Distribution planning device and distribution planning system

Abstract

To perform appropriate train operations by adjusting power between transformer stations based on a power generation amount and a consumption amount in railroad business.SOLUTION: A distribution planning device for planning distribution in railroad business comprises: a power generation amount / consumption amount prediction section for acquiring a power generation amount and a consumption amount in a first management range managed by a first transformer station and acquiring a power generation amount and a consumption amount in a second management range managed by a second transformer station; and a distribution planning section for calculating a surplus power amount of the first transformer station based on the power generation amount and the consumption amount in the first management range managed by the first transformer station and a power shortage amount of the second transformer station based on the power generation amount and the consumption amount in the second management range managed by the second transformer station and, when there is surplus power in the first transformer station and there is power shortage in the second transformer station, planning distribution to supply power from the first transformer station to the second transformer station.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a power distribution planning device and a power distribution planning system method for a power distribution control system in the railway business.

Background Art

[0002] Railway operators not only procure electricity from power suppliers, but may also own and generate electricity using their own power generation facilities powered by fossil fuels or renewable energy sources such as solar and wind power. In recent years, regenerative power generated during train deceleration has been effectively utilized, and the means of power procurement for railway operators are diverse.

[0003] The amount of electricity generated by this renewable energy and the amount of regenerative power vary depending on weather conditions, train operation status, etc. Also, the amount of electricity used for train operation also varies depending on weather conditions, train operation status, etc. To reduce the deviation in timing between this power generation and consumption, a storage battery may be provided to temporarily store power. When it is expected that the amount of power generation exceeds the consumption amount obtained by subtracting the amount of regenerative power from the amount of use, the surplus power obtained by subtracting the consumption amount from the amount of power generation can be utilized for supply to consumption areas such as station buildings or power sales.

[0004] However, if all of this surplus power is utilized for consumption areas or power sales, when an increase in power consumption is expected due to changes in train operation status, it becomes necessary to additionally procure power from the outside. For this reason, it is desired to predict the future power generation and consumption amounts of each substation of the railway operator in the railway business field, exchange the power of each substation, sufficiently store the power required in the future, and then utilize the remaining surplus power.

[0005] In Patent Document 1, regarding the prediction of consumption amount in the railway business, a technique is disclosed in which the power consumption amount due to train operation is predicted from the train schedule, and the total power consumption amount obtained by summing the power consumption amount and the regenerative power amount of all trains operating in the power supply section is calculated from the train schedule and the operation curve.

Prior Art Documents

Patent Document

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] When a railway operator has its own power generation facilities, for example, it is desired to predict the fluctuating power generation amount and consumption amount, make appropriate train operation plans by mutually lending the power of each substation based on the prediction, and further appropriately handle the surplus power in the case where the power generation amount exceeds the consumption amount (power consumption amount - regenerative power amount) and the power of an external power source. In the railway business, it is an object to adjust the power between substations based on the power generation amount and consumption amount so that appropriate train operation can be performed.

Means for Solving the Problems

[0008] To achieve the above problems, one form of the power distribution plan creation device of the present invention is a power distribution plan creation device for creating a power distribution plan in the railway business, which acquires the power generation amount and consumption amount in a first jurisdiction range under the jurisdiction of a first substation, and a power generation amount and consumption amount in a second jurisdiction range under the jurisdiction of a second substation. A power generation amount / consumption amount prediction unit, and based on the power generation amount and consumption amount in the first jurisdiction range under the jurisdiction of the first substation, the surplus power amount of the first substation, and based on the power generation amount and consumption amount in the second jurisdiction range under the jurisdiction of the second substation, calculates the power shortage amount of the second substation, and when there is surplus power in the first substation and there is a power shortage in the second substation, creates a power distribution plan for supplying power from the first substation to the second substation, and a power distribution plan creation unit.

Effects of the Invention

[0009] According to the present invention, in the railway business, the power between substations can be adjusted based on the power generation amount and consumption amount, and appropriate train operation can be performed.

Brief Description of the Drawings

[0010]

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Embodiment for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the content described below is merely an example of the embodiments of the present invention, and is not limited to the following embodiments, and can be implemented in various other forms. Also, not all of the various elements and their combinations described in the examples are essential for the solution means of the invention.

Examples

[0012] This example is a power distribution control system for controlling power distribution in the railway business field, and particularly a system for creating a power distribution plan for power facilities required for railway transportation. This is a method for creating a power distribution plan for each substation by simulating the train schedule and predicting the power generation and consumption amounts, further borrowing power between substations, and making use of surplus power within the railway operator while ensuring the power required for the stable operation of the train.

[0013] FIG. 1 is a conceptual diagram showing the functional configuration of the power distribution control system. The power distribution plan creation system 1 includes a power distribution plan creation device 10, a schedule management device 20, a data acquisition device 30, etc.

[0014] The power distribution plan creation device 10 is a server or computer including a schedule simulation unit 11, a power generation / consumption prediction unit 12, a power distribution plan creation unit 13, a power distribution plan transmission unit 14, etc.

[0015] The power distribution plan creation device 10, the schedule management device 20, the data acquisition device 30, and the substation group 70 are connected via a network 40 and can transmit and receive data to and from each other. The schedule management device 20 is a device for managing the schedule used for the operation of the train. The data acquisition device 30 is a device for acquiring external data related to the environment and situation such as weather information and event holding information, which exists outside the power distribution plan creation system 1.

[0016] The power generation device 50 is a power generation device for a large-scale area covering the entire railway business owned by a railway operator having a power distribution planning system 1, and is, for example, a thermal power plant, a nuclear power plant, a power generation device using renewable energy such as solar power or wind power, etc. The external power source 60 is a power generation device that supplies power to operators within a large-scale area held by parties other than the targeted railway operator, and is, for example, a thermal power plant, a nuclear power plant, a power generation device using renewable energy such as solar power or wind power, etc. These are connected to the substation group 70 by a large-scale upper power grid 2. Also, the upper power grid 2 is connected to the upper power storage unit 65 held by the targeted railway operator.

[0017] The substation group 70 includes a substation 71 which is a first substation that respectively manages a small-scale jurisdiction area smaller than the large-scale area, and a substation 74 which is a second substation. The substations in the substation group 70 are not limited to the two substations 71 and 74, and may be equipped with other substations. The power supplied from the upper power grid 2 to the substation group 70 is supplied to the substations 71 and 74. The substation 71 has a power distribution control unit 72 and a power storage unit 73, and is connected to a power generation device 81 smaller than the power generation device 50 and a power consumption area 82.

[0018] Examples of the power generation device 81 include power generation by solar panels installed in facilities within the first jurisdiction area of the substation 71. Examples of the power consumption area 82 include consumption obtained by subtracting the regenerative power of the train from the power used by the operation of the train within the jurisdiction area of the substation 71, consumption in facilities such as station buildings within the jurisdiction area, etc. Also, the substation 74 has a power distribution control unit 75, a power storage unit 76, etc., and is connected to a power generation device 83 and a power consumption area 84 in the second jurisdiction area of the substation 74.

[0019] The substations 71 and 74 are connected by an inter-substation power grid 3 and can mutually supply power. Note that the inter-substation power grid 3 does not necessarily need to be independent from the upper power grid 2 and may be the same power grid.

