Standardized three-phase power supply device for railway automation and remote control systems

Abstract

The invention relates to power supply devices for equipment on a railway network. The claimed device comprises feeder input and protection units, an input unit comprising a feeder connection circuit and a bypass circuit, an uninterruptible power supply, a battery cabinet, an automatic power shut-off unit, an isolation transformer, a power distribution unit, a rechargeable battery pack, and a transformer power distribution unit. The inlets of the feeder input and protection units are connected to the automatic power shut-off unit, the uninterruptible power supply and the rechargeable battery pack. The outlets of the feeder input and protection units are connected to the feeder connection circuit, a first outlet of which provides a guaranteed power output, and a second outlet of which is connected to the isolation transformer, and connected in parallel to the outlet of the isolation transformer via the bypass circuit and the uninterruptible power supply are the power distribution unit, which provides an uninterruptible power output, and the transformer power distribution unit, which provides redundant power outputs. The interruptible power supply is connected to the battery cabinet, and the rechargeable battery pack is connected to the input unit. The technical result consists in providing an uninterrupted power supply to railway automation and remote control devices.

Description

[0001] A unified three-phase power supply device for railway automation and telemetry systems

[0002] Field of technology

[0003] The utility model relates to power supply devices for relay, relay-processor and microprocessor interlocking, automatic blocking with tone track circuits and centralized placement of equipment on the railway network.

[0004] State of the art

[0005] A device for uninterruptible power supply of a consumer is known [Patent of the Russian Federation No. 69342U1, IPC H02J9 / 06, priority date 24.07.2007, published 10.12.2007, bulletin. No. 34], including an uninterruptible power supply and an external bypass cabinet containing first and second disconnectors, first, second and third switches, wherein the inputs of the first and second switches are connected, the outputs of the first and third switches are also connected, the input of the first disconnector is connected to the external electrical network, the output of the second disconnector is connected to the consumer, the output of the second switch is connected to the input of the uninterruptible power supply, the output of which is connected to the input of the third switch, additionally contains first and second galvanic isolation units, first and second units for protection against powerful impulse interference, wherein the output of the first disconnector is connected to the input of the first galvanic isolation unit, the output of which is connected to the inputs of the first and second switches,the output of the second switch is additionally connected to the input of the first high-power impulse noise protection unit, the output of which is grounded, the output of the uninterruptible power supply is additionally connected to the input of the second high-power impulse noise protection unit, the output of which is grounded, the outputs of the first and third switches are connected to the input of the second galvanic isolation unit, the output of which is connected to the input of the second disconnector.

[0006] The closest to the proposed technical solution is the installation of an uninterruptible power supply for railway automation [Patent of the Russian Federation No. 151030 U1, IPC H02J9 / 06, B60MZ / 00, B61L1 / 02, priority date 19.09.2013, published 20.03.2015, bulletin. No. 8], containing input feeders 101, 102, 103, first 2, second 3 and third 4 feeder status and switching units, overvoltage protection units 5, uninterruptible power supplies 6, first 7, second 8 and third 9 feeder current status indication units, first 10, second 11 and third 12 feeder priority setting units, first 13, second 14 and third 15 feeder switching delay setting units, the input feeders are connected via overvoltage protection units to the power inputs of the third feeder status and switching unit 4, the first power output of which is connected to the power inputs of the uninterruptible power supplies 6 and the first power input of the first feeder status and switching unit 2,the outputs of uninterruptible power sources 6 are connected to the first and second power inputs of the second unit 3 for monitoring the condition and switching of feeders, the second power input of the first unit 2 for monitoring the condition and switching of feeders is connected to the first power output of the second unit 3 for monitoring the condition and switching of feeders, the second signal outputs of the first 2, second 3 and third 4 units for monitoring the condition and switching of feeders are connected respectively to units 7, 8, 9 for indicating the current state of feeders, the third control inputs of the first 2, second 3 and third 4 units for monitoring the condition and switching of feeders are connected respectively to units 10, 11, 12 for setting feeder priorities, and the fourth control inputs of units 2, 3, 4 are connected respectively to units 13, 14, 15 for setting the feeder switching delay, the first power output of the first unit 2 for monitoring the condition and switching of feeders is the output of the installation and is connected to the power line 17,wherein each feeder status and switching unit comprises a switch 16, a first 18, a second 19, a third 20 feeder status and switching unit, a priority feeder analysis and selection unit 21 and a feeder switching delay unit 22, the first inputs and outputs of the switch 16 are power inputs, and the output of the switch 16 is the first output of the first feeder status and switching unit 2, the inputs of the feeder status and switching units 18, 19, 20 are connected to the corresponding first inputs and outputs of the switch 16, the first outputs of the feeder status and switching units 18, 19, 20 are connected to the corresponding first inputs of the priority feeder analysis and selection unit 21, the second control input of the switch 16 is connected to the output of the feeder switching delay unit 22, the first signal input of which is connected to the output of the priority feeder analysis and selection unit 21, the second signal input of the feeder switching delay unit 22 is connected to the corresponding block for setting the feeder switching delay,and the second input of the block 21 for analyzing and selecting a priority feeder is connected to the corresponding block for setting feeder priorities, is additionally provided with a fourth 23, fifth 24 and sixth 25 feeder control blocks, connected in parallel to the first 18, second 19 and third 20 feeder control blocks, respectively, and is also provided with a first 26, second 27 and third 28 switch actuation control blocks, connected in parallel to the first 18, second 19, third 20 feeder control blocks.

[0007] The disadvantages of these technical solutions include the lack of the ability to provide uninterrupted and guaranteed power supply to all loads from external power sources.

[0008] Disclosure of a utility model

[0009] The technical result of the claimed technical solution is to provide uninterruptible power supply to various railway automation and telemetry (RAT) devices.

