JP6812314B2 - Railway system controls and methods - Google Patents

Description

The present invention relates to a control device and method for a railway system that operates by receiving electric power from a power supply facility such as a substation.

In a trolleybus system or railway system in which a vehicle runs under the supply of electric power, if a part of the electric power supply equipment responsible for supplying electric power becomes inoperable, the load on other operating electric power supply equipment increases. It is conceivable to do.

In such a case, the overload state of the substation, which is the power supply facility, is determined, and when the overload state is determined, discharge is performed from the ground power storage device existing in the same power grid or the power storage device provided in the vehicle. For example, Patent Document 1 discloses a system in which the protection operation of a substation, which is a power supply facility, is suppressed and the power supply facility is operated stably.

Japanese Unexamined Patent Publication No. 2011-79454

However, in the method described in Patent Document 1, the charge amount of the power storage device is not checked, and when the charge amount of the power storage device is exhausted, the demand cannot be satisfied. This possibility is particularly high when the number of substations in operation is less than half of the total. As a result, the vehicle will stop between stations, leading to a decline in passenger service. In order to avoid such an event, it is required to make maximum use of the power supply equipment and the power storage device in operation and to carry all the vehicles stopped between stations of the same power grid to the adjacent station.

From the above, in the present invention, when a part of the power supply facility becomes inoperable, a railway system that enables a vehicle stopped between stations on the same line to be driven to an adjacent station. It is an object of the present invention to provide a control device and a method.

From the above, in the present invention, "a control device for a railway system for supplying power to a vehicle from a plurality of substations and a ground power storage device via an overhead wire, and the operating status, voltage, and ground power storage of the plurality of substations. Equipped with a power management device that manages the amount of charge of the device and a ground power storage device that discharges according to the discharge current command from the power management device, the power management device has some of the multiple substations in an inactive state. At that time, the operating substation closest to the ground power storage device is extracted, the discharge current command given to the ground power storage device is set according to the voltage of the substation, and the discharge amount of the ground power storage device is determined. It is a control device for a railway system characterized by the above.

Further, in the present invention, "a control method for a railway system for supplying power to a vehicle from a plurality of substations and a ground power storage device via an overhead wire, and the ground power storage device is a method for supplying electric power to and from the overhead wire in a normal operation state. And when a part of multiple substations goes out of operation, the amount of discharge is determined according to the terminal voltage of the operating substation closest to the ground power storage device. It is a characteristic railway system control method. "

According to the present invention, it is possible to drive a vehicle stopped between stations on the same line to an adjacent station.

The figure which shows the structural example of the control device of the railroad system which concerns on Example 1 of this invention. The figure which shows the structural example of the electric power management apparatus 105 which concerns on Example 1 of this invention. The figure which shows the processing flow example of the discharge determination part 201 in the power management apparatus which concerns on Example 1 of this invention. The figure which shows the example of the graph of the discharge start voltage VX and the discharge continuation determination voltage VC with respect to the charge amount of the ground power storage device which concerns on Example 1 of this invention. The figure which shows the processing content example of the discharge current command determination part 202 which concerns on Example 1 of this invention. The figure which shows the state from moment to moment when the control of this invention is applied to a railway system. The figure which shows the structural example of the control device of the railway system which concerns on Example 2 of this invention. The figure which shows the structural example of the electric power management apparatus 105 which concerns on Example 2 of this invention. The figure which shows the processing flow example of the discharge determination part 201 in the power management apparatus which concerns on Example 2 of this invention. The figure which shows the example of the graph of the discharge start voltage VX and the discharge continuation determination voltage VC with respect to the charge amount of the ground power storage device which concerns on Example 2 of this invention.

Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing a configuration example of a control device of a railway system for realizing the present invention.

