the day and consumes it. Is spreading.

When a commercial system (commercial power system) fails, a home appliance can be used even during a power failure by supplying the power stored in the storage battery to a load in the house. Here, in the case of performing a self-sustained operation using an internal power supply in the event of a power failure in a commercial system, for example, two mechanical switching points or one switching point 1 according to the grid connection regulations (JEAC 9701-2012, NEC Association) It is necessary to install one place and one opening / closing place by manual operation.

In the above-mentioned system, in a self-sustaining operation when a power failure occurs, it was assumed that power is supplied only to a specific load. On the other hand, the system which supplies electric power to the load in the house similar to what was used at the time of grid connection also at the time of a power failure is proposed.

For example, according to Patent Document 1, in the power supply system, when the commercial power supply source fails, the system interconnection relay is changed from “closed” to “open” to disconnect the commercial power supply source. Then, a self-supporting operation is performed by the power storage unit. Further, the operation of the solar power generation unit and the fuel cell power generation unit is performed using the power source of the power storage unit as a reference power source.

This makes it possible for the photovoltaic power generation unit and the fuel cell power generation unit to generate power in a self-sustained operation as in the case of grid connection.

Also, for example, Patent Document 2 discloses a technique for detecting that a commercial system has lost power and switching to independent operation. As a result, when a commercial power failure occurs, it is possible to switch to a self-sustained operation and automatically supply power to the load.

Japanese Unexamined Patent Publication No. 2011-188607 International Publication No. 2014/068875

According to the above technology, in the event of a power failure in the commercial system due to a disaster such as an earthquake, autonomous operation is automatically started and power is supplied. At this time, the safety of the load, wiring, distribution board, or power supply device in the house is not confirmed. Therefore, if a defect occurs in these, there is a possibility that it may lead to a secondary disaster caused by the defect.

Even if the power supply system does not automatically start autonomous operation, it may start autonomous operation by remote control from a host controller such as HEMS (Home Energy Management System) via the communication network. Had the same problem as above.

The technology disclosed in the present specification is for solving the above-described problems, and relates to a power supply apparatus and a power supply method that can switch to independent operation by an internal power source more safely. It is.

A power supply device according to an aspect of the technology disclosed in the present specification is a power supply device that supplies power to a load, and includes an internal power source that stores power, and a control unit that controls a power supply path to the load. A disaster monitoring unit that outputs disaster information that is information on whether a disaster has occurred, and a voltage monitoring unit that outputs voltage information that is information about the voltage of an external power supply that is a commercial power system connected to the power supply device. And the control unit selects one of a power supply path from the external power supply to the load and a power supply path from the internal power supply to the load based on the disaster information and the voltage information. To do.

A power supply method according to an aspect of the technology disclosed in the present specification is a power supply method that supplies power to a load by switching between an internal power source that stores power and an external power source that is a commercial power system. Power supply from the external power source to the load based on disaster information that is output from the unit and information on the occurrence of a disaster and voltage information that is information on the voltage of the external power source output from the voltage monitoring unit One of a path and a power supply path from the internal power supply to the load is selected.

According to such a configuration, even when an abnormality of the external power supply is detected based on the voltage information, the possibility of a failure of the equipment is considered based on the disaster information, so that the internal power supply can be safely Switching to operation can be performed.

According to such a configuration, even when an abnormality of the external power supply is detected based on the voltage information, it is possible to safely operate independently by using the internal power supply by considering the possibility of equipment failure based on the disaster information. Can be switched.

The purpose, features, aspects, and advantages of the technology disclosed in the present specification will become more apparent from the detailed description and the accompanying drawings shown below.

It is a figure which illustrates notionally the structure for implement | achieving the electric power supply apparatus regarding embodiment. FIG. 2 is a diagram schematically illustrating a hardware configuration when the power supply apparatus illustrated in FIG. 1 is actually operated. FIG. 2 is a diagram schematically illustrating a hardware configuration when the power supply apparatus illustrated in FIG. 1 is actually operated. It is a flowchart regarding independent operation control regarding the embodiment. It is a figure which illustrates notionally the structure for implement | achieving the electric power supply apparatus regarding embodiment. It is a flowchart regarding independent operation control regarding the embodiment. It is a figure which illustrates notionally the structure for implement | achieving the electric power supply apparatus regarding embodiment. It is a figure which illustrates notionally the structure for implement | achieving the electric power supply apparatus regarding embodiment.

