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Method for acquiring traction current disturbing amount during arc burning of bow net, and arc burning detection device

A technology of traction current and acquisition method, which is applied in the field of catenary detection, can solve the problems of poor pertinence, difficult effective reflection and low efficiency of catenary maintenance

Inactive Publication Date: 2015-03-25
SOUTHWEST JIAOTONG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the research on pantograph-catenary arcing at home and abroad is limited to the detection of arcing rate, and the arcing rate is the overall macro index of the line, which is difficult to effectively reflect the local conditions of the catenary line, and the pertinence for catenary maintenance is poor , less efficient

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  • Method for acquiring traction current disturbing amount during arc burning of bow net, and arc burning detection device
  • Method for acquiring traction current disturbing amount during arc burning of bow net, and arc burning detection device
  • Method for acquiring traction current disturbing amount during arc burning of bow net, and arc burning detection device

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Embodiment Construction

[0054] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0055] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0056] Such as figure 1 The non-contact pantograph-catenary arcing energy detection device provided in the present invention includes a roof detection part 2 installed on the rear end of the pantograph-catenary system 1; and an in-vehicle detection part 3 installed in the compartment at the bottom of the pantograph, and The roof detection part 2 is connected by communication.

[0057] Such as figure 2 , the present invention discloses another embodiment of the non-contact pantograph-catenary arcin...

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Abstract

The invention discloses a method for acquiring the traction current disturbing amount during arc burning of a bow net, and an arc burning detection device, and relates to the technical field of overhead line detection. The technical key points are as follows: the method comprises the steps of acquiring a train traction current signal and an arc-burning electrical signal of the bow net simultaneously, and removing a trend term from the traction current signal; carrying out windowing on detrended traction current information, and calculating the wavelet packet singular entropy value of the current signal in each time window; dividing the time into three stages before and after the arc burning during the arc burning according to the arc-burning electrical signal of the bow net; calculating the mean value of the wavelet packet singular entropy values of all time frames; averaging the entropy values before and after the arc-burning to obtain a reference value; and calculating the change of the mean entropy value during the arc burning relative to a reference value to obtain the disturbance amount of the traction current during the arc burning, and the like.

Description

technical field [0001] The invention relates to the technical field of catenary detection, in particular to a pantograph-catenary arc detection device and a current quality evaluation method. Background technique [0002] The catenary is an important part of the traction power supply system, and the pantograph is the key component for the electric train to obtain electric energy. The good dynamic contact performance of the catenary and the pantograph is the premise guarantee for the normal operation of the electric train. However, the good mechanical contact between catenary and pantograph is restricted by many other factors, such as catenary suspension, catenary wire material, defects of pantograph slide plate and track irregularity, etc. If the above influencing factors exist, there may be a slight bad contact between the contact wire and the contact surface of the pantograph, and arcing may occur between the pantograph and catenate. The occurrence of this discharge pheno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61C3/00B60M1/02B61L1/20
CPCB61C3/00B60M1/02B61L1/20
Inventor 于龙蒲文旭赵文军卢兵
Owner SOUTHWEST JIAOTONG UNIV
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