JP2006174573A - Power supply unit and power supply starting method for railroad vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply unit and a power supply starting method for a railroad vehicle capable of individually starting and synchronously operating a plurality of auxiliary power supply units in parallel. <P>SOLUTION: The power supply unit for the railroad vehicle is provided with the plurality of auxiliary power supply units for supplying an AC power to an auxiliary circuit of the railroad vehicle; a bus line contactor for partitioning load bus lines in which a load for the auxiliary circuit of the railroad vehicle is connected meeting the plurality of auxiliary power supply units; a load contactor for connecting an output side of each of auxiliary power supply units to corresponding load bus lines; and an electric energy detector for detecting the electric energy of the auxiliary power supply unit adjacent to the head side or rear tail side of an organized vehicle through the load bus lines. The auxiliary power supply unit closes the load connector by a starting command from the outside and performs preparation of synchronous operation in parallel, and closes and mutually synchronizes the bus line connectors when it is determined that a synchronous operation condition in parallel with the adjacent auxiliary power supply unit is established on the basis of the electric energy detected by the electric energy detector. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a power supply apparatus and a power supply activation method for a railway vehicle including a plurality of units that convert electric power of a DC or AC power supply from an overhead wire into predetermined AC power.

  Auxiliary power supply devices that supply AC power to the auxiliary circuit of a railway vehicle are generally equipped with a plurality of auxiliary power supply devices per train, and even if one auxiliary power supply device breaks down, It has redundancy that supplies necessary power to the load of each vehicle.

  One of the redundant power supply systems is a parallel redundant system of auxiliary power supply devices that outputs a plurality of auxiliary power supply devices to the same load bus by performing parallel synchronous operation. FIG. 5 is a configuration diagram of a parallel redundant system in which three auxiliary power supply devices are operated in parallel synchronously in one formation. Power is supplied from the overhead wire 11 to each auxiliary power supply device 13a, 13b, 13c via the current collectors 12a, 12b, 12c, and each auxiliary power supply device 13a, 13b, 13c is connected to the load bus 14 by a load contactor 15a, They are connected via 15b and 15c. An auxiliary circuit load 16 (hereinafter referred to as a load 16) such as a fluorescent lamp or a cooler is connected to the load bus 14. In addition, 17 in FIG. 5 is an intersection section.

  Each auxiliary power supply device 13a, 13b, 13c is provided with voltage detecting means 18a, 18b, 18c for detecting the voltage of the load bus 14. First, one of the auxiliary power supply devices 13a, 13b, 13c is provided. Start up. For example, the auxiliary power supply 13a is activated to supply an output voltage to the load bus 14, and the remaining auxiliary power supplies 13b and 13c are sequentially activated based on the voltage and phase information of the load bus 14.

  Such a parallel redundant system that operates in parallel and synchronous operation can be backed up by two auxiliary power supply devices 13 when one auxiliary power supply device 13 breaks down. Therefore, the rated capacity of the auxiliary power supply device 13 is the same as that during normal operation. Those with a capacity that is 3/2 times larger will be prepared. Even if a power failure occurs in one auxiliary power supply device 13 when passing through the crossing section 17 of the overhead wire 11, it can be backed up by another auxiliary power supply device 13, so that there is no power failure as a whole. However, the first auxiliary power supply 13 that is activated first bears the entire load until the remaining auxiliary power supply 13 is connected to the load bus 14.

  On the other hand, as shown in FIG. 6, the load bus 14 is divided by bus contactors 19a, 19b corresponding to the plurality of auxiliary power supply devices 13a, 13b, 13c, and the bus contact is made from each auxiliary power supply device 13a, 13b, 13c. There is also an individually operated parallel redundant system in which power is supplied to the load buses 14a, 14b, 14c divided by the devices 19a, 19b.

  In this individually operated parallel redundant system, since power is individually supplied to the load of the load bus 14, one auxiliary power supply device does not carry the entire load. However, since a power failure occurs when the overhead wire 11 passes through the intersection section 17, it is necessary to supply power from the battery to the load 16 such as a fluorescent lamp at the time of the power failure, and one auxiliary power device 13 fails. In this case, the bus contactor 18 is closed and backed up by the adjacent auxiliary power supply 13, so that the rated capacity of the auxiliary power supply 13 has a capacity that is twice that of normal operation. It is necessary to prepare.