[0010] The technical result is achieved in that the unified three-phase power supply device for railway automation and telemechanics systems contains feeder input and protection units, an input unit comprising an automatic feeder switching circuit and a manual and automatic bypass circuit, an uninterruptible power supply, a battery cabinet, an automatic power-off unit, an isolated transformer, a distribution unit, a set of batteries, a transformer distribution unit, wherein the inputs of the feeder input and protection units are connected to the automatic power-off unit, the uninterruptible power supply and the set of batteries, and the outputs are connected to the automatic feeder switching circuit, the first output of which provides a guaranteed power output, and the second is connected to the isolated transformer,to the output of which, through a manual and automatic bypass circuit and an uninterruptible power supply, a distribution unit providing an uninterruptible power supply output and a transformer distribution unit providing at least two redundant power supply outputs are connected in parallel, while the uninterruptible power supply is connected to the battery cabinet, the set of batteries is connected to the input unit.

[0011] The presence of new distinctive essential features indicates that the claimed utility model meets the patentability criterion of “novelty”.

[0012] Brief description of the drawings

[0013] Figure 1 shows a structural diagram of a unified three-phase power supply device for railway automation and telemetry systems, depicting the main elements that ensure the achievement of the specified technical result. The symbols used in Figure 1 are:

[0014] 1 - feeder input and protection unit;

[0015] 2 - input block;

[0016] 3 - automatic feeder switching circuit;

[0017] 4 - automatic and manual bypass diagram;

[0018] 5 - uninterruptible power supply;

[0019] 6 - battery cabinet;

[0020] 7 - automatic power off unit;

[0021] 8 - isolated transformer;

[0022] 9 - distribution block;

[0023] 10 - set of batteries;

[0024] 11 - transformer distribution block.

[0025] Implementation of a utility model

[0026] Voltage from an external AC source is supplied to the power inputs of the feeder input and protection units 1, designed for input of a cable from an external AC source (feeder or power input of a diesel generator unit (DGU)), protection from atmospheric and switching overvoltages, commercial or technical metering of electrical energy parameters, and protection from current overload.

[0027] The power input of block 1 is connected to a switch with a visible contact break, which performs manual connection / disconnection of the external power supply feeder from the load during repair and maintenance work.

[0028] The output of the switch is connected to the uninterruptible power supply 5 and the automatic power-off unit 7, which has a built-in independent release with a voltage of 220 V AC, designed to remotely disconnect the feeder from the load.

[0029] The power outputs of the input and protection units of feeders 1 are connected to the input of the automatic feeder switching circuit 3 of the input unit 2. The input unit 2 contains an automatic feeder switching circuit 3, which switches the feeders, an automatic and manual bypass circuit 4, circuit breakers, current transformers, indicator elements (lamps, ammeter, voltmeters), and voltage control relays.

[0030] Input block 2 ensures: automatic connection of the feeder to the load; elimination of the possibility of simultaneous connection of two external power sources to the load; connection of isolating transformers providing galvanic isolation of the ZAT devices from external power sources; connection of uninterruptible power supply 5; connection of uninterruptible and guaranteed power supply loads; automatic or manual switching of ZAT loads bypassing uninterruptible power supply 5 in case of its failure or during maintenance work. conversion of AC voltage to DC; protection of outgoing lines from current overload and short circuit; automatic start and stop of the diesel generator set; monitoring of the operating status of the unified three-phase power supply device.

[0031] The automatic and manual bypass circuit 4 continuously monitors the voltage at the output of the uninterruptible power supply 5 and, in the event of a voltage discrepancy with the standard, disconnects the output of the source 5 from the power bus using contactors and connects the power bus to the output of the isolated transformer 8. For maintenance work on the source 5, it can be switched off by manually turning on the power supply bypassing the source 5. The uninterruptible power supply of the source 5 is provided by the battery cabinet 6, which contains batteries of the required capacity to supply the ZAT loads of the required power during the specified autonomous operation time.

[0032] The first output of the automatic feeder switching circuit 3 is connected to the input of the isolating transformer 8, and the second provides the output of guaranteed power supply.

[0033] The voltage from the output of the automatic and manual bypass circuit 4 is supplied to: distribution block 9, intended for power supply of the loads of microprocessor centralization and automatic blocking; transformer distribution block 11, intended for providing power to the redundant power bus, while three-phase and single-phase isolating transformers are located inside block 11.

[0034] The set of storage batteries 10 is connected to the input block 2 and has the ability to be connected to the input block and feeder protection.

[0035] Industrial applicability

[0036] The claimed technical solution can be made from known materials using known means, which indicates that the claimed utility model meets the patentability criterion of “industrial applicability”.

Claims

FORMULA OF A UTILITY MODEL A unified three-phase power supply device for railway automation and telemechanics systems, comprising feeder input and protection units, an input unit comprising an automatic feeder switching circuit and a manual and automatic bypass circuit, an uninterruptible power supply, a battery cabinet, an automatic power-off unit, an isolated transformer, a distribution unit, a set of batteries, a transformer distribution unit, wherein the inputs of the feeder input and protection units are connected to the automatic power-off unit, the uninterruptible power supply and the set of batteries, and the outputs are connected to the automatic feeder switching circuit, the first output of which provides a guaranteed power supply output, and the second is connected to an isolated transformer, to the output of which the distribution unit is connected in parallel through a manual and automatic bypass circuit and an uninterruptible power supply,providing an uninterruptible power supply output, and a transformer distribution block providing at least two redundant power supply outputs, wherein the uninterruptible power supply is connected to the battery cabinet, the set of batteries is connected to the input block. SUBSTITUTE SHEET (RULE 26)

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