JP5311972B2 - Formation vehicle - Google Patents

Description

  The present invention relates to a knitted vehicle composed of a plurality of vehicle units and a high voltage circuit breaker thereof.

  In a power distribution type railway vehicle that is knitted by connecting a plurality of vehicles, a power supply unit composed of main power supply devices such as a current collector, a main transformer, a main converter, etc., and an auxiliary power supply A vehicle unit system in which auxiliary equipment such as devices and air compressors are distributed and installed is adopted. For example, the main power supply devices are distributed and mounted on four vehicles, and these four vehicles are used as one vehicle unit. A plurality of vehicle units are connected to form a knitted vehicle.

  When each vehicle unit is connected to form a trained vehicle, the trained vehicle includes the same number of current collecting devices as the vehicle unit. However, since the current collector tends to be a noise source, it is preferable that the number of current collectors is small. In view of this, the number of current collectors is reduced by providing a high-voltage lead wire on the roof of the knitted vehicle and connecting each power supply unit with the high-voltage lead wire. For example, if a Shinkansen train with 10 cars has four power supply units (the same number as a vehicle unit), the four power supply units are connected by a high voltage lead-in line. A stand is sufficient. Further, since the current collector is connected by a high voltage lead-in line, the potential difference between the current collectors can be reduced. For this reason, even when a disconnection occurs, it is possible to reduce sparks that occur between the overhead wire and the current collector, which can cause radio interference and deterioration of the current collector. (See Patent Document 1 and Patent Document 2)

The high voltage lead-through between the vehicles in the vehicle unit is connected via a high voltage joint, and that between each vehicle unit is connected via a high voltage joint or a high voltage insulator. The high-voltage joint has a connection portion of the electric wire inside and covers the connection portion with an insulating coating. Therefore, the high-voltage joint has an advantage that the volume is small and it is difficult to become a noise source, but it cannot be easily separated. On the other hand, the high-voltage insulator has a large volume and mass and is likely to be a noise source. However, since the receiver for fixing the connecting portion is exposed at one end thereof, there is an advantage that the connecting portion can be easily attached and detached. For this reason, the high-voltage insulator is used for connection of a high-voltage lead-in line between vehicle units. When a fault such as a ground fault occurs in the high-voltage lead-in line, It is a place that separates (electrically cuts off) a healthy lead-through line.
In addition, power cables are routed under the floors of a plurality of vehicles constituting the formation vehicle, and the power collected by the current collector is sent to the high-voltage equipment box installed under the vehicle floors via the power cables. A power supply system for a vehicle to be supplied is considered. In this power supply system, the power cable and the joint are installed under the floor of the vehicle. (See Patent Document 3)
JP-A-8-169334 JP-A-8-108848 Japanese Patent No. 3617301

Conventionally, in a knitted vehicle composed of a plurality of vehicle units, when electrically separating at the portion of the high voltage lead-through connecting the power supply unit of each vehicle unit, an operator climbs on the roof, The connecting wire connecting the high voltage insulator and the other high voltage insulator was separated. Since this separation work is a high-place work, safety must be taken into consideration. For this reason, the current method of electrically connecting the high-voltage lead-in line via the high-voltage insulator provided on the roof should be solved in terms of the ease of work for electrically separating the high-voltage lead-in line. There are challenges.
In addition, it is considered that a power cable is passed through the floor of the trained vehicle, and electrical insulation between the vehicles is performed in the lower floor portion of the vehicle by a joint installed on the power cable. However, in actual Shinkansen trains and the like, most of installed devices such as a power supply unit, auxiliary equipment, and air conditioner are installed under the floor of the vehicle in order to lower the center of gravity accompanying the increase in speed. For this reason, in a knitted vehicle, it is the present condition that the space which lets the said power cable pass to the under floor part of a vehicle cannot be ensured. Furthermore, it is necessary to install a direct connection type or branch type joint in addition to the power cable under the floor of the vehicle. These joints are high voltage type and relatively large, and it is difficult to secure a space for installing these joints under the floor of the vehicle.
Therefore, it is considered that the top of the vehicle roof is the most realistic structure for installing the high-voltage lead-through line in the knitted vehicle. However, as described above, it is improved from the point of view of safety or ease in the power supply unit shut-off operation. There is room for.

An object of the present invention is to provide a knitted vehicle in which a plurality of power supply units can be separated without climbing on the roof of the vehicle in a knitted vehicle in which a plurality of power supply units are connected by a high-voltage lead-through line. There is .

  An object of the present invention is to form a vehicle unit by dispersing main power supply devices constituting a power supply unit and mounting them on a plurality of vehicles, and in a knitted vehicle configured by connecting a plurality of the vehicle units, The power supply unit of each vehicle unit is connected by a high voltage lead-in line that is passed through the formation vehicle, and a high-voltage circuit breaker that disconnects the power supply unit between the vehicle units is connected to the high-voltage lead-in line. The high-voltage circuit breaker includes a vacuum circuit breaker that cuts off power supply to the power supply unit, and a mechanical circuit breaker that is connected to the vacuum circuit breaker and cuts off between the plurality of connected power supply units. The high-voltage circuit breaker is housed in an equipment box, and the equipment box is configured to be openable and closable and is installed under the floor of the vehicle. It can be achieved Te.

  Another object of the present invention is to provide a knitted vehicle in which main power devices constituting a power supply unit are dispersed and mounted on a plurality of vehicles to form a vehicle unit, and the plurality of vehicle units are connected to each other. The power unit of each vehicle unit is connected by a high voltage lead-in line that is passed through the formation vehicle, and a high-voltage circuit breaker that disconnects the power unit between the vehicle units is installed in the high-voltage lead-in line. The high voltage circuit breaker is connected to the first vacuum circuit breaker for cutting off the power supply to the power supply unit, and to the second vacuum for cutting off between the plurality of connected power supply units. The high voltage circuit breaker can be achieved by a knitted vehicle characterized by being housed in an equipment box.

  Still another object of the present invention is to provide a first high-voltage insulator and a second high-voltage insulator connected in series to a high-voltage lead line connecting a plurality of power supply units, the first high-voltage insulator, A second high voltage insulator is connected to the power supply unit and connected to a connection wire that can mechanically separate the first high voltage insulator and the second high voltage insulator. A power supply unit is interrupted, and a vacuum circuit breaker connected to one of the first high-voltage insulator and the second high-voltage insulator, the first high-voltage insulator, the second high-voltage insulator, A high-voltage circuit breaker comprising: an equipment box that houses the vacuum circuit breaker and has an openable / closable opening for separating the connection wire from the first high-voltage insulator or the second high-voltage insulator Can be achieved with a vessel.

  Still another object of the present invention is to provide a first high-voltage insulator and a second high-voltage insulator connected in series to a high-voltage lead line connecting a plurality of power supply units, the first high-voltage insulator, The second vacuum circuit breaker for connecting the second high voltage insulator and the power supply unit, and the power supply to the connected power supply unit is cut off, and the first high voltage insulator and the second high voltage insulator are connected. A first vacuum circuit breaker connected to any one of the first high voltage insulator, the second high voltage insulator, the first vacuum circuit breaker, and an equipment box that houses the second vacuum circuit breaker. Can be achieved by high voltage circuit breaker.

By providing the above means, the present invention can electrically isolate the high-voltage lead line connecting the power supply unit of the vehicle unit in the underfloor work, and can improve the safety and efficiency of the work .

  An embodiment of a knitted vehicle according to the present invention and a current knitted vehicle will be described below with reference to the drawings.

  1, 2 and 3 show an embodiment of the present invention, and FIGS. 4 and 5 show a current trained vehicle and an equipment box 8. FIG. 6 shows another embodiment of the present invention.

1, 2, In Fig. 3, the train 100, two-car vehicle constitute one vehicle unit, the first vehicle unit 30, the second vehicle unit 40, a third vehicle unit 50 and the fourth The vehicle unit 60 is configured. Although not shown, each vehicle unit is equipped with devices such as an auxiliary power supply device and an air compressor in addition to a power supply unit composed of main power supply devices such as a main transformer and a main converter. The power supply units mounted on each vehicle unit are connected by high-voltage lead lines 20 and 22. The high-voltage lead-through lines 20 and 22 that cross between the vehicles have flexibility, and allow changes in the vehicle interval such as passing a curve, bending, and deviation. The number of current collectors 2 is two because the power supply units included in each vehicle unit are connected by the high-voltage lead wires 20 and 22.

