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An Analysis Method of Dynamic Stray Current Distribution in Rail Transit

A stray current, rail transit technology, applied in design optimization/simulation, special data processing applications, etc., can solve problems such as large circuit model errors, simplify the modeling process, solve the problem of oversimplification of calculation methods and low accuracy, The effect of reducing complexity

Active Publication Date: 2022-05-06
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +3
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Problems solved by technology

[0006] from figure 1 It can be seen that the on-resistance R between the node conductance array and the rail 102 and the leakage conductance G of the rail branch st Related, this stray current evaluation model ignores the mutual resistance between rail branches, and the error of the circuit model is large, so it can only be used as an approximate analysis

Method used

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  • An Analysis Method of Dynamic Stray Current Distribution in Rail Transit
  • An Analysis Method of Dynamic Stray Current Distribution in Rail Transit
  • An Analysis Method of Dynamic Stray Current Distribution in Rail Transit

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[0084] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0085] In order to better understand the present invention, the content of the present invention will be further clarified below in conjunction with the examples. The described embodiments are only some examples of the present invention, but the content of the present invention is not limited to the following examples. Those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms are also within the scope of the claims listed in this application.

[0086] refer to figure 2 , the present invention provides a kind of analysis method of rail traffic dynamic stray current distribution, and its steps are as follows:

[0087] S...

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Abstract

The present invention is an analysis method for dynamic stray current distribution of rail transit, which uses the node-branch refinement technology of static rail model to form static rail branch mutual resistance matrix and branch conductance matrix, and introduces the parameters of uplink and downlink The transition resistance matrix forms the decoupling matrix of the up and down rails, and then correlates the traction characteristics of the train with the track nodes to obtain the dynamic node current column vector of the real-time train operation, and finally quickly evaluate the dynamic stray current distribution of rail transit.

Description

technical field [0001] The invention belongs to the research field of the influence of rail traffic stray currents on power grids, and in particular relates to an analysis method for rail traffic dynamic stray current distribution. Background technique [0002] The rail transit system uses traction power supply. Since the rails cannot be perfectly insulated, part of the traction current leaks from the rails into the ground, creating stray currents. Stray currents have a wide range of hazards. First of all, stray currents will cause corrosion of buried metals, seriously endangering the safety of metal foundations and underground pipe networks in cities. Stray currents will also invade the urban power grid system, causing transformer DC bias damage. Because the leakage stray current is related to the traction characteristics of rail transit trains, the rail transit stray current is different from the traditional static stray current model. [0003] State-of-the-art stray c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 徐碧川李唐兵潘卓洪肖黎张晶焯童涛胡睿智张宣刘玉婷陈田
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST