POWER CONTROL DEVICE, POWER CONTROL SYSTEM, POWER CONTROL METHOD, AND POWER CONTROL PROGRAM

Abstract

The power control device (21) includes a data acquisition unit (22) that acquires status data from at least one of the controlled objects among the power supply system equipment, the train, and the station equipment, including equipment that supplies electricity to the train, a calculation unit (24) that calculates control parameters used to control power in at least one of the controlled objects among the power supply system equipment, the train, and the station equipment, based on the status data of the controlled object different from the controlled object, and a transmission processing unit (25) that transmits the calculated control parameters to the controlled object.

Description

[Technical field]

[0001] The present disclosure relates to a power control device, a power control system, a power control method, and a power control program that control a power grid. [Background technology]

[0002] Conventionally, various techniques have been proposed for efficient use of electric power in railway systems including trains and stations.

[0003] Patent Document 1 discloses a railway system in which regenerative power generated by the regenerative operation of a train is stored in a power storage device, and the power stored in the power storage device is used on the train or at a station. According to Patent Document 1, a power management system responsible for energy management of the railway system estimates the transition of the amount of stored power in the power storage device and the transition of the amount of discharge by the power storage device by calculating the transition of the amount of power consumed by the train and the transition of the amount of regenerative power generated by the train when the train runs according to a train schedule. The power management system controls the power storage device based on the results of estimating the transition of the amount of stored power and the transition of the amount of discharge. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-32950 A Summary of the Invention [Problem to be solved by the invention]

[0005] When a railway system is included in the scope of energy management, it is desirable to be able to use electricity appropriately throughout the entire railway system depending on the status of the equipment included in the railway system.

[0006] The present disclosure has been made in consideration of the above, and aims to provide a power control device that enables appropriate power usage according to the status of equipment included in a railway system. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the objective, the power control device of the present disclosure includes a data acquisition unit that acquires status data from at least one of the managed objects among a power supply system equipment, including equipment that supplies electricity to a train, a train, and a station facility, a calculation unit that calculates control parameters used to control power in at least one of the controlled objects among the power supply system equipment, the train, and the station facility based on the status data of the managed object that is different from the controlled object, and a transmission processing unit that transmits the calculated control parameters to the controlled object. The data acquisition unit further acquires status data of external facilities, which are facilities outside the railway system including power supply system equipment and station equipment and can use power supplied from the railway system. The calculation unit calculates control parameters to be used for controlling the controlled object based on the acquired status data of the external facilities. Effect of the Invention

[0008] The power control device according to the present disclosure has an effect of being able to use power appropriately according to the status of the equipment included in the railway system. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing an example of a target of energy management by a power control system according to a first embodiment; [Diagram 2] FIG. 1 is a diagram showing a configuration example of a power control system according to a first embodiment. [Diagram 3] 1 is a flowchart showing an example of an operation procedure of the power control system according to the first embodiment. [Figure 4] FIG. 13 is a diagram showing a configuration example of a calculation unit according to a modification of the first embodiment; [Diagram 5] FIG. 13 is a diagram showing an example of time-based control parameters held in a calculation unit according to a modification of the first embodiment; [Figure 6] FIG. 13 is a diagram showing an example of a schedule for transmitting control parameters by a transmission processing unit in a modification of the first embodiment. [Figure 7] 1 is a flowchart showing an example of an operation procedure of a power control system according to a modification of the first embodiment. [Figure 8] FIG. 1 is a diagram showing an example of a hardware configuration of a power control device according to a first embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A power control device, a power control system, a power control method, and a power control program according to embodiments will be described in detail below with reference to the accompanying drawings.

[0011] Embodiment 1 FIG. 1 is a schematic diagram showing an example of a target of energy management by a power control system according to the first embodiment. The power control system according to the first embodiment controls a power system of a railway system 1. The railway system 1 includes a train 5 that operates a railway, a power supply system facility 2 including a facility for transmitting electricity to the train 5, and a railway station 3. The power control system is responsible for energy management between the railway system 1 and an external facility 13. The external facility 13 is a facility outside the railway system 1 and is a facility that can use power supplied from the railway system 1. In the first embodiment, energy management refers to grasping the power usage status in the entire system including the railway system 1 and the external facility 13 by monitoring the power usage status in the railway system 1 and the external facility 13. In this way, the range in which the energy management by the power control system is performed includes the railway system 1 and the external facility 13.

[0012] The substation 6 is a facility that transmits electricity to the train 5. The substation 6 is supplied with AC voltage from a commercial grid. The substation 6 steps down the AC voltage and converts it to DC voltage. The substation 6 supplies the DC voltage to a feeder 7. In the first embodiment, the power supply system facility 2 is, for example, the substation 6 and the feeder 7. Note that the number of substations 6 connected to the feeder 7 is arbitrary. The commercial grid is not illustrated in FIG. 1.

[0013] A number of electric trains 5 that operate on a railway run on rails 8. Each electric train 5 is powered by being supplied with power from a feeder line 7. FIG. 1 shows one of the multiple electric trains 5 that run on the rails 8. Each electric train 5 generates regenerative power through regenerative operation. For example, when regenerative power is generated in one electric train 5, other electric trains 5 running near that electric train 5 can use the regenerative power for powering or driving vehicle equipment. Vehicle equipment is electrical equipment installed on the electric train 5, such as air conditioning equipment or lighting equipment. Regenerative power that is surplus in the power supply system equipment 2 is recovered by a power supply device 9 installed in the station 3.

[0014] The railway system 1 includes a plurality of stations 3 installed on the railway line. FIG. 1 shows one of the plurality of stations 3 installed on the railway line. A power supply unit 9, a plurality of station building facilities 10, and power transmission facilities 11 are installed in the station 3. Each of the power supply unit 9, the plurality of station building facilities 10, and the power transmission facilities 11 is facilities installed in the railway station 3. In the first embodiment, each of these facilities installed in the railway station 3 is referred to as station facilities. Note that FIG. 1 shows one of the plurality of station building facilities 10.

[0015] Each of the station facilities 10 is an electrical facility installed in a station. Examples of the station facilities 10 include air conditioning equipment, lighting equipment, automatic ticket gates, bulletin boards, signage, elevators, etc. The power supply device 9, each of the station facilities 10, and the power transmission facility 11 are connected to each other via wiring 12.

[0016] The power supply device 9 takes in regenerative power generated by the train 5 and stores the regenerative power. The power supply device 9 converts the regenerative power from DC power to AC power. The power supply device 9 supplies power to at least one of a plurality of station facilities 10 and power transmission facilities 11 under the control of a power control system. The power transmission facilities 11 transmit the power supplied by the power supply device 9 to an external facility 13. The power supply device 9 takes in regenerative power generated by the train 5 and supplies power to each of the station facilities and the external facility 13.

[0017] Note that a solar power generation device, which is a station facility, may be installed in station 3. The solar power generation device supplies power to at least one of a plurality of station building facilities 10 and power transmission facility 11 under the control of a power control system. The power transmission facility 11 sends the power supplied by the solar power generation device to an external facility 13. The power transmission facility 11 may supply power to a power supply device 9. In this case, the power supply device 9 stores the power supplied by the solar power generation device.

[0018] An EV (Electric Vehicle) charging device, which is a station facility, may be installed at station 3. The EV charging device is installed in the parking lot of station 3. The EV charging device supplies power to the EV under the control of a power control system. The EV is charged by being connected to the EV charging device.

[0019] The external facility 13 is, for example, a facility such as a commercial building or an office building, an apartment building, or a detached house. Electrical equipment that is driven by power transmitted from the power transmission facility 11 is installed in the external facility 13. Such electrical equipment includes air conditioners, lighting equipment, elevators, and household electrical appliances. The number of external facilities 13 connected to the power transmission facility 11 is arbitrary.

[0020] In the first embodiment, the power usage status in the external facility 13 is managed by the power control system. On the other hand, the power control system is not involved in the control of power usage in the external facility 13. The control of power usage in the external facility 13 is executed independently by the external facility 13. In this way, the external facility 13 corresponds to a subject whose power usage status is managed by the power control system, but does not correspond to a subject controlled by the power control system. Note that the external facilities 13 whose power usage status is managed by the power control system may include facilities that correspond to subjects controlled by the power control system.