[0020] Figure 2 is a hardware block diagram of the power distribution planning system 1. The hardware configuration of the power distribution planning device 10 will be described. The power distribution planning device 10 is constructed by a computer. As shown in Figure 2, it includes a CPU (Central Processing Unit) 301, a ROM 302, a RAM 303, an HDD (Hard Disk Drive) 16 as a storage device, an HDD controller 305, a display 306, a network I / F (Interface) 307, an external device connection I / F 308, a bus line 310, a keyboard 309, a DVD (Digital Versatile Disk) drive 311, a media I / F 313, etc.

[0021] Among these, the CPU 301 controls the overall operation of the power distribution planning device 10. The ROM 302 stores programs used for driving the CPU 301. The RAM 303 is used as a work area for the CPU 301. The HDD 16 stores various data such as programs. The HDD controller 305 controls the reading or writing of various data to and from the HDD 16 according to the control of the CPU 301. The display 306 displays various information such as a cursor, menu, window, characters, or images.

[0022] The network I / F 307 is an interface for data communication using the network 40. The external device connection I / F 308 is an interface for connecting various external devices. The external devices in this case are, for example, a USB (Universal Serial Bus) memory, a printer, etc.

[0023] The keyboard 309 is a type of input means having a plurality of keys for inputting characters, numerical values, various instructions, etc. The bus line 310 is an address bus, a data bus, etc. for electrically connecting each component such as the CPU 301 shown in Figure 2.

[0024] The DVD drive 311 controls the reading of various data from a DVD 312 as an example of a removable recording medium. The media I / F 313 controls the reading or writing (storage) of data to / from a recording medium 314 such as a flash memory.

[0025] Also, the schedule management device 20 and the data acquisition device 30 are also constructed by a computer in the same way as the power distribution plan creation device 10, and their hardware configurations have the same configuration as the power distribution plan creation device 10.

[0026] The processing units that perform the processing such as the diagram simulation unit 11, the power generation / consumption prediction unit 12, the power distribution plan creation unit 13, and the power distribution plan transmission unit 14 of the power distribution plan creation device 10 in FIG. 1 are executed using the programs in the ROM 302 and the RAM 303 with the CPU 301 as a processor.

[0027] Also, the power distribution plan creation device 10, the schedule management device 20, and the data acquisition device 30 are connected to HDDs 16, 21, and 31 as storage devices for storing and memorizing the data generated and acquired by each device.

[0028] Note that the HDDs 16, 21, and 31 may be configured to be attached to the respective power distribution plan creation device 10, schedule management device 20, and data acquisition device 30. Also, the power distribution plan creation device 10, the schedule management device 20, and the data acquisition device 30 may be an integrated device.

[0029] FIG. 3 is a diagram showing a power distribution plan creation flowchart. The process by which the power distribution plan creation system 1 creates a power distribution plan based on the flowchart of FIG. 3 will be described.

[0030] Process 101 is a process that determines whether a startup event has occurred. Examples of startup events include cases where the timetable (timetable data) stored in the HDD 21 managed by the timetable management device 20 in FIG. 1 is changed. Other cases include when updated data related to the occurrence of a transportation failure is received from the data acquisition device 30, when updated data such as weather forecasts and event information used for timetable simulation or power generation / consumption prediction is received, when the actual power generation / consumption deviates from the existing power distribution plan, and when a certain period of time has elapsed since the creation of the previous power distribution plan by the timer included in the power distribution plan creation device 10. If no startup event occurs, Process 101 maintains an event waiting state, and if a startup event occurs, it proceeds to the next Process 102.

[0031] Process 102 is a process that simulates (reproduces in a simulated manner) the timetable for a plurality of conditions in the timetable simulation unit 11. The timetable simulation unit 11 in FIG. 1 requests the provision of timetable data from the timetable management device 20 via the network 40, and the timetable management device 20 transmits the timetable data stored in the HDD 21 to the timetable simulation unit 11 via the network 40. An example of the data indicating the configuration of the timetable table to be acquired is shown in FIG. 4. The timetable data stores the train number 1101, the arrival time 1103 corresponding to the station 1102, and the departure time 1104.

[0032] For example, the departure time 1104 of the train "1レ" with the train number 1101 departing from Station A of Station 1102 is "8:30", that is, 8:30. The arrival time 1103 is set as "-", which indicates that the departure station of the train "1レ" is Station A. Also, the arrival time 1103 of the train "1レ" at Station D is 8:42, and the departure time 1104 is "-", which indicates that the terminal station of the train "1レ" is Station D.

[0033] The diagram data in Fig. 4 is shown as diagram 411 in the form of a diagram as a conceptual diagram of the diagram simulation in Fig. 5. In the distribution plan creation system 1, the diagram is held in the form of the diagram data shown in Fig. 4, but hereinafter, for easier explanation, it is expressed in the form of a diagram.

[0034] The diagram simulation unit 11 simulates the diagram under a plurality of simulation conditions such as simulation condition 1 (421), simulation condition 2 (422), and simulation condition 3 (423) with different simulation conditions for the diagram 411 in Fig. 5. As a result, simulation result 1 (431), simulation result 2 (432), and simulation result 3 (433) are created, and the diagram data is stored in the HDD 16.

[0035] The diagram simulation here can be performed by a known method using a solution method for an optimization problem with constraints, etc. In setting the time range for simulating the diagram, for example, it can be set in time units specifying the first and the last, or from the start of operation of the first train of the day to the completion of operation of the last train.

[0036] Also, although there are three simulation conditions, namely simulation condition 1 (421) to simulation condition 3 (423), it is not limited to this number. Here, for example, simulation condition 1 is the diagram condition as planned without diagram disruption, simulation condition 2 is the condition when train "3レ" stops at station B and train "4レ" stops at station C for a longer time than the predetermined time, and simulation condition 3 is the condition when train "1レ" stops at station B and train "2レ" stops at station C for a longer time than the predetermined time.

[0037] This simulation condition can be simulated under conditions including at least any one of conditions related to operation such as operation suspension situations, conditions related to weather such as weather forecasts, and conditions related to the expected number of passengers such as events at facilities along the line. In determining the simulation condition, the necessary data therefor can be obtained from the data acquisition device 30, or can be obtained from the data acquisition device 30 via the network 40.

[0038] The process 103 in FIG. 3 is a process of splitting and dividing the train diagram simulation results of the process 102 by a plurality of substations that are in charge of them in the train diagram simulation unit 11. FIG. 6A is a conceptual diagram for dividing by substation, showing the jurisdiction range of the substations in the section where the train diagram simulation is performed. Here, the section from Station A to Station C is the range under the jurisdiction of Substation 71, and the section from Station C to Station D is the range under the jurisdiction of Substation 74. It is assumed that Substation 71 has a longer jurisdiction range and a larger consumption amount than Substation 74.

[0039] The division of the train diagram simulation results for each jurisdiction range of the substations will be described with reference to FIG. 6B. FIG. 6B is a conceptual diagram for dividing the train diagram simulation results by substation. The train diagram simulation result 1 (431) of the train diagram under simulation condition 1 (421), which is one of the train diagram simulation results, is divided into a train diagram simulation result 511 corresponding to the section from Station A to Station C, which is the jurisdiction range of Substation 71, and a train diagram simulation result 512 corresponding to the section from Station C to Station D, which is the jurisdiction range of Substation 74.

[0040] This division is also performed for other conditions, that is, the train diagram simulation result 2 (432) of the train diagram under simulation condition 2 (422) and the train diagram simulation result 3 (433) of the train diagram under simulation condition 3 (423), and is stored in the HDD 16.

