JP6444633B2 - Power facility capacity control system - Google Patents

Description

  The present invention relates to a power facility capacity control system, and more particularly to a power facility capacity control system that suppresses and controls peak power due to a train traveling in the same power feeding section of a power facility. In the present specification, “electric power facility” refers to a facility for supplying electric power, such as a substation or a power plant.

  In recent years, the amount of electric power supplied to trains has increased due to high-density operation of trains. Each railway company is taking measures to ensure that the peak power generated during commuting rush does not exceed the capacity of the power facility owned by the railway. There is a potential risk that the power supply will go down.

  Therefore, energy saving measures for reducing electric power energy in railways have been proposed. For example, there is a proposal of a regenerative brake vehicle that has a regenerative brake mechanism that converts braking energy into electric energy during deceleration and that effectively uses regenerative power generated during deceleration. Various studies have been conducted on the reduction of electric power energy in this railway.

  For example, Patent Literature 1 discloses a train operation control device that saves energy by appropriately controlling train operation without providing energy-saving equipment. Here, a storage device that stores data such as the passing time, position, and speed limit of checkpoints on the train track, train position detection device, train speed detection device, and detected current train position and checkpoint position data Calculate the distance from the checkpoint to the checkpoint, calculate the predicted checkpoint passage time based on the calculated value, compare the calculated predicted passage time with the passage time data on the driving schedule, and when the predicted passage time is earlier than the passage time An on-board device equipped with a processing device that creates an appropriate speed pattern that suppresses power consumption is installed on each train, and the train is controlled by checking the speed detected by the train speed detector with the created speed pattern. It is described that.

  On the other hand, automatic train control devices (ATC) have become widespread. The ATC is a system in which the train vehicle automatically decelerates the overspeed. In other words, when the speed exceeds the specified speed, the vehicle automatically decelerates to the specified speed range without a driver, preventing rear-end collision with the preceding vehicle and realizing stable brake control without impairing the ride comfort. Device. Various techniques have been proposed for this ATC.

  For example, Patent Document 2 discloses an on-board device suitable for detecting the speed and position of a vehicle on the ground device side in real time and with high accuracy, and a vehicle control device using the same. Here, the axle rotation detector generates a pulse signal proportional to the rotational speed of the vehicle wheel. The on-vehicle signal processing device generates a vehicle information signal of the host vehicle from the pulse signal supplied from the axle rotation detector, and transmits the signal to the ground device. It is described that the ground device calculates the position and speed of the train in real time based on the signal, and transmits the result as train control information to the vehicle behind.

JP 2000-198444 A JP 2008-162556 A

  For example, during commuting rush hours, when the schedule is disrupted due to a disaster or traffic accident, the train driving the route temporarily stops, and when the trains simultaneously power up due to the recovery of the disaster or traffic accident, May be consumed and the set peak power may be exceeded. And thereby, the protection interruption | blocking by overcurrent will be performed in electric power facilities etc. That is, there is a risk that the power supply is stopped due to an unexpected situation.

  On the other hand, it is possible to simply increase the capacity of an electric power facility in anticipation of this risk, but it is not economical because a huge investment in the electric power facility is required. In addition, the increase in power consumption results in an increase in carbon dioxide emissions, leading to the problem of destruction of the global environment.

  The purpose of the present application is to solve such problems, and to suppress and control the peak power generated when the maximum number of trains travels in the same power train section of the power facility by a quick and reliable means, thereby reducing the power facility capacity. It is to provide a facility capacity control system.

In order to achieve the above object, a power facility capacity control system according to the present invention includes a control device for a train that runs in the same signal control section, and a power facility that monitors the amount of retrace current in a feeder section that overlaps the section. And an ATC device that transmits and receives via the control device and a signal system, and the ATC device transmits a command related to a train speed in response to the variation in the return current.

  With the above configuration, the power facility capacity control system transmits a command related to the speed of the train to the train traveling in the power distribution section of the power facility from the change in the current detected by the ATC device by detecting the power facility return current. Thereby, the peak power generated when the maximum number of trains travels in the same power feeding section of the power facility can be controlled and the maximum electric capacity of the power facility can be reduced.

  Further, the power facility capacity control system transmits a command to a train traveling in the same power transmission section of the power facility by utilizing an existing ATC signal system. Thereby, it is possible to suppress and control the peak power generated when the maximum number of trains travels in the same power transmission section of the power facility by quick and reliable means.

