High voltage power receiving equipment

Abstract

In the event of a power outage, a cubicle-type high-voltage power receiving equipment (10) converts power stored in an electricity storage device (5) connected to an electricity storage device connection part (51) into AC power by an AC / DC inverter (62), and outputs the AC power to an intermediate AC power line (24). Then, for each of main lines of M low-voltage AC power lines (28) branched off from the intermediate AC power line (24), the cubicle-type high-voltage power receiving equipment (10) converts the AC power of the intermediate AC power line (24) into low-voltage AC power for each of the main lines by secondary AC / AC inverters (26), respectively, and outputs the low-voltage AC power. At this time, the cubicle-type high-voltage power receiving equipment (10) controls the conversion operation of each of the secondary AC / AC inverters (26) on the basis of a preset priority setting and the amount of power stored in the electricity storage device (5), and limits power output to each main line in accordance with the status during the power outage and the amount of power stored in the electricity storage device (5), so as to keep supplying power to a preset priority main line as long as possible.

Description

[Technical field]

[0001] The present invention relates to high voltage power receiving equipment. [Background technology]

[0002] There is known high-voltage power receiving equipment in which various electrical devices for power conversion, which receive high-voltage AC power from a power transmission system, convert it into low-voltage AC power, and output it, are housed in a housing case called a cubicle (see, for example, Patent Document 1). In Japan, this type of high-voltage power receiving equipment is called a cubicle-type high-voltage power receiving equipment, but in other countries, similar equipment is called, for example, a pad-mounted transformer in English. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-103623 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the high-voltage power receiving equipment having the above-mentioned housing is equipment that is premised on a permanent supply of high-voltage AC power from the power transmission system, and therefore cannot output power when the reception of high-voltage AC power is cut off due to a power outage in the power transmission system.

[0005] The problem that the present invention aims to solve is to provide a technology for high-voltage power receiving equipment equipped with a housing that enables power output even during a power outage. [Means for solving the problem]

[0006] A first invention includes a housing, an electric power conversion electric device installed within the housing for converting a predetermined high voltage AC power of 3,000V or more and 15,000V or less that is received and outputting AC power of less than 1,000V to M (M≧2) main lines via a power line, an electric storage device connection unit placed outside the housing and connected to a replaceable electric storage device, and a controller for controlling switching from a high voltage power receiving mode using the predetermined high voltage AC power as a power source to a battery mode using stored power of an electric storage device connected to the electric storage device connection unit as a power source, wherein the electric device is The high-voltage receiving equipment includes an integrated storage power conversion unit that uses the stored power of a storage device connected to the storage device connection unit as a power source, converts it into AC power and outputs it to the power line, and M inverters corresponding to each of the M trunk lines that convert the AC power flowing through the power line into low-voltage AC power for the trunk line, wherein the controller controls the operation of the integrated storage power conversion unit and, in the battery mode, controls the conversion operation of the M inverters based on priority settings preset for the M trunk lines and the amount of stored power of the storage device.

[0007] The high-voltage power receiving equipment of the first invention includes a power storage device connection unit that is individually connected to a replaceable power storage device. During a power outage, the equipment switches to a battery mode in which the power source is the stored power of the power storage device connected to the power storage device connection unit, and the stored power output from the power storage device connected to the power storage device connection unit is converted to a predetermined AC power, which is then converted to low-voltage AC power by inverters for M trunk lines and output. At this time, the conversion operation of the inverters for each trunk line is controlled based on a priority setting preset for the M trunk lines and the amount of stored power in the power storage device.

[0008] Therefore, the high-voltage power receiving equipment of the first invention can output continuous power even during a power outage by appropriately replacing the power storage device. In addition, the conversion operation of the inverter for each main line can be controlled based on the amount of stored power in the power storage device and the priority setting of each main line, so that various adjustments related to output power can be made according to the amount of stored power in the power storage device and the priority of each main line. Continuous power output that flexibly responds to the situation during a power outage (for example, the power demand situation of each main line and the storage status of the power storage device) is possible.

[0009] A second aspect of the present invention is the high voltage power receiving equipment, wherein the priority setting includes at least an emergency setting for limiting output.

[0010] An "emergency" refers to a "power outage" in which power is cut off from the high-voltage AC power line. According to the second aspect of the present invention, by limiting the power output, the remaining stored power can be preferentially allocated according to the priority of the trunk line. For example, if a situation occurs in which the replacement of the power storage device is delayed, it becomes possible to perform control such as limiting the power output to the trunk line with a low priority and maintaining the power output to the trunk line with a high priority.

[0011] A third aspect of the present invention is the high voltage receiving equipment, wherein the emergency settings include a priority main line, an upper limit ampere capacity, and a reserved time.

[0012] According to the third aspect of the present invention, it is possible to realize settings that ensure power output to the priority trunk. For example, if the upper limit ampere capacity and the reserved time are set for non-priority trunks other than the priority trunks, the upper limit ampere capacity and reserved time of the power output to the non-priority trunks can be limited, so that the limited amount of power output can be directed to the priority trunks. Also, for example, by setting the upper limit ampere capacity and reserved time for the priority trunks, it becomes possible to perform control to limit the power output of the priority trunks so that the power output for the reserved time at the upper limit ampere capacity can be covered.

[0013] A fourth aspect of the present invention is the high voltage power receiving equipment, wherein the emergency setting includes a setting for limiting output in a plurality of stages.

[0014] According to the fourth aspect of the present invention, by setting the emergency condition in multiple stages, it is possible to realize an appropriate output restriction according to the emergency condition.

[0015] A fifth invention is a high-voltage power receiving equipment, wherein in the above-mentioned high-voltage power receiving equipment, the storage device connection unit has N (N≧2) connection units individually connected to the replaceable storage devices, the electrical equipment further includes an intermediate DC power conversion unit that converts the stored power output from each of the storage devices connected to the N connection units into a predetermined intermediate DC power, the integrated storage power conversion unit converts the predetermined intermediate DC power converted by the intermediate DC power conversion unit into AC power and outputs it to the power line, and the controller controls the operation of the intermediate DC power conversion unit and the integrated storage power conversion unit.

[0016] According to the fifth aspect of the present invention, it is possible to respond quickly to changes in power supply and demand, and to facilitate and streamline power conversion control, compared to a configuration in which received high voltage is directly converted into output low voltage.

[0017] A sixth invention is a high-voltage receiving equipment in which, in the battery mode, the controller controls the intermediate DC power conversion unit using the priority setting to variably select, from among the storage devices connected to the N connection parts, a storage device that will consume stored power on a priority basis.