Hereinafter, embodiments will be described with reference to the accompanying drawings. Note that the drawings are schematically shown, and the mutual relationship between the size and position of images shown in different drawings is not necessarily described accurately, and can be changed as appropriate. Moreover, in the description shown below, the same code | symbol is attached | subjected and shown in the same component, and it is the same also about those names and functions. Therefore, the detailed description about them may be omitted.

<First Embodiment>
Hereinafter, the power supply apparatus and power supply method according to the present embodiment will be described.

<Configuration>
FIG. 1 is a diagram conceptually illustrating a configuration for realizing the power supply apparatus according to the present embodiment. As illustrated in FIG. 1, the power supply device includes a storage battery 3, a power conversion device 4, an electromagnetic contactor 5 a, an electromagnetic contactor 5 b, a control unit 6, a system voltage monitoring unit 7, and a disconnection. A command unit 8 and a disaster monitoring unit 9 are provided.

In addition, the power supply device is electrically connected to the external commercial system 1. In addition, the power supply device is electrically connected to the external load 2. Here, the power supply device and the load 2 are configured to be installed in the same house, for example. Moreover, the commercial system 1 supplies electric power, for example, into a house from the outside of the power supply device.

The storage battery 3 stores electric power and supplies the stored electric power. Moreover, the storage battery 3 functions as an internal power source when the power supply device performs a self-sustaining operation. Although the storage battery 3 in this embodiment is assumed as a stationary storage battery mounted in the same housing | casing as the power converter device 4, the aspect of a storage battery is not limited to this. That is, for example, a distributed power source such as a storage battery, a fuel cell, a solar power generation device, or a wind power generation device mounted on an electric vehicle may be used.

The power conversion device 4 performs control to switch between charging of power to the storage battery 3 and supply of power from the storage battery 3. Note that the power conversion device 4 may control only the supply of power from the storage battery 3. The power conversion device 4 has a function of converting the direct current of the storage battery 3 into the alternating current of the commercial system 1.

The magnetic contactor 5a to which the commercial system 1 is connected and the electromagnetic contactor 5b to which the load 2 is connected perform path connection and path disconnection in the path connecting the commercial system 1, the load 2 and the storage battery 3. . Further, the electromagnetic contactor 5a and the electromagnetic contactor 5b are controlled by the disconnection command unit 8.

The disconnection command unit 8 performs control related to path connection and path disconnection of the magnetic contactor 5a and the magnetic contactor 5b.

System voltage monitoring unit 7 measures the voltage of commercial system 1. Then, the system voltage monitoring unit 7 outputs power failure information including the voltage value of the commercial system 1.

The disaster monitoring unit 9 measures disaster-related data. Specifically, the disaster monitoring unit 9 measures the power supply device and the seismic intensity around it using, for example, a seismometer. And the disaster monitoring part 9 outputs the disaster information containing the data regarding a disaster. As a specific example of the disaster monitoring unit 9, the inclination of a load, wiring, distribution board, power supply device, or the like can be measured by an inclinometer or an accelerometer.

The control unit 6 controls the disconnection command unit 8 and the power conversion device 4 based on the power failure information input from the system voltage monitoring unit 7 and the disaster information input from the disaster monitoring unit 9.

Specifically, the control unit 6 determines, for example, whether the voltage value of the commercial system 1 is smaller than a predetermined threshold regarding the power failure information. Moreover, the control part 6 judges whether a power supply apparatus and its surrounding seismic intensity are larger than a predetermined threshold regarding disaster information, for example. In addition, the comparison with the threshold value regarding power failure information may be performed in advance in the system voltage monitoring unit 7. Moreover, the comparison with the threshold value regarding disaster information may be performed in advance in the disaster monitoring unit 9.

The control by the control unit 6 selects the power supply path from the commercial system 1 to the load 2 or the power supply path from the storage battery 3 to the load 2.

2 and 3 are diagrams schematically illustrating a hardware configuration when the power supply apparatus illustrated in FIG. 1 is actually operated. The hardware configuration illustrated in FIGS. 2 and 3 may not be consistent with the configuration illustrated in FIG. 1 in terms of the number and the like. This is because the configuration illustrated in FIG. This is due to what is shown. Therefore, at least one configuration illustrated in FIG. 1 includes a plurality of hardware configurations illustrated in FIGS. 2 and 3, and one configuration illustrated in FIG. 1 corresponds to FIGS. 2 and 3. 1 corresponds to a part of the hardware configuration illustrated in FIG. 1, and further, a plurality of configurations illustrated in FIG. 1 may be provided in one hardware configuration illustrated in FIG. 2 and FIG. Can be envisaged.