  Moreover, in order to reduce the rated capacity of the auxiliary power supply device 13, the deviation between the units of the output voltage phase of the power converter and the deviation between the units of the output current of the power converter are suppressed. An output current deviation suppression means is provided, and a parallel operation in which output sides of a plurality of units of power converters are connected in common and supplied to a load is available (for example, see Patent Document 1).

Further, as shown in FIG. 7, a parallel redundant system in which a simulated bus 20 is provided and each auxiliary power supply device 13 a, 13 b, 13 c is synchronized in parallel with the load bus 14 based on the voltage and phase of the simulated bus 20. There is. That is, the voltage of the simulated bus 20 is detected by the voltage detection means 18a, 18b, 18c, the current of the simulated bus 20 is detected by the current detection means 21a, 21b, 21c, the phase is determined from the voltage and current, and the simulated bus Based on the voltage and phase of 20, each auxiliary power supply device 13a, 13b, 13c prepares for synchronous operation, and thereafter, load contactors 15a, 15b, 15c of each auxiliary power supply device 13a, 13b, 13c are turned on simultaneously. The power is output to the load bus 14. However, in this case, the simulated bus 20 that passes between the vehicles is required.
JP 11-215602 A

  However, although the thing of FIG. 5 has the merit that the rated capacity of the auxiliary power supply device 13 can be reduced and a power failure does not occur even when passing through the intersection section, the first auxiliary power supply device 13 to be activated first has the remaining auxiliary power supply. There is a problem that the entire load is carried until the power supply device 13 is connected to the load bus 14.

  Further, in the case shown in FIG. 6, since power is individually supplied to the load of the load bus 14, one auxiliary power supply device 13 does not carry the full load, but when the overhead wire 11 passes through the intersection section 17. It is necessary to prepare a battery in preparation for a power outage, and in preparation for a failure of another auxiliary power supply 13, a rated capacity of the auxiliary power supply 13 having a capacity twice that of normal operation is prepared. It is necessary to keep it.

  In the example shown in FIG. 7, since each auxiliary power supply 13 can operate in synchronization with each other by using the simulated bus 20, the output of each auxiliary power supply 13 is connected to the load bus 14 connected without insulation. Although it is possible to connect all at once, it is possible to eliminate the burden of the entire load on only one auxiliary power supply device 13 even at the time of start-up, but there is a problem that the simulated bus 20 must be passed between the trains. .

  An object of the present invention is to provide a railway vehicle power supply apparatus and a power supply activation method capable of individually starting a plurality of auxiliary power supply apparatuses and performing parallel synchronous operation.

  A railway vehicle power supply apparatus according to the present invention is a railway vehicle power supply apparatus including a plurality of auxiliary power supply apparatuses that supply AC power to an auxiliary circuit of a railway vehicle, and a load bus connected to a load for the auxiliary circuit of the railway vehicle. Adjacent to the front side or rear side of the knitted vehicle, the bus contactor that divides the auxiliary power unit into a plurality of auxiliary power units, the load contactor for connecting the output side of each auxiliary power unit to the corresponding load bus And an electric quantity detecting means for detecting the electric quantity of the auxiliary power supply device through its load bus, and the auxiliary power supply apparatus closes the load contactor and prepares for parallel synchronous operation in response to an external start command. The bus contactor is closed and synchronized with each other when it is determined that a parallel synchronous operation condition with an adjacent auxiliary power supply is established based on the amount of electricity detected by the amount of electricity detecting means. That.

  According to the power activation method for a railway vehicle according to the present invention, a load bus connected to a load for an auxiliary circuit of the railway vehicle is divided by a bus contactor corresponding to a plurality of auxiliary power supplies, and the leading side or the trailing side of the knitted vehicle Detects the amount of electricity from another auxiliary power supply adjacent to the load bus, controls parallel synchronous operation preparation based on the amount of electricity from the other auxiliary power supply, and connects each load bus when preparation is complete The bus contactor is closed, and the parallel synchronous operation mode is entered.