The vehicle 1 constituting the second vehicle unit 40 includes the three-branch high-voltage joint 4 at both ends in the longitudinal direction on the roof, and includes an equipment box 10 under the floor of the vehicle 1. And the high voltage lead-in line 20 which connects the power supply unit 35 of the 1st vehicle unit 30 is a device via one three-branch high-voltage joint 4 and the high voltage lead-in line 21 provided on the roof of the vehicle 1. Connect to box 10. Similarly, the high-voltage lead-through line 22 that connects the power supply unit 45 of the second vehicle unit 40 and the third vehicle unit 50, the power supply unit 55 of the fourth vehicle unit 60, and the power supply unit 65 is provided on the roof of the vehicle 1. The other three-branch high-voltage joint 4 and the high-voltage lead wire 23 provided are connected to the equipment box 10. The three-branch high-voltage joint 4 provided on the roof of the vehicle 1 includes three connection portions. In the case of these connections, only two connection portions are used, and unused connection portions are terminated. .
In addition, as the power supply unit 35, the main transformer 26, the main converter 27, and the main motor 28 are shown as the main components. The other power supply units 45, 55, and 65 have the same configuration.

  Next, the connection part of the apparatus box 10 and the high voltage lead-in lines 21 and 23 is demonstrated. The equipment box 10 provided under the floor and configured to be openable and closable includes a first high voltage insulator 11, a second high voltage insulator 12, a vacuum circuit breaker 13, and a lightning arrester 14. One end of the first high-voltage insulator 11 and one end of the second high-voltage insulator 11 protrude outward from the partition wall of the device box 10. The high voltage lead wire 21 is connected to one end of the first high voltage insulator 11, and the high voltage lead wire 23 is connected to one end of the second high voltage insulator 12.

The other end of the first high-voltage insulator 11 and the other end of the second high-voltage insulator 12 are detachably connected by connecting wires 7 with bolts and nuts to form a mechanical circuit breaker, and the second high-voltage insulator 12 And the other end of the vacuum circuit breaker 13 are connected by a high voltage electric wire 15. Connected to the other end of the vacuum circuit breaker 13 are a high voltage electric wire conducting to the main transformer, which is a component of the power supply unit of the second vehicle unit, and a high voltage electric wire 16 conducting to the lightning arrester 14. With the above configuration, each power supply unit mounted on the first vehicle unit 30 and the second vehicle unit 40 is connected via a mechanical circuit breaker configured inside the equipment box 10. And the apparatus box 10 has the high voltage circuit breaker 25 which uses a mechanical circuit breaker and a vacuum circuit breaker as main components inside.
The device box 10 is configured to be openable. The specific structure is in the vicinity of the mechanical circuit breaker of the partition wall constituting the equipment box 10, that is, in each connection portion of the connection wire 7 connecting the first high voltage insulator 11 and the second high voltage insulator 12. An opening is formed in the partition wall at a close position. The inspection lid 18 is openably and closably installed in the opening. The inspection lid 18 has a structure that can be opened and closed by providing a hinge on one side thereof.

  When a fault such as a ground fault occurs in the high voltage lead-in wires 20, 21, 22, 23 provided in the vehicle unit, the vehicle unit (power supply unit) connected by the high voltage lead-in wire in which the fault has occurred is electrically It is desirable that it can be separated and powered by the power of only the vehicle unit on which the sound power supply unit is mounted.

