Power control device, power control system, power control method, and power control program

Abstract

To obtain a power control unit that enables suitable power utilization according to a situation of equipment included in a railway system.SOLUTION: A power control unit 21 comprises: a data acquisition part 22 that acquires status data from at least one managed object among an electrical feeding system including equipment for supplying electric power to an electric train, the electric train, and station equipment; a calculation part 24 that calculates control parameters for controlling electric power in at least one controlled object among the electrical feeding system, the electric train, and the station equipment on the basis of status data of a managed object different from the controlled object; and a transmission processing part 25 that transmits the calculated control parameters to the controlled object.SELECTED DRAWING: Figure 2

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 for controlling a power system.

Background Art

[0002] Conventionally, various techniques have been proposed for effectively using electric power in a railway system including trains and stations.

[0003] Patent Document 1 discloses a railway system that stores regenerative power generated by the regenerative operation of a train in a power storage device and uses the power stored in the power storage device at the train or the station. According to Patent Document 1, a power management system responsible for energy management of the railway system calculates the transition of the power consumption amount of the train and the transition of the regenerative power amount generated by the train when the train travels according to the operation schedule, thereby estimating the transition of the power storage amount in the power storage device and the transition of the discharge amount by the power storage device. Such a power management system controls the power storage device based on the results of estimating the transition of the power storage amount and the transition of the discharge amount.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When the railway system is within the scope of energy management, it is desirable to be able to appropriately use electric power throughout the railway system according to the status of the facilities included in the railway system.

[0006] The present disclosure has been made in view of the above, and an object thereof is to obtain a power control device that enables appropriate power utilization according to the status of facilities included in a railway system. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the objectives, the power control device relating to this disclosure controls at least one of the following: power supply system equipment including equipment for supplying electricity to trains, trains, and station equipment. This indicates the status of the items being sent. The system comprises a data acquisition unit that acquires state data, a calculation unit that calculates control parameters used for controlling power in at least one of the controlled objects among the power supply system equipment, trains, and station equipment, based on state data of an object other than the controlled object, and a transmission processing unit that transmits the calculated control parameters to the controlled object. The station equipment includes a charging device that supplies power to electric vehicles. The data acquisition unit acquires state data related to the charging device. The calculation unit calculates, based on at least the state data related to the charging device, A different controlled object from a charging device. Calculate the control parameters. [Effects of the Invention]

[0008] The power control device described herein has the effect of enabling appropriate power utilization according to the status of the equipment included in the railway system. [Brief explanation of the drawing]

[0009] [Figure 1] A schematic diagram showing an example of the target of energy management by the power control system according to Embodiment 1. [Figure 2] This figure shows an example configuration of the power control system according to Embodiment 1. [Figure 3] Flowchart showing an example of the operation procedure of the power control system according to Embodiment 1 [Figure 4] This figure shows an example of the configuration of the calculation unit according to a modified example of Embodiment 1. [Figure 5] This figure shows an example of timing-specific control parameters held in the calculation unit according to a modified example of Embodiment 1. [Figure 6] This figure shows an example of a schedule in which control parameters are transmitted by the transmission processing unit in a modified example of Embodiment 1. [Figure 7] A flowchart showing an example of the operating procedure by a power control system according to a modified embodiment of Embodiment 1. [Figure 8] This figure shows an example of the hardware configuration of the power control device according to Embodiment 1. [Modes for carrying out the invention]

[0010] The power control device, power control system, power control method, and power control program according to the embodiment will be described in detail below with reference to the drawings.

[0011] Embodiment 1. Figure 1 is a schematic diagram showing an example of the target of energy management by the power control system according to Embodiment 1. The power control system according to Embodiment 1 controls the power grid of the railway system 1. The railway system 1 includes electric trains 5 that operate the railway, a power supply system 2 including equipment that supplies electricity to the electric trains 5, and railway stations 3. The power control system is also responsible for energy management between the railway system 1 and external facilities 13. External facilities 13 are facilities outside the railway system 1 that can utilize the electricity supplied from the railway system 1. In Embodiment 1, energy management refers to understanding the electricity usage status of the entire system, including the railway system 1 and external facilities 13, by monitoring the electricity usage status of the railway system 1 and external facilities 13. Thus, the scope of energy management performed by the power control system includes the railway system 1 and external facilities 13.

[0012] Substation 6 is the equipment that supplies electricity to the train 5. Substation 6 is supplied with AC voltage from the commercial power grid. Substation 6 steps down the AC voltage and converts it to DC voltage. Substation 6 supplies the DC voltage to the feeder line 7. In Embodiment 1, the feeder system equipment 2 is, for example, substation 6 and feeder line 7. The number of substations 6 connected to the feeder line 7 is arbitrary. In Figure 1, the commercial power grid is not shown.

[0013] A plurality of trains 5 running on the railway travel on the rails 8. Each train 5 is powered by being supplied with power from the overhead wire 7. In FIG. 1, one of the plurality of trains 5 traveling on the rails 8 is shown. Each train 5 generates regenerative power by means of a regenerative operation. For example, when regenerative power is generated in a certain train 5, a train 5 traveling near that train 5 can utilize that regenerative power for power running or driving vehicle equipment. The vehicle equipment is electrical equipment installed in the train 5, such as an air-conditioning device or a lighting device. The regenerative power that becomes surplus in the overhead power system equipment 2 is recovered by the power supply device 9 installed at the station 3.

[0014] The railway system 1 includes a plurality of stations 3 installed on the railway line. In FIG. 1, one of the plurality of stations 3 installed on the railway line is shown. At the station 3, a power supply device 9, a plurality of station building facilities 10, and power transmission equipment 11 are installed. Each of the power supply device 9, the plurality of station building facilities 10, and the power transmission equipment 11 is equipment installed at the railway station 3. In Embodiment 1, each of these facilities installed at the railway station 3 is referred to as station equipment. Note that in FIG. 1, one of the plurality of station building facilities 10 is shown.

[0015] Each of the plurality of station building facilities 10 is electrical equipment installed in the station building. Examples of the station building facilities 10 are an air-conditioning device, a lighting device, an automatic ticket gate, a bulletin board, signage, or an elevator, etc. Each of the power supply device 9, the plurality of station building facilities 10, and the power transmission equipment 11 is connected to each other via wiring 12.

