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A Fitting Method of Space Electric Field Amplitude-Frequency Distribution of Airport Omnidirectional Beacon

A technology of space electric field and omni-directional beacon, which is applied in the direction of measuring electricity and electromagnetic field characteristics, measuring electrical variables, etc., can solve the problems of wide frequency analysis, lack of pertinence, and inaccurate data acquisition instruments, etc., and achieve the effect of accurate analysis

Active Publication Date: 2020-10-27
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

In recent years, most of the studies on the high-speed rail electromagnetic interference amplitude-frequency fitting curve directly refer to the results of "Yang'an test": ballasted track is used; 80km / h freight marshalling; the test is only for the pantograph in the common area of ​​the catenary. The space electric field generated by the off-line arc; the data acquisition instrument is not accurate enough; the test data processing adopts 80% no-exceeding rate; the analysis frequency is wide; there is no pertinence
These have not met the electromagnetic compatibility requirements of modern electrified high-speed railways
Chinese Invention Patent Publication No. CN 106324404A provides "A Test System and Analysis Method for Electromagnetic Interference of Electrified Railways to Oil and Gas Pipelines Along the Line", which mentions how to analyze the external electromagnetic interference of electrified railway pantograph-catenary offline arcs, but the test data is still limited to electrified railways The interference current and voltage does not involve space electric field interference

Method used

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  • A Fitting Method of Space Electric Field Amplitude-Frequency Distribution of Airport Omnidirectional Beacon
  • A Fitting Method of Space Electric Field Amplitude-Frequency Distribution of Airport Omnidirectional Beacon
  • A Fitting Method of Space Electric Field Amplitude-Frequency Distribution of Airport Omnidirectional Beacon

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Embodiment Construction

[0032] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0033] The process of drawing the fitting curve of the invention is as follows: figure 1 As shown, the specific operation steps are as follows:

[0034] A. Background test of space electric field

[0035] When no train passes by, test the electric field value around the airport along the electrified high-speed railway, and record the data;

[0036] B. On-site test of space electric field

[0037] When a train passes by, test the electric field value of the space around the airport along the electrified high-speed railway, and record the data;

[0038] C. Electric phase separation test

[0039] When a train passes by, test the space electric field value of the electrical separation phase of the electrified high-speed railway, and record the data; since the train must draw an arc when passing through the electrical separation ph...

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Abstract

The invention provides a method for fitting the amplitude-frequency distribution of the space electric field of an airport omnidirectional beacon. Through the field test data and the method of mathematical statistics, the arc is fitted within the range of 108MHz to 117.975MHz of the omnidirectional beacon frequency band The amplitude-frequency characteristic curve of the space electric field can effectively reflect the relationship between the space electric field and the frequency of the modern electrified railway pantograph catenary offline arc. Draw the fitting curve of space electric field amplitude and frequency in the airport omni-directional beacon frequency band. According to the fitting curve, the interference problem between the amplitude and frequency of the space electric field caused by the pantograph-catenary off-line arc of the electrified railway can be solved.

Description

Technical field: [0001] The invention relates to the technical field of electromagnetic field testing and analysis. Background technique: [0002] Since the pantograph-catenary offline arc of modern electrified railway high-speed trains emits different electric fields at different frequencies, solving the problem of the relationship between the amplitude and frequency of the pantograph-catenary offline arc space electric field emission can predict the pantograph-catenary offline arc space at different frequencies The amount of electric field emission has an important impact on the analysis of its omnidirectional beacon at the airport. The electromagnetic interference test of my country's electrified railway was carried out at Chenggu Airport on Yang'an Line in 1979, hereinafter referred to as "Yang'an Test". In recent years, most of the studies on the high-speed rail electromagnetic interference amplitude-frequency fitting curve directly refer to the results of "Yang'an tes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R29/08
CPCG01R29/0857G01R31/001
Inventor 朱峰鲁楠周涛陈迎迎
Owner SOUTHWEST JIAOTONG UNIV
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