[0018] According to the sixth aspect of the present invention, the consumption distribution of the power storage devices can be changed by variably selecting the power storage device that will consume the stored power preferentially. For example, it is possible to prevent the concentration of battery exhaustion, which occurs when all the connected power storage devices run out of battery at the same time. Since it is possible to ensure time to replace the power storage devices one by one while continuing to output power from the high-voltage power receiving equipment, it is possible to realize a stable and continuous power supply operation in battery mode.

[0019] A seventh invention is the high-voltage receiving equipment described above, further comprising an alarm device, wherein the controller controls the alarm device to notify of the replacement timing for a storage device that preferentially consumes stored power.

[0020] According to the seventh aspect of the present invention, the timing for replacing the electricity storage device is notified, and assistance can be provided for planning the replacement work of the electricity storage device. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a conceptual diagram showing an example of a system configuration related to a cubicle-type high-voltage power receiving facility. [Diagram 2] FIG. 1 is a diagram showing a schematic configuration example of a cubicle-type high-voltage power receiving facility. [Diagram 3] FIG. 2 is a diagram showing examples of programs and data stored in a storage device. [Figure 4] FIG. 4 is a diagram showing an example of the data structure of reference data. [Diagram 5] FIG. 4 is a diagram showing an example of a data structure of various quantity data. [Figure 6] FIG. 4 is a diagram showing an example of the data configuration of priority setting data. [Figure 7] 4 is a flowchart for explaining the flow of operation of the cubicle-type high-voltage power receiving equipment. [Figure 8] 6 is a flowchart illustrating the flow of a battery mode process. [Figure 9] Flowchart continued from Figure 8. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] An example of an embodiment to which the present invention is applied will be described below, but it goes without saying that the forms to which the present invention can be applied are not limited to the following embodiment. In addition, the high-voltage power receiving equipment equipped with a housing will be described as a "cubicle-type high-voltage power receiving equipment," which is the name used in Japan. "Cubicle-type high-voltage power receiving equipment" can be rephrased as "pad-mounted transformer," which is one of the English names.

[0023] FIG. 1 is a conceptual diagram showing an example of a system configuration related to a cubicle-type high-voltage power receiving facility 10. As shown in FIG. The cubicle-type high-voltage power receiving equipment 10 is a closed-type small-scale substation equipment for small and medium-sized facilities such as detached houses, apartment buildings, commercial facilities, buildings, factories, stations, schools, and hospitals. For example, the English name is a pad-mounted transformer. The cubicle-type high-voltage power receiving equipment 10 is an equipment in which an electric device for power conversion is installed in a metal housing case for receiving a predetermined high-voltage AC power (6.6 kV in the example of FIG. 1) of 3,000 V or more and 15,000 V or less, converting it into AC power with a lower voltage than the received high-voltage AC power, and outputting a predetermined low-voltage AC power of less than 1,000 V (100 V in the example of FIG. 1) via a power line. The predetermined high-voltage AC power may be 6.6 kV, 3 kV, 10 kV, etc. The predetermined low-voltage AC power may be 100 V, 200 V, 400 V, etc.

[0024] The high voltage AC power received by the cubicle type high voltage power receiving equipment 10 is generally supplied from a power transmission system such as a power transmission network. In preparation for a power outage in the power transmission system causing the reception of high voltage AC power to be cut off, the cubicle type high voltage power receiving equipment 10 is configured to be externally connectable to a plurality of replaceable (N units: N is 2 or more) power storage devices 5 (5a, 5b, ...) as emergency power sources. The power storage devices 5 are installed outside the housing of the cubicle type high voltage power receiving equipment 10 and are individually electrically connected. Depending on the size of the cubicle type high voltage power receiving equipment 10, a configuration may be adopted in which some or all of the power storage devices 5 are accommodated within the housing.

[0025] The power storage device 5 is a chargeable and dischargeable secondary battery, and may be, for example, a lead storage battery, a lithium ion storage battery, a lithium polymer battery, an all-solid-state battery, a nickel-hydrogen battery, a nickel-cadmium battery, a sodium-sulfur battery (NAS battery), a redox flow battery, etc. Of course, other types of secondary batteries may also be used.

[0026] In addition to the above-mentioned battery types based on physical principles, the same battery type also exists with different specifications (different types) according to the intended use, such as a large current short-time output type / small current long-time output type, or large capacity / small capacity.

[0027] 2 is a diagram showing a schematic configuration example relating to power conversion in the cubicle-type high-voltage power receiving equipment 10. The cubicle-type high-voltage power receiving equipment 10 includes many devices such as switchgears, fuses, and high-voltage phase-advancing capacitors, as in the conventional cubicle-type high-voltage power receiving equipment, but in this specification and drawings, illustrations and descriptions of the device configuration similar to the conventional one are omitted in order to facilitate understanding of this embodiment.

[0028] The cubicle-type high-voltage power receiving equipment 10 has an electric power conversion device 14 built in an iron housing case 12. The cubicle-type high-voltage power receiving equipment 10 is equipped with a controller 90. The controller 90 is an electronic device that controls the electric power conversion device 14 so as to switch the operation mode from a "high-voltage power receiving mode" using the high-voltage AC power as the power source to a "battery mode" using the stored power of each externally connected power storage device 5 as the power source when the reception of high-voltage AC power is stopped.

[0029] The power conversion electrical equipment 14 includes, for example, a switchgear 18, a primary voltmeter 20, a primary AC / AC inverter 22, secondary AC / AC inverters 26 (26a, 26b, . . . ), a secondary voltmeter 30, and a secondary ammeter 32.

[0030] The switchgear 18 is a device that switches the receiving path of high voltage AC power from the power transmission system, and is configured using a disconnector and a circuit breaker.

[0031] The primary voltmeter 20 measures the voltage of the received high voltage AC power and outputs the measurement value to the controller 90. The measurement value is used by the controller 90 to detect a power outage of the received high voltage AC power.

[0032] The primary AC / AC inverter 22 steps down the high voltage AC power and outputs it to the intermediate AC power line 24 .

[0033] The intermediate AC power line 24 branches into M lines (M is 2 or more). The branched lines are respectively connected to M secondary AC / AC inverters 26 (26a, 26b, ...) and provide power to M low-voltage AC power lines 28 (28a, 28b, ...). Each low-voltage AC power line 28 is provided with a secondary voltmeter 30 and a secondary ammeter 32.

[0034] The secondary AC / AC inverter 26 steps down the AC power flowing through the intermediate AC power line 24 to a predetermined low-voltage AC power and outputs it on the low-voltage AC power line 28. The voltage transformation operation of the secondary AC / AC inverter 26 is controlled by a controller 90. The operation control of the secondary AC / AC inverter 26 by the controller 90 also performs ON / OFF control as to whether or not to output power to the low-voltage AC power line 28.