[0016] The power supply device 9 takes in the 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 the plurality of station building facilities 10 and the power transmission equipment 11 according to the control by the power control system. The power transmission equipment 11 sends the power supplied by the power supply device 9 to the external facility 13. The power supply device 9 takes in the regenerative power generated by the train 5 and supplies power to each of the station equipment and the external facility 13.

[0017] In addition, a solar power generation device, which is station equipment, may be installed at Station 3. The solar power generation device supplies power to at least one of the plurality of station building facilities 10 and the power transmission facility 11 in accordance with the control by the power control system. The power transmission facility 11 sends the power supplied by the solar power generation device to the external facility 13. The power transmission facility 11 may supply power to the 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 station equipment, 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 in accordance with the control by the 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 driven by the power sent from the power transmission facility 11 is installed in the external facility 13. Such electrical equipment includes an air conditioner, a lighting fixture, an elevator, or household electrical appliances. Note that the number of external facilities 13 connected to the power transmission facility 11 is assumed to be arbitrary.

[0020] In Embodiment 1, the management of the power usage situation in the external facility 13 is performed by the power control system. On the other hand, it is assumed that the power control system is not involved in the control related to the power usage in the external facility 13. The control related to the power usage in the external facility 13 is independently executed in the external facility 13. Thus, it is assumed that the external facility 13 falls within the scope of the object whose power usage situation is managed by the power control system and does not fall within the scope of the object controlled by the power control system. Note that among the external facilities 13 whose power usage situation is managed by the power control system, there may be facilities that fall within the scope of the object controlled by the power control system.

[0021] Next, the configuration of the power control system will be described. Figure 2 is a diagram showing an example configuration of the power control system 20 according to Embodiment 1. The power control system 20 comprises multiple trains 5, station equipment, power supply system equipment 2, and a power control device 21. The power control device 21 is installed, for example, in the train control center of the railway system 1. The dispatcher at the train control center monitors the operating status of the trains 5 and gives work instructions to the train crew or station staff. Note that in Figure 2, the multiple trains 5, station equipment, and power supply system equipment 2 are not shown.

[0022] In Embodiment 1, the managed entity is defined as the entity whose power usage is managed by the power control device 21. The power control device 21 monitors the status of the managed entity. Each train 5, each substation 6 of the power supply system equipment 2, each station equipment, and each external facility 13 are managed entities. Figure 2 shows one of the multiple managed entities. Each managed entity transmits status data to the power control device 21. The power control device 21 acquires the status data for each managed entity. Based on the acquired status data, the power control device 21 monitors the power usage status in the railway system 1 and the external facility 13. The status data includes at least one of data indicating the electrical status of the managed entity and data indicating the physical status of the managed entity. Details of the status data will be described later.

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

[0024] Each of the multiple managed devices that transmit 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 Embodiment 1, the network is, for example, a WAN (Wide Area Network) such as the Internet, but it 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, for example, be provided on the power control device 21.

[0026] The power control device 21 includes a data acquisition unit 22, a data holding unit 23, a calculation unit 24, a transmission processing unit 25, and a communication unit 26.

[0027] The communication unit 26 is an interface for sending and receiving information and communicates with devices outside the power control device 21. In the example shown in Figure 2, the communication unit 26 communicates with each of the multiple managed devices, the cloud server 41, and the HMI 42. The communication unit 26 also communicates with the controlled object described later. The communication unit 26 is, for example, a LAN terminal, which is a wired network terminal, but is not limited to this, and wireless communication may be performed using a wireless LAN method.

[0028] The communication unit 26 receives status data transmitted from each of the multiple managed objects. If status data for some of the multiple managed objects is stored in the cloud server 41, the data acquisition unit 22 receives 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 the status data of at least one of the managed objects from 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 object. The data acquisition unit 22 outputs the acquired status data to the data storage unit 23.

[0029] The communication unit 26 receives 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 that indicates the conditions for the simulation to be executed by the 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 way, the data holding unit 23 holds state data and simulation condition information acquired by the data acquisition unit 22.

[0031] The simulation condition information includes vehicle characteristics information, operating schedule information, route information, and substation characteristics information. Vehicle characteristics information is information that shows the characteristics of each of the multiple trains 5. Operating schedule information is information that shows the operating schedule for each of the multiple trains 5. Route information is information that shows the railway line on which each of the multiple trains 5 operates. Route information includes information on the operating system, which is the specific route each train 5 takes. Substation characteristics information is information that shows the characteristics of substation 6.

[0032] Note that the vehicle characteristics information, operating schedule information, route information, and substation characteristics information are examples of information included in the simulation conditions information. The simulation conditions information does not need to include one or more of the vehicle characteristics information, operating schedule information, route information, and substation characteristics information. The simulation conditions information may also include information other than vehicle characteristics information, operating schedule information, route information, and substation characteristics information.

[0033] The data storage unit 23 receives the control parameters calculated by the calculation unit 24. The control parameter storage unit 33 stores the simulation condition information input to the data storage unit 23. In this way, the data storage unit 23 stores the control parameters calculated by the calculation unit 24.

[0034] The calculation unit 24 calculates control parameters used for controlling the power utilization of the railway system 1 by calculating the state data acquired by the data acquisition unit 22. The calculation unit 24 calculates control parameters used for controlling the power of at least one of the controlled objects among the power supply system equipment 2, the train 5, and the station equipment, based on state data of an object to be managed that is different from the controlled object. In Embodiment 1, the controlled object is the object on which power control is performed 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 state data and the operating schedule of the train 5. The simulations performed by the simulator 34 are the operation simulation and the 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 holding unit 33. The control parameters calculated by the control parameter calculation unit 35 are held in the control parameter holding unit 33.

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

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

[0038] Furthermore, the simulator 34 performs a power simulation based on the read state data, the results 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 performs a power simulation when train 5 is operated according to the results of the operation simulation. The simulator 34 outputs the results of the power simulation to the control parameter calculation unit 35. The simulator 34 also outputs the results of the power simulation to the communication unit 26. The communication unit 26 transmits the results of the power simulation to the HMI 42.

[0039] The control parameter calculation unit 35 calculates control parameters based on the results of the power simulation. In doing so, the control parameter calculation unit 35 calculates control parameters based on multiple objective functions that represent different objectives. The control parameter calculation unit 35 calculates control parameters that optimize each of the multiple objective functions. Here, we assume that there are four objective functions.

