JP2019112036A - Power storage device for railway - Google Patents

Abstract

To provide a power storage device for railway that can effectively use a power storage unit.SOLUTION: A power storage device 10 for railway includes: first wiring 111 electrically connected to a railway vehicle 21; a regenerating power storage unit 110 connected to the first wiring 111 and charging regenerative electric power from the railway vehicle 21 therein; and second wiring 112 connected to the regenerating power storage unit 110. The second wiring 112 is electrically connected to load 23 other than the vehicle 21.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a railway power storage device including a power storage unit electrically connected to a railway vehicle.

  BACKGROUND Conventionally, there has been known a railway power storage device including a power storage unit electrically connected to a railway vehicle. For example, Patent Document 1 discloses an electric railway power system that charges the storage battery (storage unit) with power of a feeding circuit that supplies power to a train (vehicle) in the electric railway and discharges the power of the storage battery into the feeding circuit. (Electric power storage device for railways) is disclosed.

JP, 2011-056996, A

  However, the above-described conventional railway power storage device has a problem that the power storage unit can not be effectively used. In the above-described conventional railway power storage device, the storage unit is for traveling a vehicle, and the use of the storage unit is limited, so that the storage unit is not effectively used.

  The present invention has been made in view of the above problems, and it is an object of the present invention to provide a railway power storage device capable of effectively utilizing a power storage unit.

  In order to achieve the above object, the railway power storage device according to an aspect of the present invention is connected to a first wiring electrically connected to a railway vehicle and the first wiring, and the electric power storage device from the vehicle And a second wiring connected to the storage battery unit for regeneration, the second wiring being electrically connected to a power load other than the vehicle.

  According to this, in the railway power storage device, the first wiring electrically connected to the vehicle is connected to the regenerative power storage unit that charges the regenerative power from the vehicle, and is connected to the regenerative power storage unit. Two wires are electrically connected to power loads other than the vehicle. That is, since the regenerative power storage unit for charging the regenerative power from the vehicle by the first wiring is electrically connected to the power load other than the vehicle by the second wiring, the power load is supplied to the power load via the second wiring. Can be supplied. For example, when electric power is not supplied to the electric power load, the regenerative electric power from the vehicle can be charged to the electric storage unit for regeneration by the first wiring. When the regenerative power storage unit is fully charged, power can be supplied to the power load via the second wiring. This makes it possible to increase the choice of power supply. It is also possible to reduce the risk that regenerative braking can not be performed if regenerative power can not be received when power remains. As described above, since the power storage unit for regeneration can be used to supply power to the power load, the power storage unit can be effectively used.

  Further, the second wiring may be connected to the first wiring.

  According to this, in the railway power storage device, since the second wire is connected to the first wire, the regenerative power from the vehicle can be directly supplied to the power load. For example, when there is no need to charge the regenerative power storage unit or there is a high need to supply power to the power load, the regenerative power from the vehicle is not charged to the regenerative power storage unit but to the power load. It can be supplied directly. If regenerative power is supplied directly to the power load without charging it to the storage unit for regeneration, it is possible to suppress loss and heat generation due to internal resistance of the storage unit for regeneration, restriction due to charge and discharge capabilities, deterioration of the storage unit for regeneration, etc. it can. In this manner, power can be supplied to the power load according to the need to charge the regenerative power storage unit or the need to supply power to the power load. Thus, power can be efficiently supplied to the power load while achieving effective use of the power storage unit.

  Furthermore, according to the state of the storage battery unit for regeneration, a first control unit may be provided to directly supply the electric power load with regenerative electric power supplied from the first wiring.

  According to this, the railway power storage device directly supplies the regenerative power from the vehicle to the power load according to the state of the regenerative power storage unit. For example, when it is not necessary to charge the storage unit for regeneration, when the storage unit for regeneration, its monitoring device, etc. is abnormal, when the deterioration of the storage unit for regeneration is progressing, the temperature of the storage unit for regeneration is high, etc. In the above, regenerative electric power can be supplied directly to the electric power load without charging the electric storage unit for regeneration. Thereby, effective utilization of regenerative power can be achieved.

  Further, the first control unit is configured to use the regenerative power supplied from the first wiring when the value indicating the SOC (State Of Charge) of the regenerative power storage unit is equal to or greater than the first threshold for regeneration. The power load may be supplied without passing through the storage unit.

  According to this, the railway power storage device directly supplies regenerative power from the vehicle to the power load when the value indicating the SOC (State Of Charge) of the regenerative power storage unit is equal to or greater than the first threshold for regeneration. For example, when the SOC of the regenerative power storage unit indicates a relatively high value, there is no need to charge the regenerative power storage unit, or if the regenerative power storage unit can not be charged in the fully charged state, The power load can be supplied directly without discarding the regenerative power from the vehicle. Thereby, effective utilization of regenerative power can be achieved.

  Furthermore, a second control unit may be provided to supply the electric power load with the electric power from the electric storage unit for regeneration according to the state of the electric storage unit for regeneration.

  According to this, the railway power storage device supplies the power from the regenerative power storage unit to the power load according to the state of the regenerative power storage unit. For example, power from the regenerative power storage unit can be supplied to the power load when the regenerative power storage unit is sufficiently charged or in an emergency. Even when the regenerative power storage unit is not sufficiently charged, the power from the regenerative power storage unit can be supplied to an important load that is related to heating and cooling and life. As described above, since the power storage unit for regeneration can be used to supply power to the power load, the power storage unit can be effectively used.

  The second control unit may supply power from the regenerative storage unit to the power load when a value indicating the SOC of the regenerative storage unit is equal to or greater than a second regeneration threshold. .

  According to this, the railway power storage device supplies the power from the power storage unit for regeneration to the power load when the value indicating the SOC of the power storage unit for regeneration is greater than or equal to the second threshold value for regeneration. For example, at nighttime when the vehicle is not traveling, if the SOC of the regenerative power storage unit indicates a value required to drive the vehicle the next day or more, the necessary power of the power from the regenerative power storage unit is required. Remaining power more than (the second threshold for regeneration) can be supplied to a power load such as lighting. As described above, at night and the like, since the power storage unit for regeneration can be used to supply power to the power load, the power storage unit can be effectively used.

  Furthermore, the second control unit may further include an emergency storage unit for supplying power to the vehicle, and the second control unit may be configured to select the SOC indicating the regeneration storage unit if the value is smaller than the second regeneration threshold. The power from the regenerative power storage unit may be controlled to be able to be supplied to the power load.

  According to this, the railway power storage device further includes the emergency power storage unit, and the value from the power storage unit for regeneration is used even when the value indicating the SOC of the power storage unit for regeneration is smaller than the second threshold value for regeneration. It has a function that can be controlled to supply power to the power load. That is, since the emergency storage unit can supply power to the vehicle even if the SOC of the regeneration storage unit is small (for example, 0), the SOC of the regeneration storage unit can be reduced. For example, when it is necessary to supply power to the electric load at the time of disaster etc., the power from the electric storage battery for regeneration is required until the SOC of the electric storage battery for regeneration becomes zero. Power can be supplied to the As described above, even in the event of a disaster or the like, the regenerative power storage unit can be used to supply power to the power load, so that the power storage unit can be effectively used.

  In addition, the second control unit may supply power from the regenerative power storage unit and the emergency power storage unit to the vehicle and the power load at the time of a power failure.

  According to this, at the time of a power failure, the railway power storage device supplies power to the vehicle and the power load from both the regenerative power storage unit and the emergency power storage unit. As a result, it is possible to effectively utilize the power storage unit as a measure against power shortage at the time of a power failure.

  Further, the second control unit may supply the power from the regenerative power storage unit and the emergency power storage unit to the power load after supplying power from the regeneration power storage unit and the emergency power storage unit to the vehicle at the time of a power failure.

  According to this configuration, the railway power storage device supplies power to the power load after supplying power to the vehicle from both of the regenerative power storage unit and the emergency power storage unit at the time of a power failure. Thus, at the time of a power failure, after moving the vehicle to the station building first, power can be supplied to the power load, and the storage unit can be effectively used.

  The second control unit may supply power to the emergency power storage unit at the time of power recovery after a power failure.

  According to this, the railway power storage device performs charging by supplying power to the emergency power storage unit at the time of power recovery after a power failure. As a result, when the vehicle is driven after power recovery, the emergency power storage unit is in a usable state, so that the emergency power storage unit can be used immediately, for example, when a power failure occurs again, effectively utilizing the power storage unit. Can be

  Further, the second control unit may control charging / discharging of the emergency power storage unit according to the operation status of the vehicle.

  According to this, the railway power storage device controls charging / discharging of the emergency power storage unit according to the operation status such as the number of operation of the vehicle. As a result, the emergency power storage unit can supply the vehicle or the power load with more power than necessary according to the operation status, and can be used for peak power consumption etc., so that the power storage unit can be used effectively. Can.