[0021] Next, the configuration of the power control system will be described. Fig. 2 is a diagram showing an example of the configuration of the power control system 20 according to the first embodiment. The power control system 20 includes a plurality of electric trains 5, station equipment, a power feeding system equipment 2, and a power control device 21. The power control device 21 is installed, for example, in an operation control center of the railway system 1. A commander at the operation control center monitors the operation status of the electric trains 5 and issues work instructions to the crew of the electric trains 5 or station staff. Note that the plurality of electric trains 5, the station equipment, and the power feeding system equipment 2 are not shown in Fig. 2.

[0022] In the first embodiment, the managed object is an object whose power usage status is managed by the power control device 21. The power control device 21 monitors the status of the managed object. Each train 5, the substation 6 of the power supply system equipment 2, each station equipment, and the external facility 13 are each managed object. FIG. 2 shows one of the multiple managed objects. Each managed object transmits status data to the power control device 21. The power control device 21 acquires status data of each managed object. The power control device 21 monitors the power usage status in the railway system 1 and the external facility 13 based on the acquired status data. The status data includes at least one of data indicating the electrical status of the managed object and data indicating the physical status of the managed object. Details of the status data will be described later.

[0023] Status data for some of the multiple managed devices may be temporarily stored in a cloud environment and transmitted from the cloud environment to the power control device 21. FIG. 2 shows a cloud server 41 that stores status data in the cloud environment. The cloud server 41 shown in FIG. 2 is one of the components of the power control system 20. The cloud server 41 is a server constructed in a cloud environment that includes computer resources provided by a cloud service platform. The cloud server 41 is connected to a network. The status data transmitted from the managed devices is input to the cloud server 41 via the network.

[0024] Of the multiple managed devices, each managed device that transmits status data to the power control device 21 is connected to a network and transmits status data to the power control device 21 via the network. The cloud server 41 transmits status data to the power control device 21 via the network. In the first embodiment, the network is, for example, a WAN (Wide Area Network) such as the Internet, but may also be a LAN (Local Area Network).

[0025] The power control system 20 includes a human machine interface (HMI) 42. The HMI 42 is an input / output device that receives information input to the power control device 21 and outputs information transmitted from the power control device 21. The HMI 42 is connected to a network. The HMI 42 transmits information to the power control device 21 via the network. The power control device 21 transmits information to the HMI 42 via the network. The HMI 42 may be provided in the power control device 21, for example.

[0026] The power control device 21 includes a data acquisition unit 22, a data storage unit 23, a calculation unit 24, a transmission processing unit 25, and a communication unit .

[0027] The communication unit 26 is an interface for transmitting and receiving information, and communicates with devices external to the power control device 21. In the example shown in Fig. 2, the communication unit 26 communicates with each of a plurality of managed objects, the cloud server 41, and the HMI 42. The communication unit 26 also communicates with controlled objects, which will be described later. The communication unit 26 is, for example, a LAN terminal that is a wired network terminal, but is not limited to this, and may perform wireless communication by a wireless LAN system.

[0028] The communication unit 26 receives status data transmitted from each of the multiple managed objects. When status data for some of the multiple managed objects is stored in the cloud server 41, the data acquisition unit 22 receives the status data transmitted from the cloud server 41. The communication unit 26 outputs the received status data to the data acquisition unit 22. As a result, the data acquisition unit 22 acquires status data from the multiple managed objects. The status data acquired by the data acquisition unit 22 is status data for at least one of the managed objects among the power supply system equipment 2, the train 5, and the station equipment. The data acquisition unit 22 acquires at least one of the electrical data and physical data of the managed objects. The data acquisition unit 22 outputs the acquired status data to the data holding unit 23.

[0029] The communication unit 26 receives the simulation condition information transmitted from the HMI 42. The communication unit 26 outputs the received simulation condition information to the data acquisition unit 22. As a result, the data acquisition unit 22 acquires the simulation condition information. The simulation condition information is information indicating the conditions of a simulation executed by a simulator 34, which will be described later. The data acquisition unit 22 outputs the acquired simulation condition information to the data holding unit 23.

[0030] The data holding unit 23 includes a state data holding unit 31, a simulation condition holding unit 32, and a control parameter holding unit 33. The state data holding unit 31 holds state data input to the data holding unit 23. The simulation condition holding unit 32 holds simulation condition information input to the data holding unit 23. In this manner, the data holding unit 23 holds the state data and simulation condition information acquired by the data acquisition unit 22.

[0031] The simulation condition information includes vehicle characteristic information, train schedule information, line information, and substation characteristic information. The vehicle characteristic information is information indicating the characteristics of each of the multiple trains 5. The train schedule information is information indicating the train schedule of each of the multiple trains 5. The line information is information indicating, for each of the multiple trains 5, the railway line on which the train 5 operates. The line information includes information on the operating system, which is the specific travel route of each train 5. The substation characteristic information is information indicating the characteristics of the substation 6.

[0032] Note that each of the vehicle characteristic information, the bus schedule information, the line information, and the substation characteristic information is an example of information included in the simulation condition information. The simulation condition information does not have to include one or more of the vehicle characteristic information, the bus schedule information, the line information, and the substation characteristic information. The simulation condition information may include information other than the vehicle characteristic information, the bus schedule information, the line information, and the substation characteristic information.

[0033] The control parameters calculated by the calculation unit 24 are input to the data holding unit 23. The control parameter holding unit 33 holds the simulation condition information input to the data holding unit 23. In this manner, the data holding unit 23 holds the control parameters calculated by the calculation unit 24.

[0034] The calculation unit 24 calculates control parameters used for controlling power usage in the railway system 1 by calculating the status data acquired by the data acquisition unit 22. The calculation unit 24 calculates control parameters used for controlling power in at least one controlled object among the power supply system equipment 2, the train 5, and the station equipment, based on status data of a controlled object different from the controlled object. In the first embodiment, the controlled object is a target for which power control is executed by the power control device 21.

[0035] The calculation unit 24 includes a simulator 34 and a control parameter calculation unit 35. The simulator 34 simulates the power consumption of the railway system 1 based on the status data and the train schedule of the trains 5. The simulations executed by the simulator 34 are a train operation simulation, which will be described later, and a power simulation, which will be described later. The control parameter calculation unit 35 calculates control parameters based on the results of the simulation by the simulator 34. The control parameter calculation unit 35 outputs the calculated control parameters to the control parameter storage unit 33. The control parameters calculated by the control parameter calculation unit 35 are stored in the control parameter storage unit 33.

[0036] The calculation unit 24 includes a data processing unit that processes the status data acquired by the data acquisition unit 22 for display on the HMI 42. The data processing unit outputs the processed status data to the communication unit 26. The communication unit 26 transmits the processed status data to the HMI 42. The data processing unit is not shown in the figure.

[0037] The simulator 34 reads out status data from the status data storage unit 31. The simulator 34 reads out simulation condition information from the simulation condition storage unit 32. The simulator 34 executes an operation simulation based on the train schedule information and route information included in the read out simulation condition information. The operation simulation is a simulation of the operation state when the train 5 is operated on the route shown in the train schedule.

[0038] Furthermore, the simulator 34 executes a power simulation based on the read state data, the result of the operation simulation, and the vehicle characteristic information and substation characteristic information included in the read simulation condition information. The power simulation is a simulation of power consumption in the railway system 1. The simulator 34 executes a power simulation in the case where the train 5 is operated according to the result of the operation simulation. The simulator 34 outputs the result of the power simulation to the control parameter calculation unit 35. Furthermore, the simulator 34 outputs the result of the power simulation to the communication unit 26. The communication unit 26 transmits the result of the power simulation to the HMI 42.

[0039] The control parameter calculation unit 35 calculates the control parameters based on the results of the power simulation. At that time, the control parameter calculation unit 35 calculates the control parameters based on a plurality of objective functions representing different objectives. The control parameter calculation unit 35 calculates the control parameters that optimize each of the plurality of objective functions. Here, the plurality of objective functions are assumed to be four objective functions.

[0040] The first objective function of the four objective functions represents the amount of carbon dioxide emissions in at least one of the railway system 1 and the external facility 13. The objective represented by the first objective function is to minimize the amount of carbon dioxide emissions in the entire system including the railway system 1 and the external facility 13. Minimizing carbon dioxide emissions can also be said to mean minimizing the amount of power consumed or lost in the power system, or minimizing the amount of power supplied to the railway system 1 from the commercial system.

[0041] The second objective function of the four objective functions represents the electricity fee in at least one of the railway system 1 and the external facility 13. The objective represented by the second objective function is to minimize the electricity fee in the entire system including the railway system 1 and the external facility 13. Here, minimizing the electricity fee in the entire system refers to minimizing the total amount of electricity fees in all facilities in the entire system that are charged an electricity fee.