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

[0041] The second of the four objective functions represents the electricity charges for at least one of the railway system 1 and the external facilities 13. The objective expressed by the second objective function is to minimize the electricity charges for the entire system, including the railway system 1 and the external facilities 13. Here, minimizing the electricity charges for the entire system means minimizing the total amount of electricity charges for each of the facilities in the entire system that are subject to electricity charges.

[0042] The third of the four objective functions represents the stability of the power system in at least one of the railway system 1 and the external facilities 13. The objective expressed by the third objective function is to stabilize the power system in the railway system 1 and the external facilities 13. Power system stabilization includes, for example, mitigating sudden changes in power flow in the event of weather changes.

[0043] The fourth of the four objective functions represents the discrepancy between the actual operation of train 5 and the scheduled timetable. The objective expressed by the fourth objective function is to minimize the discrepancy between the actual operation of train 5 and the scheduled timetable.

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

[0045] Here, for each of the multiple objective functions, the coefficient representing the weight is ω. k Let k be an integer from 1 to m. m represents the number of objective functions. The control parameter calculation unit 35 calculates each coefficient ω1,···,ω m Adjust the following. In the example above, 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 We seek the x value at which the sum F(x), which is the sum of (x), is smallest or largest. F(x) is expressed by the following equation (1). F(x)=ω1×F1(x)+ω2×F2(x)+ω3×F3(x)+ω4×F4(x) ...(1)

[0048] In this way, the control parameter calculation unit 35 calculates control parameters based on multiple objective functions, each with adjusted weights.

[0049] Here, the first control mode is defined as the control method used when controlling the railway system 1 solely for the purpose of minimizing carbon dioxide emissions in the entire system, including the railway system 1 and external facilities 13. The second control mode is defined as the control method used when controlling the railway system 1 solely for the purpose of minimizing electricity costs in the entire system, including the railway system 1 and external facilities 13. The third control mode is defined as the control method used when controlling the railway system 1 solely for the purpose of stabilizing the power grid in the railway system 1 and external facilities 13. The fourth control mode is defined as the control method used when controlling the railway system 1 solely for the purpose of minimizing the discrepancy between the actual operation of the train 5 and the operating schedule. Adjusting each coefficient, which is an element 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 explanation, adjusting the proportion of control modes refers to adjusting the weighting for each of the multiple objective functions. The proportion of control modes represents the distribution of each coefficient in the set of coefficients [ω1, ω2, ω3, ω4]. Hereafter, the set of coefficients [ω1, ω2, ω3, ω4] will be referred to as mode ratio information.

[0050] The HMI42 comprises a communication unit 43, a display unit 44 for displaying information, and an operation unit 45 for receiving operations for information input. The communication unit 43 communicates with external devices of the HMI42. In the example shown in Figure 2, the communication unit 43 communicates with the power control device 21.

[0051] The communication unit 43 receives 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 also receive control parameters calculated by the control parameter calculation unit 35 at the communication unit 43 and display the status of 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 dispatcher engaged in monitoring and control operations at the operation control center of the railway system 1. The operation unit 45 accepts operations to specify the proportion of control modes. That is, the operation unit 45 accepts operations to specify the weighting of each of the multiple objective functions. The communication unit 43 transmits the input information input to the HMI 42 by the operation of 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 proportion 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 of 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 target determination unit 37, and a transmission data output unit 38.

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

[0055] The transmission target determination unit 37 determines the controlled object to which the transmission data is to be transmitted, based on the transmission data. The transmission target determination unit 37 outputs the transmission data, to which information indicating the determined controlled object is associated, 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 object indicated by the information associated with the transmission data. In Figure 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 object.

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

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

[0058] Examples of physical data for train 5 include the weight of the vehicles that make up train 5, the location of train 5, the speed of train 5, the number of passengers on train 5, the total weight of passengers on train 5, or the elevation of the location of train 5. The power control device 21 monitors the status of train 5 and the power usage of train 5 by acquiring status data of train 5. In addition, the physical data of train 5 may include data showing the operational history of train 5. Examples of data showing operational history include the time when train 5 departed from station 3, the time when train 5 arrived at station 3, the time train 5 traveled between stations, or the time train 5 stopped at station 3.

[0059] The data acquisition unit 22 acquires electrical data from the substation 6, which is part of the power supply system equipment 2. Examples of electrical data from the substation 6 include data on the current, voltage, power, or energy output from the substation 6 to the power supply line 7, or the tap values ​​of the transformers installed in the substation 6. The power control device 21 monitors the status of power supply from the substation 6 to the power supply line 7 by acquiring status data from the substation 6. Examples of physical data from the substation 6 include data on the number of rectifiers installed in the substation 6 that are in operation.

[0060] The data acquisition unit 22 acquires electrical data and physical data of the station equipment. Examples of electrical data for the power supply unit 9, which is part of the station equipment, include data on the power taken into the power supply unit 9, data on the power output from the power supply unit 9, or regenerative braking determination index values. The regenerative braking determination index value is an index value used to determine whether or not the train 5 is performing regenerative braking.

[0061] Examples of electrical data for station facilities 10 include data on voltage, current, power, or energy supplied to station facilities 10, or data on the power factor of station facilities 10. Examples of physical data for station facilities 10 include data on the number of people who have passed through the automatic ticket gates. Examples of electrical data for solar power generation equipment, which is station facilities, include data on the amount of power generated. Examples of electrical data for EV charging equipment, which is station facilities, include data on the power or energy output from the EV charging equipment to EVs. Examples of physical data for EV charging equipment, which is station facilities, include data on the number of EVs connected to the EV charging equipment, or the number of EVs waiting to be charged. Examples of electrical data for power transmission equipment 11, which is station facilities, include data on the power or energy sent from power transmission equipment 11 to external facilities 13. The power control device 21 monitors the status of power supply from power transmission equipment 11 to external facilities 13 by acquiring status data of power transmission equipment 11.

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

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

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

[0065] When train 5 operates across lines managed by multiple railway operators, transformers may be installed at the boundary points of the areas managed by each railway operator, and electrical data may be acquired by these transformers. Examples of electrical data when train 5 operates across lines managed by multiple railway operators include voltage, or data such as current flowing in or out between multiple railway operators. Examples of physical data when train 5 operates across lines managed by multiple railway operators include data such as the number of trains 5 in operation.