In such a case, in this embodiment, first, after the current collector 2 is lowered, it is confirmed that an EGS (protective earthing switch) (not shown) is turned on. Next, after opening the inspection lid 18 provided in the equipment box 10, the connecting wire 7 connecting the other end of the first high voltage insulator 11 and the other end of the second high voltage insulator 12 in the equipment box 10 is connected to the tool. To separate mechanically. By the above operation, the high voltage lead-in line 20 to which the power supply unit 35 of the first vehicle unit 30 is connected and the power supply unit 45 and the third vehicle unit 40 of the second vehicle unit 40 are connected only by the operation under the floor without going up on the roof. The high voltage lead-through line 22 to which the power supply unit 55 of the vehicle unit 50 is connected can be electrically separated. That is, by removing the connecting wire 7 from the first high voltage insulator 11 or the second high voltage insulator 12, the high voltage lead wire 21 and the high voltage lead wire 20 connected to the first high voltage insulator 11 are used. Power supply unit 35 of first vehicle unit 30 connected to each other, power supply unit 45 of second vehicle unit 40 connected to second high voltage insulator 12, high voltage lead line 23, and high voltage lead line 22. Thus, the power supply unit 55 of the third vehicle unit 50 connected in this manner is mechanically separated and electrically disconnected.
If the connecting wire 7 is removed from the first high-voltage insulator 11 and the second high-voltage insulator 12, the connection between the power supply unit 35 and the power supply unit 45 can be cut off, and the connection left on one of the high-voltage insulators There is no short circuit accident.

  The vacuum circuit breaker 13 interrupts the high-voltage circuit when an AC overcurrent relay (not shown) connected to a rectifier (not shown) is activated when an abnormal voltage occurs, such as when a lightning strike occurs on the overhead line. . Since the interruption of the high voltage circuit by the vacuum circuit breaker 13 induces a large voltage fluctuation (shock wave discharge voltage), it causes a dielectric breakdown of the electric product. In order to prevent this, a lightning arrester 14 is provided inside the equipment boxes 8 and 10. The lightning arrester 14 does not discharge at a normal voltage, but forms a conductive path between the ground and the high voltage circuit only when an abnormal voltage occurs when the vacuum circuit breaker 13 is operated, etc. To discharge.

Further, instead of the connecting wire 7 connecting the other end of the underfloor first high-voltage insulator 11 and the other end of the under-floor second high-voltage insulator 12 provided in the equipment box 10, the circuit breaker vacuum interrupt is cut off. A vessel may be provided. As a result, it is possible to separate the faulty high-voltage lead-through line and the healthy high-voltage lead-in line by handling the vacuum breaker for passing-through circuit breaker by remote operation without getting down and working under the floor. it can.
As described above, in place of the first high-voltage insulator 11 for the underfloor, the second high-voltage insulator 12 for the underfloor, and the connecting wire 7, the equipment box in which the vacuum circuit breaker for passing circuit breaker is installed By remotely operating the circuit breaker vacuum circuit breaker, it is possible to perform the breaking operation of the lead-through circuit. For this reason, the equipment box in which the vacuum circuit breaker for passing through the circuit breaker is installed can be installed not only under the floor but also in an equipment room or a ceiling part configured above the underframe. For example, in a two-story vehicle designed to increase the number of passengers, there is known an example in which various electrical products are stored in an equipment room configured on a frame at the end of the vehicle. It is also conceivable to install the equipment box in which the vessel is installed in such an equipment room.

  4 and 5, the first to fourth vehicle units are connected to form a trained vehicle 100. And the power supply unit of each vehicle unit is connected to the high voltage lead-in lines 20 and 22. A high voltage insulator 6 with a rectifying cover 5 is provided at an end of the adjacent roof of the vehicle 1 and the vehicle 9 constituting the second vehicle unit 40, and the high voltage insulator 6 provided in the vehicle 1 and the vehicle 9 The high voltage lead line 20 and the high voltage lead line 22 are connected. The rectifying cover 5 is provided in order to reduce aerodynamic noise generated from the high voltage insulator 6. The high voltage insulators 6 and 6 are detachably attached to the connecting wires 7x by bolts and nuts (not shown).

  High voltage lead-in lines 20, 21, and 23 are connected to one end of a first high voltage insulator 11 provided in the equipment box 8 disposed under the floor of the vehicle. Inside the device box 8, the other end of the first high-voltage insulator and one end of the vacuum circuit breaker 13 are connected by a high-voltage electric wire 15. Connected to the other end of the vacuum circuit breaker 13 are a high voltage electric wire conducting to the main transformer, which is a component of the power supply unit of the first vehicle unit, and a high voltage electric wire 16 conducting to the lightning arrester 14.