  Further, third control for supplying power from the regenerative power storage unit to at least one of the vehicle and the power load according to the power used by the power using facility including at least one of the vehicle and the power load It is possible to provide a unit.

  According to this, the railway power storage device supplies the power from the regenerative power storage unit to at least one of the vehicle and the power load according to the power used by the power using facility. As a result, since the power storage unit for regeneration can be used for peak cutting of power consumption and the like, the power storage unit can be effectively used.

  The vehicle may further include an emergency storage unit for supplying electric power to the vehicle, and the regeneration storage unit may have higher high rate characteristics than the emergency storage unit.

  According to this, the regenerative power storage unit has a high rate characteristic higher than that of the emergency power storage unit. For this reason, when instantaneous large power is required, the load on the instantaneous large power can be reduced by discharging from the regenerative power storage unit. As described above, it is possible to reduce the instantaneous electric power load of a substation or the like by utilizing the regenerative power storage unit, so that the power storage unit can be effectively used.

  Further, the third control unit is configured to control the power from the storage unit for regeneration according to a signal indicating that the power usage of the power using facility has become equal to or higher than a third threshold for regeneration, at least the vehicle and the power load. It may be supplied to one side.

  According to this, the railway power storage device stores the power from the regenerative power storage unit, at least one of the vehicle and the power load, according to a signal indicating that the power usage of the power using facility has become equal to or higher than the third threshold for regeneration. Supply to Thus, for example, when power used from the storage unit for regeneration is supplied to at least one of the vehicle and the power load at the peak of the used power at the time of commuting rush or momentary power fluctuation, the peak of the instantaneous power consumption You can cut it. As a result, the regeneration power storage unit can be utilized to achieve load leveling of electric power and contribute to power saving measures, so that the power storage unit can be effectively used.

  Furthermore, an emergency storage unit for supplying power to the vehicle, and a fourth control unit for supplying power from the emergency storage unit to the power load according to the state of the emergency storage unit, It may be provided.

  According to this, the railway power storage device supplies the power from the emergency power storage unit to the power load according to the state of the emergency power storage unit. For example, power from the emergency storage unit can be supplied to the power load when the emergency storage unit is sufficiently charged or in an emergency. Even when the emergency power storage unit is not fully charged, the power from the emergency power storage unit can be supplied to an important load that may be air-conditioning or life-threatening. As described above, since the emergency storage unit can be used to supply power to the power load, the storage unit can be effectively used.

  The fourth control unit may supply power from the emergency storage unit to the power load when a value indicating the SOC of the emergency storage unit is equal to or greater than an emergency first threshold. .

  According to this, the railway power storage device supplies the power from the emergency power storage unit to the power load when the value indicating the SOC of the emergency power storage unit is equal to or greater than the emergency first threshold. For example, if the SOC of the emergency power storage unit indicates a value necessary for traveling the vehicle the next day or more at night or during a disaster, the necessary power of the power from the emergency power storage unit (emergency It is possible to supply the remaining power above the threshold value to the power load such as lighting. As described above, the emergency power storage unit can be used to supply power to the power load at night and the like, so that the power storage unit can be effectively used.

  Further, the power control system further includes a power generation facility for charging the emergency power storage unit, and the fourth control unit supplies power from the power generation facility to the power load according to the state of the emergency power storage unit. May be

  According to this, the railway power storage device further includes a power generation facility, and supplies power from the power generation facility to the power load according to the state of the emergency power storage unit. For example, if it is not necessary to charge the emergency storage unit, if the emergency storage unit or its monitoring device is abnormal, if the emergency storage unit is deteriorating, if the temperature of the emergency storage unit is high, etc. In the above, the generated power from the power generation facility can be directly supplied to the power load without charging the emergency power storage unit. This makes it possible to effectively use the generated power.

  The fourth control unit may supply power from the power generation facility to the power load when the value indicating the SOC of the emergency power storage unit is equal to or greater than an emergency second threshold.

  According to this, the railway power storage device supplies the power from the power generation facility to the power load when the value indicating the SOC of the emergency power storage unit is equal to or greater than the emergency second threshold. For example, when the emergency power storage unit SOC has a relatively high value, it is not necessary to charge the emergency power storage unit, or the emergency power storage unit can not be charged in a fully charged state. The power load can be directly supplied without discarding the power generated from the power generation facility. This makes it possible to effectively use the generated power.

  Furthermore, according to the power used by the emergency power storage unit for supplying power to the vehicle and the power using facility including at least one of the vehicle and the power load, the power from the emergency power storage unit may be And a fifth control unit that supplies power to at least one of the power loads.

  According to this, the railway power storage device includes the emergency power storage unit, and supplies the power from the emergency power storage unit to at least one of the vehicle and the power load according to the power used by the power using facility. . Thus, the emergency power storage unit can be utilized for peak cutting of power consumption and the like, so that the power storage unit can be effectively used.

  Further, the emergency power storage unit may have a capacity higher than that of the regeneration power storage unit.

  According to this, the emergency power storage unit has a higher capacity than the regenerative power storage unit. For this reason, when it is necessary to supply power for a long time, discharging from the emergency power storage unit can reduce the burden of power. As described above, since it is possible to reduce the burden of power consumption of a substation or the like by utilizing the emergency power storage unit, it is possible to achieve effective use of the power storage unit.

  Further, the fifth control unit is configured to transmit the power from the emergency storage unit to at least the vehicle and the power load in accordance with a signal indicating that the power usage of the power using facility has reached an emergency third threshold or more. It may be supplied to one side.

  According to this, the railway power storage device stores the power from the emergency storage unit, at least one of the vehicle and the power load, in accordance with a signal indicating that the power used by the power using facility has become equal to or higher than the third travel threshold. Supply to Thus, for example, when the peak of power consumption is long during commuting rush hours, peak power consumption can be cut for a long time by supplying power from the emergency power storage unit to at least one of the vehicle and the power load. Can. As a result, the emergency power storage unit can be utilized to achieve load leveling of electric power and contribute to power saving measures, so that the power storage unit can be effectively used.

  The present invention can not only be realized as such a railway power storage device, but also includes the railway power storage device and at least one of a vehicle, a station building, a power load, a substation and a command station. It can also be realized as a storage system.

  According to the railway power storage device of the present invention, the power storage unit can be effectively used.

It is the schematic which shows the application example of the power storage device for railways concerning embodiment. It is a block diagram showing composition of an electricity storage device for railroads concerning an embodiment. It is a flowchart which shows an example of the process which the vehicle side control part which concerns on embodiment, and a load side control part control the electrical storage part for regeneration. It is a flowchart which shows an example of the process which the load side control part which concerns on embodiment controls an emergency electrical storage part. It is a flowchart which shows an example of the peak cut process which the vehicle side control part which concerns on embodiment, and a load side control part perform. It is a flowchart which shows an example of the peak cut process by the emergency storage part which the vehicle side control part which concerns on embodiment, and a load side control part performs. It is a flowchart which shows an example of the peak cut process by the electrical storage part for regeneration which the vehicle side control part which concerns on embodiment, and a load side control part performs.

  Hereinafter, a railway power storage device according to an embodiment of the present invention will be described with reference to the drawings. The embodiments described below show general or specific examples. The numerical values, shapes, components, arrangement positions and connection forms of the components, steps (steps), order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Among the components in the following embodiments, components that are not described in the independent claim indicating the highest concept are described as optional components. Each drawing is a schematic view, and the dimensions and the like are not necessarily illustrated exactly. In each of the drawings, the same or similar components are denoted by the same reference numerals.

Embodiment
[1 Outline of Railway Power Storage Device 10]
The schematic configuration of the railway power storage device 10 in the present embodiment will be described. FIG. 1 is a schematic view showing an application example of the railway power storage device 10 according to the present embodiment.

  As shown in FIG. 1, the railway power storage device 10 is a power storage device (power storage device) provided in a railway, and is electrically connected to the power usage facility 20 to be connected to the power usage facility 20. Charge and discharge power. The power using facility 20 has a plurality of railway cars 21 and a load 23 which is a power load provided in a plurality of station buildings 22 or the like. The railway power storage device 10 is electrically connected to the plurality of vehicles 21 and the plurality of loads 23 in the power using facility 20, and charges and discharges power between the plurality of vehicles 21 and the plurality of loads 23. Do.

  Specifically, the railway power storage device 10 is electrically connected to the plurality of vehicles 21 via the power line 11 and the train line 24, and charges the power (regenerated power) from the plurality of vehicles 21. , Supply (discharge) power to the plurality of vehicles 21. The railway power storage device 10 is electrically connected to the plurality of loads 23 via the plurality of power lines 12 and supplies (discharges) power to the plurality of loads 23. The power use facility 20 may have only one vehicle 21 or may have only one load 23. The railway power storage device 10 may be connected to only one vehicle 21 or may be connected to only one load 23.

