JP4613743B2 - Switchboard for electric railway substation - Google Patents

Description

  The present invention relates to a switchboard that houses control equipment for electric railway substations, and in particular, reduces wiring in the switchboard.

  In the recent installation work of distribution substations for electric railway substations, since there are few new installations of electric railway substations, the use of existing substation buildings as they are is increasing only the distribution board. In such a distribution board renewal construction, first, a new distribution board is installed in an empty space of the existing substation, and the existing distribution board is removed after an installation test and operation start of the new distribution board. Here, since the new distribution board generally has a higher function than the existing distribution board, the number of control devices accommodated tends to increase.

  In the conventional technology, control devices are arranged before and after the inside of the switchboard in response to an increase in the number of control devices housed in such a switchboard. Furthermore, the wiring space which connects the front and back in a switchboard is provided, and the wiring which connects the control equipment of front and back is especially let through the electricity supply space, and the wiring is shortened (for example, refer patent document 1). ).

JP 2002-262413 A (FIGS. 1 and 2)

  By the way, it cannot be said that the empty space of many existing substations is sufficient, and the new distribution board is also required to save space. However, the conventional technique has a problem that it becomes difficult to pass a necessary number of wires through the energized space when the energized space is reduced with the space saving of the new distribution board.

  The present invention has been made to solve the above-described problems, and even when the current-carrying space is reduced with the space saving of the new distribution board in the renewal of the distribution board for electric railway substations, the control equipment is To provide a distribution board for electric railway substations that reduces the amount of wiring in the distribution board so that sufficient connections can be secured.

The distribution board for the railway substation in this invention is a plurality of control devices for controlling the railway substation, a communication line for connecting these control devices and transmitting information periodically, and reading the state of the control device, Performs a control calculation to switch the power supply source from the railway substation, and uses the result of the control calculation as a control signal to transmit information from the control device via the communication line. By executing it before the start and starting a series of processing immediately after the completion of periodic transmission, it is accompanied by periodic information transmission while the train is moving through the section where the power supply source from the railway substation is switched. And an arithmetic unit that performs a recovery process on the information delay that occurs.

  According to the present invention, even when the energization space is reduced due to the space saving of the new distribution board in the renewal of the distribution board for the railway substation, the amount of wiring in the distribution board is reduced so that the connection between the control devices can be sufficiently secured. It is possible to provide a distribution board for electric railway substations.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram for explaining an electric railway transformation monitoring and control system in the first embodiment. The electric railway substation 100 receives electricity from the electric power company substation 200, transforms it to an appropriate level, and supplies electricity to the train 300. Electric power reception and transformation is performed by the power receiving and transformation equipment 5 such as a circuit breaker, a disconnecting switch, a transformer, and the like. Further, the switchboard 1 receives a control command from the central command 20 and plays a role of notifying the central command 20 of the monitoring control status of the power receiving / transforming device 5.

  FIG. 2 is a configuration diagram for explaining a distribution board for a railway substation in the first embodiment. A distribution board (distribution panel) 1 for a railway substation includes a calculation unit 2 including a central processing unit (CPU) 2A and an input / output unit (I / O unit) 2B, and a plurality of control devices 3 for controlling the railway railway substation. And the power receiving / transforming device interface 4 are housed.

  The I / O unit 2 </ b> B, the control device 3, and the power receiving / transforming device interface 4 each have a communication interface 10, and are connected by a communication line 9 via these communication interfaces 10. As the communication line 9, for example, a field network communication line is used, and information is periodically transmitted between the I / O unit 2 </ b> B, the control device 3, and the power receiving / transforming device interface 4. The power receiving / transforming device interface 4 is connected to the power receiving / transforming device 5 via a plurality of electric wires (in-panel wiring) 7A, a terminal block 6, and a plurality of electric wires (outside panel wiring) 7B.

  Here, an information delay that occurs when information is periodically transmitted between the arithmetic unit 2, the plurality of control devices 3, and the power receiving / transforming device interface 4 will be described. The computing unit 2 reads the state of the power receiving / transforming device 5 and the state of the control device 3 and outputs the result of the control computation to the power receiving / transforming device 5 as a control signal. Even if there is a change in the state of the power receiving / transforming device 5 or the control device 3, information is periodically transmitted.