[0066] When trains 5 operated by multiple railway operators run on a common line, the data acquisition unit 22 acquires simulation condition information for trains 5 operated by each railway operator, which includes vehicle characteristics information, operating schedule information, and route information. The simulation condition information for trains 5 operated by each railway operator is provided by each railway operator.

[0067] In Embodiment 1, the railway system 1 may consist of lines where only one railway operator's trains 5 are operated. The railway system 1 may also include lines where only one railway operator's trains 5 are operated, and lines where trains 5 from multiple railway operators are operated.

[0068] The status data acquired by the data acquisition unit 22 includes weather data for the location of the controlled object. The weather data includes data indicating the weather or temperature at the location where the controlled object is installed. Weather data for the location where the controlled object is installed is included in the status data for that controlled object. Weather data is acquired, for example, from a weather data distribution company. When weather data is acquired by the data acquisition unit 22, the calculation unit 24 calculates the control parameters used for controlling the controlled object based on the acquired weather data. The status data acquired by the power control device 21 is not limited to the above data, but may include any data relating to the status of the controlled object.

[0069] Next, we will describe examples of control parameters output by the transmission processing unit 25. Here, we will describe five examples of control parameters output by the transmission processing unit 25.

[0070] The first example of control parameters is a control parameter for controlling the voltage output from the substation 6 to the feeder line 7. The transmission processing unit 25 transmits the control parameters of the first example to the substation 6. The control parameters of the first example include parameters for changing the tap values ​​of the transformers installed in the substation 6, or parameters for changing the number of rectifiers to be operated. By controlling the substation 6 with the control parameters of the first example, the regenerative power that can be shared between trains 5 can be increased, and the regenerative power can be used effectively. As a result, the power control device 21 can reduce the power consumption caused by the operation of trains 5.

[0071] A second example of control parameters is a control parameter for controlling the power intake from the feeder line 7 by the power supply unit 9. The transmission processing unit 25 transmits the control parameters of the second example to the power supply unit 9. The control parameters of the second example include regenerative judgment index values, etc. By controlling the power supply unit 9 with the control parameters of the second example, the loss of regenerative power can be reduced. As a result, the power control device 21 can reduce the power consumption in the railway system 1.

[0072] A third example of control parameters is a control parameter for controlling train 5. The transmission processing unit 25 transmits the control parameters of the third example to train 5. The control parameters of the third example include parameters for adjusting instructions issued from the train control center to the driver of train 5. Settings of operations shown on the operation support screen of train 5, or changes to the run curve, are performed based on these parameters. The control parameters of the third example also include parameters for controlling the vehicle equipment of train 5. Controlling train 5 with the control parameters of the third example makes it possible to promote power saving of train 5. Alternatively, by adjusting the running of train 5 with the control parameters of the third example, it is possible to reduce the discrepancy between the actual operation of train 5 and the operating schedule.

[0073] The fourth example of control parameters is a control parameter for controlling the flow of people at station 3 or train 5. The control parameters of the fourth example include parameters for setting the content of the guidance presented to people at station 3 or passengers on train 5. This guidance is displayed on bulletin boards installed in the waiting room of station 3, on train vision displays, or on mobile devices carried by people at station 3 or passengers on train 5. Controlling the flow of people using the control parameters of the fourth example can reduce the workload of station staff. Alternatively, controlling the flow of people using the control parameters of the fourth example can alleviate congestion at station 3 or train 5, thereby improving the quality of life (QOL) of people at station 3 or passengers on train 5. Reducing congestion on train 5 will decrease the number of passengers on train 5, which will reduce the weight of train 5 and thus reduce the power consumption when train 5 is accelerating. Furthermore, with fewer passengers on train 5, comfort inside the train can be maintained even with reduced air conditioning intensity, thus reducing the power consumption of train 5.

[0074] The fifth example of control parameters concerns the control of station equipment. The control parameters of the fifth example include parameters for controlling the charging of power supply unit 9, parameters for controlling the power supply from power supply unit 9 to EV charging equipment or power transmission equipment 11, or parameters for controlling the power supply from solar power generation equipment to power supply unit 9 or power transmission equipment 11. The control parameters of the fifth example also include parameters for delivering guidance to EV users to encourage charging using EV charging equipment. By promoting EV charging by users who receive this guidance, the efficient use of electricity stored in power supply unit 9 or electricity generated by solar power generation equipment is promoted. The control of station equipment using the control parameters of the fifth example enables the efficient use of electricity. Alternatively, the control of station equipment using the control parameters of the fifth example makes it possible to mitigate sudden changes in power flow.

[0075] When trains 5 operated by multiple railway operators run on a common line, each train 5 operated by each railway operator is a controlled object. The transmission processing unit 25 transmits control parameters to each train 5 operated by each railway 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. However, the control parameter calculation unit 35 may also set the mode ratio information based on the state data acquired by the data acquisition unit 22, without relying on the operation of the operation unit 45. For example, suppose the control parameter calculation unit 35 determines from data showing the operation record of train 5 that the deviation between the actual operation of train 5 and the operation schedule exceeds a certain standard. In this case, the control parameter calculation unit 35 increases the weighting of the fourth objective function compared to the case where there is no deviation. Also, if the control parameter calculation unit 35 determines from weather data that the weather has changed suddenly, it increases the weighting of the third objective function compared to the case where there is no change in weather. In this way, the power control device 21 selects the most appropriate ratio for each control mode in light 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 changes in the situation.

[0077] Furthermore, the mode ratio information set in the control parameter calculation unit 35 may reflect the interaction between the control effects of each of the multiple control modes. For example, if there is a control mode that is given first priority among the multiple control modes, the control mode that is given second priority after the first priority control mode will be a control mode that has an interaction with the first priority control mode. This allows the control parameter calculation unit 35 to calculate control parameters that take into account the interactions between the control modes.

[0078] Next, we will describe examples of simulation and control parameter calculation methods. Here, we will describe two methods as examples of simulation and control parameter calculation.

[0079] In the first method of simulation and control parameter calculation, the calculation unit 24 acquires state data input to the power control device 21 in real time 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 control parameters by performing calculations on the acquired state data.