[0035] The secondary voltmeter 30 and the secondary ammeter 32 measure the voltage and current of the corresponding low-voltage AC power line 28, and output the measurement values ​​to the controller 90. These measurement values ​​are used to obtain data on power demand by main line at the power supply destination (hereinafter simply referred to as the "power supply destination") of the cubicle-type high-voltage power receiving equipment 10 described later.

[0036] The cubicle-type high-voltage power receiving equipment 10 also has N (N is 2 or more) individual device groups 50 (50a, 50b, ...). The N individual device groups 50 are connected in parallel to an intermediate DC line 60, and the intermediate DC line 60 is connected to the intermediate AC power line 24 via an AC / DC inverter 62.

[0037] One individual device group 50 includes a power storage device connection unit 51 for individually electrically connecting the power storage devices 5, a power storage device voltmeter 53 for measuring the output voltage of the power storage device 5, a communication device 55 for communicating with a BMS (Battery Management System) 6 of the power storage device 5, a diagnostic device 57, a thermometer 58 that is detachably attached to the surface of the power storage device 5 for measuring the temperature of the power storage device 5, and a DC / DC converter 59. The thermometer 58 may be provided in the power storage device 5.

[0038] The power storage device connection portion 51 is constituted by a socket, a cable, and the like that comply with the standards of the power storage device 5. One power storage device 5 is connected to one power storage device connection portion 51.

[0039] The power storage device voltmeter 53 measures the output voltage of the power storage device 5 and outputs the measurement value to the controller 90.

[0040] The communicator 55 is a first quantity acquisition unit that acquires various quantities related to the power storage device 5 connected to the power storage device connection unit 51. The communicator 55 acquires various information including the quantities of the power storage device 5 (e.g., storage capacity, hourly capacity, number of charges, SoC (State of Charge: remaining capacity), SoH (State of Health: health), discharge characteristic data, etc.) and manufacturing information (e.g., manufacturer name, model) through wired or wireless communication with the BMS 6, and outputs the information to the controller 90. When connecting to the BMS 6 via a wired connection, the socket and cable of the power storage device connection unit 51 may be used as a communication path, or a separate cable for communication may be prepared and connected to a communication terminal on the BMS 6 side.

[0041] The diagnostic device 57 is a second quantity acquisition unit that acquires the quantities of the power storage device 5 connected to the power storage device connection unit 51. When the communication device 55 cannot acquire the quantities of the power storage device 5, the diagnostic device 57 functions as a backup, acquiring the quantities such as the SoC, SoH, and discharge characteristics, and outputting them to the controller 90. Therefore, the communication device 55 and the diagnostic device 57 can reliably acquire the quantities of the power storage device 5.

[0042] The diagnostic device 57 includes measuring instruments (e.g., a voltmeter, an ammeter, etc.) for measuring various quantities, and an IC chip or the like (e.g., a battery diagnostic IC, etc.) that performs part or all of the arithmetic processing for estimating or diagnosing the various quantities from the measured values. Of course, part or all of the arithmetic processing may be performed by the controller 90. The diagnostic device 57 may be realized by, for example, a battery checker circuit that supports a plurality of types of batteries such as lead-acid batteries and lithium-ion batteries. The diagnostic device 57 may use publicly known techniques as appropriate for the diagnostic processing method and estimation method used to obtain the SoH (e.g., an impedance method, etc.). The diagnostic device 57 may include a high-frequency generator or the like depending on the diagnostic processing method and estimation method used.

[0043] Thermometer 58 is a thermometer attached to power storage device 5 and outputs the measured temperature value to controller 90.

[0044] The DC / DC converter 59 is configured by a DC / DC converter capable of stepping up and down in both directions, and the flow direction and power conversion operation are controlled based on a command signal from the controller 90.

[0045] In the high voltage receiving mode, the DC / DC converter 59 is controlled to change the flow direction so as to perform floating charging suitable for the power storage device 5 connected to the power storage device connection unit 51, and to convert the intermediate DC power into a charging voltage for the power storage device 5. In the battery mode, the DC / DC converter 59 is controlled to function as an intermediate DC power conversion unit that converts the stored power output from the power storage device 5 connected to the power storage device connection unit 51 into a predetermined intermediate DC power and outputs it to the intermediate DC line 60.

[0046] The AC / DC inverter 62 is a bidirectional AC / DC inverter, and the current direction and power conversion operation are controlled based on an instruction signal from the controller 90.

[0047] In the high voltage receiving mode, the AC / DC inverter 62 is controlled to function as a conversion unit that converts the AC on the intermediate AC power line 24 into DC and outputs it to the intermediate DC line 60 for floating charging of the storage device 5.

[0048] In the battery mode, the AC / DC inverter 62 is controlled to function as an integrated storage power conversion unit that converts the stored power of the storage device 5 connected to the storage device connection unit 51 into AC power using the stored power as a power source and outputs it to the intermediate AC power line 24.

[0049] The controller 90 is a type of computer that realizes various functions by executing arithmetic processing according to a predetermined program also called a control logic or a control sequence. The controller 90 is connected to a monitor 92 that is an image display means, an input device 94 realized by a keyboard, a touch panel, a barcode reader, a mouse, etc., a storage device 96 realized by an IC memory, a hard disk, etc., and a broadcasting facility 98 that generates and transmits a broadcasting signal to a facility that is a power supply destination. The controller 90 may be configured to include some or all of the monitor 92, the input device 94, and the storage device 96.

[0050] FIG. 3 is a diagram showing an example of programs and data stored in the storage device 96. As shown in FIG. The storage device 96 stores a control program 100, a current mode 102 indicating the current operation mode of the cubicle-type high-voltage power receiving equipment 10, a current date and time 106, a power outage start time 108, reference data 110, power storage device type determination criterion data 150, main line power supply stoppage notice audio data 160, various quantity data 220, main line power demand data 230, priority setting data 240, an applicable emergency setting ID 280, consumption setting data 290, and power storage device replacement history data 310. Of course, data other than these can also be stored as appropriate.

[0051] The control program 100 is read by the controller 90 and processed to realize various functions for comprehensively controlling the operation of the cubicle-type high-voltage power receiving equipment 10.