The control device of the railway system of FIG. 1 supplies electric power to a plurality of vehicles 101A, 101B, 101C (hereinafter, the term “vehicle 101” is a general term for these) traveling on the same electric power network via an overhead wire 102. Substations 103A, 103B, 103C, 103D to be supplied (hereinafter, the term "substation 103" is a general term for these), a ground power storage device 104 for transmitting and receiving electric power, and substations 103A, 103B, 103C, 103D. Discharge current 153 with respect to the ground power storage device 104 based on the state information 151A, 151B, 151C, 151D (hereinafter, the state information 151 is a general term for these), the voltage and charge amount information 152 of the ground power storage device 104. It is composed of the power management device 105 that determines. The state information 151 includes the operating state and voltage of each substation 103.

In FIG. 1, all the substations 103A, 103B, 103C, and 103D originally supply power to a plurality of vehicles 101A, 101B, and 101C via the overhead wire 102, but here, in the power grid. Due to some accident, the substations 103C and 103D are stopped and are in an inactive state, indicating a state in which the substations 103A and 103B and the ground power storage device 104 supply electric power to the vehicle 101. As described above, in the railway system, substations 103 are provided at appropriate positions on the overhead line 102 along the extension of the overhead line 102 to supply electric power to the overhead line 102.

Further, in FIG. 1, the ground power storage device 104 is connected to the overhead wire 102 to transfer and receive electric power to and from the overhead wire 102. The control of the ground power storage device 104 in the normal state is to transfer power to and from the overhead wire 102 as appropriate by a command from the power management device 105 or by a control device in the ground power storage device 104. In the non-operating state of the substations 103C and 103D described in the above, the power management device 105 receives a command to shift to the non-operating state, and the subsequent control follows the control command from the power management device 105.

FIG. 2 shows the function of the power management device 105. The processing contents of the power management device 105 may differ before and after the occurrence of the non-operating state of the substations 103C and 103D, but at least after the occurrence, the power management device 105 operates as follows. FIG. 2 shows the processing function after the occurrence of the non-operating state of the substations 103C and 103D.

The power management device 105 of FIG. 2 is based on the state information 151 of the substation 103 and the charge amount 152 of the ground power storage device 104, and the voltage VS of the substation closest to the ground power storage device 104 among the operating substations. The discharge start voltage VX, which is a voltage for determining whether or not to discharge from the ground storage device 104, the discharge continuation determination voltage VC, which is a voltage for determining whether or not to continue discharging after the start of discharge, and the ground storage. The discharge determination unit 201 that determines the discharge command 254 for the device 104, and the discharge current command determination unit that determines the discharge current command 153 for the ground power storage device 104 from the voltage VS of the substation 103, the discharge start voltage VX, and the discharge command 254. It is composed of 202.

FIG. 3 shows the processing flow of the discharge determination unit 201 in the power management device 105. The processing step S300 for instructing the start of the processing flow of the discharge determination unit 201 is performed with reference to the occurrence of the non-operating state of the substations 103C and 103D. The occurrence of the non-operating state of the substation 103 is detected by the communication of the substation stop via communication from the substation 103, the detection by the communication blackout due to the substation stop, and the terminal voltage on the overhead wire 102 side of the substation 103. It is possible to confirm with the power management device 105 by detecting the decrease in the voltage, and it is preferable that the occurrence of this non-operating state is directly transferred to the ground power storage device 104.

In the next processing step S301 in the processing flow of the discharge determination unit 201 in the power management device 105 shown in FIG. 3, the substation 103B closest to the ground power storage device 104 while operating on the same power network is operated based on the state information 151. Select and extract the terminal voltage VS of the substation 103B. Since the start condition of the processing flow of FIG. 3 is confirmation of the occurrence of the non-operating state of the substations 103C and 103D, it is possible to specify 103B as the substation 103 closest to the terrestrial power storage device 104. Next, the process proceeds to process step S302.

In general, the ground power storage device 104 is often installed side by side in the substation 103, and in this case, it is assumed that the substation itself to be installed is in a non-operating state or in an operating state. However, any of these may be used here, and the terminal voltage of the operating substation at the nearest position other than the adjacent substation shall be monitored.