  According to the present invention, it is possible to equalize the output from the auxiliary power supply device during steady operation, without supplying excessive power other than a predetermined load in individual operation even during startup, and overload tolerance during startup. Since it is not necessary to increase the size, the size and weight can be reduced.

In addition, preparation control for parallel synchronous operation is performed by detecting the amount of electricity (voltage or phase) of the auxiliary power supply on the front or rear side of the vehicle via the load bus, so that a simulated bus for preparing for parallel synchronous operation Do not need. Furthermore, even when the trains are combined, even if the trains are asynchronously operated before the combination, parallel synchronous operation including the combined vehicles can be easily realized with the same operation of closing the bus contactor after preparing for synchronous operation after combining. .

  Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of a power supply device for a railway vehicle according to a first embodiment of the present invention. The overhead line 11 is divided by the intersection section 17 and supplied with power. The power of the overhead wire 11 is supplied to each auxiliary power supply device 13a, 13b, 13c via current collectors 12a, 12b, 12c. Each auxiliary power supply device 13a, 13b, 13c supplies power to a load 16 connected to the load bus 14 via load contactors 15a, 15b, 15c. Here, the left side of the vehicle is the leading side.

  The load bus 14 is divided by bus contactors 19a, 19b corresponding to the plurality of auxiliary power supply devices 13a, 13b, 13c, and is divided by bus contactors 19a, 19b from each auxiliary power supply device 13a, 13b, 13c. Further, power is supplied to the load buses 14a, 14b, and 14c.

  Each auxiliary power supply device 13a, 13b, 13c is provided with electric quantity detection means 22a, 22b, 22c for detecting the electric quantity of the load bus 14. The amount of electricity is the amount of electricity required for parallel synchronous operation, and is the amount of electricity required to determine the voltage and phase of the load bus 14 such as current.

  The electrical quantity detection means 22b of the auxiliary power supply device 13b detects the electrical quantity of the adjacent leading load bus 14a, and the electrical quantity detection means 22c of the auxiliary power supply device 13c similarly detects the electrical quantity of the adjacent leading load bus 14b. Is detected. The auxiliary power supply device 13a of the leading vehicle is provided with the electric quantity detecting means 22a, but is not connected because there is no leading load bus 14.

  The auxiliary power supply devices 13a, 13b, and 13c close the load contactors 15a, 15b, and 15c in response to an activation command from the outside while the bus contactors 19a and 19b are open. Then, the auxiliary power supply devices 13a, 13b, and 13c raise their own voltages. As a result, the auxiliary power supply 13a establishes the voltage of its own load bus 14a. The auxiliary power supply devices 13b and 13c determine that the parallel synchronous operation condition with the adjacent auxiliary power supply devices 13a and 13b has been established based on the electric quantity detected by the electric quantity detection means 22b and 22c while preparing for the parallel synchronous operation. When this occurs, the bus contactors 19a and 19b are closed and synchronized with each other.

  FIG. 2 is an explanatory diagram of the starting operation sequence of the power supply device for the railway vehicle according to the first embodiment of the present invention. The bus contactors 19a and 19b of the load bus 14 are kept open. That is, each load bus 14a, 14b, 14c is kept in an insulated state. In this state, each auxiliary power supply device 13a, 13b, 13c outputs an activation signal from the outside simultaneously.

  Each of the auxiliary power supply devices 13a, 13b, and 13c starts up the output voltage in an individual operation (asynchronous operation). The first auxiliary power supply 13a closes the load contactor 15a (S1), raises the output voltage by soft start or the like, and supplies power to the load bus 14a.

  The auxiliary power supply device 13b operates to raise the output voltage in the individual operation (asynchronous operation). When the voltage is established, the load contactor 15b is closed (S2), and power is supplied to the load bus 14b with the established output voltage. Then, the auxiliary power supply device 13b detects the voltage and phase condition of the output of the auxiliary power supply device 13a from the load bus 14a, and prepares for synchronous operation in which the voltage and phase are adjusted to a state in which the auxiliary power supply device 13a can be operated in parallel synchronous operation. (S3). When the preparation for the synchronous operation is completed (S4), the bus contactor 19a connecting the load bus 14a and the load bus 14b is closed (S5), and the auxiliary power supply device 13a and the auxiliary power supply device 13b enter the parallel synchronous operation.