[0042] The third objective function of the four objective functions represents the stability of the power system in at least one of the railway system 1 and the external facility 13. The objective represented by the third objective function is to stabilize the power system in the railway system 1 and the external facility 13. Stabilization of the power system includes, for example, mitigating abrupt changes in power flow when there is a change in weather.

[0043] Of the four objective functions, the fourth objective function represents the deviation between the actual operation of the train 5 and the train schedule. The objective represented by the fourth objective function is to minimize the deviation between the actual operation of the train 5 and the train schedule.

[0044] The control parameter calculation unit 35 adjusts the weighting of each of the multiple objective functions, and calculates the control parameters based on the multiple objective functions whose weightings have been adjusted.

[0045] Here, for each of the multiple objective functions, a coefficient representing weighting is defined as ω k Here, k represents an integer from 1 to m, and m represents the number of objective functions. The control parameter calculation unit 35 calculates each of the coefficients ω1, . . . , ω m In the above example, m=4. ω1 is a coefficient representing the weighting of the first objective function. ω2 is a coefficient representing the weighting of the second objective function. ω3 is a coefficient representing the weighting of the third objective function. ω4 is a coefficient representing the weighting of the fourth objective function.

[0046] In the following explanation, x is a control parameter, F k Let (x) represent each of the multiple objective functions. F1(x) represents the first objective function. F2(x) represents the second objective function. F3(x) represents the third objective function. F4(x) represents the fourth objective function.

[0047] The control parameter calculation unit 35 is F k Find the x for which F(x), the sum of (x), is minimum or maximum. F(x) is expressed by the following formula (1). F(x)=ω1×F1(x)+ω2×F2(x)+ω3×F3(x)+ω4×F4(x) ···(1)

[0048] In this manner, the control parameter calculation unit 35 calculates the control parameters based on a plurality of objective functions whose weights have been adjusted.

[0049] Here, the control mode when the railway system 1 is controlled only for the purpose of minimizing carbon dioxide emissions in the entire system including the railway system 1 and the external facility 13 is referred to as the first control mode. The control mode when the railway system 1 is controlled only for the purpose of minimizing electricity charges in the entire system including the railway system 1 and the external facility 13 is referred to as the second control mode. The control mode when the railway system 1 is controlled only for the purpose of stabilizing the power system in the railway system 1 and the external facility 13 is referred to as the third control mode. The control mode when the railway system 1 is controlled only for the purpose of minimizing the deviation between the actual operation of the train 5 and the train schedule is referred to as the fourth control mode. Adjusting each coefficient, which is an element included in the set of coefficients [ω1, ω2, ω3, ω4], can be said to be adjusting the proportion of control by each of these control modes. In the following description, adjusting the proportion of the control modes refers to adjusting the weighting for each of the multiple objective functions. The proportion of the control modes represents the distribution of each coefficient in the set of coefficients [ω1, ω2, ω3, ω4]. Hereinafter, the set of coefficients [ω1, ω2, ω3, ω4] will be referred to as mode proportion information.

[0050] The HMI 42 includes a communication unit 43, a display unit 44 that displays information, and an operation unit 45 that accepts operations for inputting information. The communication unit 43 communicates with devices external to the HMI 42. In the example shown in FIG. 2, the communication unit 43 communicates with the power control device 21.

[0051] The communication unit 43 receives the status data that has been processed for display, and outputs the received status data to the display unit 44. The display unit 44 displays the status data input to the display unit 44. The HMI 42 may receive the control parameters calculated by the control parameter calculation unit 35 at the communication unit 43, and display the status of the control of the railway system 1 by the power control system 20 on the display unit 44 based on the control parameters. The communication unit 43 receives the results of the power simulation by the simulator 34, and outputs the results of the power simulation to the display unit 44. The display unit 44 displays the results of the power simulation input to the display unit 44.

[0052] The operation unit 45 is operated by a commander engaged in monitoring and control work at the operation control center of the railway system 1. The operation unit 45 accepts an operation for specifying the ratio of the control mode. That is, the operation unit 45 accepts an operation for specifying the weighting of each of the multiple objective functions. The communication unit 43 transmits input information input to the HMI 42 by an operation on the operation unit 45 to the power control device 21. The communication unit 26 of the power control device 21 receives the input information and outputs the input information to the calculation unit 24. The control parameter calculation unit 35 sets the mode ratio information according to the input information input to the calculation unit 24. In this way, the control parameter calculation unit 35 adjusts the weighting of each of the multiple objective functions according to the operation on the operation unit 45.

[0053] The transmission processing unit 25 transmits the control parameters calculated by the control parameter calculation unit 35 to the controlled object via the communication unit 26. The transmission processing unit 25 includes a transmission data creation unit 36, a transmission object determination unit 37, and a transmission data output unit 38.

[0054] The transmission data creation unit 36 ​​reads out the control parameters from the control parameter storage unit 33 and creates transmission data. The transmission data is data including the control parameters read out from the control parameter storage unit 33, and is data to be transmitted to the equipment that is the controlled object. The train 5, the substation 6 of the power supply system equipment 2, and the station facilities are each the controlled object. The external facilities 13 whose power usage status is managed by the power control system 20 may include facilities that are the controlled object. The transmission data creation unit 36 ​​outputs the created transmission data to the transmission object determination unit 37. The control of electricity usage will be described later.

[0055] The transmission target discrimination unit 37 discriminates a controlled target to which the transmission data is to be transmitted based on the transmission data. The transmission target discrimination unit 37 outputs the transmission data linked with information indicating the discriminated controlled target to the transmission data output unit 38. The transmission data output unit 38 outputs the transmission data to the communication unit 26. The communication unit 26 transmits the transmission data to the controlled target indicated by the information linked with the transmission data. In Fig. 2, the arrow pointing from the communication unit 26 to the outside of the power control device 21 indicates that the transmission data is transmitted from the communication unit 26 to the controlled target.

[0056] Next, an example of the status data acquired by the data acquisition unit 22 will be described. Hereinafter, the status data indicating the electrical status of the managed object will be referred to as "electrical data." Also, the status data indicating the physical status of the managed object will be referred to as "physical data."

[0057] The data acquisition unit 22 acquires electrical data of the train 5 and physical data of the train 5. Examples of the electrical data of the train 5 include data on the voltage, current, power, or amount of power supplied to the train 5, data on the power factor of the train 5, and data on the amount of regenerative throttling power. The amount of regenerative throttling power is the amount of power of the train 5 when regenerative throttling control is performed. The regenerative throttling control is control that suppresses the supply of part or all of the regenerative power to the feeder 7. The power control device 21 performs regenerative throttling control when the power running power required by the train 5 performing power running is less than the regenerative power generated by the train 5 performing regenerative operation. The power control device 21 prevents the voltage of the feeder 7 from becoming too high by performing regenerative throttling control.

[0058] Examples of the physical data of the train 5 include data such as the weight of the cars constituting the train 5, the location of the train 5, the speed of the train 5, the number of passengers on the train 5, the total weight of passengers on the train 5, or the altitude of the location of the train 5. The power control device 21 monitors the status of the train 5 and the power usage status of the train 5 by acquiring status data of the train 5. The physical data of the train 5 may also include data indicating the operation history of the train 5. Examples of the data indicating the operation history are data such as the time when the train 5 departs from station 3, the time when the train 5 arrives at station 3, the time the train 5 travels between stations, or the time when the train 5 stops at station 3.

[0059] The data acquisition unit 22 acquires electrical data of the substation 6, which is the power supply system equipment 2. Examples of the electrical data of the substation 6 include data on the current, voltage, power, or amount of power output from the substation 6 to the feeder 7, or tap values ​​of a transformer provided in the substation 6. The power control device 21 acquires the status data of the substation 6 to monitor the state in which power is supplied from the substation 6 to the feeder 7. An example of the physical data of the substation 6 is data such as the number of operating rectifiers provided in the substation 6.

[0060] The data acquisition unit 22 acquires electrical data and physical data of the station equipment. Examples of the electrical data of the power supply device 9, which is the station equipment, include data on the power input to the power supply device 9, data on the power output from the power supply device 9, and a regeneration determination index value. The regeneration determination index value is an index value for determining whether the train 5 is performing a regenerative operation.