In the process step S302, the discharge start voltage VX and the discharge continuation determination voltage VC, which are the voltages for determining whether or not to continue the discharge after the start of the discharge, are determined based on the charge amount 152 of the ground power storage device 104. The discharge start voltage VX ≤ discharge continuation determination voltage VC is always established. A method for determining the discharge start voltage VX and the discharge continuation determination voltage VC will be described later with reference to FIG. Next, the process proceeds to process step S303.

In the processing step S303, the voltage VS of the substation 103B obtained in the processing step S301 is compared with the discharge start voltage VX calculated in the processing step S302, and if the substation voltage VS ≦ the discharge start voltage VX is satisfied, the process is performed. The process proceeds to step S304. If not satisfied, the process proceeds to process step S305.

In the process step S304, a discharge command is given as a discharge command 254 to the ground power storage device 104. After the processing of the processing step S304, the series of processing in the discharge determination unit 201 is completed.

In the processing step S305, the voltage VS of the substation 103B obtained in the processing step S301 is compared with the voltage VC calculated in the processing step S302, and if the voltage VS ≧ discharge continuation determination voltage VC is satisfied, the processing step S306 is performed. move on. If not satisfied, the process proceeds to process step S307.

In the process step S306, the discharge stop is given as the discharge command 254 to the ground power storage device 104. After the process of the process step S306, the series of processes in the discharge determination unit 201 is completed.

In the process step S307, the same command as the previous one is used as the discharge command 254 for the ground power storage device 104. After the process of the process step S307, the series of processes in the discharge determination unit 201 is completed.

The initial state of the discharge command 254 for the ground power storage device 104 in FIG. 3 is that the discharge is stopped.

FIG. 4 is an example of a graph of the discharge start voltage VX and the discharge continuation determination voltage VC with respect to the charge amount 152 (hereinafter referred to as SOC) of the ground power storage device 104 used in the processing step S302 of FIG. By lowering the discharge start voltage VX and the discharge continuation determination voltage VC as the charge amount SOC becomes smaller, control according to the charge amount SOC becomes possible. As a method of setting the discharge start voltage VX, the charge amount range of the ground power storage device 104 is set to SOCa to SOCb (SOCa <SOCb), the voltage at the rated output of the substation is HV, and the voltage at 200% output of the substation. When HV2 is set to, a method of setting as shown in the following equations (1), (2) and (3) can be considered.
[Number 1]
VX = (HV-HV2) / (SOCb-SOCa) × (charge amount-SOCb) + HV
... (1)
[Number 2]
VC = VX + α ... (2)
[Number 3]
α = (HV-HV2) / 2 ... (3)
The values of HV and HV2 may be arbitrarily changed if the time until all the vehicles in the middle of the station can reach the adjacent station, the area where the substation can output, and HV> HV2. For example, the HV may be the voltage at 150% output of the substation, and the HV2 may be the voltage at 250% output of the substation. Further, the discharge start voltage VX may be changed stepwise in steps of a predetermined charge amount instead of continuously. The α used for calculating the value of the discharge continuation determination voltage VC may be arbitrarily set as long as it is a value larger than 0, or may be changed according to the charge amount.

FIG. 5 is an example of a discharge current setting table used by the discharge power command determination unit 202 of FIG. The horizontal axis of the table on the matrix shows the current and previous discharge commands 254, voltage VS> discharge start voltage VX, and discharge current command 153, and the vertical axis of the table on the matrix shows four cases (case 1). In each case 4), the discharge stop and discharge commands are distinguished according to the current and previous discharge commands 254, yes and no are distinguished according to voltage VS> discharge start voltage VX, and the discharge current command 153 is supported. The idea of determining the specific size is shown.

Since the purpose of the discharge current setting table shown in FIG. 5 is to achieve both the charge amount of the ground storage device 104 and the voltage compensation, the discharge current command 153 is controlled so that the voltage VS is in the vicinity of the discharge start voltage VX. Creating.

