CN214379295U - Switching station - Google Patents

Switching station Download PDF

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Publication number
CN214379295U
CN214379295U CN202022194443.2U CN202022194443U CN214379295U CN 214379295 U CN214379295 U CN 214379295U CN 202022194443 U CN202022194443 U CN 202022194443U CN 214379295 U CN214379295 U CN 214379295U
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CN
China
Prior art keywords
switchyard
line
bus
transformer
voltage side
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Active
Application number
CN202022194443.2U
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Chinese (zh)
Inventor
张曙
陈凯
朱荣钊
张扬
雷琪
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Priority to CN202022194443.2U priority Critical patent/CN214379295U/en
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Abstract

The embodiment of the utility model discloses switching station, include: a transformer having a low voltage side and a high voltage side; wherein the high voltage side of the transformer is connected with a bus of the switchyard; the voltage of the low voltage side is lower than the voltage of the high voltage side; an Uninterruptible Power Supply (UPS) having a first end and a second end, the first end of the UPS being connected to the low voltage side; and the working unit is connected with the second end of the UPS.

Description

Switching station
Technical Field
The utility model relates to a railway electric power engineering technical field especially relates to a switching station.
Background
The switching station provides 10kV power for the traction stations (such as traction substations, zoning stations, switching stations and electric traction AT stations) and is generally arranged AT a distance exceeding 1km from the box-type substation, and it is difficult to connect low voltage power AT the periphery, which makes it difficult for the switching station to provide low voltage power for its working units (such as Remote Terminal Units (RTUs)).
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention is expected to provide a switch station.
The technical scheme of the utility model is realized like this: a switchyard, comprising:
a transformer having a low voltage side and a high voltage side; wherein the high voltage side of the transformer is connected with a bus of the switchyard; the voltage of the low voltage side is lower than the voltage of the high voltage side;
an Uninterruptible Power Supply (UPS) having a first end and a second end, the first end of the UPS being connected to the low voltage side;
and the working unit is connected with the second end of the UPS.
Preferably, the working unit includes:
and the remote terminal unit is used for acquiring the working state information of the switching station and transmitting the working state information to the remote control center through the telecontrol channel.
Preferably, the working unit includes:
and the electric operating mechanism is used for controlling the switch cabinet to perform switching-on and switching-off operations.
Preferably, the UPS provides dc power to the work unit.
Preferably, the switchyard further comprises:
a fuse connected between a bus of the switchyard and a high voltage side of the transformer.
Preferably, the switchyard further comprises:
the standby power supply is connected with the bus of the switching station through a connecting circuit;
wherein, a switch is also arranged on the connecting circuit;
the switch is closed, and the standby power supply supplies power to the switch station through the bus;
and the switch is disconnected, and the standby power supply is disconnected with the bus.
Preferably, a bus of the switching station is also connected with a load through line incoming line and a load through line outgoing line;
and the load through line outgoing line and the load through line incoming line are connected to different positions of a bus of the switching station.
Preferably, the transformer is: a voltage transformer.
Preferably, the rated capacity of the uninterruptible power supply UPS does not exceed 6 KVA.
The switching station provided by the embodiment of the utility model is provided with the transformer and the UPS, the voltage of the bus side is converted into the voltage value required by the working unit through the transformer, the required power supply is provided for the working unit, and the switching station has the characteristics of small volume and low cost; meanwhile, the uninterrupted power supply UPS is arranged, so that the uninterrupted power supply is provided for the working unit.
Drawings
Fig. 1 is a schematic structural diagram of a first switching station according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second switching station according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third switching station according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a switching station 10, including:
a transformer 101 having a low voltage side and a high voltage side; wherein the high voltage side of the transformer 101 is connected with a bus 102 of the switchyard 10; the voltage of the low voltage side is lower than the voltage of the high voltage side;
an Uninterruptible Power Supply (UPS) 103 having a first end and a second end, the first end of the UPS103 being connected to the low voltage side;
and a working unit 104 connected to a second end of the UPS 103.
In some embodiments, the bus bars 102 of the switchyard 10 are used to collect, distribute and transfer electrical energy between switchgears and to various electrical devices within the switchgears.
In this embodiment, the bus 102 may be a 10KV bus or a power supply line that can provide a higher voltage or a voltage of any kilovolt level.
In some embodiments, the transformer 101 comprises at least: a voltage transformer.
The voltage transformer includes: the transformer comprises a primary coil and a secondary coil, wherein the primary coil and the secondary coil realize voltage transformation while transmitting electric energy through electromagnetic mutual inductance. In the disclosed embodiment, the transformer 101 may be a transformer that converts a high voltage of the bus bar input into a low voltage.
The high voltage side may be the side where the primary coil is located; the low voltage side may be the side on which the secondary coil is located.
Specifically, as shown in fig. 2, the high-voltage side of the voltage transformer is connected to the bus 102 of the switchyard 10, and the low-voltage side is connected to the first terminal of the UPS103, for converting the voltage provided by the bus 102 into a voltage of a voltage class required by the operating unit 104, for example, converting the 10KV voltage provided by the bus 102 into a 220V voltage.