[0061] Examples of electrical data of the station building equipment 10, which is station equipment, include data on the voltage, current, power, or amount of power supplied to the station building equipment 10, or data on the power factor of the station building equipment 10. Examples of physical data of the station building equipment 10, which is station equipment, include data on the number of people passing through an automatic ticket gate. Examples of electrical data of a solar power generation device, which is station equipment, include data on the amount of power generated. Examples of electrical data of an EV charging device, which is station equipment, include data on the power or amount of power output from the EV charging device to an EV. Examples of physical data of an EV charging device, which is station equipment, include data on the number of EVs connected to the EV charging device, or the number of EVs waiting to be charged. Examples of electrical data of power transmission equipment 11, which is station equipment, include data on the power or amount of power transmitted from the power transmission equipment 11 to an external facility 13. The power control device 21 monitors the status of power being supplied from the power transmission equipment 11 to the external facility 13 by acquiring status data of the power transmission equipment 11.

[0062] The data acquisition unit 22 acquires electrical data of the external facility 13. Examples of the electrical data of the external facility 13 include data on the voltage, current, power, or amount of power supplied to the external facility 13, or data on the power factor of equipment installed in the external facility 13. The power control device 21 monitors the usage status of power in the external facility 13 by acquiring the status data of the external facility 13.

[0063] When the controlled object is managed by multiple railway operators, the data acquisition unit 22 acquires status data of the controlled object managed by the multiple railway operators. In this case, the calculation unit 24 calculates control parameters used for controlling the controlled object managed by the multiple railway operators based on the acquired status data. The transmission processing unit 25 transmits the control parameters to the controlled object managed by the multiple railway operators.

[0064] For example, in the railway system 1, trains 5 of multiple railway operators may be operated across lines managed by each of the multiple railway operators. In other words, trains 5 of multiple railway operators may be operated on a common line. In this case, each of the multiple trains 5 operated by each railway operator is a managed object managed by the multiple railway operators. The railway system 1 includes multiple trains 5 operated by each railway operator. The data acquisition unit 22 acquires status data of each train 5 operated by each railway operator.

[0065] When the train 5 runs across routes managed by multiple railroad operators, a transformer may be provided at the demarcation point of the area managed by each railroad operator, and electrical data may be acquired by the transformer. An example of electrical data when the train 5 runs across routes managed by multiple railroad operators is data such as voltage or current flowing in or out between the multiple railroad operators. An example of physical data when the train 5 runs across routes managed by multiple railroad operators is data such as the number of trains 5 running.

[0066] When trains 5 of multiple railroad operators operate on a common route, the data acquisition unit 22 acquires vehicle characteristic information, operation schedule information, and route information, which are simulation condition information for the trains 5 operated by each railroad operator. The simulation condition information for the trains 5 operated by each railroad operator is provided by each railroad operator.

[0067] In the first embodiment, the railway system 1 may be one in which only trains 5 of one railway operator are operated on all routes. The railway system 1 may include routes on which only trains 5 of one railway operator are operated and routes on which trains 5 of multiple railway operators are operated.

[0068] The status data acquired by the data acquisition unit 22 includes weather data for the location of the managed object. The weather data includes data indicating the weather or temperature at the location where the managed object is located. The weather data for the location where the managed object is located is included in the status data for the managed object. The weather data is acquired, for example, from a business that distributes weather data. When the data acquisition unit 22 acquires weather data, the calculation unit 24 calculates control parameters to be used for controlling the controlled object based on the acquired weather data. Note that the status data acquired by the power control device 21 may be data regarding the state of the managed object, and is not limited to the above data.

[0069] Next, a description will be given of examples of the control parameters output by the transmission processing unit 25. Here, five examples of the control parameters output by the transmission processing unit 25 will be described.

[0070] A first example of the control parameter is a control parameter for controlling the voltage output from the substation 6 to the feeder 7. The transmission processing unit 25 transmits the control parameter of the first example to the substation 6. The control parameter of the first example includes a parameter for changing the tap value of a transformer provided in the substation 6, or a parameter for changing the number of rectifiers in operation. By controlling the substation 6 using the control parameter of the first example, it is possible to increase the regenerative power that enables interchange between the trains 5, and to effectively utilize the regenerative power. This enables the power control device 21 to reduce the power consumption due to the operation of the trains 5.

[0071] A second example of the control parameters is a control parameter for controlling the power supply device 9 to take in power from the feeder line 7. The transmission processing unit 25 transmits the control parameters of the second example to the power supply device 9. The control parameters of the second example include a regeneration determination index value, etc. By controlling the power supply device 9 using the control parameters of the second example, it is possible to reduce loss of regenerative power. This enables the power control device 21 to reduce power consumption in the railway system 1.

[0072] A third example of the control parameters is a control parameter for controlling the train 5. The transmission processing unit 25 transmits the control parameters of the third example to the train 5. The control parameters of the third example include a parameter for adjusting an instruction issued from the operation control center to the driver of the train 5. The setting of the operation content shown on the operation support screen of the train 5, or the change of the run curve, etc. are performed based on the parameter. In addition, the control parameters of the third example include a parameter for controlling the vehicle equipment of the train 5. The control of the train 5 by the control parameters of the third example makes it possible to promote power saving of the train 5. Alternatively, the control parameters of the third example make it possible to reduce the deviation between the actual operation of the train 5 and the operation schedule by adjusting the running of the train 5.

[0073] A fourth example of the control parameters is a control parameter for controlling the flow of people at the station 3 or the train 5. The control parameters of the fourth example include a parameter for setting the content of guidance to be presented to people at the station 3 or passengers on the train 5. The guidance is displayed on a bulletin board installed in a waiting room of the station 3, a train vision, or a mobile terminal carried by the people at the station 3 or passengers on the train 5. By controlling the flow of people using the control parameters of the fourth example, the workload of station staff can be reduced. Alternatively, by controlling the flow of people using the control parameters of the fourth example, congestion at the station 3 or the train 5 can be alleviated, thereby improving the QOL (Quality of Life) of the people at the station 3 or passengers on the train 5. The alleviation of congestion on the train 5 reduces the number of passengers on the train 5, which reduces the weight of the train 5 and makes it possible to reduce power consumption when the train 5 is powered. Furthermore, by reducing the number of passengers on the train 5, it is possible to maintain comfort inside the car even if the strength of the air conditioning is reduced, making it possible to reduce power consumption of the train 5.

[0074] A fifth example of the control parameters is a control parameter related to the control of station facilities. The control parameters of the fifth example include a parameter for controlling the charging of the power supply device 9, a parameter for controlling the power supply from the power supply device 9 to the EV charging device or the power transmission facility 11, or a parameter for controlling the power supply from the solar power generation device to the power supply device 9 or the power transmission facility 11. The control parameters of the fifth example also include a parameter for delivering guidance to EV users encouraging charging by the EV charging device. By encouraging users who receive the guidance to charge their EVs, the effective use of the power stored in the power supply device 9 or the power generated by the solar power generation device is promoted. The control of the station facilities by the control parameters of the fifth example enables the effective use of power. Alternatively, the control of the station facilities by the control parameters of the fifth example makes it possible to mitigate sudden changes in the power flow.

[0075] When trains 5 of multiple railroad operators are operated on a common line, the trains 5 operated by each railroad operator are controlled objects. The transmission processing unit 25 transmits control parameters to the trains 5 operated by each railroad operator.

[0076] In the above, the control parameter calculation unit 35 sets the mode ratio information according to the operation of the operation unit 45. The control parameter calculation unit 35 may set the mode ratio information based on the state data acquired by the data acquisition unit 22, regardless of the operation of the operation unit 45. For example, it is assumed that the control parameter calculation unit 35 determines that the deviation between the actual operation of the train 5 and the operation schedule exceeds a certain standard based on the data indicating the operation record of the train 5. In this case, the control parameter calculation unit 35 increases the weighting of the fourth objective function compared to when there is no deviation. In addition, when the control parameter calculation unit 35 determines that the weather has suddenly changed based on the weather data, it increases the weighting of the third objective function compared to when there is no change in the weather. In this way, the power control device 21 selects the most appropriate ratio of each control mode in consideration of the situation determined from the state data. As a result, the power control device 21 can optimize the control of the railway system 1 in accordance with the change in the situation.

[0077] The mode ratio information set in the control parameter calculation unit 35 may reflect interactions between the control effects of the multiple control modes. For example, when a first priority control mode is given to one of the multiple control modes, a control mode that has an interaction with the first priority control mode is selected as the control mode that is given second priority after the first priority control mode. This allows the control parameter calculation unit 35 to calculate control parameters that take into account interactions between the control modes.