Specifically, in case 1, regardless of the state of the previous discharge command, the discharge command is in the state of being stopped this time, and the discharge command current is set to 0 at this time. Represents control in the initial state of startup.

In case 2, when the current discharge command 254 is turned on for the first time from the previous discharge command and the current discharge command 254, voltage compensation is required, so that discharge is performed. At this time, since the effect cannot be known after discharging from the ground power storage device 104, the discharge current command 153 is set as the maximum discharge current.

Further, in case 3, when the discharge command 254 continues to be ON in the previous time and this time and the voltage VS is larger than the discharge start voltage VX, even if the discharge current command 153 is reduced, the discharge start voltage VX is near. Reduce the discharge current because it may be kept at. In the table shown in FIG. 5, the previous discharge current is multiplied by 0.5.

In case 4, when the discharge command 254 continues to be ON in the previous time and this time and the voltage VS is smaller than the discharge start voltage VX, the discharge current command 153 is small, so that the discharge current is increased as much as possible. .. In the table shown in FIG. 5, it is set to min (maximum discharge current, previous discharge current × 1.5 times). When the current becomes less than a certain value (for example, less than 10A), it may be set to 0A.

In the state of the railway system shown in FIG. 1, the state from moment to moment when this control is applied is shown in FIG.

FIG. 6 is a graph showing four state quantities, and the horizontal axis is time. The state quantities on the vertical axis are the charge amount, voltage, presence / absence of discharge command, and discharge current command of the ground power storage device 104 from the top. The second voltage from the top indicates the voltage of the substation 103B to be controlled, the discharge start voltage VX, and the discharge continuation determination voltage VC. The time when all trains have completed moving to the adjacent station is T11. Hereinafter, explanation will be given with the passage of time. Note that FIG. 6 shows the state in which the substations 103C and 103D stop at time T0 and become inactive, and the terminal voltage of the substation 103B starts to stop.

From time T0 to T1, since the voltage VS of the substation 103B is higher than the discharge start voltage VX determined by the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is not issued and the discharge current command is 0. It becomes. Further, the charge amount of the ground power storage device 104 does not change from the initial value. Case 1 of the table shown in FIG. 5 corresponds to this state.

At time T1, since the voltage VS of the substation B is lower than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, a discharge command to the ground power storage device 104 is issued. The discharge current from the case 2 of the table shown in FIG. 5 to the ground power storage device 104 is the maximum discharge current. As a result, the charge amount of the ground power storage device 104 decreases.

At time T2, since the voltage of the substation B is lower than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is continued according to the flow of FIG. Further, since the voltage of the substation B is higher than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, the discharge current from the table case 3 shown in FIG. 5 to the ground power storage device 104 is larger than the previous time. Halve. Further, since the ground power storage device 104 is discharged, the charge amount of the ground power storage device 104 is reduced.

At time T3, since the voltage of the substation B is lower than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is continued according to the flow of FIG. Further, since the voltage of the substation B is lower than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, the discharge current from the table case 4 shown in FIG. 5 to the ground power storage device 104 is larger than the previous time. It increases 1.5 times. Further, since the ground power storage device 104 is discharged, the charge amount of the ground power storage device 104 is reduced.

At time T4, since the voltage of the substation B is lower than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is continued according to the flow of FIG. Further, since the voltage of the substation B is higher than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, the discharge current from the table case 3 shown in FIG. 5 to the ground power storage device 104 is larger than the previous time. Halve. Further, since the ground power storage device 104 is discharged, the charge amount of the ground power storage device 104 is reduced.

At time T5, since the voltage of the substation B is higher than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is canceled according to the flow of FIG. Along with this, the discharge current from the case 1 of the table shown in FIG. 5 to the ground power storage device 104 becomes 0. Hereinafter, this state is continued until the time T6 when the situation changes, and the charge amount of the ground power storage device 104 does not fluctuate between the times T5 and T6.