The UPS is provided with a storage unit which comprises one or more battery packs; the battery pack may be used to store electrical energy.
The UPS can comprise a rectifier circuit and the like, alternating current input by a transformer is converted into direct current by the rectifier circuit and is input into the UPS, and the output power of the UPS can be the power directly output by the rear end of the rectifier circuit; on the other hand, when the input of the UPS is abnormal, the UPS may use the power stored in the UPS to supply power to the switching station without interruption when the bus or the transformer is temporarily abnormal.
In this embodiment, the voltage transformer may be JSZV12A-10R 10/0.22 kV.
In some embodiments, the UPS103 is connected to the low-voltage side of the transformer 101 at a first end and to the work unit 104 at a second end. When the low-voltage side of the transformer 101 normally outputs voltage, the uninterruptible power supply UPS103 provides electric energy for the working unit 104 after stabilizing the output voltage, and meanwhile, the uninterruptible power supply UPS103 also charges the battery thereof by using the output voltage of the transformer 101; when the low-voltage side output voltage of transformer 101 is interrupted, uninterruptible power supply UPS103 supplies power to operating unit 104 using its own battery.
In this embodiment, the rated capacity of the UPS103 does not exceed 6 KVA. For example, the rated capacity of the uninterruptible power supply UPS is 2KVA or 3 KVA. Specifically, when the rated capacity of UPS103 is determined, the required capacity may be configured according to the planned load size and expected capacity expansion of all working units 104, so as to ensure the power supply quality of UPS103, reduce the failure rate, and save the investment cost.
In this embodiment, the output voltage of the UPS103 is 220V.
In this embodiment, the UPS103 provides a dc power supply for the working unit 104.
In some embodiments, as shown in fig. 3, the work unit 104 includes:
and the remote terminal unit 1041 is configured to collect the working state information of the switching station 10, and transmit the working state information to a remote control center through a telecontrol channel. For example, the remote terminal unit 1041 collects operation data, status, failure alarm information, and the like of the switchyard 10, and moves through the telecontrol channel to upload to the remote control center, and the remote control center controls the switchyard 10 based on the received information.
In some embodiments, as shown in fig. 3, the work unit 104 includes:
and the electric operating mechanism 1042 is used for controlling the switch cabinet 10 to perform switching on and off operations. Here, the electric operation mechanism 1042 includes: the motor and the control circuit control the motor to drive the switch cabinet 10 to carry out switching on and switching off operations through the control circuit. When the switchgear 10 is closed, power is transmitted to all the electrical devices in the switchgear 10 and other electrical devices connected to the switchgear 10, and when the switchgear 10 is opened, power transmission is stopped.
In this embodiment, the remote terminal unit 1041 and the electric operating mechanism 1042 are connected in parallel to a second end of the UPS 103.
It is understood that the work unit 104 may further include other electrical devices, and all the electrical devices included in the work unit 104 may be connected to the second terminal of the UPS103 in parallel.
In some embodiments, the switchyard 10 further comprises:
and a fuse 105 connected between the bus bar 102 of the switchyard 10 and the high voltage side of the transformer 101 for ensuring safe operation of the switchyard 10.
The fuse 105 may include one or more resistance wires, which automatically fuse when the current of the connected bus is too large, thereby achieving fuse protection.
In some embodiments, a load through line incoming line 106 and a load through line outgoing line 107 are further connected to the bus bar 102 of the switching station 10;
the load through line outgoing line 107 and the load through line incoming line 106 are connected to different positions of the bus bar 102 of the switching station 10.
In this embodiment, as shown in fig. 2, one end of the load through line inlet 106 is connected to the bus 102, and the other end is connected to the substation, and the substation includes a first current transformer 1061 and a first air switch 1062 connected in series, where the first current transformer 1061 detects the amount of current flowing through the load through line inlet 106, and if the amount of current is greater than a set value, a protection operation is started to turn off the first air switch 1062.
The load through line incoming line 106 further comprises a first live indicator 1063 and a first grounding switch 1064, the first live indicator 1063 and the first grounding switch 1064 are connected in parallel and then connected in series between the first current transformer 1061 and the first air switch 1062, when the load through line incoming line 106 is electrified, the first live indicator 1063 shows red, and when the line is overhauled, the first grounding switch 1064 is grounded.
The load feedthrough inlet wire also includes a first cable sheath protector 1065 connected in series between the first current transformer 1061 and the first live indicator 1063 and first ground blade 1064 connected in parallel.
In this embodiment, as shown in fig. 2, the load through line outlet 107 includes a second current transformer 1071 and a second air switch 1072 connected in series, and the second current transformer 1071 detects the amount of current flowing through the load through line outlet 107, and starts a protection operation to turn off the second air switch 1072 if the amount of current is greater than a set value.
The load through line outgoing line 107 further includes a second charge indicator 1073 and a second grounding switch 1074, the second charge indicator 1073 and the second grounding switch 1074 are connected in parallel and then connected in series between the second current transformer 1071 and the second air switch 1072, when the load through line outgoing line 107 is electrified, the second charge indicator 1073 shows red, and when the line is overhauled, the second grounding switch 1074 is grounded.