In FIG. 2, as a hardware configuration for realizing the power supply device in FIG. 1, a processing circuit 102 a that performs calculation, a storage device 103 that can store information, a physical quantity such as a sensor or an analyzer, and the like. A measuring device 106 capable of measuring and the storage battery 3 are shown. These configurations are the same in other embodiments described later.

FIG. 3 shows a processing circuit 102b that performs a calculation, a measuring device 106, and a storage battery 3 as a hardware configuration for realizing the power supply device in FIG. These configurations are the same in other embodiments described later.

The storage device 103 includes, for example, a hard disk (Hard disk drive, ie, HDD), random access memory (random access memory, ie, RAM), read only memory (read only memory, ie, ROM), flash memory, erasable programmable read only (only ROM). EPROM) and electrically erasable programmable read-only memory (EEPROM), etc., depending on memory (storage media) including volatile or non-volatile semiconductor memory, magnetic disk, flexible disk, optical disk, compact disk, mini disk, DVD, etc. Constitution It composed of such as a memory (storage medium), and the like are.

The processing circuit 102 a may execute a program stored in the storage device 103. In other words, for example, a central processing unit (CPU), a microprocessor, a microcomputer, or a digital signal processor (DSP) may be used.

When the processing circuit 102a executes a program stored in the storage device 103, the power conversion device 4, the control unit 6, and the disconnection command unit 8 are based on software, firmware, or a combination of software and firmware. Realized. Note that the functions of the power conversion device 4, the control unit 6, and the disconnection command unit 8 may be realized by, for example, cooperation of a plurality of processing circuits.

Software and firmware may be described as programs and stored in the storage device 103. In that case, the processing circuit 102a reads out and executes the program stored in the storage device 103, thereby realizing the above function. That is, the storage device 103 may store a program that, as a result, is executed by the processing circuit 102a, realizes the above functions.

Further, the processing circuit 102b may be dedicated hardware. That is, for example, a single circuit, a compound circuit, a programmed processor, a parallel programmed processor, an integrated circuit (application specific integrated circuit, that is, ASIC), a field-programmable gate array (FPGA), or a combination thereof. It may be.

When the processing circuit 102b is dedicated hardware, the power conversion device 4, the control unit 6, and the disconnection command unit 8 are realized by the processing circuit 102b operating. Note that the functions of the power conversion device 4, the control unit 6, and the disconnection command unit 8 may be realized by separate circuits or may be realized by a single circuit.

Note that the functions of the power conversion device 4, the control unit 6, and the disconnection command unit 8 are realized in the processing circuit 102 a that partially executes a program stored in the storage device 103, and a part thereof is dedicated. It may be realized in the processing circuit 102b which is hardware of the above.

Further, the system voltage monitoring unit 7 and the disaster monitoring unit 9 are realized by the measuring device 106.

<Action>
Next, the operation of the power supply apparatus according to this embodiment will be described with reference to FIG. FIG. 4 is a flowchart regarding the self-sustained operation control of the present embodiment.

The control unit 6 refers to the power failure information input from the system voltage monitoring unit 7, and determines whether or not the voltage value of the commercial system 1 is smaller than a predetermined threshold value (see step ST401). If the voltage value of commercial system 1 is smaller than a predetermined threshold value (corresponding to YES), it is determined that commercial system 1 is out of power, and the process proceeds to step ST402. If the voltage value of commercial system 1 is greater than or equal to a predetermined threshold value (corresponding to NO), it is determined that commercial system 1 has not failed, and the process proceeds to step ST404.

Next, the control unit 6 refers to the disaster information input from the disaster monitoring unit 9, and determines, for example, whether or not the power supply device and the seismic intensity around it are larger than a predetermined threshold value ( (See step ST402). If the power supply device and the surrounding seismic intensity are larger than a predetermined threshold (corresponding to YES), there is a problem with the load, wiring, distribution board, or power supply device in the house. It is determined that there is a high possibility that the error has occurred, and the process proceeds to step ST404. Also, if the power supply device and the surrounding seismic intensity are below a predetermined threshold (corresponding to NO), there is a problem with the load, wiring, distribution board, or power supply device in the house. It is determined that there is a low possibility of occurrence, and the process proceeds to step ST403.