The equipment box 8 provided under the floor does not include the mechanical circuit breaker provided in the equipment box 10 therein. In the knitted vehicle shown in FIG. 4, the function of the mechanical circuit breaker is performed by the connecting wire 7 x that connects the vehicle 1 constituting the second vehicle unit and the high-voltage insulators 6 and 6 on the roof of the vehicle 9. For this reason, the work between the high voltage lead-in line and the healthy high-voltage lead line cannot be electrically cut off only by the work under the floor. For this reason, a worker climbs to the roof using a step provided on the end face of the vehicle 1 or the vehicle 9 or a ladder and removes the connecting wire 7x to electrically connect the knitted vehicle 100. Electrically isolate the voltage lead-through.
A very high-voltage single-phase alternating current of 25 kV normally flows through the high-voltage electric wire 15 connecting the high-voltage insulator 11 and the vacuum circuit breaker 13 in the device box 8. For this reason, the said high voltage electric wire 15 is installed securing a sufficient insulation distance between the partition which comprises the apparatus box 8. FIG. The same applies to the high-voltage wire 16. In order to prevent damage at the time of installation work or the like, simple covered electric wires with simple coating are used for the high voltage electric wires 15 and 16. The covering of the simple covered electric wire is such that it does not function at all as insulation when the above-described high-voltage current flows, and mainly considers workability and emphasizes flexibility.

By the way, in the case of the equipment box 10, the connecting wire 7 that connects the first high-voltage insulator 11 and the second high-voltage insulator 12 is the same as the high-voltage wires 15 and 16 in order to easily attach and detach it. Simple covered electric wires are used. Therefore, it is necessary to secure a sufficient insulation distance between the connecting wire 7 and the terminals of the first high voltage insulator 11 and the second high voltage insulator 12 connected to the connecting wire 7 and the partition walls constituting the device box 10. .
In the configuration of the device box 8, when adding a mechanical circuit breaker, connect the connection electric wire consisting of a pair of high voltage insulators and a simple covered electric wire connecting them to the device box for a circuit breaker ensuring a sufficient insulation distance. It is necessary to store and to be attached to the device box 8. In such a configuration, the device box 8 and the circuit breaker device box are provided side by side, and a large space for installing these must be secured under the floor of the vehicle. However, in railway vehicles that run at high speed, such as Shinkansen trains, various devices such as a power supply unit, an auxiliary power supply device, an air compressor, an air conditioner, and a ventilation device are mounted under the floor in order to lower the center of gravity. . For this reason, it is difficult to secure a space for installing a circuit breaker device box in addition to the device box 8 under the floor of the vehicle.

The device box 10 is configured to secure a space for housing the connecting wire 7, the first high-voltage insulator 11, and the second high-voltage insulator 12 in addition to the space for housing the vacuum circuit breaker 13.
About the space which accommodates the said connecting wire 7, the 1st high voltage insulator 11, and the 2nd high voltage insulator 12, it becomes the structure which ensured sufficient insulation distance between the partition which comprises an apparatus box. Although the installation space of the device box 10 is somewhat larger than that of the device box 8, the expansion of the installation space can be suppressed as compared with the case where the device box 8 and the circuit breaker device box are provided side by side. As a result, the equipment box 10 can be installed even under the floor of a high-speed railway vehicle where it is difficult to ensure a wide installation space.

In addition, the device box 10 is advantageous in terms of weight and can be reduced in weight as compared with the case where the device box 8 and the circuit breaker device box are provided.
Since the device box 10 is installed under the floor and the inspection lid 18 that can be opened and closed is installed at a position close to the connection wire 7, the connection wire 7 can be easily removed. In addition, since this work is not a work at a high place, it is advantageous in terms of ensuring the safety of the worker.

  By the way, the operation of removing the connecting wire 7 in the device box 10, that is, the operation of disconnecting the power supply units is performed on the main line with the current collector 2 separated from the overhead line. That is, the operator goes to the inspection lid 18 of the equipment box 10 installed under the floor of the vehicle, with the concentrator 2 separated from the overhead line and with the energization to the high-voltage lead wires 20 and 22 cut off. The inspection lid 18 is opened and the connecting wire 7 is removed. As described above, in the knitted vehicle including the device box 10, when a malfunction occurs in a part of the plurality of power supply units, the separation work between the power supply unit that is unspecific on the main line and the healthy power supply unit is performed. Can be done. Therefore, the trained vehicle is stuck on the main line, and it is not necessary to perform forwarding by the rescue train, and the trained vehicle can be forwarded by itself.