[0041] Next, processes 105 to 107 are performed for each of the train diagrams in the sections under the jurisdiction of Substations 71 and 74 belonging to the substation group 70. In the following description of processes 105 to 107, the process in Substation 71 will be described as an example. The process 105 is a process of predicting the power generation amount and consumption amount in the jurisdiction range of Substation 71 under a plurality of conditions by the power generation amount / consumption amount prediction unit 12.

[0042] Figure 7 is a conceptual diagram of power generation amount and consumption amount prediction. For the train diagram simulation result 511 of the jurisdiction range of the substation 71 under the simulation condition 1 (421), the power generation amount and consumption amount prediction unit 12 predicts the power generation amount and consumption amount under different power generation amount and consumption amount prediction conditions A (711), power generation amount and consumption amount prediction condition B (712), and power generation amount and consumption amount prediction condition C (713). That is, the power generation amount and consumption amount are predicted under a plurality of power generation amount and consumption amount prediction conditions. Then, the power generation amount and consumption amount prediction values 721, 722, and 723 as the prediction results are obtained and stored in the HDD 16. This process is performed for each train diagram simulation result.

[0043] For the prediction of the power generation amount and consumption amount, known methods using statistical methods, regression models, etc. can be used. The power generation amount and consumption amount prediction conditions are three, namely, power generation amount and consumption amount prediction condition A (711) to power generation amount and consumption amount prediction condition C (713), but the number is not limited to this.

[0044] Here, the power generation amount to be predicted is the power generation amount within the jurisdiction range of the substation. In the substation 71 of FIG. 1, it corresponds to the power generation amount of the power generation device 81. Also, the consumption amount to be predicted here is the consumption amount within the jurisdiction range of the substation. In the substation 71, it corresponds to the consumption amount of the power consumption area 82 such as the consumption obtained by subtracting the regenerative power of the train from the power used by the operation of the train within the jurisdiction range of the substation 71 and the consumption in facilities such as the station building within the jurisdiction range.

[0045] Here, for example, the power generation amount and consumption amount prediction condition A (711) is the condition as planned without train diagram disruption, and the passenger volume increases in the evening. The power generation amount and consumption amount prediction condition B (712) is that there is no change in the passenger volume because the weather forecast is light rain. The power generation amount and consumption amount prediction condition C (713) is that the weather forecast changes from heavy rain to sunny, and the small passenger volume increases rapidly.

[0046] These power generation and consumption prediction conditions can be simulated using power generation and consumption prediction conditions that include at least one of the following: conditions related to operation such as operation hold, conditions related to weather such as weather forecasts, conditions related to the number of passengers such as events at facilities along the line, conditions related to power generation amount such as power generation plans, conditions related to consumption amount such as facility usage plans, etc. When determining the power generation and consumption prediction conditions, the necessary data can be obtained from the HDD 31 of the data acquisition device 30 or can be obtained from the data acquisition device 30 via the network 40.

[0047] FIG. 8 is a diagram showing an example of the configuration of a power generation and consumption predicted value data table. This represents, in tabular form, the data corresponding to the power generation and consumption predicted value 721 under the power generation and consumption prediction condition A (711) in the simulation condition 1 (421).

[0048] Each row stores predicted values of the power generation amount 1202 and the consumption amount 1203 corresponding to the time 1201, and the predicted values for each second are described in each row. Also, “8:30:00” at the time 1201 represents the hh:mm:ss format, that is, 8 hours 30 minutes 0 seconds.

[0049] FIG. 8 shows the predicted values within a predetermined time period of 15 seconds from 8:30:00 to 8:30:15, but actually, data of the predicted values corresponding to the time range for simulating the train schedule is obtained. Note that the calculation interval of the power generation and consumption predicted values may be every 30 minutes or every hour.

[0050] In the distribution plan creation system 1, the power generation and consumption predicted values are stored in the HDD 16 in the form of the power generation and consumption predicted value data shown in FIG. 8. However, for easier explanation, hereinafter, it will be explained in the form of a line graph like the power generation and consumption predicted values 721, 722, 723 in FIG. 7.

[0051] In process 106 of FIG. 3, the power generation / consumption prediction unit 12 (see FIG. 1) calculates and obtains a power generation / consumption prediction value for substation power distribution planning by combining, from among the predicted values of power generation and consumption based on power generation and consumption, the values with the minimum power generation and the maximum consumption at each time. FIG. 9A is a conceptual diagram of the creation of a power generation / consumption prediction value for power distribution planning. More specifically, in process 105, power generation / consumption prediction values corresponding to simulation condition 1 (421), simulation condition 2 (422), simulation condition 3 (423), and power generation / consumption prediction condition A (711), power generation / consumption prediction condition B (712), and power generation / consumption prediction condition C (713) are calculated.

[0052] Here, the same power generation / consumption prediction conditions are set for each simulation condition, but different power generation / consumption prediction conditions may be set for each simulation condition.

[0053] The power generation / consumption prediction unit 12 selects, from among all the power generation / consumption prediction values created in process 105, the value with the minimum power generation and the value with the maximum consumption at each time, creates a power generation / consumption prediction value for power distribution planning, and stores it in the HDD 16. Then, while obtaining the amount of power storage to be secured from the minimum power generation and the maximum consumption, the excess power amount is calculated.

[0054] Regarding the power generation / consumption prediction values for various train operation simulation conditions and various power generation / consumption prediction conditions, the excess power amount may be calculated from the power generation and consumption at each time, with the power generation being a value below these minimum values and the consumption being a value above these maximum values.

[0055] An example of the selection of power generation and consumption is shown. From among the prediction results of power generation / consumption prediction value 811 (721), power generation / consumption prediction value 812 (722), power generation / consumption prediction value 813 (723), and power generation / consumption prediction values 814 to 819 in FIG. 9A, the value with the minimum power generation and the value with the maximum consumption at each time are selected. This is used as the power generation / consumption prediction value 821 for power distribution planning shown in FIG. 9B and stored in the HDD 16.

[0056] Process 107 is a process of creating a power distribution plan for a substation as shown in FIG. 12A from the predicted values of power generation and consumption for power distribution planning created in the power distribution planning unit 13 (see FIG. 1), that is, the data in FIG. 9B.

[0057] Based on the diagram showing the flowchart of power distribution plan creation in FIG. 10 and the diagram showing the data table of the power distribution plan in FIG. 11, the processing procedure of this process 107 will be described.

[0058] The power generation and consumption of the predicted values of power generation and consumption 821 for power distribution planning in FIG. 9B are the data (values) of power generation 1202 and consumption 1203 in FIG. 11.

[0059] In process 201 in FIG. 10, a power distribution plan is created in time step order (time series order). That is, referring to time 1201 in FIG. 11, it is processed in the order of "8:30:00" in hh:mm:ss format, that is, 8:30:00, 8:30:01 up to 8:30:15. Here, as an example, the first "8:30:00", that is, 8:30:00 will be mainly described.

[0060] In process 202, the total amount of future power shortage in the predicted values of power generation and consumption 821 for power distribution planning in FIG. 9B, in other words, the total amount of electricity storage 1312 that should be secured when the consumption 1203 in each row within the predetermined time in FIG. 11 exceeds the power generation 1202. At "8:30:12" to "8:30:14" in FIG. 11, the consumption exceeds 10, 20, and 10 kW respectively, and the values are set as the power shortage amount 1307.

[0061] Here, the amount of stored power 1312 to be ensured is calculated as follows. Assuming that the charging and discharging are on a one-second scale like the discharge power amount 1308, for each power shortage amount from "8:30:12" to "8:30:14" of the power shortage amount 1307, multiply each power shortage amount by one second and take the sum, which results in 40 kJ. And since this 40 kJ is the amount of stored power to be ensured first, it becomes the value of the amount of stored power 1312 at "8:30:00". Note that the unit of the amount of stored power may be kWh, but here the unit is set to kJ assuming charging and discharging on a one-second scale.

