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Uninsulated track compensation capacitor fault rapid test device and method

A technology that compensates capacitors and has no insulation. It is applied in the direction of measuring devices, measuring electricity, and only measuring voltage. It can solve the problems of high equipment cost, heavy workload, and poor timeliness. It achieves simple algorithms, improves work efficiency, and avoids time-consuming and laborious Effect

Inactive Publication Date: 2020-02-14
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the inventor found that the method of judging whether the compensation capacitor is faulty by measuring and calculating the capacitance value has the problems of low efficiency and heavy workload; the method of performing state detection and actual effect analysis on the compensation capacitor by the section inspection vehicle has equipment costs. Problems of high and poor timeliness

Method used

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  • Uninsulated track compensation capacitor fault rapid test device and method
  • Uninsulated track compensation capacitor fault rapid test device and method
  • Uninsulated track compensation capacitor fault rapid test device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0035] When there is no capacitance fault in the non-insulated track, the voltage amplitude on the track in the section from the track sending box to the receiving box shows a gradual attenuation trend, and when passing through the compensation capacitor point, the voltage amplitude will be compensated to a certain extent For details, see the description of the voltage distribution in the track in the "Railway Signal Maintenance Rules-Technical Standard II" issued by the Ministry of Railways of China.

[0036] The non-insulated track circuit structure can be simplified as figure 1 As shown, the non-insulated track circuit is inductive as a whole, and the signal is transmitted on the track. The compensation capacitor acts to reduce signal attenuation.

[0037] Under normal signal transmission, the signal energy attenuation is above the standard value (the value at which the signal can be transmitted normally).

[0038] Compensation capacitor failure manifests as three phenome...

Embodiment 2

[0072] In one or more embodiments, a non-insulated track compensation capacitor fault rapid detection system is disclosed, referring to Figure 8 , the system is designed in the form of a trolley as a whole, including: the axle part, the bracket part, the instrument body design and the push-pull part;

[0073] Among them, the connection and positioning of the trolley and the non-insulated guide rail are completed through the axle part, which is arranged on the chassis of the trolley, and the axle part includes wheels that match the non-insulated guide rail. The entire instrument will not slip off the track; the push-pull part includes a push rod connected to the chassis of the trolley, which can push the trolley to slide back and forth on the non-insulated guide rail through the push rod. Of course, those skilled in the art can also design the trolley as a remote-controlled trolley according to needs, and realize the sliding of the trolley on the non-insulated guide rail by me...

Embodiment 3

[0079] In one or more embodiments, a method for rapid detection of compensation capacitance faults on non-insulated track is disclosed, which specifically includes the following process:

[0080] Collect the rail surface voltage value, get the effective value of frequency and amplitude, and display the frequency and effective value on the LCD screen;

[0081] Collect the Hall switch pulse signal and calculate the distance traveled by the car;

[0082] According to the calculated distance of the trolley, the rail surface voltage value is displayed on the screen every 10 meters and stored, and multiple rail surface voltage values ​​are drawn into a curve;

[0083] Analyze the distribution and law of rail surface voltage values, and judge whether the capacitor is good or bad according to the capacitor fault criterion.

[0084] According to the rail surface voltage partition curve in "Railway Signal Maintenance Rules-Technical Standard II", it can be seen that according to the me...

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Abstract

The invention discloses an uninsulated track compensation capacitor fault rapid test device and method. The device comprises a controller and two paths of inputs connected with the controller; the first path of input measures a rail surface voltage of an uninsulated rail, and adjusts the voltage signal into a signal which can be identified by the controller after signal processing, and the signalsare synchronously sampled by a synchronous sampling circuit and then sent to the controller; the second path of input acquires a measurement distance signal, converts the measurement distance signalinto a pulse signal and sends the pulse signal to the controller; the controller analyzes whether a rail surface voltage change rule meets the requirement or not according to the received signals, sothat compensation capacitor fault detection and determination are achieved. The change rule of the rail surface voltage distribution curve of the uninsulated track is used as the basis for determiningwhether the capacitor fails or not, other signals do not need to be injected, transmission of rail signals is not affected, and the quality of the compensation capacitor can be accurately determined.

Description

technical field [0001] The invention relates to the technical field of non-insulated track circuit compensation capacitance measurement, in particular to a non-insulated track compensation capacitance fault quick detection device and method. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Non-insulated track circuit compensation capacitor is an important technical accessory for ZPW-2000(UM) series non-insulated track circuit, which is directly related to the safe and reliable operation of automatic block, locomotive signal on-board system equipment and overspeed protection system. The nominal value of the compensation capacitor is between 22uF and 90uF, and it is connected between the tracks through leads such as plugs or copper terminals. In the "TJDW134-2007 Technical Conditions for Compensating Capacitors for Non-insulated Track Circui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R19/00
CPCG01R19/0084G01R31/00
Inventor 刘广敏王知学侯恩广乔昕
Owner SHANDONG JIAOTONG UNIV