[0078] Next, examples of a method for performing a simulation and calculating control parameters will be described. Here, two methods will be described as examples of the simulation and calculating control parameters.

[0079] In a first method of simulation and control parameter calculation, the calculation unit 24 acquires in real time state data input to the power control device 21, and performs simulation and control parameter calculation. In the first method, when state data is acquired by the data acquisition unit 22, the calculation unit 24 calculates the control parameters by performing an operation on the acquired state data.

[0080] The data acquisition unit 22 acquires state data of a plurality of managed objects, and stores a state data group, which is the state data of the plurality of managed objects, in the state data storage unit 31. The state data group stored in the state data storage unit 31 is a group of state data acquired from a plurality of managed objects. The calculation unit 24 calculates a control parameter used for controlling power in the controlled object based on the state data group including state data of a managed object different from the controlled object. The state data group may be a group of state data acquired simultaneously for a plurality of managed objects. In the first method, when the state data group is stored in the state data storage unit 31, the calculation unit 24 reads out the state data group from the state data storage unit 31. The simulator 34 executes an operation simulation and a power simulation based on the read state data group.

[0081] The control parameter calculation unit 35 calculates control parameters based on the results of the power simulation. The control parameter calculation unit 35 sets mode ratio information based on the operation of the operation unit 45 or state data, and calculates control parameters that minimize or maximize the sum of multiple objective functions. In other words, the control parameter calculation unit 35 calculates control parameters that optimize multiple objective functions with adjusted weighting. The control parameter calculation unit 35 outputs a control parameter group that is the control parameters for multiple controlled objects.

[0082] Fig. 3 is a flowchart showing an example of an operation procedure of the power control system 20 according to the embodiment 1. Fig. 3 shows an example of an operation procedure of the power control device 21 when the calculation unit 24 performs a simulation and calculates control parameters by the first method.

[0083] In step S1, the data acquisition unit 22 acquires state data of the managed objects. The data acquisition unit 22 stores a group of state data of the multiple managed objects in the state data storage unit 31.

[0084] In step S2, the control parameter calculation unit 35 sets mode ratio information. The control parameter calculation unit 35 sets the mode ratio information according to information input by operating the operation unit 45. Alternatively, the control parameter calculation unit 35 sets the mode ratio information based on the state data acquired in step S1.

[0085] The simulator 34 reads out a state data group from the state data storage unit 31. The simulator 34 reads out simulation condition information from the simulation condition storage unit 32. In step S3, the simulator 34 executes an operation simulation based on the state data group and the train schedule information and route information of the simulation condition information.

[0086] In step S4, the simulator 34 executes a power simulation based on the results of the operation simulation in step S3, the state data group, and the vehicle characteristic information and the substation characteristic information of the simulation condition information.

[0087] In step S5, the control parameter calculation unit 35 calculates control parameters based on the mode ratio information set in step S2 and the result of the power simulation in step S4. The control parameter calculation unit 35 stores the calculated control parameters in the control parameter storage unit 33.

[0088] The transmission data creation unit 36 ​​creates transmission data including the control parameters. In step S6, the transmission data output unit 38 outputs the transmission data including the control parameters to the communication unit 26. The communication unit 26 transmits the transmission data including the control parameters to the controlled object. With the above, the power control device 21 ends the operation according to the procedure shown in Fig. 3. The power control device 21 constantly acquires status data of multiple managed objects and executes the operation according to the procedure shown in Fig. 3.

[0089] The calculation unit 24 may calculate the control parameters using artificial intelligence (AI). In this case, the calculation unit 24 calculates the control parameters by inputting the state data to a trained model that has learned the relationship between the state data and the control parameters.

[0090] Next, a second method of simulation and control parameter calculation will be described. Simulation and control parameter calculation by the second method are realized by a calculation unit according to a modified example. FIG. 4 is a diagram showing an example of the configuration of a calculation unit 51 according to a modified example of the first embodiment. The calculation unit 51 includes a simulator 52, a control parameter calculation unit 53, and a time-based control parameter storage unit 54. FIG. 4 also shows an HMI 42 that exchanges information with the calculation unit 51 via the communication unit 26. The communication unit 26 is not shown in FIG. 4.

[0091] In the second method, the power control device 21 accumulates the status data acquired by the data acquisition unit 22 in the data holding unit 23. The calculation unit 51 acquires the status data collected in the data holding unit 23 from the data holding unit 23 all at once, and performs a simulation and calculates control parameters for the status data for a set period. In the second method, the calculation unit 51 performs the simulation and calculates control parameters by so-called batch processing.

[0092] The data acquisition unit 22 acquires state data for each of the multiple managed objects, and stores a state data group that is the state data for the multiple managed objects in the state data holding unit 31. In the second method, the acquisition of state data by the data acquisition unit 22 and the storage of the state data group in the state data holding unit 31 are repeated as needed, whereby the state data group is accumulated in the data holding unit 23.

[0093] The calculation unit 51 reads out the status data group stored in the status data storage unit 31 at a predetermined date and time. The calculation unit 51 reads out one day's worth of status data group, for example, at a predetermined time during the night. In this case, the calculation unit 51 acquires the status data group in a one-day cycle. Note that the cycle in which the calculation unit 51 acquires the status data group is arbitrary. The cycle may be a period shorter than one day or a period longer than one day.

[0094] The simulator 52 executes an operation simulation and a power simulation based on a group of state data for a set period. The control parameter calculation unit 53 calculates control parameters based on the results of the power simulation. That is, in the second method, the calculation unit 51 calculates the control parameters by calculating the state data for the set period. The set period refers to each time period when a day is divided into a plurality of time periods, for example.

[0095] The control parameter calculation unit 53 calculates a group of control parameters, which are control parameters for a plurality of controlled objects, for each set period. The control parameter calculation unit 53 outputs the group of control parameters for each set period to the time-specific control parameter storage unit 54.

[0096] The control parameter groups input to the time-based control parameter storage unit 54 are provided with type information indicating the time-based type of the set period. The control parameter groups are linked with the type information and stored in the time-based control parameter storage unit 54. The calculation unit 51 stores the time-based control parameters, which are control parameters linked with the type information, in the time-based control parameter storage unit 54. The time-based control parameter storage unit 54 accumulates a plurality of control parameter groups linked with type information having different contents.

[0097] Fig. 5 is a diagram showing an example of time-based control parameters held in the calculation unit 51 according to the modification of the first embodiment. In Fig. 5, the control parameters, which are time-based control parameters, and type information linked to the control parameters are shown as tabular data. In the example shown in Fig. 5, the control parameters are linked to mode ratio information indicating the ratio of the control modes applied when the control parameters were calculated, in addition to the type information.

[0098] 5, the set period is classified by three elements: "day type" indicating the division between weekdays and holidays, "season type" indicating the season, and "time period." The classification information includes information on "day type," "season type," and "time period."

[0099] For example, assume that a "control parameter group A" is calculated based on state data for a certain period, and that period is from 6:00 to 7:00 on a weekday in summer. In this case, the type information linked to "control parameter group A" includes information on "day type [weekday]," "season type [summer]," and "time period [6:00-7:00]," which indicate the type of the period. In the example shown in FIG. 5, "control parameter group A" is linked to "pattern A" along with the type information. "Pattern A" is mode ratio information indicating the ratio of the control modes applied when "control parameter group A" was calculated.

[0100] In FIG. 5, "control parameter group A" and "control parameter group B" are examples of time-specific control parameters stored in the time-specific control parameter storage unit 54. "Control parameter group B" is a control parameter group calculated based on state data for a period from 7:00 to 8:00 on a weekday in summer. In this case, the type information linked to "control parameter group B" includes information on "day type [weekday]", "season type [summer]", and "time period [7:00-8:00]" indicating the type of the period. In addition, in the example shown in FIG. 5, the ratio of the control mode applied when "control parameter group B" is calculated is the same as the ratio of the control mode applied when "control parameter group A" is calculated. "Control parameter group B" is linked to "pattern A", which is mode ratio information, together with the type information. In this way, the time-specific control parameters stored in the time-specific control parameter storage unit 54 are linked to type information according to the set period and mode ratio information according to the ratio of the control modes.

[0101] When the controlled object is controlled, the control parameter calculation unit 53 searches for time-specific control parameters linked to type information that applies to the time when the control is performed in the time-specific control parameter storage unit 54. The control parameter calculation unit 53 identifies the time-specific control parameters linked to type information that applies to the time when the control is performed by searching, and reads out the identified time-specific control parameters. In addition, the control parameter calculation unit 53 determines whether or not there is a time-specific control parameter among the read-out time-specific control parameters, the mode ratio information linked to the time-specific control parameter being the same as the mode ratio information set when the controlled object is controlled.