[0062] Process 203 is a process for determining whether there is an excess of power generation. First, at "8:30:00", the power generation amount 1202 is 100 kW and the consumption amount 1203 is 80 kW. Since the power generation amount exceeds the consumption amount, the process proceeds to process 221.

[0063] Process 221 is a process for allocating the same amount as the consumption amount from the power generation amount for consumption, that is, a process for allocating the same amount as the consumption amount 1203 with the power generation amount 1202 as the upper limit for consumption. Since the consumption amount 1203 at "8:30:00" is 80 kW, 80 kW is allocated to the consumption allocation amount 1302.

[0064] Process 222 is a process for determining whether the stored power amount 1311 is equal to or greater than the amount of stored power 1312 to be ensured. At "8:30:00", the stored power amount 1311 is 0 kJ because it has not been charged, and the amount of stored power 1312 to be ensured is 40 kJ. Since the stored power amount 1311 is less than the amount of stored power 1312 to be ensured, the process proceeds to process 223.

[0065] Process 223 is a process for setting the amount that does not exceed the amount of stored power 1312 to be ensured from the excess power generation amount as the storage allocation amount 1303, and the remaining as the surplus power amount 1304.

[0066] At "8:30:00", the excess power generation amount is 20 kW. The amount of stored power 1312 to be ensured is 40 kJ. Even if all 20 kW is allocated to storage for one second, the stored power amount 1311 will not exceed the amount of stored power 1312 to be ensured. Therefore, 20 kW will be allocated to the storage allocation amount 1303 and 0 kW will be allocated to the surplus power amount 1304.

[0067] In this way, the allocation plan only needs to ensure that the stored power amount 1312 to be secured by the stored power amount 1311 by "8:30:12" when the power shortage amount 1307 occurs. However, even if an unexpected situation occurs, the power amount required for the stored power amount 1311 is secured with priority over the surplus power amount 1304 until the power amount required for the stored power amount 1311 is secured.

[0068] Process 204 is a process of increasing or decreasing the stored power amount at the next time for the stored and discharged power. That is, when 20 kW is set as the stored power equivalent amount 1303 in process 223, since there is 1 second until the next time, 20 kJ obtained by multiplying 20 kW by 1 second is added to 0 kJ of the stored power amount 1311 at "8:30:00", and the stored power amount 1311 at "8:30:01" becomes 20 kJ and is stored in the storage unit 73 of the substation 71 in FIG. 1.

[0069] After process 204, the process returns to process 201 and the next time, specifically, the process at "8:30:01" is performed, and the subsequent processes are sequentially implemented.

[0070] On the other hand, an example where surplus power occurs will be described when the above processes are performed in time step order and it is "8:30:02". In process 202, the total amount of future power shortage, that is, the total amount when the consumption amount exceeds the power generation amount from "8:30:02" to "8:30:15" becomes the stored power amount to be secured.

[0071] The consumption amounts at "8:30:12" to "8:30:14" each exceed 10, 20, and 10 kW, and those values are set in the power shortage amount 1307. Here, the stored power amount 1312 to be secured is 40 kJ obtained by multiplying each power shortage amount from "8:30:12" to "8:30:14" of the power shortage amount 1307 by 1 second and taking the sum, assuming that the charge and discharge are performed on a 1-second scale like the discharge power amount 1308.

[0072] Process 203 is a process for determining whether there is an excess of power generation at "8:30:02". At "8:30:02", the power generation amount 1202 is 100 kW and the consumption amount 1203 is 80 kW, and since there is an excess of power generation, the process proceeds to process 221.

[0073] Process 221 is a process for allocating the same amount as the consumption amount out of the power generation amount for consumption. Since the consumption amount 1203 at "8:30:02" is 80 kW, 80 kW is allocated to the consumption equivalent amount 1302.

[0074] Process 222 is a process for determining whether the stored power amount 1311 is equal to or greater than the stored power amount 1312 to be secured. At "8:30:02", the stored power amount 1311 is 40 kJ and the stored power amount 1312 to be secured is 40 kJ, and since the stored power amount 1311 is equal to or greater than the stored power amount 1312 to be secured, the process proceeds to process 231.

[0075] Process 231 is a process for setting the excess power amount as the power amount exceeding the excess power generation amount and the stored power amount to be secured. At "8:30:02", the excess power generation amount is 20 kW, and since the stored power amount 1311 has reached the stored power amount 1312 to be secured, 20 kW is calculated as the value of the excess power amount 1304. Note that the stored power equivalent amount is 0 kW.

[0076] Process 204 is a process for increasing or decreasing the stored power amount at the next time for the stored and discharged power. Since the new stored power amount at "8:30:02" is 0 kW, the stored power amount 1311 at "8:30:03" is equal to that at 8:30:02, which is 40 kJ.

[0077] Furthermore, as an example where the consumption amount exceeds the power generation amount, the above processes are described as being executed in time step order until "8:30:12". In process 202, the total amount of future power shortage, that is, the total amount by which the consumption amount exceeds the power generation amount from "8:30:12" to "8:30:15", is the stored power amount to be secured.

[0078] From “8:30:12” to “8:30:14”, the consumption amounts each exceed 10, 20, and 10 kW, and those values are set as the power shortage amount 1307. Here, the power storage amount 1312 to be ensured, assuming that it charges and discharges on a one-second scale like the discharge power amount 1308, is obtained by multiplying each power shortage amount from “8:30:12” to “8:30:14” of the power shortage amount 1307 by one second and taking the sum, which is 40 kJ.

[0079] Process 203 is a process for determining whether there is an excess in power generation. At “8:30:12”, since the power generation amount is 100 kW and the consumption amount is 110 kW, which means there is no excess in power generation, the process proceeds to process 211.

[0080] Process 211 is a process for allocating all the power generation amount to the consumption amount and discharging the battery for the power shortage. At “8:30:12”, the power generation amount 1202 is 100 kW and the consumption amount 1203 is 110 kW, so all 100 kW is allocated to the consumption equivalent amount 1302. Since the power shortage amount 1307 at “8:30:12” is 10 kW, the discharge power amount 1308 becomes 10 kW.

[0081] Process 204 is a process for increasing or decreasing the power storage amount at the next time for the power stored and discharged. Since 10 kW is discharged from the battery in process 211, 10 kJ obtained by multiplying 10 kW by one second is subtracted from the power storage amount 1311 at “8:30:12”, and the remaining 30 kJ becomes the power storage amount 1311 at “8:30:13”.

[0082] The consumption equivalent amount 1302, the power storage equivalent amount 1303, the surplus power amount 1304, the power shortage amount 1307, the discharge power amount 1308, the power storage amount 1311, and the power storage amount 1312 to be ensured are calculated for all times at substation 71 and substation 74. Then, the data table of the power distribution plan corresponding to the train diagram of the section under the jurisdiction of substation 71 and substation 74 is saved in HDD16, and process 107 ends.

[0083] Note that although the creation of the power distribution plan has been described for two substations, i.e., substation 71 and substation 74, it is not limited to this, and it may also be the case of three or more substations.

[0084] With such a power distribution plan, it is possible to ensure the power storage amount so that train operation can be performed without affecting train operation, and at the same time, the surplus power amount can be maximized.