[0052] The functions realized by the program include, for example, (1) A function for detecting a power outage in the high-voltage AC power line by monitoring the voltage value of the primary voltmeter 20 and switching the operating mode from "high-voltage power receiving mode" to "battery mode"; (2) In the battery mode, a function of controlling the operation of the DC / DC converter 59 (intermediate DC power conversion unit) to convert the stored power of the power storage device 5 connected to the power storage device connection unit 51 into a predetermined intermediate DC power and outputting it to the intermediate DC line 60, and a function of controlling the operation of the AC / DC inverter 62 to convert the intermediate DC power of the intermediate DC line 60 into a predetermined AC power and outputting it to the intermediate AC power line 24; (3) In the battery mode, a function of controlling the conversion operation of M inverters (secondary AC / AC inverters 26) for each of the M trunk lines based on a priority setting previously set for the M trunk lines (low-voltage AC power lines 28) and the amount of stored power in the power storage device 5; (4) A function of variably selecting, in the battery mode, a storage device that is to consume stored power preferentially from among the N storage devices 5 connected to the storage device connection unit 51 by controlling the operation of the DC / DC converter 59 (intermediate direct current power conversion unit) using a priority setting; (5) A function of notifying the timing of replacement of the power storage device 5 that consumes stored power preferentially by using the monitor 92 as a notification device; (6) A function of controlling the DC / DC converter 59 and the AC / DC inverter 62 in a high-voltage power receiving mode so as to perform floating charging suitable for each of the power storage devices 5 connected to the power storage device connection unit 51; (7) In the high voltage receiving mode, a function of continuously monitoring and recording the voltage measured by the secondary voltmeter 30 and the current measured by the secondary ammeter 32, and calculating the power demand by time period for each trunk line of the amount of power output from the cubicle-type high voltage receiving equipment 10; Includes:

[0053] Depending on the division of functions between the controller 90 and the diagnostic device 57, the function may further include (8) a function of executing part or all of a specified diagnostic process for diagnosing various quantities of each of the storage devices 5 connected to the storage device connection unit 51.

[0054] The current date and time 106 is measured using a system clock of the controller 90. In addition, if the controller 90 has a function for connecting to the Internet, the standard time of the location where the cubicle-type high-voltage power receiving equipment 10 is installed may be obtained from a specific website, or the controller 90 may have a built-in radio clock to obtain the standard time.

[0055] The reference data 110 is a group of data prepared in advance for each type of power storage device 5 that is expected to be used, and is used to estimate and diagnose various characteristics and various quantities of the power storage device 5.

[0056] FIG. 4 is a diagram showing an example of the data structure of the reference data 110. As shown in FIG. One piece of reference data 110 includes data on specifications and ratings, such as battery standards, manufacturer name, model, storage capacity, hourly capacity, output voltage value, upper limit output current value, charging pattern data, discharge characteristic data, temperature characteristic data, and cycle characteristic data. The various data included in the reference data 110 are used to predict the duration when the power storage device 5 is used in battery mode. Note that it is not necessary to include all of the above types of data in the reference data 110.

[0057] By having the controller 90 refer to the reference data 110, it becomes easy or possible to acquire and estimate various quantities of the power storage device 5 connected to the power storage device connection unit 51. Therefore, it can be said that the controller 90 and the reference data 110 function as a third quantity acquisition unit.

[0058] Returning to FIG. 3, the energy storage device type determination criteria data 150 is data for determining the type of energy storage device 5 connected to the energy storage device connection unit 51 (e.g., a combination of high current short time output type / low current long time output type, large capacity / small capacity, etc.) from the reference data 110 and the various quantity data 220 of the energy storage device 5.

[0059] The main line power supply outage warning voice data 160 is voice data for notifying the person in charge of operating the cubicle type high voltage power receiving equipment 10 and users of the power supply destinations from the cubicle type high voltage power receiving equipment 10 in advance of an upcoming power outage.

[0060] FIG. 5 is a diagram showing an example of the data structure of the various quantity data 220. As shown in FIG. The various quantity data 220 is created for each power storage device 5 connected to the power storage device connection unit 51, and stores various information including various quantities related to the power storage device 5. The various quantity data 220 includes, for example, the connection unit ID of the power storage device connection unit 51 to which the power storage device 5 is connected, the manufacturer name and model of the power storage device 5, the type determined based on the power storage device type determination criteria data 150 (see FIG. 3), the storage capacity, the output voltage, the SoC, the SoH, and discharge characteristic data under load. Of course, data other than these may also be included as appropriate.

[0061] The discharge characteristic data under load is calculated in the battery mode based on the voltage and current values ​​measured by a voltmeter and ammeter built into the diagnostic device 57. Depending on the type of the power storage device 5, the discharge characteristic data under load can be compared with the discharge characteristic data under no load of the reference data 110, and used to calculate the SoC and estimate the predicted duration.

[0062] Returning to Fig. 3, the main line power demand data 230 is prepared for each main line to which power is supplied by the cubicle-type high voltage power receiving equipment 10, and stores various data indicating the history and statistics of power demand in the main line. For example, it includes a main line ID 232, power demand history data 234 for a predetermined period of time in the past (for example, the past 24 hours), and time-of-day power demand statistical data 236. Time-of-day power demand statistical data 236 may be prepared by month taking the season into consideration. These data are successively calculated and updated from the voltage value measured by the secondary voltmeter 30 and the current value measured by the secondary ammeter 32 in the high voltage power receiving mode.

[0063] The priority setting data 240 is various data for controlling the power output to each main line in an emergency such as a power outage, and determines how power is to be supplied to the power supply destination of the cubicle-type high-voltage power receiving equipment 10 in response to a variety of possible emergency situations.

[0064] FIG. 6 is a diagram showing an example of the data configuration of the priority setting data 240. As shown in FIG. The priority setting data 240 includes a priority trunk list 241 and one or more pieces of emergency setting data 242 .

[0065] The priority trunk list 241 is a list of trunk IDs of the M low-voltage AC power lines 28 (trunks) that are designated as "priority trunks," and specifies which power lines are to be given priority in power supply. It may also be a list of identification information of the secondary AC / AC inverters 26, or a list of identification information of output terminals of command signals to the secondary AC / AC inverters 26.

[0066] The emergency setting data 242 is prepared for each assumed situation when the power reception from the high voltage AC power line is cut off. One emergency setting data 242 includes an emergency setting ID 243, a situation condition 244, an output limit setting for each non-priority trunk 246, a reserved time setting for each non-priority trunk 247, and priority consumption setting data 250. Of course, data other than these may also be included as appropriate.

[0067] The situation condition 244 includes various data describing the situation in an emergency. For example, the situation condition 244 is described by combining one or more sub-conditions with AND or OR. As the sub-conditions, for example, a priority mains power demand condition 244a, a total stored power amount condition 244b, an exchange record condition 244c, and a power outage continuous time condition 244d may be used. Of course, other sub-conditions may be used, and one or more of these may be omitted.

[0068] The priority trunk power demand condition 244a is a condition for the future power demand of the priority trunk, predicted assuming that a power outage occurs immediately, based on the trunk-specific power demand data 230. For example, it can be described as a threshold or range of the power demand (e.g., kWh) of the priority trunk for every 10 minutes from now, starting from the current date and time 106.