[0080] The data acquisition unit 22 acquires state data from multiple managed objects and stores the state data group, which consists of the state data from multiple 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 multiple managed objects. The calculation unit 24 calculates control parameters used for controlling the power of the controlled object based on the state data group, which includes state data from objects other than the controlled object. The state data group may also be a group of state data acquired simultaneously from multiple managed objects. In the first method, once the state data group is stored in the state data storage unit 31, the calculation unit 24 reads the state data group from the state data storage unit 31. The simulator 34 performs 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 operations or state data to the operation unit 45 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 weightings. The control parameter calculation unit 35 outputs a group of control parameters, which are control parameters for multiple controlled objects.

[0082] Figure 3 is a flowchart illustrating an example of the operation procedure of the power control system 20 according to Embodiment 1. Figure 3 shows an example of the operation procedure of the power control device 21 when simulation and control parameter calculation are performed by the first method in the calculation unit 24.

[0083] In step S1, the data acquisition unit 22 acquires the status data of the managed object. The data acquisition unit 22 stores the multiple groups of status data of the managed object in the status data holding unit 31.

[0084] In step S2, the control parameter calculation unit 35 sets the mode ratio information. The control parameter calculation unit 35 sets the mode ratio information according to the information input by the operation of 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 a set of state data from the state data holding unit 31. The simulator 34 reads simulation condition information from the simulation condition holding unit 32. In step S3, the simulator 34 performs an operation simulation based on the set of state data and the operation schedule information and route information from the simulation condition information.

[0086] In step S4, the simulator 34 performs a power simulation based on the results of the operation simulation in step S3, the state data set, and the vehicle characteristics information and substation characteristics information from 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 results 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 control parameters. In step S6, the transmission data output unit 38 outputs the transmission data including control parameters to the communication unit 26. The communication unit 26 transmits the transmission data including control parameters to the controlled object. With this, the power control device 21 completes the operation according to the procedure shown in Figure 3. The power control device 21 acquires multiple status data of controlled objects as needed and executes the operation according to the procedure shown in Figure 3.

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

[0090] Next, a second method for simulation and control parameter calculation will be described. Simulation and control parameter calculation by the second method are realized by a modified calculation unit. Figure 4 is a diagram showing an example of the configuration of the calculation unit 51 according to a modified example of Embodiment 1. The calculation unit 51 comprises a simulator 52, a control parameter calculation unit 53, and a time-specific control parameter holding unit 54. Figure 4 also shows an HMI 42 that exchanges information with the calculation unit 51 via a communication unit 26. In Figure 4, the communication unit 26 is not shown.

[0091] In the second method, the power control device 21 stores the state data acquired by the data acquisition unit 22 in the data storage unit 23. The calculation unit 51 acquires the state data collected in the data storage unit 23 all at once and performs simulation and control parameter calculation for the state data for a set period. In the second method, the calculation unit 51 performs simulation and control parameter calculation using so-called batch processing.

[0092] The data acquisition unit 22 acquires status data for each of the multiple managed entities and stores the status data group, which is the status data for the multiple managed entities, in the status data storage unit 31. In the second method, the acquisition of status data by the data acquisition unit 22 and the storage of the status data group in the status data storage unit 31 are repeated as needed, and the status data group is accumulated in the data storage unit 23.

[0093] The calculation unit 51 reads the state data set stored in the state data holding unit 31 at a predetermined date and time. For example, the calculation unit 51 reads a day's worth of state data at a predetermined time during the night. In this case, the calculation unit 51 acquires the state data set with a one-day cycle. The cycle for which the calculation unit 51 acquires the state data set is arbitrary. The cycle may be shorter or longer than one day.

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

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

[0096] The control parameter group input to the period-specific control parameter storage unit 54 is assigned type information indicating the period type for the set period. The control parameter group is stored in the period-specific control parameter storage unit 54 with the type information associated with it. The calculation unit 51 stores the period-specific control parameters, which are control parameters with associated type information, in the period-specific control parameter storage unit 54. The period-specific control parameter storage unit 54 stores multiple control parameter groups, each associated with type information of different content.

[0097] Figure 5 shows an example of time-specific control parameters held in the calculation unit 51 according to a modified example of Embodiment 1. In Figure 5, the control parameters, which are time-specific control parameters, and the type information associated with those control parameters are shown as tabular data. In addition, in the example shown in Figure 5, the control parameters are associated with mode ratio information, which indicates the proportion of the control mode applied when the control parameters were calculated, along with the type information.

[0098] In the example shown in Figure 5, the set period is classified by three elements: "Day Type" representing weekdays and holidays, "Season Type" representing the season, and "Time Zone." The type information includes information on "Day Type," "Season Type," and "Time Zone."

[0099] For example, suppose a set of control parameters, "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 associated with "Control Parameter Group A" includes information such as "Day Type [Weekday]", "Season Type [Summer]", and "Time Zone [6:00-7:00]" indicating the type of that period. In addition, in the example shown in Figure 5, "Control Parameter Group A" is associated with "Pattern A" along with the type information. "Pattern A" is mode ratio information that indicates the proportion of control modes applied when "Control Parameter Group A" was calculated.

[0100] In Figure 5, "Control Parameter Group A" and "Control Parameter Group B" are examples of period-specific control parameters stored in the period-specific control parameter storage unit 54. "Control Parameter Group B" is a group of control parameters calculated based on state data for the period from 7:00 to 8:00 on a weekday in summer. In this case, the type information associated with "Control Parameter Group B" includes information such as "Day Type [Weekday]", "Season Type [Summer]", and "Time Zone [7:00-8:00]", which indicate the type of the period. In the example shown in Figure 5, the percentage of control modes applied when "Control Parameter Group B" was calculated is the same as the percentage of control modes applied when "Control Parameter Group A" was calculated. Along with the type information, "Pattern A", which is mode percentage information, is associated with "Control Parameter Group B". In this way, period-specific control parameters stored in the period-specific control parameter storage unit 54 are associated with type information corresponding to the set period and mode percentage information corresponding to the percentage of control modes.

[0101] When the controlled object is being controlled, the control parameter calculation unit 53 searches the time-specific control parameter storage unit 54 for time-specific control parameters associated with type information that applies to the time period in which the control is being performed. The control parameter calculation unit 53 identifies time-specific control parameters associated with type information that applies to the time period in which the control is being performed through the search and reads out the identified time-specific control parameters. The control parameter calculation unit 53 also determines whether there are any time-specific control parameters among the read-out time-specific control parameters whose mode ratio information associated with the time-specific control parameter is the same as the mode ratio information set when the controlled object is being controlled.