  Similarly, the auxiliary power supply device 13c operates to raise the output voltage in individual operation (asynchronous operation), closes the load contactor 15c when the voltage is established (S6), and supplies power to the load bus 14c with the established output voltage. Supply. Then, the auxiliary power supply device 13c detects the voltage and phase condition of the output of the auxiliary power supply device 13b from the load bus 14b, and prepares for synchronous operation in which the voltage and phase are adjusted to a state in which the auxiliary power supply device 13b can be operated in parallel synchronous operation. (S7). When the preparation for the synchronous operation is completed (S8), the bus contactor 19b connecting the load bus 14b and the load bus 14c is closed (S9), and the auxiliary power supply device 13b and the auxiliary power supply device 13c enter the parallel synchronous operation.

  In this way, when all the bus contactors 19a, 19b are closed, all the auxiliary power supply devices 13a, 13b, 13c become parallel synchronous operation as knitting, and the start of the parallel synchronous operation is completed.

  In the above description, the electric quantity detecting means 22 sequentially detects the electric quantity of the load bus 14 adjacent to the head side of the trained vehicle and operates synchronously. However, the electric quantity of the load bus 14 adjacent to the rear side is sequentially changed. It may be detected and operated synchronously.

  When the start command is input, the head auxiliary power supply device 13a closes the load contactor 15a, raises the output voltage by soft start or the like and supplies power to the load bus 14a. 14a may be closed and power may be supplied to the load bus. Conversely, the auxiliary power supply devices 13b and 13c operate to raise the output voltage and close the load contactors 15b and 15c when the voltage is established, but close the load contactors 15b and 15c when an activation command is input, The output voltage may be raised by soft start or the like, and power may be supplied to the load buses 14b and 14c.

  Further, when a failure occurs in its own load bus 14 or the adjacent load bus 14, the auxiliary power supply device 13 can also open the bus contactors 19a and 19b to disconnect the load bus 14 that has failed. is there. For example, when the load bus 14c becomes defective, the bus breaker 19b is disconnected.

  As described above, when the load bus 14 passed through the knitted vehicle is insulated by the bus contactor 19 for each auxiliary power supply device 13 and a fault such as a ground fault occurs in the load bus 14, other loads An opening function for separating from the bus 14 is provided.

  Further, in addition to the load bus 14 being divided by the bus contactor 19, the auxiliary power supply 13 outputs the output voltage of the auxiliary power supply 13 adjacent to the head side (or the tail side) of the trained vehicle through the load bus 14. The initial parallel synchronous operation preparation is established by this detection output, and the parallel contact operation is performed by closing the bus contactor 19.

  According to the first embodiment, the preparation control for the parallel synchronous operation is performed by detecting the electric quantity (voltage or phase) of the auxiliary power supply device 13 on the head side or the rear side of the vehicle via the load bus. Does not require a simulated bus to prepare for parallel synchronous operation.

  Next, a second embodiment of the present invention will be described. FIG. 3 is a configuration diagram of a power supply device for a railway vehicle according to the second embodiment of the present invention. This 2nd Embodiment is applied to the parallel synchronous operation at the time of joining of formations instead of the parallel synchronous operation of the auxiliary power supply 13 of one formation. Consider a case where an A train and a B train are combined. When the auxiliary power unit 13A of the power source for the A train is operated in parallel synchronous operation and the power unit for the B train is operated individually, when the A train and the B train are combined, The auxiliary power supply 13Ba detects the amount of electricity in the A-set load bus 14A via the amount-of-electricity detecting means 22Ba, and when the preparation for the synchronous operation is completed, the bus contactor 19B connecting the load bus 14A and the load bus 14Ba is provided. The auxiliary power supply device 13A and the auxiliary power supply device 13Ba are operated in parallel synchronous operation.

  Similarly, the auxiliary power supply 13Bb detects the amount of electricity of the load bus 14Ba of the A formation via the amount of electricity detection means 22Bb, and when the preparation for the synchronous operation is completed, the bus contact that connects the load bus 14Ba and the load bus 14Bb together The container 19Ba is closed, and the auxiliary power supply device 13Ba and the auxiliary power supply device 13Bb are operated in parallel synchronous operation.