At time T6, since the voltage of the substation B became lower than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, a discharge command to the ground power storage device 104 is issued. The discharge current from the case 2 of the table shown in FIG. 5 to the ground power storage device 104 is the maximum discharge current. As a result, the charge amount of the ground power storage device 104 decreases.

At time T7, since the voltage of the substation B is lower than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is continued according to the flow of FIG. Further, since the voltage of the substation B is higher than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, the discharge current from the table case 3 shown in FIG. 5 to the ground power storage device 104 is larger than the previous time. Halve. Further, since the ground power storage device 104 is discharged, the charge amount of the ground power storage device 104 is reduced.

At time T8, since the voltage of the substation B is lower than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is continued according to the flow of FIG. Further, since the voltage of the substation B is higher than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, the discharge current from the table case 3 shown in FIG. 5 to the ground power storage device 104 is larger than the previous time. Halve. Further, since the discharge is performed from the ground power storage device, the charge amount of the ground power storage device 104 is reduced.

At time T9, since the voltage of the substation B is lower than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is continued according to the flow of FIG. Further, since the voltage of the substation B is higher than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, the discharge current from the table case 3 shown in FIG. 5 to the ground power storage device 104 is halved from the previous time. To do. Further, since the ground power storage device 104 is discharged, the charge amount of the ground power storage device 104 is reduced.

At time T10, since the voltage of the substation B is lower than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is continued according to the flow of FIG. Further, since the voltage of the substation B is higher than the discharge start voltage VX determined from the charge amount of the ground power storage device 104, the discharge current from the table case 3 shown in FIG. 5 to the ground power storage device 104 is larger than the previous time. Halve. Further, since the ground power storage device 104 is discharged, the charge amount of the ground power storage device 104 is reduced.

At time T11, since all the vehicles have finished moving to the adjacent station, the voltage of the substation B rises to the voltage in the no-load state. As a result, since the voltage of the substation B is higher than the discharge continuation determination voltage VC determined from the charge amount of the ground power storage device 104, the discharge command to the ground power storage device 104 is canceled according to the flow of FIG. Along with this, the discharge current from the case 1 of the table shown in FIG. 5 to the ground power storage device 104 becomes 0.

As described above, the charge amount of the ground power storage device 104 is used by discharging the ground power storage device 104 while considering the voltage of the substation closest to the operating substation and the charge amount of the ground power storage device 104. It is possible to carry all vehicles to the adjacent station while keeping them within range.

In the first embodiment, the process of automatically controlling in the power management device 105 is shown, but various parameters are shown on the screen of the power management device, and the commander issues a discharge command to the ground power storage device based on the result. It may be configured to be performed. For example, of the four graphs shown in FIG. 6, the upper two graphs may be output to the screen of the power management device, and the commander may issue a discharge command.

In the second embodiment, the control device of the railway system is configured by further including the operation management device 701 in the configuration of the first embodiment.

The control device of the railway system of FIG. 7 supplies electric power to a plurality of vehicles 101A, 101B, 101C (hereinafter, the term “vehicle 101” is a general term for these) traveling on the same electric power network via an overhead wire 102. Substations 103A, 103B, 103C, 103D to be supplied (hereinafter, what is described as substation 103 is a general term for these), a ground power storage device 104 that transfers and receives electric power, and an operation that manages the presence status 751 of the vehicle 101. The voltage and charging of the management device 701, the status information 151A, 151B, 151C, 151D of the substations 103A, 103B, 103C, 103D (hereinafter, the term "state information 151" is a general term for these), and the ground power storage device 104. It is composed of a power management device 105 that determines a discharge current command 153 for the ground power storage device 104 based on the amount information 152 and the current status 751 of the operation management device 701. The state information 151 includes the operating state and voltage of each substation 103.

In FIG. 7, originally, all the substations 103A, 103B, 103C, 103D supply electric power to a plurality of vehicles 101A, 101B, 101C via the overhead wire 102, but here, in the power grid. The substations 103C and 103D are in an inactive state due to some accident, and the substations 103A and 103B and the ground power storage device 104 indicate a state in which electric power is supplied to the vehicle 101.