[0102] If, among the retrieved period-specific control parameters, there is a period-specific control parameter whose associated mode ratio information is the same as the set mode ratio information, the control parameter calculation unit 53 selects that period-specific control parameter. If, among the retrieved period-specific control parameters, there is no period-specific control parameter whose associated mode ratio information matches the set mode ratio information, the control parameter calculation unit 53 performs the search again in the period-specific control parameter storage unit 54. The control parameter calculation unit 53 searches the period-specific control parameter storage unit 54 for a period-specific control parameter to which type information is closest to the period in which control is performed and the period-specific conditions, and whose associated mode ratio information matches the set mode ratio information. The control parameter calculation unit 53 selects the period-specific control parameter identified by the search.

[0103] In this way, the control parameter calculation unit 53 selects a time-specific control parameter from the time-specific control parameters held in the time-specific control parameter holding unit 54 based on type information and mode ratio information. By selecting the time-specific control parameter based on the type information and mode ratio information, the control parameter calculation unit 53 determines the control parameter that is scheduled to be transmitted by the transmission processing unit 25. The control parameter calculation unit 53 outputs the determined control parameter to the control parameter holding unit 33.

[0104] The control parameter holding unit 33 holds the control parameters input to the control parameter holding unit 33 as a schedule indicating when the control parameters are scheduled to be transmitted. The transmission data creation unit 36 ​​reads the control parameters held as a schedule from the control parameter holding unit 33. The transmission data output unit 38 outputs the transmission data, including the control parameters, according to the schedule.

[0105] Figure 6 shows an example of a schedule in which control parameters are transmitted by the transmission processing unit 25 in a modified version of Embodiment 1. In Figure 6, the control parameters and the days and times in which the control parameters are transmitted are shown as tabular data. Here, it is assumed that the mode ratio information associated with the time-specific control parameters is the same as the mode ratio information set when the controlled object is controlled.

[0106] Figure 6 shows an example of 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" shown in Figure 5 is the type information that applies 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 parameter to be applied to the control from 6:00 to 7:00 on "August Y, XXXX". The type information associated with "Control Parameter Group B" shown in Figure 5 is the type information that applies 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 parameter to be applied to the control from 7:00 to 8:00 on "August Y, XXXX".

[0107] The control parameter holding unit 33 holds "Control Parameter Group A," which is linked to the information of the day, "August Y, Year XXXX," and the time period, "6:00-7:00." It also holds "Control Parameter Group B," which is linked to the information of the day, "August Y, Year XXXX," and the time period, "7:00-8:00." In this way, the control parameter holding unit 33 holds the control parameters as a schedule indicating when those control parameters are scheduled to be transmitted.

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

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

[0110] In step S12, the simulator 52 performs an operation simulation and a power simulation. The simulator 52 performs an operation simulation based on the state data set and the operation schedule information and route information from the simulation condition information. The simulator 52 performs a power simulation based on the results of the operation simulation, the state data set, and the vehicle characteristics information and substation characteristics information from the simulation condition information. The simulator 52 performs operation simulations and power simulations for each set period.

[0111] The control parameter calculation unit 53 sets the mode ratio information according to the information input by the operation of the operation unit 45. Alternatively, the control parameter calculation unit 53 sets the mode ratio information based on the state data read in step S11. In step S13, the control parameter calculation unit 53 calculates the control parameters based on the set mode ratio information and the results 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 associated with type information, in the time-specific control parameter storage unit 54. Through steps S11 to S14, time-specific control parameters are accumulated in the time-specific control parameter storage unit 54.

[0113] Steps S15 and S16 describe the operation when the controlled object is controlled. In step S15, the control parameter calculation unit 53 determines the control parameters to be transmitted by selecting time-specific control parameters. The control parameter calculation unit 53 identifies time-specific control parameters associated with type information that corresponds to the time when control is performed, and reads out the identified time-specific control parameters.

[0114] If, among the retrieved period-specific control parameters, there is a period-specific control parameter whose associated mode ratio information is the same as the mode ratio information set when the controlled object is being controlled, the control parameter calculation unit 53 selects that period-specific control parameter.

[0115] If, among the retrieved periodic control parameters, there is no periodic control parameter whose associated mode ratio information matches the set mode ratio information, the control parameter calculation unit 53 performs another search in the periodic control parameter storage unit 54. The control parameter calculation unit 53 searches the periodic control parameter storage unit 54 for a periodic control parameter to which the type information closest to the period and conditions under which control is performed is associated, and whose associated mode ratio information matches the set mode ratio information. The control parameter calculation unit 53 selects the periodic control parameter identified by the search.

[0116] The control parameter calculation unit 53 determines the control parameters scheduled for transmission by selecting time-specific control parameters based on type information and mode ratio information. The control parameter holding unit 33 holds the control parameters determined by the control parameter calculation unit 53 as a schedule indicating when those control parameters are scheduled to be transmitted.

[0117] In step S16, the transmission data output unit 38 outputs transmission data including control parameters according to the schedule held in the control parameter holding unit 33. That is, the transmission data output unit 38 transmits transmission data including control parameters to the controlled object according to the schedule held in the control parameter holding unit 33. With this, the power control device 21 completes its operation according to the procedure shown in Figure 7.

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

[0119] Next, the hardware configuration of the power control device 21 according to Embodiment 1 will be described. Figure 8 is a diagram showing an example of the hardware configuration of the power control device 21 according to Embodiment 1. The power control device 21 is implemented by a computer system comprising a processing circuit 60 and a communication device 63. The processing circuit 60 comprises a processor 61 and a memory 62. The processing circuit 60 is a circuit in which the processor 61 executes software.

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

[0121] The processor 61 is a CPU (Central Processing Unit, also known as a processing unit, arithmetic unit, microprocessor, microcomputer, processor, or DSP (Digital Signal Processor)). The memory 62 includes, for example, non-volatile or volatile semiconductor memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Registered Trademark) (Electrically Erasable Programmable Read Only Memory), magnetic disks, flexible disks, optical disks, compact disks, minidiscs, or DVDs (Digital Versatile Discs). The data holding unit 23 of the power control device 21 is implemented by the memory 62.