In step ST403, the control unit 6 starts the autonomous operation of the power supply device. Specifically, the control unit 6 selects a power supply path from the storage battery 3 to the load 2. That is, the disconnection command unit 8 is controlled to block at least one of the electromagnetic contactor 5a and the electromagnetic contactor 5b.

In step ST404, the control unit 6 does not start the autonomous operation of the power supply device. Specifically, the control unit 6 keeps the power supply path from the commercial system 1 to the load 2 selected. That is, the disconnection command unit 8 is controlled to keep the electromagnetic contactor 5a and the electromagnetic contactor 5b connected.

The self-sustained operation control in the control unit 6 may be a control that is started when there is a “request to perform self-sustained operation” from the outside.

Also, the order in which steps ST401 and ST402 are performed may be reversed.

Second Embodiment
A power supply device and a power supply method according to the present embodiment will be described. In the following, the same components as those described in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted as appropriate.

<Configuration>
FIG. 5 is a diagram conceptually illustrating a configuration for realizing the power supply apparatus according to the present embodiment. As illustrated in FIG. 5, the power supply device includes a storage battery 3, a power conversion device 4, an electromagnetic contactor 5 a, an electromagnetic contactor 5 b, a control unit 6 a, a system voltage monitoring unit 7, and a disconnection. A command unit 8, a disaster monitoring unit 9, and an illuminance monitoring unit 10 are provided.

The illuminance monitoring unit 10 measures the illuminance of the power supply device and its surroundings with an illuminometer.

Based on the power failure information input from the system voltage monitoring unit 7, the disaster information input from the disaster monitoring unit 9, and the illuminance information input from the illuminance monitoring unit 10, the control unit 6 a And the power converter device 4 is controlled.

Specifically, the control unit 6a determines, for example, whether the voltage value of the commercial system 1 is smaller than a predetermined threshold regarding the power failure information. Further, the control unit 6a determines, for example, whether or not the power supply device and the surrounding seismic intensity are greater than a predetermined threshold regarding the disaster information. In addition, the control unit 6a determines whether or not the power supply device and the illuminance around it are larger than a predetermined threshold value. In addition, the comparison with the threshold value regarding power failure information may be performed in advance in the system voltage monitoring unit 7. Moreover, the comparison with the threshold value regarding disaster information may be performed in advance in the disaster monitoring unit 9. The comparison with the threshold value related to the illuminance information may be performed in advance in the illuminance monitoring unit 10.

By the control by the control unit 6a, a power supply path from the commercial system 1 to the load 2 or a power supply path from the storage battery 3 to the load 2 is selected.

<Action>
Next, the operation of the power supply apparatus according to this embodiment will be described with reference to FIG. FIG. 6 is a flowchart regarding the self-sustained operation control of the present embodiment.

The control unit 6 refers to the power failure information input from the system voltage monitoring unit 7, and determines whether or not the voltage value of the commercial system 1 is smaller than the threshold value (see step ST501). If the voltage value of commercial system 1 is smaller than the threshold value (corresponding to YES), it is determined that commercial system 1 has a power failure, and the process proceeds to step ST502. If the voltage value of commercial system 1 is equal to or greater than the threshold value (corresponding to NO), it is determined that commercial system 1 has not failed, and the process proceeds to step ST505.

Next, the control unit 6 refers to the disaster information input from the disaster monitoring unit 9, and determines, for example, whether or not the power supply device and the surrounding seismic intensity are larger than a threshold value (see step ST502). ). If the power supply device and the surrounding seismic intensity are larger than the threshold (corresponding to YES), there may be a problem with the load, wiring, distribution board, or power supply device in the house. The process is determined to be high, and the process proceeds to step ST505. Also, if the power supply device and the surrounding seismic intensity are below the threshold (corresponding to NO), there may be a problem with the load, wiring, distribution board, or power supply device in the house It judges that the nature is low, and proceeds to step ST503.

Next, the control unit 6 refers to the illuminance information input from the illuminance monitoring unit 10 and determines, for example, whether or not the illuminance around the power supply device and its surroundings is greater than a predetermined threshold value ( (See step ST503). If the illuminance around the power supply device and its surroundings is greater than a predetermined threshold (corresponding to YES), it is determined that the surrounding brightness is sufficient, and the process proceeds to step ST506. On the other hand, if the illuminance around the power supply device and its surroundings is equal to or less than a predetermined threshold (corresponding to NO), it is determined that the surrounding brightness is not sufficient, and the process proceeds to step ST504.