Further, in FIG. 7, the ground power storage device 104 is connected to the overhead wire 102 to transfer and receive electric power to and from the overhead wire 102. The control of the ground power storage device 104 in the normal state is to transfer power to and from the overhead wire 102 as appropriate by a command from the power management device 105 or by a control device in the ground power storage device 104. In the non-operating state of the substations 103C and 103D described in the above, the power management device 105 receives a command to shift to the non-operating state, and the subsequent control follows the control command from the power management device 105. Since the same numbers as those in FIG. 1 have the same numbers, detailed description thereof will be omitted.

FIG. 8 shows the function of the power management device 105 according to the second embodiment. The processing contents of the power management device 105 may differ before and after the occurrence of the non-operating state of the substations 103C and 103D, but at least after the occurrence, the power management device 105 operates as follows. FIG. 8 shows the processing function after the occurrence of the non-operating state of the substations 103C and 103D.

The power management device 105 of FIG. 8 is based on the state information 151 of the substation 103 and the charge amount 152 of the ground power storage device 104, and the voltage VS of the substation closest to the ground power storage device 104 among the operating substations. The discharge start voltage VX, which is a voltage for determining whether or not to discharge from the ground power storage device 104 and the line status 751, and the discharge continuation determination voltage VC, which is a voltage for determining whether or not to continue discharging after the start of discharge. , The discharge determination unit 801 that determines the discharge command 254 for the ground power storage device 104, the discharge current that determines the discharge current command 153 for the ground power storage device 104 from the voltage VS of the substation 103, the discharge start voltage VX, and the discharge command 254. It is composed of a command determination unit 202.

FIG. 9 shows the processing flow of the discharge determination unit 801 in the power management device 105. The processing flow of the discharge determination unit 801 is started based on the occurrence of the non-operating state of the substations 103C and 103D. The occurrence of the non-operating state of the substation 103 is detected by the communication of the substation stop via communication from the substation 103, the detection by the communication blackout due to the substation stop, and the terminal voltage on the overhead wire 102 side of the substation 103. It is possible to confirm with the power management device 105 by detecting the decrease in the voltage, and it is preferable that the occurrence of this non-operating state is directly transferred to the ground power storage device 104.

Note that FIG. 9 is the same as FIG. 3 except that the processing step S302 is replaced with the processing step S901. Therefore, the numbers of the same steps are unified and the description thereof will be omitted.

In the processing step S901 in the processing flow of the discharge determination unit 801 in the power management device 105 shown in FIG. 9, the discharge start voltage VX and the discharge after the start of the discharge are performed based on the charge amount 152 and the presence status 751 of the ground power storage device 104. The discharge continuation determination voltage VC, which is the voltage for determining whether or not to continue, is determined. The discharge start voltage VX ≤ discharge continuation determination voltage VC is always established. In the processing step S901, in order to determine the discharge start voltage VX and the discharge continuation determination voltage VC, the data shown in FIG. 10 and FIG. 4 used in the examples are used.

FIG. 10 shows the discharge start voltage VX2 and the discharge continuation determination voltage VC2 with respect to the number of existing lines. The discharge start voltage VX2 and the discharge continuation judgment voltage VC2 are increased as the number of vehicles on the line decreases, so that the frequency of use is suppressed when the number of vehicles on the line is large, and the frequency of use is increased as the number of vehicles on the line decreases. It will be possible. As a method of setting the discharge start voltage VX2, when the number of vehicles on the line is 0 to MAXTrain (MAXTrain> 0), the voltage at the rated output of the substation is HV, and the voltage at 200% output of the substation is HV2. A method of setting as shown in the following equations (4), (5) and (6) can be considered.
[Number 4]
VX2 = (HV-HV2) / (0-MAXTrain) x (number of vehicles on line-0) + HV
... (4)
[Number 5]
VC2 = VX2 + α ... (5)
[Number 6]
α = (HV-HV2) / 2 ... (6)
The values of HV and HV2 may be arbitrarily changed if the time until all the vehicles in the middle of the station can reach the adjacent station, the area where the substation can output, and HV> HV2. For example, the HV may be the voltage at 150% output of the substation, and the HV2 may be the voltage at 250% output of the substation. Further, the VX2 may be changed stepwise in steps of the number of vehicles on the line instead of continuously. The α used to calculate the value of VC2 may be arbitrarily set as long as it is a value larger than 0, or may be set differently depending on the number of vehicles on the line.