[0102] If there is a time-based control parameter whose associated mode ratio information is the same as the set mode ratio information among the read-out time-based control parameters, the control parameter calculation unit 53 selects the time-based control parameter. If there is no time-based control parameter whose associated mode ratio information matches the set mode ratio information among the read-out time-based control parameters, the control parameter calculation unit 53 performs a search again in the time-based control parameter storage unit 54. The control parameter calculation unit 53 searches the time-based control parameter storage unit 54 for a time-based control parameter whose associated mode ratio information matches the set mode ratio information and whose associated mode ratio information is the same as the set mode ratio information, with the time-based control parameter whose associated mode ratio information matches the set mode ratio information. The control parameter calculation unit 53 selects the time-based control parameter identified by the search.

[0103] In this manner, the control parameter calculation unit 53 selects time-specific control parameters based on the type information and mode ratio information from among the time-specific control parameters stored in the time-specific control parameter storage unit 54. The control parameter calculation unit 53 selects time-specific control parameters based on the type information and mode ratio information, thereby determining control parameters scheduled to be transmitted by the transmission processing unit 25. The control parameter calculation unit 53 outputs the determined control parameters to the control parameter storage unit 33.

[0104] The control parameter storage unit 33 stores the control parameters input to the control parameter storage unit 33 as a schedule indicating when the control parameters are to be transmitted. The transmission data creation unit 36 ​​reads out the control parameters stored as the schedule from the control parameter storage unit 33. The transmission data output unit 38 outputs transmission data including the control parameters according to the schedule.

[0105] Fig. 6 is a diagram showing an example of a schedule for transmitting control parameters by the transmission processing unit 25 in a modification of the first embodiment. In Fig. 6, the control parameters and the days and time periods for transmitting the control parameters are shown as tabular data. Here, it is assumed that the mode ratio information linked to the time-specific control parameters is the same as the mode ratio information set when the control target is controlled.

[0106] FIG. 6 illustrates a part of the schedule for "August Y, XXXX." "August Y, XXXX" is assumed to be a weekday. The type information associated with "control parameter group A" illustrated in FIG. 5 is type information applicable to the period from 6:00 to 7:00 on "August Y, XXXX." The control parameter calculation unit 53 selects "control parameter group A" as the control parameters to be applied to the control from 6:00 to 7:00 on "August Y, XXXX." Moreover, the type information associated with "control parameter group B" illustrated in FIG. 5 is type information applicable to the period from 7:00 to 8:00 on "August Y, XXXX." The control parameter calculation unit 53 selects "control parameter group B" as the control parameters to be applied to the control from 7:00 to 8:00 on "August Y, XXXX."

[0107] The control parameter storage unit 33 stores a "control parameter group A" linked to each piece of information, "August Y, XXXX year" indicating the date and "6:00-7:00" indicating the time period. Also, a "control parameter group B" linked to each piece of information, "August Y, XXXX year" indicating the date and "7:00-8:00" indicating the time period is stored. In this way, the control parameter storage unit 33 stores the control parameters as a schedule indicating when the control parameters are to be transmitted.

[0108] Fig. 7 is a flowchart showing an example of an operation procedure of the power control system 20 according to the modification of the embodiment 1. Fig. 7 shows an example of an operation procedure of the power control device 21 when the calculation unit 51 performs a simulation and control parameter calculation by the second method. It is assumed that the state data acquired by the data acquisition unit 22 is accumulated in the state data holding unit 31 at the start of the operation procedure shown in Fig. 7.

[0109] Steps S11 to S14 are operations for obtaining the time-specific control parameters, and are periodically executed. In step S11, the simulator 52 reads out the state data stored in the state data storage unit 31. The simulator 52 also reads out the simulation condition information from the simulation condition storage unit 32.

[0110] In step S12, the simulator 52 executes an operation simulation and a power simulation. The simulator 52 executes an operation simulation based on the state data group, and the train schedule information and the line information in the simulation condition information. The simulator 52 executes a power simulation based on the results of the operation simulation, the state data group, and the vehicle characteristic information and the substation characteristic information in the simulation condition information. The simulator 52 executes an operation simulation and a power simulation for each set period.

[0111] The control parameter calculation unit 53 sets the mode ratio information according to information input by operating the operation unit 45. Alternatively, the control parameter calculation unit 53 sets the mode ratio information based on the state data read out in step S11. In step S13, the control parameter calculation unit 53 calculates control parameters based on the set mode ratio information and the result of the power simulation in step S12. The control parameter calculation unit 53 calculates the control parameters for each set period.

[0112] In step S14, the control parameter calculation unit 53 stores the time-specific control parameters, which are control parameters linked to the type information, in the time-specific control parameter storage unit 54. Through steps S11 to S14, the time-specific control parameters are accumulated in the time-specific control parameter storage unit 54.

[0113] Steps S15 and S16 are operations performed when the controlled object is controlled. In step S15, the control parameter calculation unit 53 selects a time-specific control parameter to determine a control parameter to be transmitted. The control parameter calculation unit 53 searches for and identifies a time-specific control parameter associated with type information that corresponds to the time when the control is performed, and reads out the identified time-specific control parameter.

[0114] If there is a time-specific control parameter among the read-out time-specific control parameters whose mode ratio information linked to the time-specific control parameter is the same as the mode ratio information set when control of the controlled object is performed, the control parameter calculation unit 53 selects that time-specific control parameter.

[0115] If there is no time-specific control parameter whose associated mode ratio information matches the set mode ratio information among the read-out time-specific control parameters, the control parameter calculation unit 53 searches again in the time-specific control parameter storage unit 54. The control parameter calculation unit 53 searches in the time-specific control parameter storage unit 54 for a time-specific control parameter which is associated with type information whose conditions are closest to the time when control is performed and whose associated mode ratio information matches the set mode ratio information. The control parameter calculation unit 53 selects the time-specific control parameter identified by the search.

[0116] In this way, the control parameter calculation unit 53 selects the time-specific control parameters based on the type information and the mode ratio information, thereby determining the control parameters to be transmitted. The control parameter storage unit 33 stores the control parameters determined by the control parameter calculation unit 53 as a schedule indicating the schedule for transmitting the control parameters.

[0117] In step S16, the transmission data output unit 38 outputs the transmission data including the control parameters according to the schedule held in the control parameter holding unit 33. That is, the transmission data output unit 38 transmits the transmission data including the control parameters to the controlled object according to the schedule held in the control parameter holding unit 33. With the above, the power control device 21 ends the operation according to the procedure shown in FIG.

[0118] The calculation unit 51 may calculate the control parameters using AI. In this case, the calculation unit 51 calculates the control parameters by inputting state data to a trained model that has learned the relationship between the state data and the control parameters.

[0119] Next, a hardware configuration of the power control device 21 according to the first embodiment will be described. Fig. 8 is a diagram showing an example of a hardware configuration of the power control device 21 according to the first embodiment. The power control device 21 is realized by a computer system including a processing circuit 60 and a communication device 63. The processing circuit 60 includes a processor 61 and a memory 62. The processing circuit 60 is a circuit on which the processor 61 executes software.

[0120] The processing units of the power control device 21, that is, the data acquisition unit 22, the calculation unit 24, and the transmission processing unit 25, are realized by software, firmware, or a combination of software and firmware. The software or firmware is written as a program and stored in the memory 62. In the processing circuit 60, the processor 61 reads out and executes a power control program, which is a program stored in the memory 62, to realize the functions of the processing units of the power control device 21. The processing circuit 60 includes a memory 62 that stores the power control program that results in the processing of the power control system 20 being executed. It can also be said that the power control program causes a computer to execute the procedures and methods of the power control system 20.

[0121] The processor 61 is a CPU (also called a central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, processor, or DSP (digital signal processor)). The memory 62 is, for example, a non-volatile or volatile semiconductor memory such as a RAM (random access memory), a ROM (read only memory), a flash memory, an EPROM (erasable programmable read only memory), an EEPROM (registered trademark) (electrically erasable programmable read only memory), a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, or a DVD (digital versatile disk). The data holding unit 23 of the power control device 21 is realized by the memory 62.

[0122] The communication device 63 communicates with devices external to the power control device 21. The communication unit 26 of the power control device 21 is realized by the communication device 63. The communication device 63 receives status data of the object to be managed. The communication device 63 transmits transmission data including control parameters to the object to be controlled.