In step ST504, the control unit 6 starts the autonomous operation of the power supply device. Specifically, the control unit 6 selects a power supply path from the storage battery 3 to the load 2.

In step ST505, the control unit 6 does not start the autonomous operation of the power supply device. Specifically, the control unit 6 keeps the power supply path from the commercial system 1 to the load 2 selected.

In step ST506, the control unit 6 suspends the determination as to whether or not to start the self-sustained operation of the power supply apparatus, and leaves the determination to the user. Therefore, in this case, the automatic independent operation is not started.

Further, the order in which steps ST501 and ST502 are performed may be reversed.

According to the above autonomous operation control, by further considering the illuminance information, if the illuminance around the power supply device and its surroundings is larger than a predetermined threshold, the ambient brightness is sufficient, It can be determined that it is not necessary to urgently supply power mainly for use as lighting. Therefore, the safety check can be made redundant without depending on the user's judgment without automatically starting the autonomous operation.

<Third Embodiment>
A power supply device and a power supply method according to the present embodiment will be described. In the following, the same components as those described in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted as appropriate.

<Configuration>
FIG. 7 is a diagram conceptually illustrating a configuration for realizing the power supply apparatus according to the present embodiment. As illustrated in FIG. 7, the power supply device includes the storage battery 3, the power conversion device 4, the electromagnetic contactor 5 a, the electromagnetic contactor 5 b, the control unit 6, the system voltage monitoring unit 7, and the disconnection. A command unit 8 and a disaster monitoring unit 9a are provided.

The disaster monitoring unit 9 a acquires data relating to the disaster from the external disaster monitoring system 12 through the communication network 11. In the disaster monitoring system 12, for example, a seismometer measures the power supply device and the seismic intensity around it. And the disaster monitoring part 9a outputs the disaster information containing the data regarding the acquired disaster.

The control unit 6 controls the disconnection command unit 8 and the power conversion device 4 based on the power failure information input from the system voltage monitoring unit 7 and the disaster information input from the disaster monitoring unit 9a.

Specifically, the control unit 6 determines, for example, whether the voltage value of the commercial system 1 is smaller than a predetermined threshold regarding the power failure information. Moreover, the control part 6 judges whether a power supply apparatus and its surrounding seismic intensity are larger than a predetermined threshold regarding disaster information, for example. In addition, the comparison with the threshold value regarding power failure information may be performed in advance in the system voltage monitoring unit 7. Moreover, the comparison with the threshold value regarding disaster information may be performed in advance in the disaster monitoring unit 9a.

<Fourth embodiment>
A power supply device and a power supply method according to the present embodiment will be described. In the following, the same components as those described in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted as appropriate.

<Configuration>
FIG. 8 is a diagram conceptually illustrating a configuration for realizing the power supply apparatus according to the present embodiment. As illustrated in FIG. 8, the power supply device includes the storage battery 3, the power conversion device 4, the electromagnetic contactor 5 a, the electromagnetic contactor 5 b, the control unit 6 b, the system voltage monitoring unit 7, and the disconnection. A command unit 8 and a disaster monitoring unit 9 are provided.

The control unit 6b is a power failure information input from the system voltage monitoring unit 7, a disaster information input from the disaster monitoring unit 9, and a request for independent operation from the external host controller 13 through the communication network 14, that is, Based on a request for selecting a power supply path from the storage battery 3 to the load 2, the disconnection command unit 8 and the power conversion device 4 are controlled.

Specifically, the control unit 6b determines, for example, whether the voltage value of the commercial system 1 is smaller than a threshold value regarding the power failure information. Moreover, the control part 6b judges whether a power supply apparatus and its surrounding seismic intensity are larger than a threshold value regarding disaster information, for example. In addition, the comparison with the threshold value regarding power failure information may be performed in advance in the system voltage monitoring unit 7. Moreover, the comparison with the threshold value regarding disaster information may be performed in advance in the disaster monitoring unit 9.

When the voltage value of the commercial system 1 is smaller than the threshold value, the seismic intensity around the power supply device and its surroundings is smaller than the threshold value, and the selection request is input, the control unit 6b Start autonomous operation.

By the control by the control unit 6b, a power supply path from the commercial system 1 to the load 2 or a power supply path from the storage battery 3 to the load 2 is selected.