  In addition, the power facility capacity control system is configured to prevent simultaneous start-up of the control facility via the signal system when the amount of return current reaches a preset value. It is preferable to transmit a command to prohibit power running. As a result, for example, during a commuting rush, the schedule will be disrupted due to a disaster or traffic accident, etc., and the train that drives the route will stop temporarily, and then the powering prohibition command will be sent if the disaster or traffic accident recovers In this way, the trains can simultaneously power up and power is consumed instantaneously, and a situation where the set peak power is exceeded can be avoided. Furthermore, this command can be transmitted quickly and reliably via the ATC signal system.

  In addition, the power facility capacity control system prevents the simultaneous start-up of the power facility via the signal system to the control device when the amount of return current reaches a preset value. It is preferable to transmit a command for a startable time zone or a command for suppressing a power running current limit value for train control. Thus, for example, during a commuting rush, when the schedule is disrupted due to a disaster or traffic accident, the train driving the route temporarily stops, and the disaster or traffic accident recovers, a command for the startable time zone is issued. By transmitting or transmitting a control command for the train running power limit value, it is possible to avoid a situation where the trains simultaneously power and consume power instantaneously and exceed the set peak power. Further, this command can be transmitted by simple means via the ATC signal system.

  Further, the power facility capacity control system assigns the modulation frequency to one wave when the power facility is an analog ATC device, and assigns the command as bit information when the power facility is a digital ATC device. It is preferable to transmit to the control device. This makes it possible to transmit information easily and with high accuracy using either an existing ATC system or a digital ATC system by utilizing an existing ATC system.

The control system of the power facility capacity has a terrestrial base station for transmitting and receiving said control device via a wireless signal system, processor terrestrial radio base stations, the same signal control from the fluctuation of the return current amount It is preferable to send a command regarding the speed of each train to the trains in the section via the signal system. As a result, in the case of a wireless signal system, the processing unit of the terrestrial radio base station and the control device of each train can be bidirectionally transmitted by the signal system. Coordination with the facility power monitoring and train operation management system can be omitted, and a speed-related command can be transmitted to each train .

  In addition, the power facility capacity control system integrates the load of power received by the wireless signal system from the on-board devices of a plurality of trains for which the processing unit has activated the same signal control section, and wirelessly transmits to the on-board device. It is preferable to transmit a command for a startable time zone or a command for suppressing a power running limit value through an expression signal system. As a result, it is possible to avoid a situation where the trains simultaneously power up and power is instantaneously consumed, and the set peak power is exceeded.

  In addition, the power facility capacity control system allows the terrestrial radio base station to continue starting at the specified power running limit value for the train that was first started, and for the train that was started after that, It is preferable to send a command to sequentially reduce the power running limit value in accordance with. As a result, it is possible to avoid a situation where the trains simultaneously power up and power is instantaneously consumed, and the set peak power is exceeded.

  Further, the power facility capacity control system preferably transmits a command to recover the reduced power running limit value when the ground radio base station receives the power running notch-off information from the train that has activated the same signal control section. In this way, the power consumption can be reduced more finely by sending instructions according to the progress of the power consumption of each train.

  As described above, according to the power facility capacity control system according to the present invention, the peak power generated when the maximum number of trains travels in the same power transmission section of the power facility is controlled and controlled by a quick and reliable means. It is possible to provide a power facility capacity control system that reduces the power facility capacity.

It is explanatory drawing which shows schematic structure in the case of the conventional signal system as one Embodiment of the control system of the electric power facility capacity | capacitance which concerns on this invention. It is explanatory drawing which showed the structural example of the on-board apparatus and vehicle upper side corresponding to FIG. It is explanatory drawing which shows schematic structure in the case of a radio | wireless signal system as one embodiment of the control system of the electric power facility capacity | capacitance which concerns on this invention.

(Method in conventional signal system)
Hereinafter, an embodiment of a power facility capacity control system according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows a schematic configuration in the case of a conventional signal system as one embodiment of a power facility capacity control system 1 according to the present invention. 2 shows a configuration example of the on-board device and the upper side of the vehicle corresponding to FIG. Since the present invention is applied to both a conventional signal system and a wireless signal system, each will be described.

  As shown in FIG. 1, the power facility capacity control system 1 determines the amount of retrace current in train control devices 7a and 7b of trains 18 and 19 traveling in the same signal control section, and in the feeder section overlapping with this section. The power facility 2 to be monitored, the control devices 7a and 7b of the trains 18 and 19, and the ATC device 10 that transmits and receives via a signal system are provided. In the present embodiment, the same signal control section (same equipment control range) and the power transmission section of the ATC device 10 are overlapped ranges, but the present invention is applicable even if there is a range where they do not overlap. Moreover, in this embodiment, although the train which drive | works the inside of a power train division is two cars, A train 18 and B train 19, for description, this system is not limited to the number of trains.