[0085] FIG. 12A is a diagram showing a graph of the power distribution plan, which represents the power distribution plan created as shown in FIG. 11 in the form of a line graph. The power distribution plan in the power distribution plan creation system 1 is stored in the HDD 16 in the form of the power distribution plan data shown in FIG. 11. However, for easier explanation, hereinafter, it will be represented in the form of a line graph.

[0086] The process 108 in FIG. 3 is a process of adjusting the power distribution plan so as to supply power from a substation where surplus power occurs to a substation where power shortage occurs. When there is a substation in the power distribution plan of each substation where the power storage amount cannot be ensured and a power shortage amount occurs at a certain time, the power distribution plan creation unit 13 in FIG. 1 matches with a substation where surplus power occurs at the same time and adjusts the power distribution plan so as to supply power.

[0087] For example, in the power distribution plan based on the power generation amount and consumption amount in the jurisdiction range of substation 74, if there is no power storage amount from 8:30:00 to 8:30:10 and the power cannot be discharged, and a power shortage amount of 20 kW each is calculated, in the power distribution plan of substation 71 in FIG. 11, it can be seen that there is no surplus power amount 1304 from 8:30:00 to 8:30:01, but there is a surplus power amount 1304 from 8:30:02 to 8:30:10. Therefore, the power distribution plan is adjusted so as to supply this surplus power amount 1304 to substation 74. On the other hand, in the range where the surplus power amount is 0 kW, for example, in the range from 8:30:00 to 8:30:01, the power distribution plan is not adjusted to supply power from substation 71 to other substations.

[0088] This adjustment process is assigned to the power transfer amount 1305 and the transfer destination 1306 in FIG. 11 at the substation 71, and its power distribution plan is stored in the HDD 16. On the other hand, at the substation 74, it is assigned to the power received 1309 and the transfer source 1310 of the power distribution plan in the same format as FIG. 11 created for the substation 74. In this way, the power distribution plan creating unit 13 adjusts the power distribution plan so that power is supplied from the substation 71 having a surplus power amount to the substation 74 having a power shortage amount, thereby reducing the power shortage amount of the substation 74.

[0089] Note that the substation to which power is transferred from the substation 71 is not limited to the substation 74, and may be other substations other than the substation 74. Also, in the transfer, a substation with a short distance from the substation 71 may be preferentially assigned for supply, or a substation that can be covered by the power transferred from the substation 71 may be preferentially assigned for supply.

[0090] FIG. 12B is the power distribution plan of the substation 71 after the adjustment of the power distribution plan, and shows the result of the adjustment of the power distribution plan in the form of a line graph. Comparing FIG. 12A and FIG. 12B, FIG. 12B is a power distribution plan that secures the power storage amount so that appropriate train operation can be performed without affecting the train operation in the railway business, transfers power, and utilizes the surplus power amount.

[0091] The process 109 in FIG. 3 is a process in which when there is a substation with a power shortage even after the adjustment of the power distribution plan by the process 108, the power distribution plan creating unit 13 adjusts the power distribution plan so as to procure power from the power generation device 50 connected to the upper power system 2 or the external power source 60 (see FIG. 1).

[0092] In the adjustment, first, the power generation amount of the power generation device 50 is predicted using the power generation plan and the weather information etc. obtained from the data acquisition device 30. At each time, when the power generation amount of the power generation device 50 exceeds the power shortage amount of the substation group 70, the power shortage amount is assigned to the substation group 70 from the power generation amount, and the remainder is stored in its own upper power storage unit 65. When the power generation amount of the power generation device 50 is less than the power shortage amount of the substation group 70, after all the power generation amount is assigned to cover the power shortage amount, the upper power storage unit 65 is discharged.

[0093] If the power is still insufficient after this, the shortage amount is procured from the external power source 60. By the processing up to this point, the amount of power procured from the external power source can be minimized.

[0094] The process 110 is a transmission process for the power distribution plan created by the power distribution plan creation unit 13 of the power distribution plan creation system 1 and stored in the HDD 16 to be transmitted by the power distribution plan transmission unit 14 to each substation belonging to the substation group 70 via the network 40. All the power distribution plans of each substation to be transmitted are sent to each substation or the main substation, but only the power distribution plan corresponding to each substation may be sent to the corresponding substation. Also, the power distribution plan to be sent may be all or part of the data table of the power distribution plan of each substation stored in the HDD 16.

[0095] Based on the power distribution plan transmitted to the substation, for example, the power distribution control unit 72 of the substation 71 performs power distribution control on the inter-substation power system 3, the power storage unit 73, and the power consumption area 82.

[0096] The data flow of this embodiment will be described using the data flow diagram of FIG. 13A. The train schedule simulation unit 11 acquires train schedule data from the HDD 21 of the train schedule management device 20. The train schedule data includes at least data related to the train schedule such as train numbers, stations, arrival and departure times, etc.

[0097] Also, the train schedule simulation unit 11 acquires data necessary for determining the simulation conditions from the HDD 31 of the data acquisition device 30. This data includes data related to operation such as operation rescheduling situations, data related to weather such as weather forecasts, data related to the number of passengers such as events at facilities along the line, etc.

[0098] Further, the train diagram simulation unit 11 acquires data related to the configuration of the power transmission network such as the jurisdiction range of the substation from the HDD 31 of the data acquisition device 30 in order to divide the simulated train diagram for each jurisdiction range of the substation. The train diagram simulation unit 11 transmits to the power generation / consumption prediction unit 12 the train diagram simulation results for the simulation conditions divided for each substation.

[0099] The power generation / consumption prediction unit 12 further acquires data necessary for determining the power generation / consumption prediction conditions from the HDD 31 of the data acquisition device 30. This data includes data related to operation such as the operation suspension situation, data related to weather such as weather forecasts, data related to the number of passengers such as events at facilities along the line, data related to the power generation amount such as the power generation plan, and data related to the consumption amount such as the facility usage plan.

[0100] The power generation / consumption prediction unit 12 transmits power generation / consumption prediction value data for distribution plan to the distribution plan creation unit 13. The power generation / consumption prediction value data for distribution plan includes at least the predicted values of the power generation amount and consumption amount at each time in the jurisdiction range of each substation.

[0101] The distribution plan creation unit 13 acquires the power generation / consumption prediction values from the power generation / consumption prediction unit 12, creates the distribution plan for each substation, and performs adjustment between substations. Further, it creates the distribution plan for each substation taking into account the power generation devices owned by the railway operator itself and the supply from external power sources, and stores it in the HDD 16. Then, the distribution plan transmission unit 14 transmits the distribution plan data stored in the HDD 16 to each substation. The distribution plan data includes at least the consumption ratio equivalent, the power storage ratio equivalent, the discharge amount, the power transfer amount and the transfer destination, the power received and the source, and the external power procurement amount at each time.

Example

[0102] In this example, when procuring the power shortage amount from the external power source 60, a method of predicting the power procurement cost of the external power and minimizing the power procurement cost by procuring power at the optimal timing will be described. The same reference numerals are given to the components common to the first embodiment, and the detailed description thereof is omitted.

[0103] From the power shortage amount at each time of the substation group 70 calculated from the result of the process 108 in FIG. 3, the power generation amount of the power generation device 50 calculated in the process 109, and the power storage amount of the upper power storage unit 65, the amount of power that needs to be procured from the external power source 60 at each time can be calculated. Further, from the data acquired from the data acquisition device 30 via the network 40, the power procurement cost from the external power source 60 at each time is predicted. Specifically, the following process is performed based on the power shortage amount and the power procurement cost at each time.