The load thru line outlet 107 also includes a second cable sheath protector 1075 connected in series between a second current transformer 1071 and a second live indicator 1073 and a second ground blade 1074 connected in parallel.
In some embodiments, the switchyard 10 further comprises:
a backup power supply (not shown) connected to the bus 102 of the switchgear station 10 via a connection circuit 108;
wherein, a switch 1081 is further disposed on the connection circuit 108;
the switch 1081 is closed and the backup power supply supplies power to the switchyard 10 via the bus 102;
the switch 1081 is open and the backup power source is disconnected from the bus 102.
Specifically, the connection circuit 108 further includes a third current transformer 1082, the third current transformer 1082 is connected in series with the switch 1081, the third current transformer 1082 detects the amount of current from the standby power supply, and if the amount of current is greater than a set value, the protection operation is started, and the switch 1081 is turned off;
the connecting circuit 108 further includes a third charge indicator 1083 and a third grounding blade 1084, the third charge indicator 1083 and the third grounding blade 1084 are connected in parallel and then connected in series between the third current transformer 1082 and the switch 1081, the third charge indicator 1083 displays red when the connecting circuit 108 is charged, and the third grounding blade 1084 is grounded during line maintenance.
The connecting circuit 108 also includes a third cable sheath protector 1085 connected in series between a third current transformer 1082 and a third live indicator 1083 and a third ground blade 1084 connected in parallel.
The connecting circuit 108 also includes a high voltage fuse 1086 connected in series between the switch 1081 and the third charge indicator 1083 and the third ground blade 1084 connected in parallel.
The following describes a switching station provided in an embodiment of the present invention with a specific example:
an uninterruptible power supply UPS with the capacity of 2kVA and the output voltage of 220V is arranged in a 10kV box type switch station, and the uninterruptible power supply UPS provides a direct-current power supply for a remote terminal unit RTU and provides an operation power supply for an electric operation mechanism of the switch station; meanwhile, a JSZV12A-10R 10/0.22kV voltage transformer is connected to the 10kV bus side of the 10kV box-type switching station, and a 220V power supply is output from the low-voltage side of the JSZV voltage transformer to supply power for the UPS.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some ports, indirect coupling or communication connection between devices or units, and may be electrical, mechanical or other.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A switchyard, characterized by comprising:
a transformer having a low voltage side and a high voltage side; wherein the high voltage side of the transformer is connected with a bus of the switchyard; the voltage of the low voltage side is lower than the voltage of the high voltage side;
an Uninterruptible Power Supply (UPS) having a first end and a second end, the first end of the UPS being connected to the low voltage side;
the working unit is connected with the second end of the UPS;
a load through line incoming line, wherein one end of the load through line incoming line is connected with the bus;
wherein, the load link up the line inlet wire and include: the first current transformer, the first air switch, the first live indicator, the first grounding switch blade and the first cable sheath protector are connected in parallel and then connected in series between the first current transformer and the first air switch, and the first cable sheath protector is connected in series between the first current transformer and the first live indicator and the first grounding switch blade which are connected in parallel.
2. The switchyard according to claim 1, characterized in that the working unit comprises:
and the remote terminal unit is used for acquiring the working state information of the switching station and transmitting the working state information to the remote control center through the telecontrol channel.
3. The switchyard according to claim 1 or 2, characterized in that the working unit comprises:
and the electric operating mechanism is used for controlling the switch cabinet to perform switching-on and switching-off operation.
4. The switchyard according to claim 1, characterized in that the uninterruptible power supply UPS provides dc power for the working units.
5. The switchyard according to claim 1, characterized in that the switchyard further comprises:
a fuse connected between a bus of the switchyard and a high voltage side of the transformer.
6. The switchyard according to claim 1, characterized in that the switchyard further comprises:
the standby power supply is connected with the bus of the switching station through a connecting circuit;
wherein, a switch is also arranged on the connecting circuit;
the switch is closed, and the standby power supply supplies power to the switch station through the bus;
and the switch is disconnected, and the standby power supply is disconnected with the bus.
7. The switchyard according to claim 1, characterized in that a load through line incoming line and a load through line outgoing line are further connected to the bus bars of the switchyard;
and the load through line outgoing line and the load through line incoming line are connected to different positions of a bus of the switching station.
8. The switchyard according to claim 1, characterized in that the transformer is: a voltage transformer.
9. A switchyard according to claim 1, characterized in that the rated capacity of the uninterruptible power supply UPS does not exceed 6 KVA.
CN202022194443.2U 2020-09-29 2020-09-29 Switching station Active CN214379295U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022194443.2U CN214379295U (en) 2020-09-29 2020-09-29 Switching station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022194443.2U CN214379295U (en) 2020-09-29 2020-09-29 Switching station

Publications (1)

Publication Number Publication Date
CN214379295U true CN214379295U (en) 2021-10-08

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ID=77967888

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022194443.2U Active CN214379295U (en) 2020-09-29 2020-09-29 Switching station

Country Status (1)

Country Link
CN (1) CN214379295U (en)

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