[0069] The total stored electric energy condition 244b is a condition regarding the remaining amount of stored electric energy of the electric energy storage device 5 connected to the electric energy storage device connection unit 51.

[0070] The exchange record condition 244c is a condition on the exchange record of the power storage device 5 after the occurrence of a power outage. For example, it can be described by the range of a delay time for exchange, whether or not exchange is performed by type, and the like, which will be described later.

[0071] The power outage duration condition 244d is a condition regarding the time that has elapsed since the power outage start time 108. It can also be said to be a condition for determining the seriousness of the power outage.

[0072] The non-priority trunk output limit setting 246 and the non-priority trunk reserved time setting 247 are prepared for trunks other than the priority trunk (non-priority trunks) and specify how to limit the power output to the non-priority trunk in an emergency when a situation that satisfies the situation condition 244 occurs. The non-priority trunk output limit setting 246 specifies an upper limit ampere capacity that is lower than normal, and the non-priority trunk reserved time setting 247 specifies a time limit that is the time until the power supply is stopped.

[0073] By preparing a variety of situation conditions 244 and setting corresponding output limit settings 246 for each non-priority trunk and reserved time settings 247 for each non-priority trunk, it is possible to set how power will continue to be supplied to the power supply destination during a power outage.

[0074] For example, in a situation where the total amount of stored power is relatively abundant, power is supplied in the same manner as in normal times, regardless of whether the power is a priority trunk or a non-priority trunk, but when the total amount of stored power decreases, output restriction to the non-priority trunk may be started. The degree of output restriction may be further tightened in a situation where a delay occurs in replacing the power storage device 5 or a situation where the power outage continues for a long time and it is likely to take a long time to restore the power outage. Overall, for example, the more severe the situation condition 244 is, the stricter the restriction set in the output restriction setting for each non-priority trunk 246 is, and the shorter the time length set in the securing time setting for each non-priority trunk 247 is, and multiple stages can be set.

[0075] The priority consumption setting data 250 is data that specifies the priority order of which type of storage device 5 (for example, a combination of a large current short-time output type or a small current long-time output type, depending on the application, and a large capacity or a small capacity type) of storage device 5 connected to the storage device connection unit 51 should be used preferentially as a power source (whether to consume stored power) during a power outage (in battery mode).

[0076] One or more pieces of priority consumption setting data 250 are prepared, each of which includes a power storage device type configuration condition 252 for each type configuration of the power storage device 5 connected to the power storage device connection unit 51, and a type-specific priority consumption order list 254.

[0077] For example, it is possible that the situation condition 244 indicates "a situation in which power demand increases rapidly during a time period including the daytime peak value of power demand" and the power storage device type configuration condition 252 indicates "a large-current, short-time output type power storage device 5 and a small-current, long-time output type power storage device 5 are connected." In this case, it is possible for the type-specific consumption priority order list 254 to be an order list that gives a high consumption priority order to the "large-current, short-time output type" power storage device 5 and a low consumption priority order to the "small-current, long-time output type" power storage device 5 so that a large current can be supplied without interruption in response to a sudden increase in power demand.

[0078] As another example, a case may be considered in which the situation condition 244 indicates "a situation in which power demand is low at night" and the power storage device type configuration condition 252 indicates "a power storage device 5 of a large current short-time output type and a power storage device 5 of a small current long-time output type are connected." In this case, the type-specific consumption priority order list 254 may be an order list that gives a low consumption priority order to the power storage device 5 of the "large current short-time output type" and a high consumption priority order to the power storage device 5 of the "small current long-time output type."

[0079] Returning to FIG. 3, the applied emergency setting ID 280 indicates the result of a pre-determination made by the controller 90 as to which emergency setting data 242 from the priority setting data 240 to select and apply if a power outage occurs at the current date and time 106.

[0080] The consumption setting data 290 is prepared for each "power consumption storage device", that is, for each power storage device 5 used as a power source in battery mode, and stores a power consumption storage device connection ID 291 in association with a predicted duration 293 of the power consumption storage. The power consumption storage device connection ID 291 is the connection ID of the power storage device connection unit 51 to which the power storage device 5, which is the power consumption storage device, is connected.

[0081] The "consuming power storage device" is set during the high voltage power receiving mode before a power outage occurs, and is updated according to the situation at the time. Specifically, the "consuming power storage device" set during the high voltage power receiving mode refers to the type-specific consumption priority list 254 of the power storage device type configuration condition 252 that matches the current situation among the priority consumption setting data 250 of the emergency setting data 242 of the applied emergency setting ID 280 (see FIG. 6), and the power storage device 5 that can cover the "power demand expected immediately after the occurrence of a power outage" is selected from the power storage devices 5 currently connected, in order from the top of the priority consumption priority.

[0082] The "power demand expected immediately after a power outage" is the power demand within a predetermined time period after a power outage, assuming that a power outage has occurred. For example, the power demand data by trunk 230 (see FIG. 3) may be referenced to obtain a value obtained by multiplying the total power demand of all trunks within a predetermined time period (e.g., 30 minutes, 1 hour, etc.) from the current date and time 106 by a predetermined safety factor. Furthermore, the power demand may be a value obtained by subtracting from the value the power demand that is reduced by applying the output limit setting by non-priority trunk 246 and the reserved time setting by non-priority trunk 247 of the emergency setting data 242 indicated by the applied emergency setting ID 280.

[0083] The safety factor may be a predetermined fixed value, or may be determined based on the ratio of the power demand within a predetermined past time period indicated in the power demand history data 234 to the power demand within a predetermined past time period indicated in the time-of-day power demand statistical data 236. In other words, if the power demand for the past 24 hours is greater than the statistical data, a higher safety factor may be calculated and applied according to the ratio.

[0084] The predicted duration 293 is the estimated duration until the battery runs out, assuming that the storage device 5 designated as the "consuming storage device" covers the "power demand expected immediately after a power outage occurs," and is calculated, for example, as the time required for the SoC to reach a specified lower limit value.

[0085] The power storage device replacement history data 310 is created for each power storage device 5 when the operation mode is switched to the battery mode and when the power storage device 5 that has run out of battery is switched.

[0086] One piece of power storage device replacement history data 310 includes a power storage device connection ID 311 of the power storage device 5 that is set as the "power storage device that consumes power", a predicted replacement date and time 313, a replacement date and time 315, and a replacement delay time 317. The predicted replacement date and time 313 is the date and time at which the predicted duration 293 of the power storage device 5 that is set as the power storage device that consumes power has elapsed from the power outage start time 108. The replacement delay time 317 is the time that has elapsed from the predicted replacement date and time 313 until the power storage device 5 is actually replaced. The date and time at which the power storage device 5 is actually replaced is set as the replacement date and time 315. If the power storage device 5 is replaced before the predicted replacement date and time 313 is reached, the replacement delay time 317 is updated and set as zero.