According to the above-mentioned self-sustained operation control, safety can be improved even in a system based on a remote operation in which safety confirmation cannot be performed directly by further considering a selection request from the external host controller 13.

<Effect>
Below, the effect by said embodiment is illustrated. In the following, effects based on the specific configuration exemplified in the above-described embodiment will be described. However, other similar configurations exemplified in the present specification may be substituted within a range where the similar effect is generated. May be. In addition, the replacement may be performed across a plurality of embodiments. In other words, the configurations exemplified in different embodiments may be combined to produce the same effect.

According to the above-described embodiment, the power supply device includes the storage battery 3 corresponding to the internal power source that stores power, the control unit 6, the disaster monitoring unit 9, and the system voltage monitoring unit 7 corresponding to the voltage monitoring unit. Prepare. The control unit 6 controls the power supply path to the load 2. The disaster monitoring unit 9 outputs disaster information that is information related to the occurrence of a disaster. The system voltage monitoring unit 7 outputs voltage information that is information regarding the voltage of the commercial system 1 corresponding to the external power supply. Further, the control unit 6 selects one of a power supply path from the commercial system 1 to the load 2 and a power supply path from the storage battery 3 to the load 2 based on the disaster information and the voltage information.

In addition, according to the above embodiment, the power supply device includes the storage battery 3, the disaster monitoring unit 9, and the system voltage monitoring unit 7. In addition, the power supply device includes a processing circuit 102a that executes a program and a storage device 103 that stores the program. Then, when the processing circuit 102a executes the program, the following operation is realized. That is, based on the disaster information and the voltage information, one of the power supply path from the commercial system 1 to the load 2 and the power supply path from the storage battery 3 to the load 2 is selected.

In addition, according to the above embodiment, the power supply device includes the storage battery 3, the disaster monitoring unit 9, and the system voltage monitoring unit 7. Further, the power supply apparatus includes a processing circuit 102b. Then, the processing circuit 102b performs the following operation. That is, the processing circuit 102b selects one of the power supply path from the commercial system 1 to the load 2 and the power supply path from the storage battery 3 to the load 2 based on the disaster information and the voltage information.

According to such a configuration, even when an abnormality of the external power supply is detected based on the voltage information, the possibility of a failure of the equipment is considered based on the disaster information, so that the internal power supply can be safely Switching to operation can be performed. The disaster monitoring unit 9 is assumed to measure the power supply device and the surrounding seismic intensity with a seismometer, for example. The disaster monitoring unit 9a acquires disaster information from an external disaster monitoring system through a communication network. It may be.

In addition, other configurations exemplified in the present specification other than these configurations can be omitted as appropriate. That is, the above effect can be produced only with these configurations. However, when at least one of the other configurations exemplified in this specification is appropriately added to the above configuration, that is, other configurations exemplified in this specification that are not described as the above configuration Even when added to the above configuration, the above-described effects can be similarly produced.

Moreover, according to said embodiment, the control part 6 is the voltage information smaller than the predetermined value, and when disaster information shows that the disaster has not generate | occur | produced, from the storage battery 3 to the load 2, Select the power supply path. According to such a configuration, even when a power failure is detected based on the voltage information, only when it is detected that no disaster has occurred based on the disaster information, switching to the independent operation by the internal power source is performed. I do. Therefore, it is possible to safely switch to the independent operation by the internal power source.

Further, according to the above-described embodiment, the control unit 6 determines the power supply path from the commercial grid 1 to the load 2 when the voltage information is greater than a predetermined value or the disaster information indicates the occurrence of a disaster. Select. According to such a configuration, even when a power failure is not detected based on the voltage information, or even when an occurrence of a disaster is detected based on the disaster information, switching to the independent operation by the internal power source is not possible. Not performed. Therefore, it is possible to safely switch to the independent operation by the internal power source.

Moreover, according to said embodiment, an electric power supply apparatus is provided with the illumination intensity monitoring part 10 corresponding to the illumination intensity measurement part which outputs the illumination intensity information which is the information regarding ambient brightness. And the control part 6a selects either the electric power supply path | route from the external power supply to the load 2, and the electric power supply path | route from the storage battery 3 to the load 2 based on disaster information, voltage information, and illumination intensity information. . According to such a configuration, even when an abnormality of the external power supply is detected based on the voltage information, the possibility of equipment failure is considered based on the disaster information, and the ambient illuminance is calculated based on the illuminance information. By considering this, it is possible to switch to a self-sustained operation using an internal power source in the case of high urgency.