  FIG. 6 shows another embodiment. In the knitted vehicle according to the present invention, the high voltage insulators 6 and 6 provided on the roof near the surface where the vehicle 1 and the vehicle 9 constituting the second vehicle unit are connected are connected by the connection electric wire 7x, and the second vehicle unit 40 is connected. An equipment box 10 similar to that of the above embodiment is provided under the floor of the vehicle 1. It is assumed that the unit will be replaced in units of vehicles due to the maintenance inspection cycle or accidental failure of the main power supply equipment.

  The method of connecting each vehicle unit using the high voltage insulator 6 and the connecting wire 7x can be separated more easily than the method of connecting using the high voltage joint 3 and the three-branch high voltage joint 4. . For this reason, in the knitted vehicle shown in FIG. 6, the power unit of the vehicle unit can be electrically and easily separated by removing the connecting wire 7x connecting the high voltage insulators 6 and 6, and the work only under the floor. , Both of the functions of separating the electrical connection of the high voltage lead-in line are provided.

  The above description is an example in the case of a knitted vehicle having two vehicle units shown in FIGS. 1, 4 and 6 forming one vehicle unit and having four vehicle units per knitting. The number of vehicles constituting the vehicle unit and the number of vehicle units constituting the formation vehicle are not limited to the above description, and may be arbitrary.

The figure which shows the formation vehicle by one Example. The schematic diagram of a power supply circuit. The top view of an equipment box. The figure which shows the present formation vehicle. The top view of the present equipment box. The figure which shows the formation vehicle by another Example.

Explanation of symbols

1 .... Vehicle 2 .... Current collector 3 .... High voltage joint 4 .... Tri-branch high voltage joint 5 .... Rectifier cover 6 .... High voltage insulator 7 .... Connecting wire 8 .... Equipment box 9 .... Vehicle 10 · · Equipment box 11 · · First high voltage insulator 12 · · Second high voltage insulator 13 · · Vacuum circuit breaker 14 · · Arresters 15 and 16 · · High-voltage wire 18 · · Inspection lid 20 to 23 · · High voltage passing through Line 25 ·· High voltage circuit breaker 26 · · Main transformer 27 · · Main converter 28 · · Main motor 30 · · First vehicle unit 40 · · Second vehicle unit 50 · · Third vehicle unit 60 · · · 4 vehicle unit 35 .. first power supply unit 45 .. 2nd power supply unit 55 .. 3rd power supply unit 65 .. 4th power supply unit 100.

Claims (3)

In a knitted vehicle configured to disperse main power supply devices constituting a power supply unit and mount them on a plurality of vehicles to form a vehicle unit, and to connect a plurality of the vehicle units,
The power supply unit of each vehicle unit is connected by a high-voltage lead-in line drawn through the formation vehicle,
A high voltage circuit breaker that disconnects the power supply unit between the vehicle units is connected to the high voltage lead-in line,
The high-voltage circuit breaker is composed of a vacuum circuit breaker that cuts off power supply to the power supply unit, and a mechanical circuit breaker that is connected to the vacuum circuit breaker and cuts off between the plurality of connected power supply units,
The high voltage circuit breaker is housed in an equipment box,
The device box is configured to be openable and closable, and is installed under the floor of the vehicle.
An organized vehicle characterized by The formation vehicle according to claim 1,
The device box, in the vicinity of the mechanical circuit breaker, it has an openable opening for performing shutoff operation of the mechanical circuit breaker,
An organized vehicle characterized by In a knitted vehicle configured to disperse main power supply devices constituting a power supply unit and mount them on a plurality of vehicles to form a vehicle unit, and to connect a plurality of the vehicle units,
The power supply unit of each vehicle unit is connected by a high-voltage lead-in line drawn through the formation vehicle,
A high voltage circuit breaker that disconnects the power supply unit between the vehicle units is installed in the high voltage lead-in line,
The high voltage circuit breaker includes: a first vacuum circuit breaker that interrupts power supply to the power supply unit; and a second vacuum circuit breaker that is connected to the first vacuum circuit breaker and blocks a plurality of connected power supply units. Configured,
The high-voltage circuit breaker is housed in an equipment box;
An organized vehicle characterized by

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