[0087] FIG. 7 is a flowchart for explaining the flow of operations of the cubicle-type high voltage power receiving equipment 10. As shown in FIG. The cubicle-type high-voltage power receiving equipment 10 normally operates in high-voltage power receiving mode (step S2), and the controller 90 continues to control updating and storing the main line power demand data 230 (see Figure 3) based on the measurement values ​​of the secondary voltmeter 30 and the secondary ammeter 32 (step S4).

[0088] When the power storage device 5 is connected to the cubicle-type high-voltage power receiving equipment 10 for the first time, or when a replacement connection of the power storage device 5 is made, the controller 90 detects this from the measurement value of the power storage device voltmeter 53 (YES in step S10). Then, the controller 90 displays a predetermined input setting screen on the monitor 92, prompting the worker to input information such as the manufacturer name and model of the connected power storage device 5, and saves the input information as various quantity data 220 (see FIG. 5) (step S12).

[0089] Next, the controller 90 communicates with the BMS 6 of the connected power storage device 5 to acquire various quantities such as SoC and SoH, and judges the type by referring to the power storage device type judgment reference data 150 (see FIG. 3) (step S14). Note that if it is not possible to communicate with the BMS 6 or if there is a shortage in the various quantities, the controller 90 acquires various quantity data 220 by diagnosis by the diagnostic device 57, or supplements the various quantity data 220 by referring to the suitable reference data 110 (see FIG. 4).

[0090] Then, the controller 90 starts floating charging the connected power storage device 5 (step S16). That is, the controller 90 refers to charging pattern data from the reference data 110 (see FIG. 4) corresponding to the connected power storage device 5, and individually controls the DC / DC converters 59 connected to the power storage device connection units 51 whose connection has been detected so as to reproduce the charging pattern.

[0091] Next, the controller 90 determines whether a predetermined emergency setting determination execution condition is satisfied (step S20). The determination execution condition can be, for example, a predetermined cycle (every 5 minutes, every 10 minutes, every hour, etc.), or every time the power storage device 5 is replaced, or can be one or more of these timing conditions.

[0092] Then, if the judgment execution condition is satisfied (YES in step S20), the controller 90, assuming that a power outage has occurred at the present time, selects the emergency setting data 242 of the emergency setting data 242 in the priority setting data 240 that corresponds to the situation condition 244 that is suitable for the current situation, and sets the applicable emergency setting ID 280 (see Figure 3) (step S22).

[0093] Next, the controller 90 sets the power storage device 5 as the "power storage device consuming" and predicts and calculates the predicted duration 293 of each (step S24). Specifically, the controller 90 determines the "power demand expected immediately after a power outage occurs." Then, the power storage devices 5 are sorted according to the type-specific prioritized consumption order list 254 of the prioritized consumption setting data 250 that matches the emergency setting data 242 indicated by the applied emergency setting ID 280, and the power storage devices 5 are designated as "consuming power storage devices" in descending order of priority consumption. A total value of the power storage capacities of the power storage devices 5 designated as "consuming power storage devices" may be calculated, and the number of power storage devices 5 designated as "consuming power storage devices" may be increased in the sorted order until the total value reaches the "power demand expected immediately after a power outage occurs."

[0094] Next, if the measurement value of the primary voltmeter 20 becomes "0" or a value close to "0" that corresponds to a power outage, the controller 90 determines that the reception of power from the high-voltage AC power line has stopped, that is, that there has been a "power outage" (YES in step S50), and the controller 90 executes battery mode processing (step S52).

[0095] 8 and 9 are flowcharts for explaining the flow of the battery mode process. As shown in FIG. 8, in the battery mode process, the controller 90 first records the power outage start time 108 (step S62), and switches the operation mode to the "battery mode" (step S64).

[0096] Specifically, for the DC / DC converter 59 corresponding to the power storage device 5 designated as the "power consumption storage device", the controller 90 instructs and controls the current flow direction and power conversion operation so as to convert the DC power of the power storage device 5 into a predetermined DC voltage for output on the intermediate DC line 60. For the DC / DC converter 59 corresponding to the power storage device 5 not designated as the "power consumption storage device", the controller 90 stops operation and turns off the connection with the intermediate DC line 60.

[0097] Then, the controller 90 creates the power storage device replacement history data 310 and starts managing it (step S66). At this time, a predicted replacement date and time 313 is determined for each power storage device 5 that is determined to be a "power storage device consuming".

[0098] Next, the controller 90 starts control for notifying the predicted replacement date and time 313 of the electricity storage device 5 being consumed (step S68). Specifically, for example, a list of the predicted replacement dates and times 313 of the electricity storage devices 5 that have not been replaced is displayed on the monitor 92, and a caution or warning is displayed a predetermined time before the predicted replacement date and time 313. The display of the list of the predicted replacement dates and times 313 supports the creation of a work plan for replacing the electricity storage devices 5.

[0099] The controller 90 monitors the remaining capacity for each power storage device 5 that is considered to be a consuming power storage device, and detects whether there is a consuming power storage device whose remaining capacity has reached a predetermined switching target (step S70). When detected (YES in step S70), the controller 90 selects the "next consuming power storage device" based on the priority consumption order determined by the type-specific priority consumption order list 254 of the priority consumption setting data 250 that is suitable for the current situation among the emergency setting data 242 indicated by the applied emergency setting ID 280. The "next consuming power storage device" is a power storage device 5 to be used as the next power source in place of the power storage device 5 whose remaining capacity has reached the switching target. The controller 90 selects the "next consuming power storage device" from among the power storage devices 5 connected to the power storage device connection unit 51, other than the current consuming power storage device (step S72).

[0100] Then, the controller 90 starts consumption by the power storage device 5, which is the "next consuming power storage device", and then stops the use (consumption) of the "consuming power storage device" whose remaining capacity detected in step S70 has reached the switching target value (step S74).

[0101] That is, the power storage device 5 controls the DC / DC converter 59 of the power storage device 5 that is the "next power consuming storage device" to instruct and control the flow direction and power conversion operation so as to convert the DC power of that power storage device 5 into a predetermined DC voltage and output it to the intermediate DC line 60. Thereafter, the power storage device 5 that is the "power consuming storage device" and whose remaining capacity detected in step S70 has reached the switching reference value is controlled to turn off the power output to the intermediate DC line 60.