  The vehicle 21 is a railway vehicle (train) for an electric railway that uses an overhead wire and a rail (track) for power transmission for power supply. The train line 24 is a linearly arranged power supply consisting of an overhead line and a track, and supplies power to the vehicle 21. The vehicle 21 is not particularly limited as long as it is a railway vehicle, for example, a vehicle for an electric railway using two power transmission rails for power supply, a vehicle for an electric railway using a third railway for power supply, It may be a vehicle for an electric railway such as a monorail that uses one rail for power supply, a vehicle for an electric railway driven by a linear motor, or the like.

  The vehicle 21 is a vehicle capable of power regeneration configured to generate regenerative power at the time of braking, and supplies the generated regenerative power to the railway power storage device 10 via the power line 11. For example, the vehicle 21 generates regenerative electric power by a regenerative brake that generates electric power by rotating the motor as a generator at the time of braking. The generated regenerative power may be supplied to the railway power storage device 10 for the surplus after being used by another vehicle 21 or the like, and all the generated regenerative power may be used for railway power storage. It may be supplied to the device 10.

  The load 23 is a power load provided in the station building 22 and is, for example, various devices using power such as lighting, an elevator, an escalator, a ticket gate, a ticket vending machine, and electric devices in a shop. The load 23 is a power load other than the vehicle 21. The load 23 may be a power load provided outside the station building 22 as long as the railway power storage device 10 can supply power. For example, the load 23 may be a building owned by a railway company, a convenience store, a department store, etc. It may be an electrical device in a facility. The load 23 may be an electrical device in a facility not owned by a railway company, or may be a load for charging an electric vehicle or the like.

  The power using facility 20 (the vehicle 21 and the load 23) is also electrically connected to the substation 30, and the power from the substation 30 is supplied. Power from the substation 30 is supplied to the vehicle 21 via the power line 31 and the train line 24, and power from the substation 30 is supplied to the load 23 via the power line 32.

  The substation 30 is a transformation equipment owned by a railway company, and is supplied with power from a power plant 40 or the like of a power company. The substation 30 converts the three-phase AC power sent from the power plant 40 or the like into DC power, reduces the voltage and rectifies the power, and supplies the rectified DC power to the vehicle 21 via the power line 31 and the train line 24 . The vehicle 21 performs powering using the supplied DC power. The substation 30 also supplies power to the load 23 via the power line 32. The power plant 40 may be a power generation facility owned by a railway company, and the substation 30 may be a transformer facility owned by a company other than a railway company such as a power company. Power may be supplied to the vehicle 21 and the load 23 from any equipment.

  The railway power storage device 10 is electrically connected to the operation control station 50 of the vehicle 21 and is configured to be able to receive a signal from the operation control station 50. The operation control center 50 is an organization that monitors the operation of the vehicle 21 or monitors the operation of the substation 30, and instructs the train crews and station staff to perform work. The operation control center 50 may be included in the power using facility 20 as a part of the power using facility 20.

  The arrangement position of the railway power storage device 10 is not particularly limited. For example, the railway power storage device 10 can be disposed in the station building 22, in the substation 30, in a location along the line between the station buildings 22, in the base of the vehicle 21, or the like.

[Detailed Description of Configuration of Railway Power Storage Device 10]
The configuration of the railway power storage device 10 will be described in detail. FIG. 2 is a block diagram showing the configuration of the railway power storage device 10 according to the present embodiment.

  As shown in FIG. 2, the railway power storage device 10 includes a power storage unit 100, a vehicle-side converter 200, a load-side converter 300, a power generation facility 400, and a storage unit 500.

  Power storage unit 100 is a power storage device electrically connected to power use facility 20 (vehicle 21 and load 23), and includes a power storage unit 110 for regeneration and a power storage unit 120 for emergency. Specifically, each of the regenerative power storage unit 110 and the emergency power storage unit 120 has a plurality of battery cells (unit cells) formed of a chargeable / dischargeable secondary battery. The secondary battery which comprises the said battery cell is non-aqueous electrolyte secondary batteries, such as a lithium ion secondary battery, for example. However, the secondary battery is not limited to the non-aqueous electrolyte secondary battery, and may be a secondary battery other than the non-aqueous electrolyte secondary battery, or may be a capacitor, and a solid electrolyte was used. It may be a battery.

  The regenerative power storage unit 110 is a power storage device that charges regenerative power from the vehicle 21 and supplies power to at least one of the vehicle 21 and the load 23. The battery cells of the regenerative power storage unit 110 have characteristics such that durability and performance maintenance performance and the like are prevented from being degraded more than the battery cells of the emergency power storage unit 120 with respect to repeated charge and discharge. The battery cells of regenerative power storage unit 110 have characteristics (high-rate characteristics higher than the battery cells of emergency power storage unit 120) suitable for input / output of a large current than the battery cells of emergency power storage unit 120. . For example, it is preferable that the regenerative power storage unit 110 be used with the SOC (State Of Charge) maintained in the range of 15% to 85%, and the SOC is maintained in the range of 30% to 70% for use It is more preferable that the SOC be maintained at about 50% for use.

  The emergency power storage unit 120 is a power storage device that charges power from the power generation facility 400 and supplies power to at least one of the vehicle 21 and the load 23. The battery cells of emergency power storage unit 120 have characteristics of higher energy density, that is, higher capacity than the battery cells of regenerative power storage unit 110. For example, the emergency power storage unit 120 is preferably maintained at an SOC of 70% or more, preferably 85% or more, and more preferably 100% (full charge). It is further preferred that the composition be maintained and used.

  Railroad power storage device 10 further includes a first wire 111 connecting regenerative power storage unit 110 and vehicle side converter 200, and a second wire 112 connecting regenerative power storage unit 110 and load side converter 300. Have. The railway power storage device 10 includes a third wire 121 connecting the emergency storage unit 120 and the vehicle-side converter 200, and a fourth wire 122 connecting the emergency storage unit 120 and the load-side converter 300. There is.

  With such a configuration, the first wiring 111 is electrically connected to the vehicle 21 via the vehicle-side converter 200, the power line 11, and the electric wire 24. The second wiring 112 is electrically connected to the load 23 via the load-side converter 300 and the power line 12. The second wiring 112 is connected to the regenerative power storage unit 110 and to the first wiring 111. The regenerative power storage unit 110 is connected to the first wiring 111 and the second wiring 112, and the first wiring 111 and the second wiring 112 are connected. The third wiring 121 and the fourth wiring 122 are similar to the configuration in the case where the power storage unit 110 for regeneration in the first wiring 111 and the second wiring 112 is paraphrased to the emergency power storage unit 120, so detailed description will be omitted. Do.

  The vehicle-side converter 200 is a DC / DC converter that converts between DC powers, and includes a vehicle-side control unit 210 that controls the DC power. Specifically, vehicle-side converter 200 is electrically connected to power line 11, and the regenerative power (DC power) from vehicle 21 supplied from power line 11 is stored in regenerative power storage unit 110. The voltage is adjusted to a voltage suitable for the first wiring 111. Vehicle-side converter 200 adjusts DC power from regenerative power storage unit 110 or emergency power storage unit 120 to a voltage suitable to be supplied to vehicle 21 and sends it to power line 11. Vehicle-side converter 200 may be configured as an independent device, or may be incorporated in another device as a circuit. In the present embodiment, the above-described voltage adjustment in vehicle-side converter 200 is performed by vehicle-side control unit 210, but may be performed by another control unit.

  The load-side converter 300 is a device having both functions of a DC / DC converter that performs conversion between DC powers and a DC / AC converter that performs conversion between DC power and AC power. It has a load-side control unit 310 that controls AC power. Specifically, load-side converter 300 is connected to power generation facility 400, and the DC power generated by power generation facility 400 is set to a voltage suitable to be supplied to emergency power storage unit 120 by the DC / DC converter. It adjusts and sends to the 4th wiring 122. Load-side converter 300 is electrically connected to power line 12 and converts DC power generated by power generation facility 400 into AC power of a voltage suitable to be supplied to load 23 by a DC / AC converter. , Send to the power line 12. Load-side converter 300 converts DC power from regenerative power storage unit 110 or emergency power storage unit 120 into AC power of a voltage suitable for supply to load 23 by a DC / AC converter, and generates power line 12. send. The load side converter 300 may be configured as an independent device or may be incorporated in another device as a circuit. In the present embodiment, the above-described voltage adjustment and the like in the load-side converter 300 are performed by the load-side control unit 310, but may be performed by other control units.

  Vehicle-side control unit 210 and load-side control unit 310 are configured to generate at least the regenerative power from vehicle 21, the power from power generation facility 400, the power from regenerative power storage unit 110 or the emergency power storage unit 120. It is a control part which controls to supply to one side. The vehicle-side control unit 210 and the load-side control unit 310 have functions from a first control unit to a fifth control unit described later, and detailed description of these functions will be described later.