  By the way, the electric railway substations are installed along the track at intervals of, for example, 10 to 20 km, and the train on the railway is operated by power transmission from the nearest electric railway substation. FIG. 3 is a schematic diagram of electric railway substation power switching for transmitting power to a train.

  The distribution substation switchboard 1 for electric railway substations outputs a control signal to the circuit breaker 55 or the like as the receiving / distributing equipment 5, and the power supply source to the train 300 is, for example, from the first electric railway substation 100 to the second electric railway substation 100. Control to switch quickly. This control needs to be performed while the train 300 is traveling in the switching section. At this time, if an information delay occurs between the arithmetic unit 2, the control device 3, and the power receiving / transforming device interface 4, the switching control of the power supply source is caused. If the information delay is large, switching of the power supply source to the train 300 fails. In this case, since the first railway substation 100 and the second railway substation 100 are different power sources, the pantograph, the overhead line, the first and second railway substations 100 are affected, and the operation of the train 300 is performed. Troubles.

  Therefore, in this embodiment, the arithmetic unit 2 performs information delay recovery processing. Specifically, the processing is optimized so that information input, control calculation, and information output can be executed from the completion of periodic transmission to the start of the next periodic transmission, and a series of processing start is performed immediately after the completion of periodic transmission. By starting, control processing delay due to periodic transmission is suppressed. In this way, it is possible to prevent a failure in switching control of the power supply source in the railway substation switching section, so that the operation of the train 300 is not hindered.

  Furthermore, according to this embodiment, since the control devices 3 in the switchboard 1 are connected by the communication line 9, the wiring that conventionally required a large number of wires is replaced with a single communication line. The amount of wiring inside can be reduced. Therefore, even when the energization space is reduced with the space saving of the new distribution board in the renewal of the distribution board for electric railway substations, the connection between the control devices 3 can be sufficiently ensured. In addition, the control device 3 can be newly arranged using the space used for the conventional wiring.

Embodiment 2. FIG.
FIG. 4 is a configuration diagram of a distribution board for a railway substation for explaining the second embodiment. This embodiment is a modification in which the power receiving / transforming device interface 4 in the first embodiment is provided outside the switchboard 1. The power receiving / transforming device interface 4 is housed in a remote control panel 11 provided in the vicinity of the power receiving / transforming device 5. In the switchboard 1, at least one control device 3 includes a communication interface 10 that can be coupled to the power receiving / transforming device interface 4.

  According to this embodiment, since the power receiving / transforming device interface 4 is provided outside the switchboard 1, further space saving of the switchboard 1 can be achieved. Further, since the power receiving / transforming device interface 4 and the power receiving / transforming device 5 can be arranged close to each other, the external wiring 7B can be shortened. Although the communication line 9 connecting the power receiving / transforming device interface 4 and the control device 3 becomes long, the external wiring 7B is composed of a plurality of wires, so that the total wiring amount can be reduced.

1 is a schematic diagram of a railway substation monitoring and control system for explaining Embodiment 1; FIG. It is a block diagram of the switchboard for electric railway substations for describing Embodiment 1. FIG. It is a schematic diagram of electric railway substation electric power switching for demonstrating Embodiment 1. FIG. It is a block diagram of the switchboard for electric railway substations for describing Embodiment 2. FIG.

Explanation of symbols

1 Distribution board for electric railway substation, 2 operation unit, 3 control equipment, 4 receiving / transforming equipment interface, 5 receiving / transforming equipment, 9 communication line, 10 communication interface, 100 railway substation.

Claims (2)

A plurality of control devices for controlling the railway substation, a communication line for connecting these control devices and transmitting information periodically, and reading the state of the control device, and supplying power from the railway substation A control calculation for switching the source is performed, and a series of processes for transmitting information from the control device via the communication line as a control signal using the result of the control calculation is performed from the completion of the periodic transmission to the start of the next periodic transmission. In the middle, the series of processing start is started immediately after the completion of the periodic transmission, so that the period of transmission of the information is periodically transmitted while the train is traveling through the section for switching the power supply source from the railway substation. A distribution board for a railway substation, comprising: an arithmetic unit that recovers information delay that occurs. The distribution board for a railway substation according to claim 1, wherein the at least one control device includes a communication interface that can be coupled to a receiving / transforming equipment interface provided outside the distribution board for the railway substation.

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