[0102] Next, the controller 90 updates the setting of the "consuming power storage device" to the power storage device 5 of the "next consuming power storage device" (step S76). Specifically, the consumption setting data 290 of the "consuming power storage device" whose remaining capacity detected in step S70 has reached the switching reference value is discarded, and new consumption setting data 290 of the "next consuming power storage device" is created.

[0103] Next, the controller 90 displays on the monitor 92 a notification requesting the user to replace the power storage device 5, which is the "power storage device that consumes electricity" detected in step S70 (step S78).

[0104] Furthermore, if replacement of the power storage device 5 is detected while operating in battery mode (YES in step S80), the controller 90 accepts input of information such as the manufacturer name and model of the power storage device 5 that has been newly connected as a result of the replacement (step S82; equivalent to step S12), and obtains various quantities and determines the type (step S84; equivalent to step S14).

[0105] Then, the controller 90 adds new power storage device replacement history data 310 for the newly connected power storage device 5 (step S86). Since the situation has changed due to the replacement of the power storage device 5, the controller 90 re-determines the applied emergency setting ID 280, and updates the predicted duration 293 for each power storage device 5 that is determined to be a "power storage device" based on the emergency setting data 242 indicated by the applied emergency setting ID 280 after the re-determination (step S88).

[0106] 9, the controller 90 judges whether there is any non-priority trunk that is about to be cut off from power supply (step S100). Specifically, for example, the controller 90 judges, from among the non-priority trunks, a non-priority trunk in which the measured current value of each secondary ammeter 32 has reached a predetermined ratio of the upper limit ampere capacity specified by the output limit setting for each non-priority trunk 246 of the emergency setting data 242 indicated by the applied emergency setting ID 280, as a "non-priority trunk in which power supply is about to be cut off."

[0107] Furthermore, the controller 90 calculates, for each non-priority trunk, the elapsed time from the power outage start time 108, i.e., the accumulated time for which power supply has continued since the occurrence of the power outage, based on the power demand history data 234. A non-priority trunk for which the calculated accumulated time has reached a predetermined ratio (e.g., 80% to 90%) of the reserved time specified by the reserved time setting for each non-priority trunk 247 in the emergency setting data 242 indicated by the applied emergency setting ID 280, is determined to be a "non-priority trunk for which a power supply interruption is imminent."

[0108] If there is a "non-priority trunk line that is about to be cut off in power supply" (YES in step S100), the controller 90 reads out the trunk line-specific power supply cutoff warning audio data 160 of the non-priority trunk line and causes the broadcasting equipment 98 to emit the audio of the audio data (step S102).

[0109] Thereafter, if a non-priority trunk is encountered that has reached the output limit indicated by the non-priority trunk specific output limit setting 246 of the emergency setting data 242 indicated by the applied emergency setting ID 280 (YES in step S110), the controller 90 controls the secondary AC / AC inverter 26 of the corresponding non-priority trunk to stop the power supply to the non-priority trunk (step S112).

[0110] In addition, if a non-priority trunk appears that has reached the reservation time indicated by the reservation time setting for each non-priority trunk 247 in the emergency setting data 242 indicated by the applied emergency setting ID 280 (YES in step S114), the controller 90 controls the secondary AC / AC inverter 26 of the corresponding non-priority trunk to stop the power supply to the non-priority trunk (step S116).

[0111] Next, the controller 90 judges whether a predetermined emergency setting judgment execution condition is satisfied. If the judgment is affirmative (YES in step S120), the applicable emergency setting ID 280 is judged again, and the predicted duration 293 for each power storage device 5 that is determined as a "power storage device consuming" is updated based on the emergency setting data 242 indicated by the applicable emergency setting ID 280 after the re-judgment (step S122).

[0112] The controller 90 repeats steps S70 to S122 until the power outage ends (NO in step S124). Even during the battery mode, the applied emergency setting ID 280 is updated each time the determination execution condition for the emergency setting is satisfied. At that time, the emergency setting data 242 according to the actual power usage at the power supply destination of the cubicle-type high-voltage power receiving equipment 10 during the battery mode is referenced. Then, the "next consuming power storage device" is selected and switched based on the consumption priority order in the emergency setting data 242 indicated by the applied emergency setting ID 280 updated in the processing of steps S70 to S78. Therefore, it is possible to appropriately and dynamically change the consumption allocation of the power storage device 5 according to the actual power usage at the power supply destination of the cubicle-type high-voltage power receiving equipment 10.

[0113] When the power outage ends (YES in step S124), the controller 90 ends the battery mode process.

[0114] 7, when the battery mode process is terminated, the controller 90 switches the operation mode to the high voltage receiving mode (step S130). The controller 90 controls the DC / DC converters 59 corresponding to the respective power storage devices 5 to convert a predetermined DC voltage of the intermediate DC line 60 into a DC voltage suitable for charging and output the converted voltage to the power storage devices 5.

[0115] As described above, according to this embodiment, the cubicle-type high-voltage power receiving equipment 10 can continue to supply power during a power outage even if the stored power of the connected power storage device 5 runs out and the battery runs out, by replacing the battery.

[0116] That is, in the event of a power outage, the cubicle-type high-voltage power receiving equipment 10 switches from a high-voltage power receiving mode to a battery mode in which the power source is the stored power of the power storage device 5 connected to the power storage device connection unit 51, converts the stored power of the power storage device 5 into predetermined AC power, and further converts it into low-voltage AC power by inverters for each of the M trunk lines and outputs it. At that time, the conversion operation of the secondary AC / AC inverter 26 for each of the trunk lines can be controlled based on the priority settings preset for the M trunk lines and the amount of stored power of the power storage device 5.

[0117] Therefore, the cubicle-type high-voltage power receiving equipment 10 can output continuous power even during a power outage by appropriately replacing the power storage device 5. In addition, it is possible to adjust various output powers according to the amount of stored power in the power storage device 5 and the priority of each trunk line. Therefore, it is possible to output continuous power in a flexible manner that corresponds to the situation during a power outage, for example, the power demand situation of each trunk line and the storage situation of the power storage device 5.

[0118] Furthermore, the cubicle-type high-voltage power receiving equipment 10 repeatedly determines the emergency situation, and can select the power storage device 5 to be used as the power source in the battery mode based on the priority consumption order by type of power storage device 5 according to the emergency situation at that time. In other words, according to the emergency situation at that time, the power storage device 5 that consumes the stored power preferentially can be variably selected from the power storage devices 5 connected to the power storage device connection unit 51, and the power output to the priority trunk line can be preferentially secured.

[0119] This in turn suppresses the concentration of battery exhaustion that occurs simultaneously in all connected power storage devices 5. It is possible to ensure time to replace the power storage devices 5 one by one while continuing to output power from the cubicle-type high-voltage power receiving equipment 10, thereby realizing stable and continuous power supply operation in battery mode.