  In the present embodiment, vehicle-side control unit 210 and load-side control unit 310 are provided as part of vehicle-side converter 200 and load-side converter 300, respectively. However, vehicle-side control unit 210 and load-side control unit 310 may be configured as a control device or the like separate from vehicle-side converter 200 and load-side converter 300. The vehicle-side control unit 210 and the load-side control unit 310 may be configured by a circuit having a microcomputer as a center or a circuit without a microcomputer or the like, and executing a software program suitable for each component It may be realized by

  The power generation facility 400 is a power generation facility provided to charge the emergency power storage unit 120. The power generation facility 400 is, for example, a power generation facility (distributed power supply) such as solar power generation installed on the roof of the station building 22, and is disposed without being connected to a commercial power system of a power company. The power generation facility 400 is not limited to solar power generation, and may be a power generation facility such as a wind power generation, a fuel cell, a gas engine, or a gas turbine, or is interconnected with a commercial power system such as a power generation facility of a power company. It may be a power generation facility.

  The storage unit 500 is a memory or the like that stores data and the like necessary for the railway power storage device 10 to perform control. Specifically, the storage unit 500 uses thresholds (a first threshold for regeneration, a second threshold for regeneration, a third threshold for regeneration, and the like) used when the vehicle-side control unit 210 and the load-side control unit 310 to be described below perform control. A first emergency threshold, a second emergency threshold, a third travel threshold, and the like are stored.

[3 Description of processing performed by the railway power storage device 10]
Next, processing performed by the railway power storage device 10, that is, control processing performed by the vehicle control unit 210 and the load control unit 310 will be described in detail with reference to FIGS.

[3.1 Description of Process for Controlling Regeneration Storage Unit 110]
A process in which vehicle-side control unit 210 and load-side control unit 310 control regenerative electric storage unit 110 will be described in detail. FIG. 3 is a flowchart showing an example of processing in which vehicle-side control unit 210 and load-side control unit 310 control regeneration electric storage unit 110 according to the present embodiment.

  As shown in FIG. 3, the vehicle-side control unit 210 charges and discharges the regenerative power storage unit 110 (S 102). When the regenerative power from the vehicle 21 is generated, the vehicle-side control unit 210 supplies the regenerative power to the regenerative power storage unit 110 via the first wiring 111, and charges the regenerative power storage unit 110. Vehicle-side control unit 210 may supply, to regenerative power storage unit 110, the surplus of the regenerative power generated from vehicle 21 after being used by another vehicle 21 or the like, or the generated regenerative power. All of these may be supplied to the regenerative power storage unit 110. When electric power is required for the vehicle 21 to travel, the vehicle-side control unit 210 supplies the electric power from the regenerative power storage unit 110 to the vehicle 21 via the first wiring 111.

  Load-side control unit 310 determines whether the value indicating the SOC of regenerative power storage unit 110 is equal to or greater than the first threshold for regeneration (S104). The first threshold value for regeneration is an upper limit value in a range that does not disturb the traveling of the vehicle 21 as much as possible, and is determined in advance and stored in the storage unit 500. Specifically, the first threshold value for regeneration is, for example, a value indicating that the SOC is 85%. The load-side control unit 310 reads the first threshold value for regeneration from the storage unit 500 and makes the above determination. The value indicating the SOC of the storage battery unit 110 for regeneration is not limited to the value of the SOC itself of the storage battery unit 110 for regeneration, but uses various values indicating the SOC, such as the voltage value or current value of the storage battery unit 110 for regeneration. be able to. The same applies to the following.

  When load side control unit 310 determines that the value indicating the SOC of regenerative power storage unit 110 is equal to or greater than the first threshold for regeneration (Yes in S104), the regenerative power supplied from first wire 111 is directly transmitted The load 23 is supplied (without passing through the regenerative power storage unit 110) (S106). The process performed by the load-side control unit 310 is an example of the process performed by the first control unit. The first control unit not only supplies regenerative power directly to the load 23 according to the state of the regenerative power storage unit 110 but also when the value indicating the SOC of the regenerative power storage unit 110 is equal to or greater than the first threshold for regeneration. You may The state of the regenerative power storage unit 110 includes the charge state (or discharge state) of the regenerative power storage unit 110, presence or absence of abnormality (degree of abnormality), deterioration state (degree of deterioration), and the like. For example, even if the first control unit is abnormal when the regenerative power storage unit 110 or the monitoring device thereof is abnormal, the deterioration of the regenerative power storage unit 110 is progressing, even when the temperature of the regenerative power storage unit 110 is high, etc. The regenerative power may be supplied directly to the load 23.

  When it is determined that the SOC of regenerative power storage unit 110 is, for example, 85% or more, load-side control unit 310 loads the regenerative electric power from vehicle 21 via load 111 via first wire 111 and second wire 112. Supply directly to Since the first wiring 111 and the second wiring 112 are connected, when the SOC of the storage battery unit 110 for regeneration is a high value such as 85% or more, the regenerative power is not charged in the storage battery unit 110 for regeneration. Flow toward the load side converter 300. Therefore, the load-side control unit 310 supplies the flowing regenerative power to the load 23 via the power line 12. The value of the first regeneration threshold is not particularly limited, and may be, for example, a value indicating that the SOC is 70%.

  When load-side control unit 310 determines that the value indicating the SOC of regeneration storage unit 110 is smaller than the first threshold for regeneration (No in S104), the value indicating the SOC of regeneration storage unit 110 is regenerated. It is judged whether it is more than the 2nd threshold for use (S108). The second threshold value for regeneration is a lower limit value in a range that does not disturb the traveling of the vehicle 21 as much as possible, and is determined in advance and stored in the storage unit 500. Specifically, the second threshold for regeneration is a value smaller than the first threshold for regeneration, and is, for example, a value indicating that the SOC is 15%. The load-side control unit 310 reads the second threshold for regeneration from the storage unit 500 and makes the above determination.

  Load-side control unit 310 supplies power from regenerative power storage unit 110 to load 23 when it is determined that the value indicating the SOC of regenerative power storage unit 110 is greater than or equal to the second threshold for regeneration (Yes in S108). (S110). The process performed by the load-side control unit 310 is an example of the process performed by the second control unit.

  When it is determined that the SOC of the regenerative power storage unit 110 is, for example, 15% or more, the load-side control unit 310 supplies the power from the regenerative power storage unit 110 to the load 23 via the second wiring 112. . As described above, if the SOC of the regenerative power storage unit 110 is about 15% or more, the load-side control unit 310 loads the power from the regenerative power storage unit 110 to the load 23 because the traveling of the vehicle 21 is not hindered. Can be supplied. For example, when it is determined that the load-side control unit 310 is nighttime, the power from the regenerative power storage unit 110 is supplied in a necessary time zone, such as supplying the power from the regenerative power storage unit 110 to the load 23 such as lighting. May be controlled to be supplied to the load 23. The value of the second regeneration threshold value is not particularly limited, and may be, for example, a value indicating that the SOC is 30%.

  When load side control unit 310 determines that the value indicating the SOC of regeneration power storage unit 110 is smaller than the second regeneration threshold (No in S108), it determines whether or not a predetermined condition is satisfied (S108). S112). When it is determined that the predetermined condition is satisfied (Yes in S112), the load-side control unit 310 supplies the power from the regenerative power storage unit 110 to the load 23 (S110). The processing performed by the load-side control unit 310 is also an example of processing performed by the second control unit. The second control unit responds not only to the case where the value representing the SOC of the regenerative power storage unit 110 is equal to or greater than the second threshold for regeneration, or to the case where it is smaller than the second threshold for regeneration. The power from the regenerative power storage unit 110 may be supplied to the load 23. The state of the regenerative power storage unit 110 is as described above.

  The predetermined condition is, for example, an emergency such as a disaster. For example, by receiving an emergency signal from the substation 30 or the operation control center 50 or the like, the load-side control unit 310 determines that it is an emergency and determines that the predetermined condition is satisfied. For example, when the emergency signal is received, load-side control unit 310 is also configured to have the value indicating the SOC of regenerative power storage unit 110 smaller than the second threshold for regeneration (for example, the SOC is smaller than 15%). The electric power from the regenerative power storage unit 110 is controlled to be able to be supplied to the load 23. Thus, for example, power can be supplied to the lighting in the station yard, the elevator, the medical office, the ticket gate, the ticket vending machine, the operation control center 50 and the like, and safety can be achieved.

  When the load-side control unit 310 determines that the predetermined condition is not satisfied (No in S112), the process ends. This is the end of the description of the process in which the vehicle-side control unit 210 and the load-side control unit 310 control the regenerative power storage unit 110.