  The power facility 2 refers to a facility that supplies power such as a substation or a power plant. The power facility 2 is connected to the overhead line 11 and the rail 12 and monitors the return current to the power facility 2 by detecting the amount of negative current using the current detector 3 or the like. Then, the ATC device 10 is notified of the variation in the return current amount.

  The ATC device 10 can detect which section each train 18, 19 is traveling by detecting the train of the ATC system. As an embodiment, as shown in FIG. 1, the traveling state and positional relationship of the A train 18 and the B train 19 in the same signal control section (same device control range) are set. The change in current shown in FIG. 1 is in the case of an induction motor drive vehicle or the like by VVVF control, and in the case of a DC motor having a starting resistance, it changes in a unit step shape.

When the succeeding B train 19 performs power running after the preceding A train 18 performs power running, the CEU (ATC economic operation control unit) of the power facility 2 detects the fluctuation of the current amount. And the instruction | command regarding the speed of each train 18 and 19 is transmitted to the control apparatus 7a, 7b of each train 18,19. This command includes, for example, a command for prohibiting power running, a command for a startable time zone, a command for suppressing a power running current limit value for train control, and the like. The commands relating to the speeds of these trains 18 and 19 will be described together with the graph in FIG. In this graph, the horizontal axis represents time (t), and the vertical axis represents current (i). The graph shows the power running notch situation (ia) of the A train 18 for each hour, the power running notch situation (ib) of the B train 19 for each hour, and the total value (ia + ib) of the power running notch situation of the A train 18 and the B train 19 for each hour. )It is shown. The current value on the vertical axis indicates the maximum current setting value (A ₀ ) and the power running cutoff setting value (A ₁ ).

The power facility 2 is shown in (1) in FIG. 1 in order to prevent simultaneous activation via a signal system when the amount of return current reaches a preset powering cutoff setting value (A ₁ ). A command to prohibit power running is transmitted to the control device 7a of the A train 18 via the ground ATC transmission unit 4. The B train 19 is transmitted by superimposing the signal (1) from the ground ATC transmitter 4 on the travel permission signal of 70 km / h. When the on-board device side of the B train 19 receives the signal (1), the on-board ATC receiving unit 5 decodes the power running cutoff signal to the on-board ATC control unit 6 as shown in FIGS. Let When the power running cutoff command (1) is decoded, the power running command from the master controller 14 to the main control device 9 is shut off by the relay 13 to forcibly shift to coasting. In the CEU, the current is once reduced by forced notch-off, but continues to output (1) for a certain time. If the A train 18 is notched off during the lapse of the predetermined time, the current is greatly reduced. Therefore, the CEU generates a forced notch-off release command at this change point. Then, the forced notch-off is canceled by the signal (2) shown in FIG. And as shown in the timing of (3) shown in FIG. 1, the B train 19 can be powered.

With these series of operations, the amount of current used by the trains 18 and 19 can prevent the power facility 2 from exceeding the maximum current set value (A ₀ ). In addition, which train the detected initial current belongs to is appropriately determined by tracking by ATC train detection and current comparison.

Moreover, when the amount of return current reaches the preset powering cutoff value (A ₁ ), the power facility 2 uses a signal system for the control devices 7a and 7b of the A train 18 or the B train 19. In order to prevent simultaneous activation, a command for a startable time zone or a command for suppressing a power running current limit value for train control is transmitted.

  Here, the power facility 2 assigns one modulation frequency in the case of an analog ATC device, and assigns it as bit information in the case of a digital ATC device. 19 to the control devices 7a and 7b.

(Method in wireless signal system)
FIG. 3 shows a schematic configuration in the case of a wireless signal system as one embodiment of the power facility capacity control system 1 according to the present invention. Even in the case of a wireless signal system, the power facility capacity control system 1 can be configured as in the conventional wireless system.

  The power facility capacity control system 1 in the wireless signal system includes the power facility 2, the control devices 7a and 7b of the trains 18 and 19 traveling in the same signal control section, and the control devices 7a and 7b via the wireless signal system. It is comprised from the processing part 16 of the ground radio base station 15 which transmits / receives.

The power facility 2 refers to a facility that supplies power such as a substation or a power plant. The power facility 2 is connected to the overhead line 11 and the rail 12 to detect and monitor the return current to the power facility 2 with a current detector 3 or the like as shown in FIG . Then, the fluctuation of the return current amount is notified to the processing unit 16 of the terrestrial radio base station 15.

