Electrified railway traction backflow performance test system

Abstract

The utility model discloses an electrified railway traction backflow performance test system. According to an existing newly-built railway, railway joint debugging, joint test and dynamic detection are generally carried out through train operation; and after a problem is found, rectification is carried out. According to the utility model, a remote control module, a backflow current monitoring module and a backflow state display module are respectively connected with a comprehensive control system; the remote control module receives a signal of the control system and controls the adjustable reactor, and the reactor is used for generating adjustable alternating current; the reactor is respectively connected with the contact line and the steel rail; the backflow current monitoring module is connected with the centralized grounding box and is used for monitoring each loop current of the centralized grounding box; and the backflow state display module is used for displaying the current magnitude of each backflow loop and the proportion of the current of each backflow loop in the total backflow. According to the utility model, before railway joint debugging and test and dynamic detection are carried out on a newly built railway, the performance test is carried out on the traction backflow system, and problems existing in the system can be found in advance.

Description

Technical Field

[0001] The utility model belongs to the technical field of traction power supply, and particularly relates to a test system for the performance of traction return current in electrified railways. Background Technique

[0002] During the energy-taking process of electric locomotives, the traction current flows out from the traction substation, flows into the catenary through the feeder and is transmitted along the railway line, then flows into the electric locomotive through the pantograph, drives the locomotive motor to operate, then flows out through the locomotive wheelset, and finally flows back to the traction substation through paths such as rails, return lines, and the earth, thus forming a complete power supply loop. Traction return current refers to the general term for the current that flows out from the electric locomotive and then flows back to the traction substation through various paths. In newly built railways, railway joint debugging and dynamic detection are usually carried out. The distribution ratio of traction substation return current is an important monitoring parameter in dynamic monitoring. Among them, if the proportion of the ground grid return current of the traction substation in the total return current is too high or too low, it will affect the dynamic acceptance work of railway projects. Generally, in newly built railways, railway joint debugging and dynamic detection are carried out by train operation. After problems are found, rectification is carried out, which prolongs the formal operation cycle of the entire railway and results in high costs. Content of the Utility Model

[0003] In order to make up for the deficiencies of the prior art, the utility model provides a test system for the performance of traction return current in electrified railways. Before railway joint debugging and dynamic detection are carried out in newly built railways, the traction return current performance test is carried out on the traction return current system, which can discover problems existing in the return current system in advance, improve the acceptance quality of the dynamic acceptance work of railway projects, reduce later engineering modifications, and ensure the safety of the return current system.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A test system for the performance of traction return current in electrified railways, characterized in that:

[0006] It includes an integrated control system, a remote control module, a return current monitoring module, and a return current state display module; the remote control module, the return current monitoring module, and the return current state display module are respectively connected to the integrated control system;

[0007] The remote control module receives the control signal of the integrated control system and remotely controls the adjustable reactor, and the adjustable reactor is used to generate adjustable alternating current;

[0008] The adjustable reactor is respectively connected to the catenary and the rail through cables;

[0009] The reflux current monitoring module is connected to the centralized grounding box and is used to monitor the current of each loop in the centralized grounding box; the reflux current monitoring module transmits the collected current data of each loop to the integrated control system;

[0010] The reflux state display module is used to display the magnitude of the current of each reflux loop and the proportion of the current of each reflux loop in the total reflux.

[0011] Further, the integrated control system calculates the proportion of the current of each reflux loop in the total reflux according to the collected current data of each loop.

[0012] Further, the adjustable reactor includes an exciter, a magnetic valve reactor, a current transformer and a data transmission unit.

[0013] Further, the integrated control system outputs a control signal to the remote control module for the adjustable reactor, and the exciter is remotely controlled to adjust the alternating current.

[0014] Further, the adjustable alternating current data generated by the adjustable reactor is transmitted to the integrated control system through the data transmission unit.

[0015] Further, the reflux current monitoring module is a multi-channel data monitoring module, and each channel monitors the current data of one loop.

[0016] Further, the integrated control system can store and analyze the data transmitted by the data transmission unit.

[0017] Advantages of the utility model:

[0018] 1) The utility model generates adjustable alternating current through an adjustable reactor, the reflux current monitoring module monitors the current of each loop in the centralized grounding box, the integrated control system calculates the proportion of the current of each reflux loop in the total reflux according to the collected current data of each loop, and the reflux state display module is used to display the magnitude of the current of each reflux loop and the proportion of the current of each reflux loop in the total reflux;

[0019] 2) Before the railway joint debugging and dynamic detection are carried out on the newly built railway, the traction reflux performance test is carried out on the traction reflux system of the utility model, which can discover the problems existing in the reflux system in advance, improve the acceptance quality of the dynamic acceptance work of the railway project, reduce the later project transformation, and ensure the safety of the reflux system. Description of the drawings

[0020] Figure 1 is a schematic structural diagram of the utility model;

[0021] Figure 2 is a schematic structural diagram of the adjustable reactor in the utility model;

[0022] Figure 3 This is a schematic diagram of the reflux test of the reflux current monitoring module in the present utility model. Specific embodiments

[0023] The present utility model will be described in detail below in conjunction with specific embodiments.