In addition, according to the above embodiment, the control unit 6a indicates that the voltage information is smaller than a predetermined value, the disaster information indicates that no disaster has occurred, and the illuminance information is greater than a predetermined value. Is smaller, the power supply path from the storage battery 3 to the load 2 is selected. According to such a configuration, even when a power failure is detected based on the voltage information, it is detected that no disaster has occurred based on the disaster information, and further, based on the illuminance information, the power supply device and its surroundings are detected. Only when the illuminance is smaller than a predetermined threshold, switching to the independent operation by the internal power source is performed. Therefore, switching to the independent operation by the internal power source can be performed only when the urgency is high.

Moreover, according to said embodiment, the control part 6b is selection regarding selection of the electric power supply path | route from the storage battery 3 output from the high-order controller 13 corresponding to disaster information, voltage information, and an external controller to the load 2. Based on the request, one of a power supply path from the external power source to the load 2 and a power supply path from the storage battery 3 to the load 2 is selected. According to such a configuration, even when an abnormality of the external power supply is detected based on the voltage information, the possibility of a facility failure or the like is considered based on the disaster information, and further from the host controller 13 based on the selection request. By considering this requirement, it is possible to switch to a self-sustained operation using an internal power supply when requested.

In addition, according to the above embodiment, the control unit 6b indicates that the voltage information is smaller than a predetermined value, the disaster information indicates that no disaster has occurred, and a selection request is input. A power supply path from the storage battery 3 to the load 2 is selected. According to such a configuration, even when a power failure is detected based on the voltage information, it is detected that no disaster has occurred based on the disaster information, and further, independent operation from the host controller 13 based on the selection request. Only when a request for starting is made, switch to independent operation with the internal power supply. Therefore, switching to the independent operation by the internal power source can be performed only when requested.

Moreover, according to said embodiment, in the electric power supply method, the disaster information which is the information regarding the presence or absence of the occurrence of a disaster output from the disaster monitoring unit 9 and the voltage of the commercial system 1 output from the system voltage monitoring unit 7 Based on the voltage information that is information on the power supply, one of a power supply path from the commercial system 1 to the load 2 and a power supply path from the storage battery 3 to the load 2 is selected. According to such a configuration, even when an abnormality of the external power supply is detected based on the voltage information, it is possible to safely operate independently by using the internal power supply by considering the possibility of equipment failure based on the disaster information. Can be switched.

In addition, other configurations exemplified in the present specification other than these configurations can be omitted as appropriate. That is, the above effect can be produced only with these configurations. However, when at least one of the other configurations exemplified in this specification is appropriately added to the above configuration, that is, other configurations exemplified in this specification that are not described as the above configuration Even when added to the above configuration, the above-described effects can be similarly produced. Moreover, unless there is a restriction | limiting in particular, the order of implementation of each process can be changed.

<Modification>
In the above-described embodiment, the dimensions, shapes, relative arrangement relations, or implementation conditions of each component may be described. However, these are examples in all aspects and are described in this specification. It is not limited to. Accordingly, innumerable modifications not illustrated are envisaged within the scope of the technology disclosed in this specification. For example, the case where at least one component is modified, added or omitted, and further, the case where at least one component in at least one embodiment is extracted and combined with the components of other embodiments are included. It is.

In addition, as long as no contradiction arises, “one or more” components described as being provided with “one” in the above embodiment may be provided. Furthermore, each component is a conceptual unit, and one component consists of a plurality of structures, one component corresponds to a part of the structure, and a plurality of components. And the case where the component is provided in one structure. Each component includes a structure having another structure or shape as long as the same function is exhibited.

In addition, the description in the present specification is referred to for all purposes related to the present technology, and none of them is admitted to be prior art.

In addition, each component described in the above embodiment is assumed to be software or firmware, or hardware corresponding thereto, and in both concepts, each component is a “unit” or “processing circuit” or the like. Called.

The technique disclosed in the present specification may be a case where each component is distributed and provided in a plurality of devices (that is, an aspect like a system).

As described above, the power supply apparatus and the power supply method related to the technology disclosed in the present specification are useful for a power supply system having a self-sustained operation, and are particularly suitable for a system that supplies electricity to a load in a house. .