[3.2 Description of Process for Controlling Emergency Power Storage Unit 120]
The process in which load side control unit 310 controls emergency power storage unit 120 will be described in detail. FIG. 4 is a flowchart showing an example of a process in which load side control unit 310 according to the present embodiment controls emergency power storage unit 120.

  As shown in FIG. 4, the load-side control unit 310 supplies the power from the power generation facility 400 to the emergency power storage unit 120, and charges the emergency power storage unit 120 (S202). Load-side control unit 310 determines whether or not the value indicating the SOC of emergency power storage unit 120 is equal to or higher than the second emergency threshold (S204). The second emergency threshold is a predetermined value which is determined in advance and stored in storage unit 500, and indicates, for example, that SOC is approximately 90% to 100% (full charge state). The load-side control unit 310 reads the second emergency threshold value from the storage unit 500 and makes the above determination.

  Load-side control unit 310 supplies power from power generation facility 400 to load 23 when it is determined that the value indicating the SOC of emergency storage unit 120 is equal to or higher than the second emergency threshold (Yes in S204) ( S206). The process performed by the load-side control unit 310 is an example of the process performed by the fourth control unit. The fourth control unit applies the power from the power generation facility 400 to the load 23 according to the state of the emergency power storage unit 120 as well as when the value indicating the SOC of the emergency power storage unit 120 is greater than or equal to the emergency second threshold. It may be supplied. The state of the emergency power storage unit 120 includes the charge state (or discharge state) of the emergency power storage unit 120, the presence or absence of abnormality (degree of abnormality), the deterioration state (degree of deterioration), and the like. For example, when the emergency power storage unit 120 or its monitoring device is abnormal, the fourth control unit is in a state where deterioration of the emergency power storage unit 120 is progressing, even when the temperature of the emergency power storage unit 120 is high, etc. The power from the power generation facility 400 may be supplied directly to the load 23.

  When it is determined that the emergency power storage unit 120 is in a fully charged state, for example, the load-side control unit 310 supplies the power from the power generation facility 400 to the load 23 via the power line 12. As described above, when the emergency power storage unit 120 is fully charged, the power from the power generation facility 400 can not be charged to the emergency power storage unit 120. Therefore, the load side control unit 310 loads the power from the power generation facility 400. Supply to 23 The value of the second emergency threshold value is not particularly limited, and may be, for example, a value indicating that the SOC is 85%.

  When load-side control unit 310 determines that the value indicating the SOC of emergency storage unit 120 is smaller than the second emergency threshold (No in S204), the value indicating the SOC of emergency storage unit 120 is very high. It is judged whether it is more than the first threshold (S208). The first emergency threshold is, for example, a value that does not disturb the traveling of the vehicle 21 as much as possible, such as the vehicle 21 can be moved to the station building 22 even when the substation 30 loses power. It is stored in 500. Specifically, the first emergency threshold is a value smaller than the second emergency threshold, for example, a value indicating that the SOC is 70%. The load-side control unit 310 reads the first emergency threshold value from the storage unit 500 and makes the above determination.

  Load-side control unit 310 supplies power from emergency storage unit 120 to load 23 when it is determined that the value indicating the SOC of emergency storage unit 120 is equal to or greater than the first emergency threshold (Yes in S208). (S210). The process performed by the load-side control unit 310 is also an example of the process performed by the fourth control unit. The fourth control unit loads the power from the emergency storage unit 120 according to the state of the emergency storage unit 120 as well as when the value indicating the SOC of the emergency storage unit 120 is equal to or greater than the emergency first threshold. It may be supplied to S.23. The state of the emergency power storage unit 120 is as described above.

  When it is determined that the SOC of emergency storage unit 120 is, for example, 70% or more, load-side control unit 310 supplies power from emergency storage unit 120 to load 23 through fourth wiring 122. . As described above, if the SOC of the emergency storage unit 120 is about 70% or more, the load-side control unit 310 loads the power from the emergency storage unit 120 to the load 23 because the traveling of the vehicle 21 is not hindered. Can be supplied. For example, when it is determined that the load-side control unit 310 is nighttime, the power from the emergency storage unit 120 is supplied during a necessary time zone, such as supplying the power from the emergency storage unit 120 to the load 23 such as lighting. May be controlled to be supplied to the load 23. The value of the first emergency threshold is not particularly limited, and may be, for example, a value indicating that the SOC is 80%.

  When it is determined that the value indicating the SOC of emergency power storage unit 120 is smaller than the emergency first threshold (No in S208), load-side control unit 310 ends the process. This is the end of the description of the process in which the load-side control unit 310 controls the emergency power storage unit 120.

[3.3 Description of Peak Cut Processing Performed by Vehicle-side Control Unit 210 and Load-side Control Unit 310]
The peak cut processing performed by the vehicle-side control unit 210 and the load-side control unit 310 will be described in detail. FIG. 5 is a flowchart showing an example of peak cut processing performed by the vehicle-side control unit 210 and the load-side control unit 310 according to the present embodiment.

  As shown in FIG. 5, the vehicle-side control unit 210 and the load-side control unit 310 indicate that the power usage of the power using facility 20 including at least one of the vehicle 21 and the load 23 has become equal to or higher than a predetermined threshold ( Hereinafter, it is determined whether or not the signal S) is received (S302). In the present embodiment, since the power using facility 20 includes both the vehicle 21 and the load 23, the vehicle side control unit 210 and the load side controlling unit 310 can use the power using facility including both the vehicle 21 and the load 23. It is determined whether or not the signal S indicating that the power consumption of 20 has reached the predetermined threshold or more is received. The signal S can be reworded as being a signal indicating that the power usage of the substation 30 has become equal to or greater than a predetermined threshold. The signal S may be wired or wireless.

  In the present embodiment, vehicle-side control unit 210 and load-side control unit 310 receive signal S from at least one of substation 30 supplying power to power use facility 20 and operation command center 50 of vehicle 21. Do.

  The signal S is, for example, when the power used by the power using facility 20 increases during a commute rush hour, and the power received from the power company exceeds a predetermined value, or when the vehicle 21 starts to overlap, the power using facility 20 The electric power consumption of the signal is increased when the voltage of the electric wire 24 drops and falls below a predetermined value. For example, the above-mentioned predetermined threshold is a value that does not exceed the contract power with the power company, and the signal S is a signal emitted when it is likely to exceed the contract power with the power company at the peak of power consumption. . In such a case, the substation 30 or the operation control center 50 generates the signal S and transmits it to the railway power storage device 10, and the vehicle-side control unit 210 and the load-side control unit 310 transmit the transmitted signal S. To receive. Note that the vehicle-side control unit 210 and the load-side control unit 310 may receive the signal S from the other outside, or may obtain the signal S by internal processing of itself. The vehicle-side control unit 210 and the load-side control unit 310 may independently determine based on a specific day, time, day of the week, or the like to generate the signal S by its own internal processing and perform processing.

  When vehicle-side control unit 210 and load-side control unit 310 determine that signal S has been received (Yes in S302), according to signal S, the power from power storage unit 100 is controlled by at least one of vehicle 21 and load 23. (S304). Vehicle-side control unit 210 and load-side control unit 310 supply electric power from power storage unit 100 to at least one of vehicle 21 and load 23 to perform peak cut of power consumption.

  Specifically, vehicle-side control unit 210 and load-side control unit 310 transmit the power from emergency storage unit 120 according to signal S1 indicating that the power used by power-using facility 20 has become equal to or higher than the third travel threshold. Is supplied to at least one of the vehicle 21 and the load 23. The processing performed by the vehicle-side control unit 210 and the load-side control unit 310 in this case is an example of the processing performed by the fifth control unit. The fifth control unit may supply power from the emergency power storage unit 120 to at least one of the vehicle 21 and the load 23 not only according to the signal S1 but also according to the power used by the power using facility 20. Good.

  Vehicle-side control unit 210 and load-side control unit 310 transmit the power from regenerative power storage unit 110 to vehicle 21 according to signal S2 indicating that the power used by power-using facility 20 has become equal to or higher than the third threshold for regeneration. Supply to at least one of the loads 23. The processing performed by the vehicle-side control unit 210 and the load-side control unit 310 in this case is an example of the processing performed by the third control unit. The third control unit not only supplies power according to the power consumption of the power using facility 20 but also supplies power from the regenerative power storage unit 110 to at least one of the vehicle 21 and the load 23, not only in accordance with the signal S2. Good.

  The third traveling threshold and the third regeneration threshold may be the same value or different values, but when the third traveling threshold and the third regeneration threshold are the same value, the signal S1 and the signal S2 may be used. And will be the same signal. The peak cut processing performed by the vehicle-side control unit 210 and the load-side control unit 310 will be described in detail below.

