CN209913504U

CN209913504U - Multifunctional comprehensive compensation device of traction power supply system of compound line electrified railway

Info

Publication number: CN209913504U
Application number: CN201920642000.XU
Authority: CN
Inventors: 王璟; 张�诚; 张于峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-01-07
Anticipated expiration: 2029-05-07

Abstract

The utility model discloses a multi-functional compensation arrangement that synthesizes of compound line electric railway traction power supply system, include: the first traction network and the second traction network are connected with the traction substation, and the first traction network and the second traction network are respectively connected with a first electric motor car and a second electric motor car. The utility model discloses the wiring is simple, the cost is low, the reliability is better, and this multi-functional compensation arrangement that synthesizes simultaneously can realize compensating electric motor car load reactive power, stably pulls the net voltage, restraines the harmonic current that the locomotive produced to can compensate partial negative sequence electric current, realize carrying out multi-functional comprehensive compensation to compound line electric railway traction power supply system, and the engineering easily realizes, and response speed piece, staff maintain the convenience simultaneously.

Description

Multifunctional comprehensive compensation device of traction power supply system of compound line electrified railway

Technical Field

The utility model relates to an electric railway pulls power supply system and synthesizes compensation technical field, especially relates to a multi-functional compensation arrangement that synthesizes of compound line electric railway pulls power supply system.

Background

With the acceleration of the construction pace of the electrified railways in China, the influence on the power industry is larger and larger. The non-linear devices such as power electronic devices in the electric locomotive also consume reactive power, particularly various phase control devices such as a phase control rectifier, a phase control alternating current power adjusting circuit and a cycle converter, and a multifunctional comprehensive compensation device is arranged in a multi-line electrified railway subarea, so that the multifunctional comprehensive compensation device has the capabilities of voltage compensation, filtering, overvoltage suppression and the like of a traction network, and has important significance for ensuring the traction power supply quality and the power supply safety of the electrified railway.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a multifunctional comprehensive compensation device of a traction power supply system of a compound line electrified railway.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a multi-functional comprehensive compensation arrangement of compound line electric railway traction power supply system includes: the system comprises a traction substation, a first traction net, a first comprehensive compensation device, a second traction net and a second comprehensive compensation device;

the first traction network and the second traction network are both connected with a traction substation, and the first traction network and the second traction network are connected with a first electric motor car and a second electric motor car respectively;

the first comprehensive compensation device is connected with a first wiring terminal and a second wiring terminal respectively, and the first wiring terminal and the second wiring terminal are connected with the first traction network through connecting wires;

and the second comprehensive compensation device is respectively connected with a third wiring terminal and a fourth wiring terminal, wherein the third wiring terminal and the fourth wiring terminal are connected with a second traction network through connecting wires.

As a further description of the above technical solution:

the first comprehensive compensation device comprises a fixed capacitor, a first thyristor, a second thyristor and a reactor;

the fixed capacitor is connected with the first wiring terminal through a connecting wire.

As a further description of the above technical solution:

the first thyristor and the second thyristor are reversely connected in parallel on the parallel circuit, a reactor is further connected in series on the parallel circuit, and the parallel circuit is further connected with the second wiring terminal through a connecting wire.

As a further description of the above technical solution:

the internal electrical structure of the second integrated compensation device is the same as the internal electrical structure of the first integrated compensation device.

As a further description of the above technical solution:

and the first wiring terminal on the first comprehensive compensation device is connected with the fourth wiring terminal on the second comprehensive compensation device through a first connecting wire, and a first control switch is arranged on the first connecting wire.

As a further description of the above technical solution:

and the second wiring terminal on the first comprehensive compensation device is connected with the third wiring terminal on the second comprehensive compensation device through a second connecting wire, and a second control switch is arranged on the second connecting wire.

Advantageous effects

The utility model provides a multi-functional compensation arrangement that synthesizes of compound line electric railway traction power supply system. The method has the following beneficial effects:

(1): the multifunctional comprehensive compensation device of the traction power supply system of the compound line electrified railway has the advantages of simple wiring, low manufacturing cost and better reliability, meanwhile, the multifunctional comprehensive compensation device of the traction power supply system of the compound line electrified railway can realize compensation of the load reactive power of the electric vehicle, stabilize the voltage of a traction network, inhibit harmonic current generated by a locomotive and compensate partial negative sequence current, realizes multifunctional comprehensive compensation of the traction power supply system of the compound line electrified railway, is easy to realize engineering, and is convenient to maintain by response speed blocks and workers.

(2): the multifunctional comprehensive compensation device of the traction power supply system of the compound line electrified railway is connected between the first comprehensive compensation device and the second comprehensive compensation device through the first connecting wire and the second connecting wire, so that the first comprehensive compensation device and the second comprehensive compensation device which are connected on the first traction network and the second traction network can be alternately used, the electric vehicle cannot stop running when a single comprehensive compensation device is subjected to fault maintenance, and the maintenance is more convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of a multifunctional comprehensive compensation device of a traction power supply system of a multi-line electrified railway provided by the utility model;

FIG. 2 is a schematic diagram of the internal electrical structure of the comprehensive compensation device of the present invention;

fig. 3 is a schematic diagram of the connection between the first comprehensive compensation device and the second comprehensive compensation device of the present invention.