1 commercial system, 2 load, 3 storage battery, 4 power converter, 5a, 5b electromagnetic contactor, 6, 6a, 6b control unit, 7 system voltage monitoring unit, 8 disconnection command unit, 9, 9a disaster monitoring unit, 10 Illuminance monitoring unit, 11, 14 communication network, 12 disaster monitoring system, 13 host controller, 102a, 102b processing circuit, 103 storage device, 106 measuring device.

Claims

A power supply device for supplying power to the load (2);
An internal power supply (3) for storing electric power;
A control unit (6, 6a, 6b) for controlling a power supply path to the load (2);
A disaster monitoring unit (9, 9a) that outputs disaster information that is information on whether or not a disaster has occurred;
A voltage monitoring unit (7) that outputs voltage information that is information relating to the voltage of the external power source (1) that is a commercial power system connected to the power supply device;
Based on the disaster information and the voltage information, the control unit (6, 6a, 6b) is configured to supply a power supply path from the external power source (1) to the load (2), and from the internal power source (3). Select one of the power supply paths to the load (2),
Power supply device.
When the voltage information is smaller than a predetermined value and the disaster information indicates that no disaster has occurred, the control unit (6, 6a, 6b) Select the power supply path to load (2),
The power supply apparatus according to claim 1.
The control unit (6, 6a, 6b) receives the load (2) from the external power source (1) when the voltage information is greater than a predetermined value or the disaster information indicates the occurrence of a disaster. Select the power supply route to
The power supply apparatus according to claim 1.
An illuminance measurement unit (10) that outputs illuminance information that is information related to ambient brightness is further provided,
Based on the disaster information, the voltage information, and the illuminance information, the control unit (6a) includes a power supply path from the external power source to the load (2), and the internal power source (3) to the load (2). ) To select one of the power supply routes to
The power supply apparatus according to claim 1.
When the voltage information is smaller than a predetermined value, the disaster information indicates that no disaster has occurred, and the illuminance information is smaller than a predetermined value. Selecting a power supply path from the internal power source (3) to the load (2);
The power supply apparatus according to claim 4.
The control unit (6b) requests selection regarding the disaster information, the voltage information, and the selection of a power supply path from the internal power source (3) output from the external controller (13) to the load (2). Based on the above, a power supply path from the external power supply to the load (2) and a power supply path from the internal power supply (3) to the load (2) are selected.
The power supply apparatus according to claim 1.
When the voltage information is smaller than a predetermined value, the disaster information indicates that no disaster has occurred, and the selection request is input, the control unit (6b) Selecting a power supply path from 3) to the load (2);
The power supply apparatus according to claim 6.
A power supply method for switching between an internal power supply (3) for storing power and an external power supply (1) that is a commercial power system and supplying power to a load (2),
Disaster information that is information on the presence or absence of a disaster that is output from the disaster monitoring unit (9, 9a), and voltage information that is information about the voltage of the external power source (1) that is output from the voltage monitoring unit (7) Based on the power supply path from the external power supply (1) to the load (2) and the power supply path from the internal power supply (3) to the load (2),
Power supply method.
When the voltage information is smaller than a predetermined value and the disaster information indicates that no disaster has occurred, a power supply path from the internal power supply (3) to the load (2) is selected. ,
The power supply method according to claim 8.
When the voltage information is greater than a predetermined value or the disaster information indicates the occurrence of a disaster, a power supply path from the external power source (1) to the load (2) is selected.
The power supply method according to claim 8.
Based on the disaster information, the voltage information, and illuminance information that is information on ambient brightness, a power supply path from the external power source to the load (2), and from the internal power source (3) to the load ( 2) Select one of the power supply paths to
The power supply method according to claim 8.
When the voltage information is smaller than a predetermined value, the disaster information indicates that no disaster has occurred, and the illuminance information is smaller than a predetermined value, the internal power supply (3) Selecting a power supply path to the load (2);
The power supply method according to claim 11.
Based on the disaster information, the voltage information, and a selection request regarding selection of a power supply path from the internal power supply (3) to the load (2) output from the external controller (13), the external power supply Selecting one of a power supply path to the load (2) and a power supply path from the internal power supply (3) to the load (2);
The power supply method according to claim 8.
When the voltage information is smaller than a predetermined value, the disaster information indicates that no disaster has occurred, and the selection request is input, the internal power supply (3) to the load (2) Select the power supply route to
The power supply method according to claim 13.