[3.4 Description of Peak Cut Processing by Emergency Power Storage Unit 120]
Among the peak cut processing (S304 in FIG. 5) performed by the vehicle-side control unit 210 and the load-side control unit 310, the peak cut processing by the emergency power storage unit 120 (the processing performed by the above-mentioned fifth control unit) will be described in detail. Do. FIG. 6 is a flowchart showing an example of peak cut processing by emergency power storage unit 120 performed by vehicle-side control unit 210 and load-side control unit 310 according to the present embodiment. Hereinafter, for convenience of description, in the peak cut processing, the vehicle-side control unit 210 and the load-side control unit 310 will be collectively referred to as a fifth control unit.

  As shown in FIG. 6, the fifth control unit determines whether the value indicating the SOC of the emergency power storage unit 120 is equal to or higher than the emergency second threshold (S402). The process performed by the fifth control unit is the same as the process described in S204 of FIG. 4, and thus detailed description will be omitted.

  When the fifth control unit determines that the value indicating the SOC of emergency power storage unit 120 is equal to or higher than the second emergency threshold (Yes in S402), power from power generation facility 400 is transmitted to vehicle 21 according to signal S1. And at least one of the loads 23 (S404).

  The fifth control unit supplies the power from the power generation facility 400 to at least one of the vehicle 21 and the load 23 when it is determined that the emergency power storage unit 120 is, for example, in a fully charged state. As described above, when the emergency power storage unit 120 is fully charged, the power from the power generation facility 400 can not be charged to the emergency power storage unit 120. Therefore, the fifth control unit It is supplied to the vehicle 21 through the fourth wiring 122 and the third wiring 121, or is supplied to the load 23 through the power line 12. The fifth control unit receives the power from the power generation facility 400 according to the state of the emergency power storage unit 120 as well as when the value indicating the SOC of the emergency power storage unit 120 is equal to or greater than the emergency second threshold. And at least one of the loads 23 may be supplied. The state of the emergency power storage unit 120 is as described above.

  If the fifth control unit determines that the value indicating the SOC of the emergency power storage unit 120 is smaller than the emergency second threshold (No in S402), the value indicating the SOC of the emergency power storage unit 120 is for emergency use. It is judged whether it is more than a first threshold (S406). The process performed by the fifth control unit is the same as the process described in S208 of FIG. 4, and thus detailed description will be omitted.

  When the fifth control unit determines that the value indicating the SOC of emergency storage unit 120 is equal to or higher than the emergency first threshold (Yes in S406), the power from emergency storage unit 120 is set according to signal S1, At least one of the vehicle 21 and the load 23 is supplied (S408).

  The fifth control unit supplies the power from the emergency power storage unit 120 to at least one of the vehicle 21 and the load 23 when determining that the SOC of the emergency power storage unit 120 is, for example, 70% or more. As described above, if the SOC of the emergency storage unit 120 is about 70% or more, the fifth control unit does not disturb the traveling of the vehicle 21. It can be supplied to the vehicle 21 through the wiring 121, or can be supplied to the load 23 through the fourth wiring 122. The fifth control unit not only receives power from the emergency storage unit 120 according to the state of the emergency storage unit 120 but also when the value indicating the SOC of the emergency storage unit 120 is equal to or greater than the emergency first threshold, It may be supplied to at least one of the vehicle 21 and the load 23. The state of the emergency power storage unit 120 is as described above.

  If the fifth control unit determines that the value indicating the SOC of the emergency power storage unit 120 is smaller than the emergency first threshold (No in S406), the process ends. With the above, the description of the peak cut processing by the emergency power storage unit 120 among the peak cut processing (S304 in FIG. 5) performed by the vehicle side control unit 210 and the load side control unit 310 is ended.

[3.5 Description of Peak Cut Processing by Regeneration Power Storage Unit 110]
Among the peak cut processing (S304 in FIG. 5) performed by the vehicle-side control unit 210 and the load-side control unit 310, the peak cut processing by the regenerative power storage unit 110 (the processing performed by the third control unit described above) will be described in detail. Do. FIG. 7 is a flow chart showing an example of peak cut processing by regeneration power storage unit 110 performed by vehicle-side control unit 210 and load-side control unit 310 according to the present embodiment. Hereinafter, for convenience of explanation, in the peak cut processing, the vehicle-side control unit 210 and the load-side control unit 310 will be collectively referred to as a third control unit.

  As shown in FIG. 7, the third control unit determines whether or not the value indicating the SOC of the regenerative power storage unit 110 is equal to or greater than the first threshold for regeneration (S502). The process performed by the third control unit is the same as the process described in S104 of FIG. 3, and thus the detailed description is omitted.

  When the third control unit determines that the value indicating the SOC of the regenerative power storage unit 110 is equal to or higher than the first threshold value for regeneration (Yes in S502), the regenerative power from the vehicle 21 is directly transmitted according to the signal S2. The energy is supplied to the load 23 without passing through the regenerative power storage unit 110 (S504). The process performed by the third control unit is the same as the process described in S106 of FIG. 3, and thus detailed description will be omitted. The third control unit directly loads the power from the vehicle 21 according to the state of the regenerative power storage unit 110 as well as when the value indicating the SOC of the regenerative power storage unit 110 is equal to or greater than the first threshold for regeneration. It may be supplied to The state of the regenerative power storage unit 110 is as described above.

  When the third control unit determines that the value indicating the SOC of the regenerative power storage unit 110 is smaller than the first threshold for regeneration (No in S502), the value indicating the SOC of the regenerative power storage unit 110 is for regeneration. It is judged whether it is more than a 2nd threshold (S506). The process performed by the third control unit is the same as the process described in S108 of FIG. 3, and thus the detailed description is omitted.

  When the third control unit determines that the value indicating the SOC of the regenerative power storage unit 110 is greater than or equal to the second threshold for regeneration (Yes in S506), the power from the regenerative power storage unit 110 is generated according to the signal S2. At least one of the vehicle 21 and the load 23 is supplied (S508).

  The third control unit supplies the power from the regenerative power storage unit 110 to at least one of the vehicle 21 and the load 23 when determining that the SOC of the regenerative power storage unit 110 is, for example, 15% or more. If the SOC of the storage battery unit 110 for regeneration is about 15% or more, the third control unit does not disturb the traveling of the vehicle 21, so the third control unit transmits the power from the storage battery unit 110 for regeneration via the first wiring 111. It can be supplied to the vehicle 21 or can be supplied to the load 23 via the second wiring 112.

  If the third control unit determines that the value indicating the SOC of the regeneration power storage unit 110 is smaller than the second regeneration threshold (No in S506), the third control unit determines whether a predetermined condition is satisfied (S510). ). The process performed by the third control unit is the same as the process described in S112 of FIG. 3, and thus the detailed description is omitted. When it is determined that the predetermined condition is satisfied (Yes in S510), the third control unit supplies the power from the regenerative power storage unit 110 to at least one of the vehicle 21 and the load 23 (S508). The third control unit is adapted not only to the case where the value representing the SOC of the regeneration storage unit 110 is equal to or greater than the regeneration second threshold, or to the case where the value is smaller than the regeneration second threshold, according to the state of the regeneration storage unit 110. Alternatively, the power from the regenerative power storage unit 110 may be supplied to at least one of the vehicle 21 and the load 23. The state of the regenerative power storage unit 110 is as described above.

  The predetermined condition is, for example, an emergency such as when the peak of the power consumption is large. Even in the emergency, the third control unit is configured to receive the SOC from the regenerative storage unit 110 even when the value indicating the SOC of the regenerative storage unit 110 is smaller than the second regeneration threshold (for example, the SOC is smaller than 15%). The power is controlled to be able to be supplied to at least one of the vehicle 21 and the load 23.

  When the third control unit determines that the predetermined condition is not satisfied (No in S510), the process ends. With the above, the description of the peak cut processing by the power storage unit 110 for regeneration among the peak cut processing (S304 in FIG. 5) performed by the vehicle side control unit 210 and the load side control unit 310 is ended.

[4 Description of effect]
As described above, according to the railway power storage device 10 according to the embodiment of the present invention, the first wiring 111 electrically connected to the vehicle 21 is connected to the regenerative power storage unit 110, and the regenerative power storage unit A second wire 112 connected to 110 is electrically connected to the load 23. Since the electric storage unit 110 for regeneration, which charges regenerative electric power from the vehicle 21 by the first wiring 111, is electrically connected to the load 23 by the second wiring 112, power is supplied to the load 23 through the second wiring 112. Can be supplied. For example, when the power is not supplied to the load 23, the regenerative electric power from the vehicle 21 can be charged to the electric storage unit 110 for regeneration by the first wiring 111. When the regenerative power storage unit 110 is fully charged, power can be supplied to the load 23 via the second wiring 112. This can increase the choice of power supply. It is also possible to reduce the risk that regenerative braking can not be performed if regenerative power can not be received when power remains. As described above, since the regenerative power storage unit 110 can be used to supply power to the load 23, the power storage unit 100 can be effectively used.