[0104] At the time when a power shortage occurs, the power shortage amount at the time when the power shortage occurs is procured from the external power source 60 and stored in the upper power storage unit 65 at the time when the power procurement cost before that time is the lowest.

[0105] This will be described using an example. The current time is 12:00, and the power storage amount of the upper power storage unit 65 is 0 kWh. The substation group 70 is predicted to have a power shortage of 100 kWh from 14:00 to 15:00. At other times, the power generation amount of the power generation device 50 and the power consumption amount of the substation group 70 are equal.

[0106] The power procurement cost of the external power source 60 is predicted to be 60 yen per kWh from 12:00 to 13:00, 50 yen per kWh from 13:00 to 14:00, and 80 yen per kWh after 14:00.

[0107] At 14:00 when a power shortage occurs, the power procurement cost from the external power source 60 is 80 yen per kWh. The lowest power cost before 14:00 is 50 yen per kWh from 13:00 to 14:00. From this, a power distribution plan is created such that 100 kWh of power is procured from the external power source 60 and stored in the upper power storage unit 65 during the time period from 13:00 to 14:00, and 100 kWh is discharged from the upper power storage unit 65 during the time period from 14:00 to 15:00. Thereby, the power procurement cost is minimized.

[0108] The data flow of this embodiment will be described with reference to the data flow diagram of FIG. 13B. Note that the description of the parts common to the first embodiment will be omitted. The power distribution plan creation unit 13 acquires the predicted power generation and consumption values ​​from the power generation and consumption prediction unit 12. In addition, the power distribution plan creation unit 13 acquires the predicted value of the power procurement cost at each time from the data acquisition device 30. EXAMPLES

[0109] In this embodiment, a method of running additional trains using surplus power will be described. Components common to the first embodiment will be given the same reference numerals and detailed description will be omitted.

[0110] The amount of power required to run a particular type of train over a given section can be predicted by known methods such as Patent Document 1. If the amount of surplus power at any substation during a certain time period exceeds the amount of power required to run a train, a change in the timetable to run an additional train may be proposed.

[0111] An example will be used to explain this. It is predicted that the power required for a certain type of train to run a specified section from station A to station C is 100 kWh. It is assumed that the substation 71 that has jurisdiction over the specified section between station A and station C has a power distribution plan that generates 100 kWh of surplus power between 12:00 and 13:00.

[0112] In this case, because it is possible to operate a special train as a new electric train of this type between 12:00 and 13:00, the power distribution plan creation device 10 registers the timetable with the addition of the special train in the timetable management device 20. Using the timetable after the addition of the new electric train, i.e., the timetable with the addition of the special train, processes 102 to 110 are performed again to create a power distribution plan for the timetable with the addition of the special train.

[0113] This will allow additional trains to run using surplus power. The data flow of this embodiment will be described with reference to the data flow diagram in FIG. 13C. Note that the description of the parts common to Embodiment 1 will be omitted. The power distribution plan creation unit 13 acquires the amount of power required for the train to run in each section according to the train type from the data acquisition device 30. In addition, it determines the locations where additional trains can run based on the power distribution plan of each substation, and transmits the content of the train schedule change to the train schedule management device 20. The train schedule management device 20 changes the train schedule based on the received content of the train schedule change.

Embodiment

[0114] In this embodiment, a method for narrowing down the simulation conditions in train schedule simulation and the power generation / consumption prediction conditions will be described. The same reference numerals are given to the components common to Embodiment 1, and the detailed description thereof will be omitted.

[0115] Process 106 is intended to calculate the amount of surplus power in any simulation conditions and power generation / consumption prediction conditions by obtaining the predicted values of power generation and power distribution for various train schedule simulation conditions and power generation / consumption prediction conditions.

[0116] Therefore, it is desirable that the predicted values of power distribution and consumption used for creating the predicted values of power generation and consumption for power distribution planning be as many as possible. That is, it is desirable that the number of combinations of train schedule simulation conditions and power generation / consumption prediction conditions be as large as possible.

[0117] On the other hand, the computing resources such as servers that can be used for train schedule simulation in Process 102 and power generation / consumption prediction in Process 105 are limited. Therefore, in order to enable appropriate train operation, it is necessary to narrow down the number of combinations of train schedule simulation conditions and power generation / consumption prediction conditions so that the computing resources such as servers are not insufficient in creating the predicted values of power generation and consumption for power distribution planning.

[0118] As an example of the narrowing-down method, take the duration of the transportation disruption under the train diagram simulation conditions. Assume that on the line between Station A and Station D under the jurisdiction of Substation 71 and Substation 74, the operation suspension occurred on the entire line between Station A and Station D due to the handling of the emergency button at Station B. For the preparation of the power distribution plan for this, train diagram simulation is performed for the simulation conditions with different durations of the operation suspension.

[0119] The train diagram simulation unit 11 may acquire data on the duration of the operation suspension due to the handling of the emergency button in the past from the data acquisition device 30 via the network 40. By statistically processing this data, a predetermined time range within which the duration of the operation suspension falls with a 95% probability can be calculated, and the duration of the operation suspension under the train diagram simulation conditions can be narrowed down within this range. Similarly, the duration of the operation suspension can be narrowed down under the power generation / consumption prediction conditions.

[0120] Also, when the train diagram between Station A and Station D is managed at a predetermined time interval such as in 15-second increments, it is expected that multiple identical results can be obtained even if the duration of the operation suspension under the train diagram simulation conditions is divided into intervals with a smaller width. By setting the duration of the transportation disruption in 15-second increments or at a time interval greater than 15 seconds, the train diagram simulation conditions can be narrowed down compared to the cases of 1-second or 5-second increments. Similarly, the duration of the operation suspension can be narrowed down under the power generation / consumption prediction conditions.

Example

[0121] In this example, a method for maximizing the valuable assets obtained through market transactions that exchange surplus power for valuable assets will be described. The same reference numerals are assigned to the components common to Example 1, and the detailed description thereof will be omitted.

[0122] FIG. 14 is a conceptual diagram showing the functional configuration of the power distribution control system when conducting market transactions, and explains the functional configuration of the power distribution control system of this embodiment. FIG. 14 is obtained by adding a market trading unit 90 to the main configuration of FIG. 1, and has all the configurations of FIG. 1. The market trading unit 90 is connected to the upper power system 2 and the inter-substation power system 3, and exchanges the supplied power with valuable assets. Examples of valuable assets include currency, carbon credits, and the like.

[0123] After the completion of process 108, the power distribution planning unit 13 can distribute the surplus power generated at each substation and the power by which the power generation amount of the power generation device 50 exceeds the consumption amount of the substation group 70 in process 109 to the market trading unit. The market trading unit 90 exchanges the distributed power for valuable assets through market transactions.

[0124] By predicting the exchange rate between power and valuable assets, the valuable assets obtained through market transactions can be maximized. This method will be described below.

[0125] In process 109, the surplus power amount of each substation belonging to the substation group 70 and the excess power generation amount by which the power generation amount of the power generation device 50 exceeds the consumption amount of the substation group 70 are calculated. From the data obtained from the data acquisition device 30 via the network 40, the exchange rate between power and valuable assets in the market trading unit 90 at each time is predicted. From the surplus power amount of each power conversion device and the excess power generation amount of the power generation device 50 at each time and the exchange rate between power and valuable assets, the following processes are performed.

[0126] At the time when surplus power occurs at each substation, the time when the exchange rate is most favorable after that time is calculated. If there is a difference between the time when surplus power occurs and the time when the exchange rate is most favorable, the surplus power is stored in the energy storage unit of the substation, and a power distribution plan is created such that the surplus power is supplied to the market trading unit 90 via the inter-substation power system 3 at the time when the exchange rate is most favorable.