[0120] Although an example of an embodiment to which the present invention is applied has been described above, the forms to which the present invention can be applied are not limited to the above-described embodiment itself, and constituent elements can be replaced, omitted, or added as appropriate.

[0121] For example, while FIG. 2 shows a configuration in which the primary voltmeter 20 is provided on the input side of the primary AC / AC inverter 22, it may be provided on the output side of the primary AC / AC inverter 22, i.e., on the intermediate AC power line 24.

[0122] [Summary] The contents disclosed in this specification can be summarized as follows.

[0123] (First invention) A housing case; an electric power conversion device that is installed in the housing and converts a predetermined high voltage AC power of 3,000V or more and 15,000V or less that is received, and outputs AC power of less than 1,000V via a power line to M (M≧2) trunk lines; a storage device connection portion disposed outside the housing and connected to a replaceable storage device; a controller that performs control to switch from a high voltage power receiving mode in which the predetermined high voltage AC power is used as a power source to a battery mode in which stored power of a power storage device connected to the power storage device connection section is used as a power source; Equipped with The electrical device includes: an integrated energy storage power conversion unit that converts stored power of an energy storage device connected to the energy storage device connection unit into AC power as a power source and outputs the AC power to the power line; M inverters corresponding to the M trunk lines, each of which converts AC power flowing through the power line into low-voltage AC power for the corresponding trunk line; Including, The controller, Controlling an operation of the integrated energy storage and power conversion unit; In the battery mode, controlling conversion operations of the M inverters based on a priority setting preset for the M trunk lines and the amount of stored power of the power storage device; To carry out High voltage power receiving equipment.

[0124] (Second Invention) The priority setting includes at least an emergency setting for limiting output. A high-voltage power receiving equipment according to a first invention.

[0125] (Third Invention) The emergency setting includes a priority trunk line, an upper limit ampere capacity, and a reserved time, A high-voltage power receiving equipment according to a second invention.

[0126] (Fourth Invention) The emergency setting includes a setting for limiting output in multiple stages. The high-voltage power receiving equipment of the second or third invention.

[0127] (Fifth Invention) The storage device connection portion has N (N≧2) connection portions that are individually connected to the replaceable storage devices, The electrical device includes: an intermediate DC power conversion unit that converts stored power output from each of the power storage devices connected to the N connection units into a predetermined intermediate DC power; Further comprising: the integrated energy storage power conversion unit converts the predetermined intermediate DC power converted by the intermediate DC power conversion unit into AC power and outputs the AC power to the power line; The controller controls the operation of the intermediate DC power conversion unit and the integrated storage power conversion unit. A high-voltage power receiving equipment according to any one of the first to fourth inventions.

[0128] (Sixth Invention) the controller, in the battery mode, controls the intermediate DC power conversion unit using the priority setting to variably select, from among the power storage devices connected to the N connection units, a power storage device that is to consume stored power preferentially; A high-voltage power receiving equipment according to a fifth invention.

[0129] (Seventh Invention) An alarm device, Further comprising: The controller controls the notification device to notify a replacement timing of a power storage device that consumes stored power preferentially. A high-voltage power receiving equipment according to a sixth invention. [Explanation of symbols]

[0130] 5…Electricity storage device 10...Cubicle-type high-voltage power receiving equipment 14...Electrical equipment for power conversion 22...Primary AC / AC inverter 24...Intermediate AC power line 26...Secondary AC / AC inverter 28...Low voltage AC power line 51...electricity storage device connection part 53…Storage device voltmeter 57...Diagnostic equipment 59…DC / DC converter 60...Intermediate DC line 62…AC / DC inverter 90…Controller 100...Control program 108…Power outage start time 110…Reference data 150…Criteria data for determining the type of storage device 220...Various data 230…Power demand data by trunk line 240…Priority setting data 241…Priority trunk line list 242...Emergency setting data 244...Situational Conditions 246…Output limit setting for non-priority trunk lines 247…Secure time setting for non-priority trunk lines 250…Priority consumption setting data 254…Consumption priority list by type 280…Applicable emergency setting ID 290…Consumption setting data 300…Power supply performance data after power outage by main line

Claims

1. A housing case; an electric power conversion device that is installed in the housing and converts a predetermined high voltage AC power of 3,000 V or more and 15,000 V or less that is received, and outputs AC power of less than 1,000 V to M (M≧2) trunk lines via a power line; a storage device connection portion disposed outside the housing and connected to a replaceable storage device; a controller that performs control to switch from a high voltage power receiving mode in which the predetermined high voltage AC power is used as a power source to a battery mode in which stored power of a power storage device connected to the power storage device connection section is used as a power source; Equipped with The electrical device includes: an integrated energy storage power conversion unit that converts stored power of an energy storage device connected to the energy storage device connection unit into AC power as a power source and outputs the AC power to the power line; M inverters corresponding to the M trunk lines, each of which converts AC power flowing through the power line into low-voltage AC power for the corresponding trunk line; Including, The controller, Controlling an operation of the integrated energy storage and power conversion unit; In the battery mode, controlling conversion operations of the M inverters based on a priority setting preset for the M trunk lines and the amount of stored power of the power storage device; To carry out High voltage power receiving equipment.

2. The priority setting includes at least an emergency setting for limiting output. The high voltage power receiving equipment according to claim 1.

3. The emergency setting includes a priority trunk line, an upper limit ampere capacity, and a reserved time, The high voltage power receiving equipment according to claim 2.

4. The emergency setting includes a setting for limiting output in multiple stages. The high voltage power receiving equipment according to claim 2 or 3.

5. The storage device connection portion has N (N≧2) connection portions that are individually connected to the replaceable storage devices, The electrical device includes: an intermediate DC power conversion unit that converts stored power output from each of the power storage devices connected to the N connection units into a predetermined intermediate DC power; Further comprising: the integrated energy storage power conversion unit converts the predetermined intermediate DC power converted by the intermediate DC power conversion unit into AC power and outputs the AC power to the power line; The controller controls the operation of the intermediate DC power conversion unit and the integrated storage power conversion unit. The high voltage power receiving equipment according to any one of claims 1 to 3.

6. the controller, in the battery mode, controls the intermediate DC power conversion unit using the priority setting to variably select, from among the power storage devices connected to the N connection units, a power storage device that is to consume stored power preferentially; The high voltage power receiving equipment according to claim 5.

7. An alarm device, Further comprising: The controller controls the notification device to notify a replacement timing of a power storage device that consumes stored power preferentially. The high voltage power receiving equipment according to claim 6.

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