  Since the second wire 112 is connected to the first wire 111, the regenerative power from the vehicle 21 can be directly supplied to the load 23. For example, when there is no need to charge the regenerative power storage unit 110 or there is a high need to supply power to the load 23, the regenerative power from the vehicle 21 is not charged to the regenerative power storage unit 110, The load 23 can be supplied directly. If regenerative power is directly supplied to the load 23 without charging the regenerative storage unit 110, loss and heat generation due to internal resistance of the regenerative storage unit 110, restriction due to charge and discharge capabilities, deterioration of the regenerative storage unit 110, and the like are suppressed. can do. Power can be supplied to the load 23 in accordance with the necessity of charging the regenerative power storage unit 110 or the need to supply the power to the load 23. Thus, power can be efficiently supplied to load 23 while effectively utilizing power storage unit 100.

  The railway power storage device 10 directly supplies the regenerative power from the vehicle 21 to the load 23 according to the state of the regenerative power storage unit 110. For example, when it is not necessary to charge the storage battery unit 110 for regeneration, when the storage battery unit 110 for regeneration, its monitoring device and the like are abnormal, and when the deterioration of the storage battery unit 110 for regeneration progresses, the temperature of the storage battery unit 110 for regeneration Can be supplied directly to the load 23 without charging the regenerative power storage unit 110. Thereby, effective utilization of regenerative power can be achieved.

  The railway power storage device 10 directly supplies the regenerative power from the vehicle 21 to the load 23 when the value indicating the SOC of the regenerative power storage unit 110 is greater than or equal to the first threshold for regeneration. For example, when the SOC of the regenerative power storage unit 110 indicates a relatively high value, it is not necessary to charge the regenerative power storage unit 110 or when the regenerative power storage unit 110 can not be charged in a fully charged state. To the load 23 without discarding the regenerative power from the vehicle 21. Thereby, effective utilization of regenerative power can be achieved.

  The railway power storage device 10 supplies the power from the regenerative power storage unit 110 to the load 23 in accordance with the state of the regenerative power storage unit 110. For example, the power from the regenerative power storage unit 110 can be supplied to the load 23 when the regenerative power storage unit 110 is sufficiently charged or in an emergency. Even when the regenerative power storage unit 110 is not sufficiently charged, the power from the regenerative power storage unit 110 can be supplied to an important load that is related to air conditioning and heating and life. As described above, since the regenerative power storage unit 110 can be used to supply power to the load 23, the power storage unit 100 can be effectively used.

  The railway power storage device 10 supplies the power from the regeneration power storage unit 110 to the load 23 when the value indicating the SOC of the regeneration power storage unit 110 is equal to or greater than the regeneration second threshold. For example, at nighttime when traveling of vehicle 21 is not performed, if the SOC of regenerative power storage unit 110 indicates a value necessary for traveling of vehicle 21 the next day or more, among the power from regenerative storage unit 110 The remaining power equal to or higher than the required power (the second threshold for regeneration) can be supplied to the load 23 such as lighting. As described above, at night or the like, since the regenerative power storage unit 110 can be used to supply power to the load 23, the power storage unit 100 can be effectively used.

  Railway power storage device 10 can control power supply from regenerative power storage unit 110 to load 23 even when the value indicating the SOC of regenerative power storage unit 110 is smaller than the second threshold for regeneration. It has a function. That is, since the emergency storage unit 120 can supply power to the vehicle 21 even if the SOC of the regeneration storage unit 110 is small (for example, 0), the SOC of the regeneration storage unit 110 can be reduced. it can. For example, when it becomes necessary to supply power to the load 23 at the time of disaster etc., the power from the power storage 110 for regeneration is required at the time of disaster etc. until the SOC of the electricity storage 110 for regeneration becomes zero. Can be supplied to the load 23 for various devices. As described above, even in the event of a disaster or the like, the regenerative power storage unit 110 can be used to supply power to the load 23, so that the power storage unit 100 can be effectively used.

  The railway power storage device 10 supplies the power from the regenerative power storage unit 110 to at least one of the vehicle 21 and the load 23 according to the power used by the power using facility 20. Thereby, since power storage unit 110 for regeneration can be utilized for peak cutting of power consumption and the like, power storage unit 100 can be effectively used.

  Regeneration storage unit 110 has a higher high rate characteristic than emergency storage unit 120. For this reason, when instantaneous large power is required, the load on the instantaneous large power can be reduced by discharging the electric storage unit 110 for regeneration. As described above, since the instantaneous power load of the substation 30 or the like can be reduced by utilizing the power storage unit 110 for regeneration, the power storage unit 100 can be effectively used.

  The railway power storage device 10 transmits the power from the regenerative power storage unit 110 to at least one of the vehicle 21 and the load 23 in accordance with a signal indicating that the power usage of the power using facility 20 has become equal to or higher than the third threshold for regeneration. Supply. Thus, instantaneous power consumption can be achieved by supplying power from the regenerative power storage unit 110 to at least one of the vehicle 21 and the load 23 at the peak of the used power due to, for example, commuting rush hours or momentary power fluctuations etc. Peak cut can be achieved. As a result, load leveling of electric power can be achieved by utilizing the power storage unit 110 for regeneration and contribution can be made to power saving measures, so that the power storage unit 100 can be effectively used. Further, since the regenerative power storage unit 110 can be used as a peak-cut power supply for reducing the power received from the power company, the contract power of the power company can be reduced to reduce the electricity bill.

  The railway power storage device 10 supplies the power from the emergency power storage unit 120 to the load 23 in accordance with the state of the emergency power storage unit 120. For example, when the emergency power storage unit 120 is sufficiently charged or in an emergency, power from the emergency power storage unit 120 can be supplied to the load 23. Even when the emergency power storage unit 120 is not sufficiently charged, the power from the emergency power storage unit 120 can be supplied to the important load 23 that is related to heating and cooling and life. As described above, since the emergency storage unit 120 can be used to supply power to the load 23, the storage unit 100 can be effectively used.

  The railway power storage device 10 supplies the power from the emergency power storage unit 120 to the load 23 when the value indicating the SOC of the emergency power storage unit 120 is equal to or greater than the emergency first threshold. For example, if the SOC of the emergency power storage unit 120 indicates a value necessary for traveling of the vehicle 21 the next day or more at night or during a disaster, etc., the required power of the power from the emergency power storage unit 120 The remaining power equal to or greater than the first threshold value) can be supplied to the load 23 such as lighting. As described above, since the emergency storage unit 120 can be used to supply power to the load 23 at night or the like, the storage unit 100 can be effectively used.

  The railway power storage device 10 supplies power from the power generation facility 400 to the load 23 in accordance with the state of the emergency power storage unit 120. For example, if it is not necessary to charge emergency storage unit 120, if emergency storage unit 120 or its monitoring device is abnormal, if emergency storage unit 120 is deteriorating, the temperature of emergency storage unit 120 Can be directly supplied to the load 23 without charging the emergency power storage unit 120. This makes it possible to effectively use the generated power.

  The railway power storage device 10 supplies the power from the power generation facility 400 to the load 23 when the value indicating the SOC of the emergency power storage unit 120 is greater than or equal to the emergency second threshold. For example, when the SOC of the emergency storage unit 120 indicates a relatively high value, it is not necessary to charge the emergency storage unit 120, or the emergency storage unit 120 can not be charged in a fully charged state. To the load 23 without discarding the power generated from the power generation facility 400. This makes it possible to effectively use the generated power.

  The railway power storage device 10 supplies the power from the emergency power storage unit 120 to at least one of the vehicle 21 and the load 23 according to the power used by the power using facility 20. As a result, since emergency storage unit 120 can be used for peak cutting of power consumption and the like, storage unit 100 can be used effectively.

  Emergency power storage unit 120 has a higher capacity than regenerative power storage unit 110. Therefore, when power supply for a long time is required, discharging from the emergency power storage unit 120 can reduce the burden of power. As described above, since the burden of power consumption of the substation 30 or the like can be reduced by utilizing the emergency storage unit 120, the storage unit 100 can be effectively used.

  The railway power storage device 10 transmits the power from the emergency storage unit 120 to at least one of the vehicle 21 and the load 23 in accordance with a signal indicating that the power used by the power using facility 20 has become equal to or higher than the third travel threshold. Supply. As described above, for example, when the peak of the used power is long during commuting rush hours, the power consumption from the emergency storage unit 120 is supplied to at least one of the vehicle 21 and the load 23 to cut the power consumption peak for a long time. Can be As a result, load leveling of electric power can be achieved by utilizing the emergency power storage unit 120 and contribution can be made to power saving measures, so that the power storage unit 100 can be effectively used. Since the emergency power storage unit 120 can be used as a power supply for peak cut to reduce the power received from the power company, the contracted power of the power company can be reduced to reduce the electricity bill.