  FIG. 4 is an explanatory diagram of the starting operation sequence of the power supply device for a railway vehicle according to the second embodiment of the present invention. FIG. 4 shows a case where the A knitting power supply device and the B knitting power supply device are coupled together when performing the parallel synchronous operation. The auxiliary power supply device 13Bb detects the voltage and phase condition of the output of the auxiliary power supply device 13A from the load bus 14A, and prepares for synchronous operation in which the voltage and phase are adjusted to a state in which the auxiliary power supply device 13A can perform parallel synchronous operation (S11). ). When the preparation for the synchronous operation is completed (S12), the bus contactor 19B connecting the load bus 14A and the load bus 14Ba is closed (S13), and the auxiliary power supply device 13A and the auxiliary power supply device 13Ba are set in parallel synchronous operation.

  The same operation can be achieved by merging trains that are operating in parallel synchronous operation, or by merging trains that are individually operated and trains that are operating in parallel synchronous operation. In other words, the voltage and phase information is detected by the other auxiliary power supply 13 from one load bus 14 at the time of merging, and after completing preparations for parallel synchronous operation, the bus contactor 19 is closed and the knitting is merged. Parallel synchronous operation can be achieved.

  According to the second embodiment, even when the trains are combined, the trains are included in the same operation of closing the bus contactor through the synchronous operation preparation after combining even if the trains are asynchronously operated before the merger. Parallel synchronous operation can be easily realized.

The lineblock diagram of the power supply device of the railroad car concerning the 1st embodiment of the present invention. Explanatory drawing of the starting operation | movement order of the power supply device of the railway vehicle concerning the 1st Embodiment of this invention. The block diagram of the power supply device of the railway vehicle concerning the 2nd Embodiment of this invention. Explanatory drawing of the starting operation | movement order of the power supply device of the railway vehicle concerning the 2nd Embodiment of this invention. The block diagram which shows an example of the conventional parallel redundant system. The block diagram which shows another example of the conventional parallel redundant system. The block diagram which shows another example of another example of the conventional parallel redundant system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Overhead wire, 12 ... Current collector, 13 ... Auxiliary power supply device, 14 ... Load busbar, 15 ... Load contactor, 16 ... Load, 17 ... Intersection section, 18 ... Voltage detection means, 19 ... Busbar contactor, 20 ... Simulated bus, 21 ... Current detection means, 22 ... Electric quantity detection means

Claims (4)

  In a railway vehicle power supply device equipped with a plurality of auxiliary power supplies that supply AC power to the auxiliary circuit of the railway vehicle, the load bus connected to the load for the auxiliary circuit of the railway vehicle is classified according to the plurality of auxiliary power supply devices. The load contactor, the load contactor for connecting the output side of each auxiliary power supply device to the corresponding load busbar, and the amount of electricity of the auxiliary power supply device adjacent to the front side or rear side of the trained vehicle. And the auxiliary power supply device closes the load contactor in response to an external start command and prepares for parallel synchronous operation and detects the amount of electricity detected by the amount of electricity detecting means. , The bus contactor is closed and synchronized with each other when it is determined that the parallel synchronous operation condition with the adjacent auxiliary power supply is established based on the above. 2. The railway vehicle according to claim 1, wherein the auxiliary power supply device disconnects the defective load bus by opening the bus contactor when a failure occurs in its own load bus or adjacent load bus. Power supply. Instead of closing the load contactor by an external start command, the auxiliary power supply device starts operation by an external start command, and when the output is determined, closes the load contactor and supplies power to the load bus. The power supply device for a railway vehicle according to claim 1, wherein the power supply device is supplied. A load bus connected to a load for an auxiliary circuit of a railway vehicle is divided by a bus contactor corresponding to a plurality of auxiliary power supply devices, and the electric quantity of another auxiliary power supply device adjacent to the front side or the rear side of the knitted vehicle is determined. Detects via the load bus, performs parallel synchronous operation preparation control based on the amount of electricity of the other auxiliary power supply, closes the bus contactor that connects each load bus when preparation is complete, and performs parallel synchronous operation A method for starting a power supply of a railway vehicle, characterized in that a mode is entered.

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