The fact that the A train 18 and the B train 19 in the same signal control section are activated is transmitted from the on-board devices of the A train 18 and the B train 19 to the processing unit 16 of the wireless signal system. The processing unit 16 that has received this signal integrates the load of power and transmits it as load information to the A train 18 and the B train 19 in the same communication area. And the process part 16 transmits the instruction | command regarding the speed of each train 18 and 19 shown below to each on-vehicle apparatus via a radio | wireless signal system. As a result, the amount of current used by the trains 18 and 19 can prevent the power facility 2 from exceeding the maximum current set value (A ₀ ).

  As shown in FIG. 3, the terrestrial radio base station 15 continues the activation at the power running current limit value defined for the A train 18 that is activated first ((1) in FIG. 3). The assumed starting current exceeds the specified value by the B train 19 that is started thereafter ((2) in FIG. 3). Then, a command for sequentially reducing the power running limit value is transmitted according to the train formation amount that has been activated ((3) in FIG. 3).

  Furthermore, the ground radio base station 15 receives power running notch-off information from the A train 18 that has activated the same signal control section ((4) in FIG. 3). Then, a command to recover the reduced power running limit value is transmitted to the B train 19 ((5) in FIG. 3). And the B train 19 cancels a forced notch-off ((6) in FIG. 3).

  The configuration, shape, size, and arrangement relationship described in the above embodiments are merely schematically shown to the extent that the present invention can be understood and implemented. Therefore, the present invention is not limited to the described embodiments, and can be variously modified without departing from the scope of the technical idea shown in the claims.

  1 power facility capacity control system, 2 power facility, 3 current detector, 4 ground ATC transmitter, 5 on-vehicle ATC receiver, 6 on-vehicle ATC controller, 7, 7a, 7b train control device, 8 power receiver, 9 main control device, 10 ATC device, 11 overhead wire, 12 rail, 13 relay, 14 master controller, 15 ground radio base station, 16 processing unit, 18 A train, 19 B train, 20 power control unit.

Claims (8)

A control device for trains traveling in the same signal control section;
A power facility for monitoring the amount of retrace current in the power transmission section overlapped with the same signal control section;
An ATC device that transmits and receives via the control device and a signaling system,
The said ATC apparatus transmits the command regarding the speed of a train with respect to the fluctuation | variation of the said return current amount to the said control apparatus of the said train, The control system of the electric power facility capacity | capacitance characterized by the above-mentioned . A control system of a power facility capacity according to claim 1, wherein the power facility, when said return current amount reaches the predetermined set value, the signal system to the control device A power facility capacity control system that transmits a power running prohibition command to prevent simultaneous activation via A control system of a power facility capacity according to claim 1, wherein the signal system to the power facility, when said return current amount reaches a preset the set value, the control device A system for controlling the capacity of an electric power facility, which transmits a command for a startable time zone or a command for suppressing a power running current limit value for train control in order to prevent simultaneous start via   The power facility capacity control system according to any one of claims 1 to 3, wherein the power facility is a digital ATC device by allocating one modulation frequency in the case of an analog ATC device. The power facility capacity control system is characterized in that the command is transmitted to the control device by allocating as bit information. The power facility capacity control system according to claim 1,
A terrestrial radio base station that transmits and receives with the control device via a wireless signal system,
Processing unit of the ground radio base station, the relative return current amount train same signal controlling the interval from changes in, characterized by transmitting a command related to the velocity of each train via the signal system Power facility capacity control system. A control system of a power facility capacity according to claim 5, wherein the processing unit integrating the load of power received from a plurality of trains onboard apparatus that started the same signal control section by the wireless signal system And the control system of the electric power facility capacity | capacitance which transmits the instruction | command of the time zone which can be started or the instruction | command of suppression of a power running limit value to the said on-board apparatus via the said wireless signal system. It is a control system of the electric power facility capacity | capacitance of Claim 5 or 6, Comprising: The said terrestrial radio | wireless base station continues starting by the power running current limit value prescribed | regulated to the said train started first, and started after that wherein the train control system of the power facility capacity, characterized by transmitting a command to reduce successively the power running current limiting value according to the knitting of the train started. A control system of a power facility capacity according to any one of claims 5 to 7, wherein the ground radio base station, the power running with reduced upon receiving a power running Notchiofu information from the train started the same signal control section A system for controlling the capacity of an electric power facility, which transmits a command for restoring a current limit value.

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