Single-line electrified railway direct supply traction network train running direction identification method

A technology for electrified railways and running directions, applied in railway signaling and safety, etc., can solve problems such as singleness, and achieve the effect of convenient implementation, simple and reliable algorithm principle, and easy engineering practice.

Active Publication Date: 2021-07-23
SOUTHWEST JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, there is only a single power supply arm in the single-line electrified railway direct supply traction network, and the train can travel in both directions, so the direction of the train needs to be further identified

Method used

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  • Single-line electrified railway direct supply traction network train running direction identification method
  • Single-line electrified railway direct supply traction network train running direction identification method
  • Single-line electrified railway direct supply traction network train running direction identification method

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] The working principle of the present invention is:

[0020] Assume that there are trains to be identified in the traction network in section n, where n=1, 2, 3...N is the section number, and the section length is L n . At the initial time t, real-time synchronous acquisition of the current component at the head end of section n and terminal current components After a time delay △t, real-time synchronously collect the head-end current component of section n and terminal current components Identification criterion of train running direction △D n It can be calculated from formulas (1), (2) and (3), k is the reliability coefficient, according to △D n The value range is divided into three situations:

[0021]

[0022]

[0023] ΔD n =k(R n (t)-R n (t+△t)) (3)

[0024] In the formula: the head-end current component of section n at...

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Abstract

The invention particularly relates to a single-line electrified railway direct supply traction network train running direction identification method. According to the method, after the direct supply traction network is divided into N sections, what is assumed is that a train to be identified runs in the direct supply traction network in the nth section, and then the running direction of the train is judged after judgment data are collected and calculated through head and tail circuit components of the sections. The method has the beneficial effects that 1) the prior art can only judge the train running state in the single-line direct supply traction network and lacks the train running direction identification capability; 2) a traction network train state measurement and control method is perfected, and an important basis is provided for relay protection cooperation of the train and the single-line direct supply traction network; and 3) the algorithm is simple and reliable in principle and convenient to implement, can be directly applied to the existing measurement and control system, and is convenient for engineering practice.

Description

technical field [0001] The invention specifically relates to a method for identifying the running direction of a train on a direct-supply traction network of a single-line electrified railway. Background technique [0002] The direct-supply traction network has a simple structure and high power supply reliability, and is widely used in traction power supply systems for electrified railways in my country. In the direct-supply traction network of double-track electrified railways, trains run in the up and down power supply arms in a fixed direction. The existing train operating state identification methods can effectively identify the traction, inertia and braking operation states of trains in the direct-supply traction network. However, there is only a single power supply arm in the single-line electrified railway direct supply traction network, and the train can travel in both directions, so the direction of the train needs to be further identified. In this context, through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L25/02
CPCB61L25/023
Inventor 王帅李群湛易东陈民武
Owner SOUTHWEST JIAOTONG UNIV
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