[0123] The power control device 21 may include an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The power control program may be stored in a recording medium such as a CD (Compact Disc)-ROM or a DVD-ROM, and the recording medium may be provided to realize the power control system 20.

[0124] In the above, the power control system 20 is realized by using the power control device 21. The power control system 20 may be configured with two or more devices. At least one of the two or more devices may be a cloud server or an on-premise server. Each of the two or more devices has a configuration similar to that of the processing circuit 60 and the communication device 63 shown in FIG. 8. Communication between the two or more devices is performed by the communication device 63.

[0125] The HMI 42 has a hardware configuration similar to that shown in FIG. 8. The communication unit 43 of the HMI 42 is realized by a configuration similar to that of the communication device 63. The HMI 42 also has an input device, which is a device for input, and a monitor that displays a screen. The input device includes, for example, a keyboard, a mouse, a keypad, or a touch panel. The operation unit 45 is realized by the input device. The monitor is, for example, an LCD (Liquid Crystal Display) or an organic EL (Electro-Luminescence) display. The display unit 44 is realized by the monitor.

[0126] According to the first embodiment, the power control device 21 includes a data acquisition unit 22 that acquires status data from at least one of the controlled objects among the power supply system equipment 2, the train 5, and the station equipment, a calculation unit 24 that calculates a control parameter used for controlling power in at least one of the controlled objects among the power supply system equipment 2, the train 5, and the station equipment based on the status data of the controlled object different from the controlled object, and a transmission processing unit 25 that transmits the calculated control parameter to the controlled object. The power control device 21 calculates the control parameter based on the status data of the controlled object different from the controlled object, thereby making it possible to appropriately use power in the entire railway system 1 according to the status of the managed object different from the controlled object. As a result, the power control device 21 can cause the railway system 1 including the train 5 and the station 3 to use power appropriately according to the status of the railway system 1.

[0127] The calculation unit 24 also calculates control parameters used to control the power of the controlled object based on a state data group including state data of the controlled object other than the controlled object. This allows the power control device 21 to achieve appropriate power usage in the railway system 1 based on the state data group acquired from the multiple managed objects.

[0128] The data acquisition unit 22 also acquires status data of external facilities 13 that are facilities outside the railway system 1 and can use power supplied from the railway system 1. The calculation unit 24 calculates control parameters used for controlling the controlled object based on the acquired status data of the external facilities 13. This enables the power control device 21 to effectively use power in the entire system including the railway system 1 and the external facilities 13.

[0129] The station equipment also includes a power supply device 9 that takes in regenerative power generated by the train 5 and supplies the power to other station equipment or an external facility 13. A data acquisition unit 22 acquires status data of the power supply device 9 that is the subject of management. A transmission processing unit 25 transmits control parameters to the power supply device 9 that is the subject of control. This enables the power control device 21 to make effective use of the regenerative power in the station equipment or the external facility 13 depending on the status of the railway system 1 or the external facility 13.

[0130] Furthermore, the data acquiring unit 22 acquires at least one of data indicating an electrical state and data indicating a physical state of the managed object as the state data, thereby enabling the power control device 21 to cause the railway system 1 to use power appropriately according to at least one of the electrical state and the physical state of the managed object.

[0131] The data acquisition unit 22 further acquires weather data for the location of the managed object as status data. The calculation unit 24 calculates control parameters to be used for controlling the controlled object based on the acquired weather data. This allows the power control device 21 to cause the railway system 1 to use power appropriately according to the weather conditions at the location of the managed object.

[0132] Furthermore, the managed objects are managed by multiple railway operators. The data acquisition unit 22 acquires status data of the managed objects managed by the multiple railway operators. The transmission processing unit 25 transmits control parameters to the managed objects managed by the multiple railway operators. This allows the power control device 21 to use power appropriately according to the situation in the railway system 1 including the managed objects managed by the multiple railway operators.

[0133] The calculation unit 24 also has a simulator 34 that simulates the power consumption of the railway system 1 based on the status data and the train schedule, and a control parameter calculation unit 35 that calculates control parameters based on the results of the simulation by the simulator 34. This allows the power control device 21 to determine control parameters for causing the railway system 1 to use power appropriately according to the situation.

[0134] Furthermore, the control parameter calculation unit 35 calculates the control parameters based on a plurality of objective functions. This enables the power control device 21 to use power in the railway system 1 in a manner that can optimize each of the plurality of objectives.

[0135] Furthermore, the control parameter calculation unit 35 adjusts the weighting of each of the multiple objective functions and calculates the control parameters based on the multiple objective functions whose weightings have been adjusted. This enables the power control device 21 to adjust the ratio of the control modes depending on the situation of the railway system 1.

[0136] Furthermore, the control parameter calculation unit 35 adjusts the weighting according to an operation that specifies the weighting of each of the multiple objective functions, thereby enabling the power control device 21 to adjust the ratio of the control modes according to any operation.

[0137] In addition, the control parameter calculation unit 35 adjusts the weighting of each of the multiple objective functions based on the state data. This allows the power control device 21 to adjust the ratio of the control modes according to the situation of the railway system 1 without requiring any operation.

[0138] The multiple objective functions include a first objective function representing the amount of carbon dioxide emissions in at least one of the railway system 1 and the external facility 13, a second objective function representing the electricity fee in at least one of the railway system 1 and the external facility 13, a third objective function representing the stability of the power system in at least one of the railway system 1 and the external facility 13, and a fourth objective function representing the deviation between the actual operation of the train 5 and the train schedule. This allows the power control device 21 to simultaneously perform control aimed at minimizing the amount of carbon dioxide emissions, control aimed at minimizing the electricity fee, control aimed at stabilizing the power system, and control aimed at minimizing the deviation between the actual operation of the train 5 and the train schedule.

[0139] Furthermore, when the state data is acquired by the data acquisition unit 22, the calculation unit 24 calculates the control parameters by performing calculations on the acquired state data. This enables the power control device 21 to use power appropriately in real time according to the state of the railway system 1.

[0140] Furthermore, the calculation unit 24 calculates the control parameters by calculating the state data for the set period, thereby enabling the power control device 21 to obtain the control parameters optimized for the set period.

[0141] The calculation unit 24 also holds time-specific control parameters, which are control parameters linked with type information indicating the time type of the set period, and selects time-specific control parameters from the held time-specific control parameters based on the type information to determine the control parameters scheduled to be transmitted by the transmission processing unit 25. This enables the power control device 21 to set a schedule indicating the schedule for transmitting the control parameters, and transmit the control parameters to the controlled object according to the schedule.

[0142] The configurations shown in the above embodiments are examples of the contents of the present disclosure. The configurations of the embodiments can be combined with other known technologies. Part of the configurations of the embodiments can be omitted or modified without departing from the gist of the present disclosure. [Explanation of symbols]

[0143] 1 railway system, 2 power supply system equipment, 3 station, 5 train, 6 substation, 7 power supply line, 8 rail, 9 power supply unit, 10 station building equipment, 11 power transmission equipment, 12 wiring, 13 external facility, 20 power control system, 21 power control device, 22 data acquisition unit, 23 data storage unit, 24,51 calculation unit, 25 transmission processing unit, 26,43 communication unit, 31 status data storage unit, 32 simulation condition storage unit, 33 control parameter storage unit, 34,52 simulator, 35,53 control parameter calculation unit, 36 transmission data creation unit, 37 transmission target determination unit, 38 transmission data output unit, 41 cloud server, 42 HMI, 44 display unit, 45 operation unit, 54 time-specific control parameter storage unit, 60 processing circuit, 61 processor, 62 memory, 63 communication device.

Claims

1. a data acquisition unit that acquires status data from at least one of a power supply system including equipment for supplying electricity to trains, the trains, and station equipment; a calculation unit that calculates a control parameter used to control power in at least one controlled object among the power supply system equipment, the electric train, and the station equipment based on the state data of the controlled object that is different from the controlled object; a transmission processing unit that transmits the calculated control parameters to the controlled object, the data acquisition unit further acquires status data of external facilities that are external to the railway system and include the power feeding system equipment and the station facilities and that can use power supplied from the railway system; The calculation unit calculates the control parameters used to control the controlled object based on the acquired state data of the external facility. A power control device characterized by:

2. The calculation unit calculates the control parameters used to control power in the controlled object based on a state data group including the state data of the managed object that is different from the controlled object.

