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Ballast resistance online monitoring method of jointless track circuit

A track circuit, non-insulated technology, applied in the direction of measuring resistance/reactance/impedance, measuring devices, measuring electrical variables, etc., can solve the problems that cannot meet the measurement requirements of track circuit parameters, track circuit inlet voltage fluctuations, and test result errors. Achieve reliable measurement results, satisfactory measurement accuracy and precision, and good anti-noise performance

Inactive Publication Date: 2012-07-11
BEIJING JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

This method is easy to operate, and the test can be completed indoors. However, in practice, the change of the inlet voltage is affected by many factors, which can easily cause fluctuations in the inlet voltage of the track circuit, and the detection results will bring large errors or even errors.
With the rapid development of railways and the increase of transportation volume, traditional measurement methods can no longer meet the measurement requirements for track circuit parameters

Method used

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  • Ballast resistance online monitoring method of jointless track circuit
  • Ballast resistance online monitoring method of jointless track circuit
  • Ballast resistance online monitoring method of jointless track circuit

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Embodiment Construction

[0019] According to the transmission line theory, when the equivalent impedance at the beginning of the track circuit, the equivalent impedance at the end, the shunt resistance value, the compensation capacitance value, and the primary parameters of the track circuit (ie, rail impedance and ballast resistance) are known, the track can be calculated. The short-circuit current when the circuit is short-circuited at any point along the line, so as to obtain the short-circuit current curve of the track circuit. Since the induced voltage of the locomotive signal has a linear relationship with the short-circuit current of the track circuit, the amplitude envelope of the induced voltage of the locomotive signal can be used to replace the short-circuit current curve, that is, the amplitude envelope of the induced voltage of the locomotive signal can reflect the track circuit under specific parameter conditions General characteristics of the circuit.

[0020] The embodiment of the pres...

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Abstract

The invention relates to a ballast resistance online monitoring method of a jointless track circuit. The method comprises the following steps: getting the length of a main track and an attenuation factor of the jointless track circuit; selecting a ballast resistance resolution expression; calculating a ballast resistance value according to the length of the main track and the attenuation factor; and sending the ballast resistance value to a ground monitoring client, wherein the calculation of ballast resistance is realized in a locomotive signal vehicle-mounted system. According to the ballast resistance online monitoring method, the ballast resistance value of the jointless track circuit can be simply and quickly calculated, the measurement accuracy is high, and the anti-noise performance is better; and furthermore, the ballast resistance online monitoring method only relies on an existing locomotive signal system, any hardware equipment does not need to be increased, the monitoring cost is low, and the ballast resistance online monitoring method is conductive to whole-line popularization and use of a railway.

Description

technical field [0001] The invention relates to the field of railways, and relates to an on-line monitoring method, in particular to an on-line monitoring method for non-insulated track circuit ballast resistance. technical background [0002] The track circuit is one of the most important infrastructures in the railway signaling system, and has become an extremely important basic equipment in the automatic control of railway transportation in my country. The track circuit is a circuit composed of two rails of the railway line as conductors, insulated or electrically separated at both ends and connected to the power transmission equipment and power receiving equipment. It is used to realize the inspection of the train track occupation and the integrity of the rail line. It is the channel for information transmission of the train operation control system. At present, non-insulated track circuits are the most widely used on my country's railways. The non-insulated track circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/08
Inventor 赵林海冉义奎
Owner BEIJING JIAOTONG UNIV
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