[0127] Also, at the time when power generation exceeds the limit in the power generation device 50, the time when the exchange rate is most favorable after that time is calculated. If there is a difference between the time when power generation exceeds the limit and the time when the exchange rate is most favorable, the excess power generation is stored in the upper storage unit 65, and at the time when the exchange rate is most favorable, a power distribution plan is created to supply the power to the market trading unit 90 via the upper power grid 2.

[0128] This will be described using an example. The current time is 12:00, and at the substation 71, it is predicted that 100 kWh of surplus power will be generated from 12:00 to 13:00. The exchange rate between power and currency in the market trading unit 90 is predicted to be 30 yen per kWh from 12:00 to 13:00, 50 yen per kWh from 13:00 to 14:00, and 40 yen per kWh after 14:00. At 12:00 when the surplus power is generated, the exchange rate in the market trading unit 90 is 30 yen per kWh.

[0129] The most favorable exchange rate after 12:00 is 50 yen per kWh from 13:00 to 14:00. From this, the 100 kWh of surplus power generated from 12:00 to 13:00 is stored in the storage unit 73, and a power distribution plan is made to supply 100 kWh of the stored power in the storage unit 73 to the market trading unit 90 during the time period from 13:00 to 14:00 and exchange it for currency.

[0130] Furthermore, when the valuable asset A obtained through the market trading of power can be exchanged with another valuable asset B, by predicting the conversion rate between the valuable asset A and the valuable asset B, the valuable asset B obtained through the market trading can be maximized.

[0131] Taking the valuable asset A as currency and the valuable asset B as carbon credits as an example, it means maximizing the carbon credits obtained from the currency obtained through the power transaction. The exchange plan between the valuable asset A and the valuable asset B can also be included in the power distribution plan created by the power distribution plan creation system 1. The following processing is performed based on the predicted conversion rate between the valuable asset A and the valuable asset B.

[0132] When acquiring the valuable asset A, calculate the time when the exchange rate between the valuable asset A and the valuable asset B is most favorable after that time. If there is a difference between the time of acquiring the valuable asset A and the time when the exchange rate is most favorable, retain the valuable asset A and exchange the valuable asset A for the valuable asset B at the time when the exchange rate is most favorable.

[0133] This will be described using an example. The current time is 12 o'clock, and it is a power distribution plan to acquire 100 yen from 12 o'clock to 13 o'clock. The exchange rate between the currency and carbon credit in the market trading section 90 is predicted to be 10 credits per yen from 12 o'clock to 13 o'clock, 20 credits per yen from 13 o'clock to 14 o'clock, and 15 credits per yen after 14 o'clock. At 12 o'clock when the acquisition of the valuable asset A starts, the exchange rate in the market trading section 90 is 10 credits per yen.

[0134] The most favorable exchange rate after 12 o'clock is 20 credits per yen from 13 o'clock to 14 o'clock. From this, the 100 yen acquired from 12 o'clock to 13 o'clock is retained, and an exchange plan is created to exchange this for carbon credit during the time period from 13 o'clock to 14 o'clock.

[0135] In this way, the valuable assets obtained through market transactions that exchange surplus power and valuable assets can be maximized.

[0136] The data flow of this embodiment will be described using the data flow diagram of FIG. 13B. Note that the description of the parts common to Embodiment 1 is omitted. The power distribution plan creation unit 13 acquires the predicted values of the power generation amount and consumption amount from the power generation amount / consumption amount prediction unit 12. In addition to acquiring the predicted value of the power procurement cost at each time from the data acquisition device 30, the power distribution plan creation unit 13 can also acquire the predicted value of the exchange rate in the market trading section 90 at each time from the data acquisition device 30.

[0137] The power distribution plan creation unit 13 creates a power distribution plan for each substation and transmits the power distribution plan data to each substation. The power distribution plan data includes at least the consumption ratio equivalent, the energy storage ratio equivalent, the power transfer amount and the transfer destination, the power received amount and the source, the external power procurement amount, and the market transaction department supply amount at each time.

Example

[0138] In this embodiment, a method for maximizing the valuable assets obtained by distinguishing between power types of high-value green power and non-high green power and preferentially trading green power in the market transaction will be described. The same reference numerals are assigned to the common components in Embodiment 1 and Embodiment 5, and the detailed description thereof will be omitted.

[0139] Electric power generated during power generation by a method that does not emit greenhouse gases such as sunlight and wind power is called green power, and green power has an environmental added value compared to non-green power generated by a method that emits greenhouse gases during power generation. Therefore, more valuable assets can be obtained by distinguishing and managing so that green power is preferentially used for market transactions.

[0140] A power distribution plan creation method when distinguishing between green power and non-green power in the power composed of green power and non-green power will be described. When predicting the power generation amount in the power generation amount and consumption amount prediction of process 105, predict the green power generation amount and the non-green power generation amount in the power generation amount respectively. When selecting the value with the minimum power generation amount from the power generation amount and consumption amount prediction values in process 106, use the green power generation amount and the non-green power generation amount for the selected power generation amount as the green power generation amount and the non-green power generation amount in the power generation amount and consumption amount prediction values for the power distribution plan.

[0141] This will be described using an example. FIG. 15 is a diagram showing a power generation / consumption prediction value data table when distinguishing between green power and non-green power. The power generation / consumption prediction values 2001 to 2003 in each table are the three power generation / consumption prediction values calculated in process 105. At 8:30:00, among the three prediction values, the power generation amount that is the smallest is 100 kW of the power generation / consumption prediction value 2003. Therefore, the power generation amount of the power generation / consumption prediction value for power distribution planning is 100 kW. Also, the breakdown of this is a green power generation amount of 50 kW and a non-green power generation amount of 50 kW, which become the green power generation amount and non-green power generation amount in the power generation / consumption prediction value for power distribution planning.

[0142] FIG. 16 is a diagram showing a power distribution plan data table when distinguishing between green power and non-green power. In the figure, G means green power and NG means non-green power. For the consumption equivalent 1302, the storage equivalent 1303, the surplus power amount 1304, the power trading amount 1305, the discharge power amount 1308, and the storage amount 1311, the respective values of green power and non-green power are calculated.

[0143] Regarding the power distribution plan creation flowchart in FIG. 10, the process when distinguishing between green power and non-green power will be described. When discharging the storage battery in process 211, a process of prioritizing non-green power is added. For example, when the green power storage amount is 40 kWh, the non-green power storage amount is 40 kWh, and the power shortage amount is 20 kW, a process of discharging 20 kW of non-green power is added.

[0144] When allocating to consumption in process 221, a process of prioritizing the non-green power generation amount is added. For example, when the green power generation amount is 40 kW, the non-green power generation amount is 40 kW, and the consumption amount is 60 kW, a process of allocating 20 kW of the green power generation amount and 40 kW of the non-green power generation amount to consumption is added.

[0145] When calculating the equivalent storage amount and the excess power amount in process 223, a process of preferentially using green power as the excess power is added. For example, when the excess power generation amount is 40 kW, of which the green power amount is 20 kW and the non-green power amount is 40 kW, and 30 kW is allocated to the storage amount, a process of using 20 kW of the green power amount and 10 kW of the non-green power amount as the excess power, and allocating the remaining 30 kW of the non-green power amount to storage is added.