[5 Description of Modifications]
Although the railway power storage device 10 according to the embodiment of the present invention has been described, the present invention is not limited to this embodiment. That is, it should be considered that the embodiment disclosed this time is illustrative in all points and not restrictive. The scope of the present invention is indicated not by the above description but by the claims, and is intended to include all the modifications within the meaning and scope equivalent to the claims.

  In the above embodiment, vehicle-side control unit 210 and load-side control unit 310 (for example, the second control unit) are configured to transmit electric power from regenerative power storage unit 110 and emergency power storage unit 120 to vehicle 21 and Control may be made to supply the load 23. The vehicle-side control unit 210 and the load-side control unit 310 may perform the above control at the time of a power failure at any timing described in the above embodiment. As a result, the railway power storage device 10 supplies power to the vehicle 21 and the load 23 from both the regenerative power storage unit 110 and the emergency power storage unit 120 at the time of a power failure, thereby preventing power shortage at the time of a power failure. The storage unit 100 can be effectively used.

  In the above embodiment, vehicle-side control unit 210 and load-side control unit 310 (for example, the second control unit) transmit power from regenerative power storage unit 110 and emergency power storage unit 120 to vehicle 21 during a power failure. After supplying, the load 23 may be controlled to be supplied. The vehicle-side control unit 210 and the load-side control unit 310 may perform the above control at the time of a power failure at any timing described in the above embodiment. As a result, at the time of a power failure, the railway power storage device 10 can first supply the power to the load 23 after moving the vehicle 21 to the station building 22, and can effectively use the power storage unit 100.

  In the above embodiment, vehicle-side control unit 210 and load-side control unit 310 (for example, the second control unit) perform control to supply power to emergency storage unit 120 at the time of power recovery after a power failure. You may The vehicle-side control unit 210 and the load-side control unit 310 may perform the above control at the time of power recovery at any timing described in the above embodiment. As a result, when the railway power storage device 10 causes the emergency power storage unit 120 to be able to be used when the vehicle 21 is driven after power recovery, the emergency power storage unit can be used immediately, for example, when a power failure occurs again. 120 can be utilized, and storage device 100 can be effectively utilized.

  In the above embodiment, vehicle-side control unit 210 and load-side control unit 310 (for example, the second control unit and the third control unit) are configured to use regenerative power storage unit 110 of power storage unit 100 according to the operation status of vehicle 21. Alternatively, charge and discharge of at least one of the emergency power storage unit 120 may be controlled. The vehicle-side control unit 210 and the load-side control unit 310 may perform the above-described control at any timing described in the above embodiment. Thus, railway power storage device 10 controls charging / discharging of power storage unit 100 in accordance with the operation status such as the number of vehicles 21 operated, so that power storage unit 100 needs more power than necessary according to the operation status. Since the power can be supplied to the vehicle 21 or the load 23 and used for peak power consumption and the like, the power storage unit 100 can be effectively used.

  In the above embodiment, regenerative power storage unit 110 has characteristics and high rate characteristics more suitable for repeated charge and discharge than emergency power storage unit 120, and emergency power storage unit 120 has a higher capacity than regenerative power storage unit 110. It has a characteristic. However, as the storage battery unit 110 for regeneration and the storage battery unit 120 for emergency, those having various characteristics not satisfying the above can be selected.

  In the above embodiment, power storage unit 100 includes the two power storage units including regenerative power storage unit 110 and emergency power storage unit 120, but may include three or more power storage units.

  A form constructed by combining the above embodiment and the above modification arbitrarily is also included in the scope of the present invention.

  The present invention can not only be realized as such a railway power storage device 10, but also includes at least one of the railway power storage device 10, the vehicle 21, the station building 22, the load 23, the substation 30, and the operation control center 50. It can also be realized as a railway power storage system comprising

  The present invention can be applied to a railway power storage device and the like that can achieve effective use of a power storage unit.

DESCRIPTION OF SYMBOLS 10 Electric power storage apparatus for railroads 11, 12, 31, 32 Power line 20 Electric power equipment 21 Vehicle 22 Station building 23 Load 24 Train line 30 Substation 40 Power station 50 Operation control center 100 Electric storage part 110 Regeneration electric storage part 111 First wiring 112 Second wiring 120 Emergency storage unit 121 Third wiring 122 Fourth wiring 200 Vehicle side converter 210 Vehicle side control unit 300 Load side converter 310 Load side control unit 400 Power generation facility 500 Storage unit

Claims (21)

A first wire electrically connected to the railway vehicle;
A regenerative power storage unit connected to the first wire for charging regenerative power from the vehicle;
And a second wire connected to the regenerative power storage unit,
The said 2nd wiring is an electric power storage apparatus for railways electrically connected with electric power loads other than the said vehicle. The railway power storage device according to claim 1, wherein the second wiring is connected to the first wiring. The railway power storage device according to claim 2, further comprising: a first control unit that directly supplies, to the power load, the regenerative power supplied from the first wiring according to the state of the regenerative power storage unit. The first control unit is configured to generate regenerative electric power supplied from the first wiring when the value indicating the SOC (State Of Charge) of the regenerative power storage unit is equal to or greater than the first threshold for regeneration. The railway power storage device according to claim 3, wherein the power load is supplied to the power load without passing through. The electric power for railways according to any one of claims 1 to 4, further comprising a second control unit for supplying the electric power load with the electric power from the electric storage unit for regeneration according to the state of the electric storage unit for regeneration. Storage device. The railway according to claim 5, wherein the second control unit supplies power from the regenerative power storage unit to the power load when a value indicating the SOC of the regenerative power storage unit is equal to or greater than a second regeneration threshold. Power storage device. And an emergency storage unit for supplying power to the vehicle.
The second control unit performs control such that power from the regenerative storage unit can be supplied to the power load even when a value indicating the SOC of the regeneration storage unit is smaller than the second regeneration threshold. The electric power storage device for railways according to claim 6. The railway power storage device according to claim 7, wherein the second control unit supplies the electric power from the regenerative power storage unit and the emergency power storage unit to the vehicle and the power load at the time of a power failure. 9. The railway system according to claim 7, wherein the second control unit supplies the electric power from the regenerative electric storage unit and the emergency electric storage unit to the vehicle and then supplies the electric load to the electric power at the time of a power failure. Power storage device. The power storage device for railway according to any one of claims 7 to 9, wherein the second control unit supplies power to the emergency power storage unit at the time of power recovery after a power failure. The electric power storage device for railways according to any one of claims 7 to 10, wherein the second control unit controls charging and discharging of the emergency power storage unit according to the operation status of the vehicle. Furthermore, a third control unit for supplying power from the regenerative power storage unit to at least one of the vehicle and the power load in accordance with the power used by the power using facility including at least one of the vehicle and the power load The railway power storage device according to any one of claims 1 to 11. An emergency storage unit for supplying power to the vehicle;
The railway power storage device according to claim 12, wherein the regenerative power storage unit has a high rate characteristic higher than that of the emergency power storage unit. The third control unit causes the power from the power storage unit for regeneration to at least one of the vehicle and the power load in accordance with a signal indicating that the power usage of the power using facility has reached a third threshold for regeneration or more. The railway power storage device according to claim 12, wherein the power storage device is provided. Furthermore, an emergency storage unit for supplying power to the vehicle;
The electric power for railways according to any one of claims 1 to 14, further comprising: a fourth control unit for supplying the electric power load with the electric power from the emergency electric storage unit according to the state of the emergency electric storage unit. Storage device. The railway according to claim 15, wherein the fourth control unit supplies power from the emergency storage unit to the power load when a value indicating the SOC of the emergency storage unit is equal to or greater than an emergency first threshold. Power storage device. And a power generation facility for charging the emergency power storage unit.
The railway power storage device according to claim 15, wherein the fourth control unit supplies power from the power generation facility to the power load in accordance with a state of the emergency power storage unit. The electric power for railways according to claim 17, wherein the fourth control unit supplies the electric power from the power generation facility to the electric power load when the value indicating the SOC of the emergency power storage unit is equal to or higher than an emergency second threshold. Storage device. Furthermore, an emergency storage unit for supplying power to the vehicle;
A fifth control unit for supplying power from the emergency storage unit to at least one of the vehicle and the power load according to the power usage of the power using facility including at least one of the vehicle and the power load; The railway power storage device according to any one of claims 1 to 18. The railway power storage device according to claim 19, wherein the emergency power storage unit has a capacity higher than that of the regeneration power storage unit. The fifth control unit causes the power from the emergency storage unit to be applied to at least one of the vehicle and the power load according to a signal indicating that the power usage of the power using facility has reached an emergency third threshold or higher. The railway power storage device according to claim 19 or 20.

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