[0024] As Figure 1 shown, the present utility model includes five modules: an integrated control system 1, an adjustable reactor 2, a remote control module 3, a reflux current monitoring module 4, and a reflux status display module 5;

[0025] The remote control module 3, the reflux current monitoring module 4, and the reflux status display module 5 are respectively connected to the integrated control system 1, and the integrated control system 1 conducts overall control of the electrified railway traction reflux performance test system;

[0026] The remote control module 3 receives the control signal from the integrated control system 1, and the remote control module 3 remotely controls the operation of the adjustable reactor 2; As Figure 2 shown, the adjustable reactor 2 includes an exciter 21, a magnetic valve reactor 22, a current transformer 23, and a data transmission unit 24; The adjustable reactor 2 receives a control signal output from the integrated control system 1 to the remote control module 3, and remotely controls the exciter 21 to achieve the adjustment of the alternating current;

[0027] The adjustable reactor 2 is connected to the 27.5 kV catenary and the rail through cables respectively; The exciter 21 receives the control signal to control the magnetic valve reactor 22, adjusts the alternating current output between the catenary and the rail, and at the same time the current transformer 23 measures the output current, and the current data is transmitted to the integrated control system 1 by the data transmission unit 24;

[0028] The adjustable reactor 2 is used to generate an adjustable alternating current, and the generated adjustable alternating current signal finally returns to the traction transformer; The adjustable reactor is a kind of reactor that can adjust its inductance value, and it realizes the adjustment of the circuit impedance by changing the internal electrical parameters; Compared with the traditional fixed reactor, the adjustable reactor has higher flexibility and controllability;

[0029] The integrated control system 1 can store and analyze the data transmitted by the data transmission unit 24; The adjustable reactor 2 is not directly connected to the integrated control system 1, but can accept the control instructions issued by the remote control module and transmit data to the integrated control system;

[0030] As Figure 3As shown, the return current monitoring module 4 is connected to the centralized grounding box. When the adjustable AC current signal returns to the traction transformer through circuits such as the rail, the return current monitoring module 4 monitors the current of each circuit in the centralized grounding box, and the return current monitoring module 4 transmits the collected current data of each circuit to the integrated control system 1; the return current monitoring module 4 is a multi-channel data monitoring module, and each channel monitors the current data of one circuit.

[0031] The integrated control system 1 can store and analyze the monitoring data of the return current monitoring module 4. The integrated control system 1 calculates the proportion of the current of each return circuit in the total return current based on the collected current data of each circuit. The return status display module 5 is used to display the magnitude of the current of each return circuit and the proportion of the current of each return circuit in the total return current.

[0032] In the description of the present invention, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] The content of the present invention is not limited to the examples listed. Any equivalent transformation of the technical solution of the present invention adopted by those of ordinary skill in the art by reading the specification of the present invention is covered by the claims of the present invention.

Claims

1. An electrified railway traction return performance test system, characterized by: It comprises an integrated control system (1), a remote control module (3), a reflux current monitoring module (4) and a reflux status display module (5); the remote control module (3), the reflux current monitoring module (4) and the reflux status display module (5) are respectively connected to the integrated control system (1); The remote control module (3) receives a control signal from the integrated control system (1) and remotely controls an adjustable reactor (2), wherein the adjustable reactor (2) is used to generate an adjustable alternating current; The adjustable reactor (2) is connected to the contact wire and the rail respectively through cables; The return current monitoring module (4) is connected to the centralized grounding box and is used to monitor the current of each loop of the centralized grounding box; the return current monitoring module (4) transmits the collected current data of each loop to the integrated control system (1); The reflux state display module (5) is used to display the magnitude of each reflux loop current and the proportion of each reflux loop current in the total reflux.

2. The electric railway traction return performance test system according to claim 1, characterized in that: The integrated control system (1) calculates the proportion of each return loop current to the total return current based on the collected current data of each loop.

3. The electric railway traction return performance test system according to claim 2, characterized in that: The adjustable reactor (2) comprises an exciter (21), a magnetic valve reactor (22), a current transformer (23) and a data transmission unit (24).

4. The electric railway traction return performance test system according to claim 3, characterized in that: The adjustable reactor (2) outputs a control signal from the integrated control system (1) to the remote control module (3), and the remote control exciter (21) realizes the regulation of the AC current.

5. The electric railway traction return performance test system according to claim 4, characterized in that: The adjustable alternating current data generated by the adjustable reactor (2) is transmitted to the integrated control system (1) via a data transmission unit (24).

6. The electric railway traction return performance test system according to claim 5, characterized in that: The return current monitoring module (4) is a multi-channel data monitoring module, and each channel monitors a piece of loop current data.

7. The electric railway traction return performance test system according to claim 6, characterized in that: The integrated control system (1) can store and analyze the data transmitted by the data transmission unit (24).

Images