Illustration of the drawings:

1. a traction substation; 2. a first traction net; 21. a first electric motor car; 22. a first integrated compensation device; 23. a first connection terminal; 24. a second connection terminal; 3. a second traction net; 31. a second electric motor car; 32. a second integrated compensation device; 33. a third connection terminal; 34. a fourth connection terminal; 4. a first connecting wire; 41. a second connecting wire; 5. a first control switch; 51. a second control switch; 6. a fixed capacitor; 7. a first thyristor; 8. a second thyristor; 9. a reactor; 10. a parallel circuit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 and 2, a multifunctional comprehensive compensation device for a traction power supply system of a multi-line electrified railway comprises: a traction substation 1, a first traction network 2, a first comprehensive compensation device 22, a second traction network 3 and a second comprehensive compensation device 32;

the first traction network 2 and the second traction network 3 are both connected with the traction substation 1, and the first traction network 2 and the second traction network 3 are respectively connected with a first electric motor car 21 and a second electric motor car 31;

the first comprehensive compensation device 22 is connected with a first wiring terminal 23 and a second wiring terminal 24 respectively, and the first wiring terminal 23 and the second wiring terminal 24 are connected with the first traction network 2 through connecting wires;

the second comprehensive compensation device 32 is connected with a third connection terminal 33 and a fourth connection terminal 34 respectively, wherein the third connection terminal 33 and the fourth connection terminal 34 are connected with the second traction network 3 through connection lines.

The first comprehensive compensation device 22 comprises a fixed capacitor 6, a first thyristor 7, a second thyristor 8 and a reactor 9;

the fixed capacitor 6 is connected to the first connection terminal 23 by a connection line.

The first thyristor 7 and the second thyristor 8 are connected in parallel in reverse on the parallel circuit 10, and a reactor 9 is also connected in series on the parallel circuit 10, and the parallel circuit 10 is also connected with a second connection terminal 24 through a connection line.

The internal electrical structure of the second integral compensation device 32 is the same as the internal electrical structure of the first integral compensation device 22.

The working principle is as follows: the first comprehensive compensation device 22 and the second comprehensive compensation device 32 can respectively realize compensation of the reactive power of the loads of the first electric motor car 21 and the second electric motor car 31, stabilize the voltage of the first traction network 2 and the second traction network 3, inhibit harmonic current generated by the first electric motor car 21 and the second electric motor car 31, compensate partial negative sequence current, and realize multifunctional comprehensive compensation of a traction power supply system of the multi-line electrified railway.

Referring to fig. 3, the first connection terminal 23 of the first comprehensive compensation device 22 and the fourth connection terminal 34 of the second comprehensive compensation device 32 are connected by a first connection wire 4, and the first connection wire 4 is provided with a first control switch 5.

The second connection terminal 24 of the first comprehensive compensation device 22 is connected to the third connection terminal 33 of the second comprehensive compensation device 32 through a second connection wire 41, and a second control switch 51 is disposed on the second connection wire 41.

The first comprehensive compensation device 22 and the second comprehensive compensation device 32 connected to the first traction network 2 and the second traction network 3 can be matched with the first connecting wire 4 and the second connecting wire 41 to alternately compensate the first traction network 2 and the second traction network 3, and when a single comprehensive compensation device on the first traction network 2 or the second traction network 3 is in fault maintenance, the electric vehicle cannot stop running, so that the maintenance is more convenient.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a multi-functional compensation arrangement that synthesizes of compound line electric railway traction power supply system which characterized in that includes: the system comprises a traction substation (1), a first traction net (2), a first comprehensive compensation device (22), a second traction net (3) and a second comprehensive compensation device (32);

the first traction network (2) and the second traction network (3) are both connected with the traction substation (1), and the first traction network (2) and the second traction network (3) are respectively connected with a first electric motor car (21) and a second electric motor car (31);

the first comprehensive compensation device (22) is respectively connected with a first wiring terminal (23) and a second wiring terminal (24), and the first wiring terminal (23) and the second wiring terminal (24) are connected with the first traction net (2) through connecting wires;

and the second comprehensive compensation device (32) is respectively connected with a third wiring terminal (33) and a fourth wiring terminal (34), wherein the third wiring terminal (33) and the fourth wiring terminal (34) are connected with the second traction net (3) through connecting wires.

2. The multifunctional comprehensive compensation device of the traction power supply system of the multi-wire electrified railway according to claim 1, characterized in that the first comprehensive compensation device (22) comprises a fixed capacitor (6), a first thyristor (7), a second thyristor (8) and a reactor (9);

the fixed capacitor (6) is connected with the first wiring terminal (23) through a connecting wire.

3. The multifunctional comprehensive compensation device of the traction power supply system of the multi-line electrified railway as claimed in claim 2, wherein the first thyristor (7) and the second thyristor (8) are connected in parallel to the parallel circuit (10) in an inverse manner, a reactor (9) is further connected in series to the parallel circuit (10), and the parallel circuit (10) is further connected with the second connection terminal (24) through a connection line.

4. The multifunctional integrated compensation device for the traction power supply system of the multi-line electrified railway according to claim 1, wherein the internal electrical structure of the second integrated compensation device (32) is the same as the internal electrical structure of the first integrated compensation device (22).

5. The multifunctional comprehensive compensation device for the traction power supply system of the multi-line electrified railway according to claim 1, wherein the first connection terminal (23) of the first comprehensive compensation device (22) is connected with the fourth connection terminal (34) of the second comprehensive compensation device (32) through a first connection wire (4), and the first connection wire (4) is provided with a first control switch (5).

6. The multifunctional comprehensive compensation device of the traction power supply system of the multi-line electrified railway according to claim 1, wherein the second connection terminal (24) of the first comprehensive compensation device (22) is connected with the third connection terminal (33) of the second comprehensive compensation device (32) through a second connection wire (41), and a second control switch (51) is arranged on the second connection wire (41).