By using the smaller values of VX2 and VC2 defined as described above and VX and VX described in FIG. 4, control can be performed in consideration of the number of vehicles on the line and the charge amount of the power storage device, and even in this configuration, The effect as described in FIG. 6 of Example 1 can be obtained.

101, 101A, 101B, 101C: Vehicle 102: Overhead wire 103, 103A, 103B, 103C, 103D: Substation 104: Ground power storage device 105: Power management device 151, 151A, 151B, 151C, 151D: Substation status information 152 : Ground power storage device voltage and charge amount information 153: Ground power storage device discharge current 201,801: Discharge determination unit 202: Discharge current command determination unit VS: Substation voltage VX: Discharge start voltage 254: Discharge command 701: Operation Management device 751: Current status

Claims (7)

It is a control device for a railway system for supplying power to rolling stock from multiple substations and ground power storage devices via overhead lines.
It is equipped with a power management device that manages the operating status and voltage of the plurality of substations and the charge amount of the ground power storage device, and a ground power storage device that discharges according to a discharge current command from the power management device.
The power management device extracts an operating substation closest to the ground power storage device when a part of the plurality of substations becomes inactive, and responds to the voltage of the extracted substation. A control device for a railway system, characterized in that a discharge current command to be given to the ground power storage device is determined, and the discharge amount of the ground power storage device is determined. The control device for the railway system according to claim 1.
The operation management device is provided for managing the presence status of a plurality of vehicles traveling by receiving power from the substation, and the power management device is said to be used when a part of the plurality of substations becomes inactive. The operating substation closest to the terrestrial power storage device is extracted, and the discharge current command to be given to the terrestrial power storage device is determined according to the voltage of the substation and the vehicle presence status of the operation management device. A control device for a railway system characterized by adjusting the discharge amount of a power storage device. The control device for the railway system according to claim 2.
The power management device uses the voltage of the substation operating in a plurality of substations and closest to the ground power storage device, the vehicle presence status of the operation management device, and the charge amount of the ground power storage device. A control device for a railway system, which is characterized by adjusting the discharge amount of the device. The control device for a railway system according to any one of claims 1 to 3.
The power management device is characterized in that the discharge start voltage, which is the threshold value at which the ground power storage device discharges, and the discharge continuation determination voltage, which determines whether or not to continue discharging, are set to be lowered as the charge amount becomes smaller. The control device of the railway system. The control device for the railway system according to claim 2 or 3.
The power management device sets the discharge start voltage, which is the threshold value at which the ground power storage device discharges, and the discharge continuation determination voltage, which determines whether or not to continue discharging, to be increased as the number of vehicles on the line decreases. A characteristic rail system control device. The control device for the railway system according to claim 4 or 5.
A control device for a railway system, characterized in that a discharge start voltage and a discharge continuation determination voltage are set so that a power storage device operates for a period of time until all vehicles in the middle of a station can reach an adjacent station. It is a control method of a railway system for supplying power to rolling stock from multiple substations and ground power storage devices via overhead lines.
The terrestrial power storage device transfers power to and from the overhead wire in a normal operation state, and operates at a position closest to the terrestrial power storage device when a part of the plurality of substations becomes inactive. A method for controlling a railway system, characterized in that the amount of discharge is determined according to the terminal voltage at a substation.

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