2. The power control device according to claim 1.

3. The station facilities include a power supply device that takes in regenerative power generated by the train and supplies power to other station facilities or the external facilities, the data acquisition unit acquires the status data of the power supply device to be managed, The transmission processing unit transmits the control parameters to the power supply device that is the controlled object.

3. The power control device according to claim 1 or 2.

4. The data acquisition unit acquires, as the state data, at least one of data indicating an electrical state and data indicating a physical state of the managed object.

3. The power control device according to claim 1 or 2.

5. the data acquisition unit further acquires meteorological data of the location of the managed object as the status data, The calculation unit calculates the control parameters used to control the controlled object based on the acquired weather data.

3. The power control device according to claim 1 or 2.

6. The managed object is managed by a plurality of railway operators, the data acquisition unit acquires the status data of the managed objects managed by the plurality of railway operators, The transmission processing unit transmits the control parameters to the controlled objects managed by the plurality of railway operators.

3. The power control device according to claim 1 or 2.

7. The calculation unit a simulator that simulates power consumption of a railway system including the feeding system equipment and the station equipment based on the status data and the train operation schedule; a control parameter calculation unit that calculates the control parameters based on the results of the simulation by the simulator; 3. The power control device according to claim 1 or 2.

8. The control parameter calculation unit calculates the control parameters based on a plurality of objective functions.

8. The power control device according to claim 7.

9. The control parameter calculation unit adjusts weighting of each of the plurality of objective functions and calculates the control parameters based on the plurality of objective functions whose weightings have been adjusted.

9. The power control device according to claim 8.

10. The control parameter calculation unit adjusts the weighting in accordance with an operation of specifying the weighting of each of the plurality of objective functions. The power control device according to claim 9 .

11. The control parameter calculation unit adjusts the weighting of each of the plurality of objective functions based on the state data. The power control device according to claim 9 .

12. The calculation unit calculates the control parameter by performing calculations on the state data when the state data is acquired by the data acquisition unit.

3. The power control device according to claim 1 or 2.

13. The calculation unit calculates the control parameters by calculating the status data for a set period.

3. The power control device according to claim 1 or 2.

14. The calculation unit holds time-based control parameters, which are the control parameters linked to type information indicating a time-based type of the set period, and selects the time-based control parameter from the held time-based control parameters based on the type information, thereby determining the control parameter scheduled to be transmitted by the transmission processing unit.

14. The power control device according to claim 13.

15. A data acquisition unit that acquires status data from at least one of a power supply system including equipment for supplying electricity to trains, the trains, and station equipment, which are subject to management; a calculation unit that calculates a control parameter used to control power in at least one controlled object among the power supply system equipment, the electric train, and the station equipment based on the state data of the controlled object that is different from the controlled object; a transmission processing unit that transmits the calculated control parameters to the controlled object, The calculation unit a simulator that simulates power consumption of a railway system including the feeding system equipment and the station equipment based on the status data and the train operation schedule; a control parameter calculation unit that calculates the control parameters based on a result of the simulation by the simulator, the control parameter calculation unit calculates the control parameters based on a plurality of objective functions; The plurality of objective functions include a first objective function that represents carbon dioxide emissions in at least one of the railway system and an external facility that is an external facility of the railway system and can use power supplied from the railway system; a second objective function that represents electricity charges in at least one of the railway system and the external facility; a third objective function that represents the stability of the power grid in at least one of the railway system and the external facility; and a fourth objective function that represents a deviation between the actual operation of the train and the train schedule. A power control device characterized by:

16. Trains and Station facilities and a power supply system including equipment for supplying electricity to the electric train; a power control device including: a data acquisition unit that acquires status data of at least one of the trains, the station equipment, and the power supply system equipment to be managed; a calculation unit that calculates a control parameter used to control power in at least one of the trains, the station equipment, and the power supply system equipment to be managed based on the status data of the managed object that is different from the controlled object; and a transmission processing unit that transmits the calculated control parameter to the controlled object; the data acquisition unit further acquires status data of external facilities that are external to the railway system and include the power feeding system equipment and the station facilities and that can use power supplied from the railway system; The calculation unit calculates the control parameters used to control the controlled object based on the acquired state data of the external facility. A power control system comprising:

17. A train, Station facilities and a power supply system including equipment for supplying electricity to the electric train; a power control device including: a data acquisition unit that acquires status data of at least one of the trains, the station equipment, and the power supply system equipment to be managed; a calculation unit that calculates a control parameter used to control power in at least one of the trains, the station equipment, and the power supply system equipment to be managed based on the status data of the managed object that is different from the controlled object; and a transmission processing unit that transmits the calculated control parameter to the controlled object; The calculation unit a simulator that simulates power consumption of a railway system including the feeding system equipment and the station equipment based on the status data and the train operation schedule; a control parameter calculation unit that calculates the control parameters based on a result of the simulation by the simulator, the control parameter calculation unit calculates the control parameters based on a plurality of objective functions; The plurality of objective functions include a first objective function that represents carbon dioxide emissions in at least one of the railway system and an external facility that is an external facility of the railway system and can use power supplied from the railway system; a second objective function that represents electricity charges in at least one of the railway system and the external facility; a third objective function that represents the stability of the power grid in at least one of the railway system and the external facility; and a fourth objective function that represents a deviation between the actual operation of the train and the train schedule. A power control system comprising:

18. acquiring status data from at least one of a power supply system including equipment for supplying electricity to a train, the train, and station equipment; calculating a control parameter used to control power in at least one controlled object among the power supply system equipment, the electric train, and the station equipment based on the state data of the controlled object that is different from the controlled object; transmitting the calculated control parameters to the controlled object; the step of acquiring the status data further includes acquiring status data of external facilities that are external to the railway system and include the power feeding system equipment and the station equipment and that can use power supplied from the railway system; In the step of calculating the control parameter, the control parameter used to control the controlled object is calculated based on the acquired state data of the external facility. A power control method comprising:

19. A step of acquiring status data from at least one of a power supply system facility including a facility for supplying electricity to a train, the train, and station facilities, which are subject to management; calculating a control parameter used to control power in at least one controlled object among the power supply system equipment, the electric train, and the station equipment based on the state data of the controlled object that is different from the controlled object; transmitting the calculated control parameters to the controlled object; The step of calculating the control parameters comprises: simulating power consumption of a railway system including the feeding system equipment and the station equipment based on the status data and the train operation schedule; calculating the control parameters based on the results of the simulation; In the step of calculating the control parameters based on the results of the simulation, the control parameters are calculated based on a plurality of objective functions; The plurality of objective functions include a first objective function that represents carbon dioxide emissions in at least one of the railway system and an external facility that is an external facility of the railway system and can use power supplied from the railway system; a second objective function that represents electricity charges in at least one of the railway system and the external facility; a third objective function that represents the stability of the power grid in at least one of the railway system and the external facility; and a fourth objective function that represents a deviation between the actual operation of the train and the train schedule. A power control method comprising:

20. On the computer, acquiring status data from at least one of a power supply system including equipment for supplying electricity to a train, the train, and station equipment; calculating a control parameter used to control power in at least one controlled object among the power supply system equipment, the electric train, and the station equipment based on the state data of the controlled object that is different from the controlled object; transmitting the calculated control parameters to the controlled object; the step of acquiring the status data further includes acquiring status data of external facilities that are external to the railway system and include the power feeding system equipment and the station equipment and that can use power supplied from the railway system; In the step of calculating the control parameter, the control parameter used to control the controlled object is calculated based on the acquired state data of the external facility. A power control program comprising:

21. A computer comprising: acquiring status data from at least one of a power supply system including equipment for supplying electricity to a train, the train, and station equipment; calculating a control parameter used to control power in at least one controlled object among the power supply system equipment, the electric train, and the station equipment based on the state data of the controlled object that is different from the controlled object; transmitting the calculated control parameters to the controlled object; The step of calculating the control parameters comprises: simulating power consumption of a railway system including the feeding system equipment and the station equipment based on the status data and the train operation schedule; calculating the control parameters based on the results of the simulation; In the step of calculating the control parameters based on the results of the simulation, the control parameters are calculated based on a plurality of objective functions; The plurality of objective functions include a first objective function that represents carbon dioxide emissions in at least one of the railway system and an external facility that is an external facility of the railway system and can use power supplied from the railway system; a second objective function that represents electricity charges in at least one of the railway system and the external facility; a third objective function that represents the stability of the power grid in at least one of the railway system and the external facility; and a fourth objective function that represents a deviation between the actual operation of the train and the train schedule. A power control program comprising:

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