[0146] When using the storage amount exceeding the storage amount to be ensured in process 231 as the excess power, a process of preferentially using green power as the excess power is added. For example, when 10 kWh of green power and 10 kWh of non-green power are stored in the storage unit, and the storage amount to be ensured is 10 kWh, a process of using 10 kWh of green power as the excess power is added.

[0147] When supplying power from a substation where excess power occurs to a substation where power shortage occurs in process 108, a process of preferentially supplying non-green power is added. For example, at 8:30:00, when a total of 20 kW of excess power, including 10 kW of green power and 10 kW of non-green power, occurs at substation 71, and a power shortage of 10 kW occurs at substation 74, substation 71 adds a process of supplying 10 kW of non-green power to substation 74.

[0148] When supplying the power of the power generation device 50 to the substation group 70 in process 109, a process of preferentially supplying non-green power is added. For example, at 8:30:00, when the power generation device 50 generates 50 kW of green power and 50 kW of non-green power, and a power shortage of 80 kW occurs in the substation group 70, the power generation device 50 adds a process of supplying 50 kW of non-green power and 30 kW of green power to the substation group 70.

[0149] By the above processing, the surplus power generated at each substation even after the completion of Process 108, and the green power in the excess power generation amount where the power generation amount of the power generation device 50 exceeds the consumption amount of the substation group 70 in Process 109 are maximized. The power distribution plan creation unit 13 can create a power distribution plan and perform transaction management, distribute the surplus power generated at each substation and the excess power generation of the power generation device 50 to the market transaction unit, and the market transaction unit 90 can exchange the distributed power for valuable assets through market transactions.

[0150] Thereby, by distinguishing power into high-value green power and non-green power that is not, and preferentially trading green power in market transactions, the valuable assets to be acquired can be maximized.

[0151] The data flow of this embodiment will be described with reference to the data flow diagram of FIG. 13A. Note that the parts common to Embodiment 1 and Embodiment 5 will be omitted from the description.

[0152] The power generation amount / consumption amount prediction unit 12 transmits the power generation amount / consumption amount prediction value data for power distribution planning to the power distribution plan creation unit 13. The power generation amount / consumption amount prediction value data for power distribution planning includes at least the predicted values of the power generation amount and consumption amount at each time in the jurisdiction of each substation, and further includes the amount of green power and the amount of non-green power in the power generation amount.

[0153] The power distribution plan creation unit 13 acquires the power generation amount / consumption amount prediction values from the power generation amount / consumption amount prediction unit 12, creates a power distribution plan for each substation, and transmits the power distribution plan data to each substation.

[0154] The power distribution plan data includes at least the consumption ratio equivalent, the energy storage ratio equivalent, the discharge amount, the power transfer amount and the transfer destination, the received power transfer amount and the transfer source, the external power procurement amount, and further includes the supply amount to the market transaction unit.

[0155] In addition, the consumption ratio equivalent, the energy storage ratio equivalent, the discharge amount, the power transfer amount, the received power transfer amount, the external power procurement amount, and the supply amount to the market transaction unit have respective values for green power and non-green power.

Explanation of Reference Numerals

[0156] 1…Distribution planning system 2…Superior power system 3…Power system between substations 10…Distribution planning device 11…Train diagram simulation unit 12…Power generation / consumption prediction unit 13…Distribution plan creation unit 14…Distribution plan transmission unit 15…Processing unit 16, 21, 31…Storage device 20…Train diagram management device 30…Data acquisition device 40…Network 50…Power generation device 60…External power source 65…Superior energy storage unit 70…Substation group 71, 74…Substation 72, 75…Distribution control unit 73, 76…Energy storage unit 81, 83…Power generation device 82, 84…Power consumption location 90…Market trading unit 1101…Train number 1102…Station 1103…Arrival time 1104…Departure time 411…Train diagram 421~423…Simulation conditions 431~433…Simulation results 511, 512…Train diagram simulation results 711~713…Power generation / consumption prediction conditions 721~723…Power generation / consumption prediction values 811~819…Power generation / consumption prediction values 821…Power generation / consumption prediction value for distribution plan 1201…Time 1202…Power generation amount 1203…Consumption amount 1302…Consumption ratio equivalent 1303…Energy storage ratio equivalent 1304…Surplus power amount 1305…Power flow 1306…Recipient 1307…Power shortage 1308…Discharge power 1309…Received power 1310…Supplier 1311…Stored power 1312…Required stored power 2001~2003…Predicted power generation and consumption

Claims

1. A power distribution plan creation device for creating a power distribution plan in a railway business, a power generation amount / consumption amount prediction unit that acquires the power generation amount and consumption amount in a first jurisdiction range under the jurisdiction of a first substation and the power generation amount and consumption amount in a second jurisdiction range under the jurisdiction of a second substation; based on the power generation amount and consumption amount in the first jurisdiction range under the jurisdiction of the first substation, calculates the surplus power amount of the first substation, and based on the power generation amount and consumption amount in the second jurisdiction range under the jurisdiction of the second substation, calculates the power shortage amount of the second substation, and when there is surplus power at the first substation and a power shortage at the second substation, creates a power distribution plan for supplying power from the first substation to the second substation; A power distribution plan creation device comprising:

2. In the power distribution plan creation device according to claim 1, the power distribution plan creation unit calculates the power shortage within a predetermined time based on the power generation amount and consumption amount in the first jurisdiction range under the jurisdiction of the first substation, calculates the calculated power shortage as the power storage amount to be secured in a storage battery included in the first jurisdiction range, and when the power generation amount in the first jurisdiction range exceeds the power consumption amount within the predetermined time, stores power in the storage battery, and when the stored power amount in the storage battery becomes equal to or more than the calculated power storage amount to be secured, creates the power distribution plan for supplying power from the first substation to the second substation.

3. In the power distribution plan creation device according to claim 1, A power distribution plan creation device comprising a power distribution plan transmission unit that transmits the adjusted power distribution plan to a substation.

4. In the power distribution plan creation device according to claim 1, the prediction result of the power generation amount / consumption amount is obtained by the power generation amount / consumption amount prediction unit at a predetermined time width or a predetermined time interval.

5. In the power distribution plan creation device according to claim 1, A power distribution plan creation device that predicts a power procurement cost required for procuring power, and the power distribution plan creation unit creates a power distribution plan that minimizes the power procurement cost.

6. In the power distribution plan creation device according to claim 1 , A power distribution plan creation device that predicts the amount of electricity required for running a specified section, adds a new train to a timetable when surplus electricity occurs at a substation that has jurisdiction over the specified section, and creates a power distribution plan for the timetable after the new train has been added, by the power distribution plan creation unit.

7. In the power distribution plan creation device according to claim 1 , An electricity distribution plan creation device in which the electricity distribution plan creation unit creates an electricity distribution plan that maximizes the amount of valuable assets acquired through electricity market transactions by predicting an exchange rate between electricity and valuable assets.

8. The power distribution plan creation device according to claim 7, The power distribution plan creation device predicts an exchange rate between the valuable asset and other valuable assets, and the power distribution plan creation unit creates a power distribution plan that maximizes the amount of the other valuable assets acquired.

9. In the power distribution plan creation device according to claim 1 , Electricity consists of green electricity, which does not emit greenhouse gases when generated, and non-green electricity, which does emit greenhouse gases, and the green electricity is traded preferentially in the market, and the distribution plan creation unit creates a distribution plan that maximizes the valuable assets acquired through electricity market trading.

10. A power distribution plan creation system comprising: the power distribution plan creation device according to claim 1; a diagram management device that manages a diagram; and a data acquisition device that acquires data.

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