[0122] The communication device 63 communicates with external devices of the power control device 21. The communication unit 26 of the power control device 21 is implemented by the communication device 63. The communication device 63 receives status data of the device under control. The communication device 63 transmits transmission data, including control parameters, to the device under control.

[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 on a recording medium such as a CD (Compact Disc)-ROM or DVD-ROM, and a recording medium may be provided to realize the power control system 20.

[0124] In the above, the power control system 20 is assumed to be implemented using a power control device 21. The power control system 20 may consist of 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 the processing circuit 60 and communication device 63 shown in Figure 8. Communication between the two or more devices is performed by the communication device 63.

[0125] The HMI42 has a hardware configuration similar to that shown in Figure 8. The communication unit 43 of the HMI42 is implemented with a configuration similar to that of the communication device 63. The HMI42 also includes an input device, which is a device for input, and a monitor for displaying the screen. The input device includes, for example, a keyboard, mouse, keypad, or touch panel. The operation unit 45 is implemented 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 implemented by the monitor.

[0126] According to Embodiment 1, the power control device 21 includes a data acquisition unit 22 that acquires state data from at least one of the power supply system equipment 2, the train 5, and the station equipment; a calculation unit 24 that calculates control parameters used for controlling the power in at least one of the power supply system equipment 2, the train 5, and the station equipment based on state data of a different controlled object; and a transmission processing unit 25 that transmits the calculated control parameters to the controlled object. By calculating control parameters based on state data of a different controlled object, the power control device 21 can ensure appropriate power utilization throughout the railway system 1 according to the status of a different controlled object. As a result, the power control device 21 can ensure appropriate power utilization in the railway system 1, including the train 5 and the station 3, according to the status of the railway system 1.

[0127] Furthermore, the calculation unit 24 calculates control parameters used for controlling the power of the controlled object based on a set of state data that includes state data of objects other than the controlled object. As a result, the power control device 21 can ensure appropriate power utilization in the railway system 1 based on the set of state data acquired from multiple objects.

[0128] Furthermore, the data acquisition unit 22 acquires status data of external facilities 13 that are facilities outside the railway system 1 and can utilize the power supplied by 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. As a result, the power control device 21 can effectively utilize power in the entire system, including the railway system 1 and the external facilities 13.

[0129] Furthermore, the station equipment includes a power supply unit 9 that takes in regenerative power generated by the train 5 and supplies power to other station equipment or external facilities 13. The data acquisition unit 22 acquires status data of the power supply unit 9, which is the object of management. The transmission processing unit 25 transmits control parameters to the power supply unit 9, which is the object of management. As a result, the power control device 21 can make the regenerative power effectively utilized in the station equipment or external facilities 13 according to the status of the railway system 1 or external facilities 13.

[0130] Furthermore, the data acquisition unit 22 acquires at least one of the following as state data: data indicating the electrical state of the managed object and data indicating the physical state. This allows 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 physical state of the managed object.

[0131] Furthermore, the data acquisition unit 22 acquires weather data of the location under management as state data. The calculation unit 24 calculates control parameters to be used for controlling the object under management based on the acquired weather data. As a result, the power control device 21 can cause the railway system 1 to use power appropriately according to the weather conditions at the location under management.

[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 multiple railway operators. The transmission processing unit 25 transmits control parameters to the managed objects managed by multiple railway operators. As a result, the power control device 21 can ensure appropriate power utilization according to the situation in the railway system 1, which includes managed objects managed by multiple railway operators.

[0133] Furthermore, the calculation unit 24 includes a simulator 34 that simulates the power consumption of the railway system 1 based on state data and the operating schedule, and a control parameter calculation unit 35 that calculates control parameters based on the results of the simulation by the simulator 34. As a result, the power control device 21 can determine control parameters to cause the railway system 1 to use power appropriately according to the situation.

[0134] Furthermore, the control parameter calculation unit 35 calculates control parameters based on multiple objective functions. This allows the power control device 21 to optimize power utilization in the railway system 1, thereby optimizing each of the multiple objectives.

[0135] Furthermore, the control parameter calculation unit 35 adjusts the weighting of each of the multiple objective functions and calculates control parameters based on the multiple objective functions with their respective weights adjusted. This allows the power control device 21 to adjust the proportion of control modes according to the conditions of the railway system 1.

[0136] Furthermore, the control parameter calculation unit 35 adjusts the weights according to the operation of specifying the weights for each of the multiple objective functions. This allows the power control device 21 to adjust the proportion of control modes according to any operation.

[0137] Furthermore, 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 proportion of control modes according to the status of the railway system 1 without requiring any operation.

[0138] Furthermore, the multiple objective functions include a first objective function representing carbon dioxide emissions in at least one of the railway system 1 and external facilities 13, a second objective function representing electricity costs in at least one of the railway system 1 and external facilities 13, a third objective function representing the stability of the power grid in at least one of the railway system 1 and external facilities 13, and a fourth objective function representing the discrepancy between the actual operation of train 5 and the scheduled operating timetable. As a result, the power control device 21 can simultaneously perform control aimed at minimizing carbon dioxide emissions, control aimed at minimizing electricity costs, control aimed at stabilizing the power grid, and control aimed at minimizing the discrepancy between the actual operation of train 5 and the scheduled operating timetable.

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

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

[0141] Furthermore, the calculation unit 24 holds period-specific control parameters, which are control parameters associated with type information indicating the temporal type of a set period. By selecting period-specific control parameters from the held period-specific control parameters based on the type information, it determines the control parameters that are scheduled to be transmitted by the transmission processing unit 25. As a result, the power control device 21 can set a schedule indicating when the control parameters are scheduled to be transmitted and transmit the control parameters to the controlled object according to the schedule.

[0142] The configurations shown in the embodiments described above are examples of the content of this disclosure. The configurations of the embodiments can be combined with other known technologies. Some parts of the configurations of the embodiments can be omitted or modified without departing from the spirit of this 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 device, 10 Station building equipment, 11 Power transmission equipment, 12 Wiring, 13 External facilities, 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 State 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 discrimination 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 indicating the status of the managed object transmitted from at least one of the managed objects, which includes power supply system equipment that supplies electricity to the train, the train, and station equipment, A calculation unit that calculates control parameters used for controlling the power of at least one of the power supply system equipment, the train, and the station equipment based on the state data of a controlled object different from the controlled object, The system includes a transmission processing unit that transmits the calculated control parameters to the controlled object, The aforementioned station facilities include charging equipment that supplies power to electric vehicles. The data acquisition unit acquires status data related to the charging device, The calculation unit calculates the control parameters of the controlled object, which is different from the charging device, based at least on the state data relating to the charging device. A power control device characterized by the following features.

2. The status data relating to the charging device includes at least one of the following data: power output from the charging device to the electric vehicle, amount of energy output from the charging device to the electric vehicle, number of electric vehicles connected to the charging device, and number of electric vehicles waiting to be charged. The power control device according to claim 1.

3. The calculation unit calculates the control parameters used for controlling the power of the controlled object based on a set of state data including the state data of a controlled object different from the controlled object. The power control device according to claim 1 or 2.

4. The data acquisition unit further acquires status data of external facilities that are outside the railway system, including the power supply system equipment and the station equipment, and that can utilize the power supplied from the railway system. The calculation unit calculates the control parameters used for controlling the controlled object based on the acquired state data of the external facility. The power control device according to claim 1 or 2.

5. The station equipment includes a power supply device that takes in the regenerative power generated by the train and supplies power to other station equipment or external facilities. The data acquisition unit acquires the status data of the power supply device which is the device to be managed, The transmission processing unit transmits the control parameters to the power supply unit, which is the object to be controlled. The power control device according to feature 4.

6. The data acquisition unit acquires, as state data, at least one of data indicating the electrical state and data indicating the physical state of the object under management. The power control device according to claim 1 or 2.

7. The data acquisition unit further acquires weather data of the location of the managed object as state data, The calculation unit calculates the control parameters used for controlling the controlled object based on the acquired weather data. The power control device according to claim 1 or 2.

8. The aforementioned managed entities are managed by multiple railway operators. The data acquisition unit acquires the status data of the managed object, which is managed by multiple railway operators. The transmission processing unit transmits the control parameters to the controlled objects managed by multiple railway operators. The power control device according to claim 1 or 2.

9. The aforementioned arithmetic unit, A simulator that simulates the power consumption of the railway system, including the power supply system equipment and the station equipment, based on the status data and the train's operating schedule, The system includes a control parameter calculation unit that calculates the control parameters based on the results of a simulation performed by the simulator. The power control device according to claim 1 or 2.

10. The control parameter calculation unit calculates the control parameters based on a plurality of objective functions. The power control device according to feature 9.

11. The control parameter calculation unit 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. The power control device according to claim 10.

12. The control parameter calculation unit adjusts the weights according to the operation of specifying the weights for each of the multiple objective functions. The power control device according to feature 11.

13. The control parameter calculation unit adjusts the weighting of each of the multiple objective functions based on the state data. The power control device according to feature 11.

14. The multiple objective functions include: a first objective function representing carbon dioxide emissions in the railway system and at least one of external facilities that can utilize electricity supplied by the railway system; a second objective function representing electricity costs in the railway system and at least one of the external facilities; a third objective function representing the stability of the power grid in the railway system and at least one of the external facilities; and a fourth objective function representing the discrepancy between the actual operation of the trains and the operating schedule. The power control device according to claim 10.

15. The calculation unit calculates the control parameters by performing calculations on the acquired state data when the state data is acquired by the data acquisition unit. The power control device according to claim 1 or 2.

16. The calculation unit calculates the control parameters by calculating the state data over a set period. The power control device according to claim 1 or 2.

17. The calculation unit holds time-specific control parameters, which are control parameters associated with type information indicating the time type of the set period, and determines the control parameters that are scheduled to be transmitted by the transmission processing unit by selecting the time-specific control parameters from among the held time-specific control parameters based on the type information. The power control device according to claim 16.

18. The station equipment includes a power supply device that takes in the regenerative power generated by the train and supplies power to other station equipment, or to external facilities outside the railway system including the power supply system and the station equipment that can utilize the power supplied from the railway system, and a charging device to which power is supplied from the power supply device, The control parameters include at least one of the following: parameters for controlling the power supply from the power supply unit to the charging device, and parameters for delivering guidance to encourage charging by the charging device. The power control device according to claim 1.

19. Train and, Station facilities and A power supply system including equipment for supplying electricity to the aforementioned train, A power control device comprising: a data acquisition unit that acquires status data indicating the status of a controlled object transmitted from at least one of the controlled objects, the train, the station equipment, and the power supply system equipment; a calculation unit that calculates control parameters used for controlling the power of at least one of the controlled objects, the train, the station equipment, and the power supply system equipment, based on the status data of a controlled object different from the controlled object; and a transmission processing unit that transmits the calculated control parameters to the controlled object, The aforementioned station facilities include charging equipment that supplies power to electric vehicles. The data acquisition unit acquires status data related to the charging device, The calculation unit calculates the control parameters of the controlled object, which is different from the charging device, based at least on the state data relating to the charging device. A power control system characterized by the following features.

20. A step of acquiring status data indicating the status of the managed object transmitted from at least one of the managed object, which includes power supply system equipment including equipment that supplies electricity to the train, the train, and station equipment, A step of calculating a control parameter used for controlling the power in at least one of the power supply system equipment, the train, and the station equipment, based on the state data of a controlled object different from the controlled object, The step includes transmitting the calculated control parameters to the controlled object, The aforementioned station facilities include charging equipment that supplies power to electric vehicles. In the step of acquiring the status data, status data relating to the charging device is acquired, In the step of calculating the control parameters, the control parameters of the controlled object, which is different from the charging device, are calculated based at least on the state data relating to the charging device. A power control method characterized by the following features.

21. On the computer, A step of acquiring status data indicating the status of the managed object transmitted from at least one of the managed object, which includes power supply system equipment including equipment that supplies electricity to the train, the train, and station equipment, A step of calculating a control parameter used for controlling the power in at least one of the power supply system equipment, the train, and the station equipment, based on the state data of a controlled object different from the controlled object, The steps of sending the calculated control parameters to the controlled object are performed, The aforementioned station facilities include charging equipment that supplies power to electric vehicles. In the step of acquiring the status data, status data relating to the charging device is acquired, In the step of calculating the control parameters, the control parameters of the controlled object, which is different from the charging device, are calculated based at least on the state data relating to the charging device. A power control program characterized by the following features.

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