A method for identifying the running direction of trains in the direct supply traction network of a single-track electrified railway
A technology for electrified railways and running directions, applied in railway signaling and safety, etc., can solve single problems, and achieve the effect of convenient implementation, easy engineering practice, simple and reliable algorithm principle
Active Publication Date: 2022-08-05
SOUTHWEST JIAOTONG UNIV
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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
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[0018] The present invention will be described in detail below with reference to 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, the current component at the head end of section n is collected synchronously in real time and terminal current components After the time delay Δt, real-time synchronous acquisition of the current component at the head end of section n and terminal current components Train running direction identification criterion △D n It can be calculated by formula (1), (2), (3), k is the reliability coefficient, according to △D n The value range is divided into three cases:
[0021]
[0022]
[0023] △D n =k(R n (t)-R n (t+△t)) (3) where: current component at the head end of segment n at time t and t...
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The invention specifically relates to a method for identifying the running direction of a train in a direct supply traction network of a single-track electrified railway. The present invention mainly divides the direct supply traction network into N sections, assuming that there is a train running to be identified in the nth section of the direct supply traction network, and then calculates and determines the data by collecting the circuit components at the beginning and end of the section. Determine the running direction of the train. The beneficial effects of the present invention are: 1) the prior art can only judge the running state of the train in the single-line direct supply traction network, and lacks the ability to identify the running direction of the train; The relay protection cooperation of the traction network provides an important foundation; 3) the algorithm of the invention is simple and reliable in principle, easy to implement, and can be directly applied to the existing measurement and control system, which is convenient for engineering practice.
Description
technical field [0001] The invention specifically relates to a method for identifying the running direction of a train in a direct supply traction network of a single-track electrified railway. Background technique [0002] The direct supply traction network has a simple structure and high power supply reliability, and is widely used in the traction power supply system of electrified railways in my country. In the direct supply traction network of the double-track electrified railway, the train travels in the up and down power supply arms according to a fixed direction. The existing train operating state identification method can effectively identify the traction, inertia and braking operation states of the train in the direct supply traction network. However, there is only a single power supply arm in the direct supply traction network of the single-line electrified railway, and the train can travel in both directions, and the running direction of the train needs to be furt...
Claims
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IPC IPC(8): B61L25/02
CPCB61L25/023
Inventor 王帅李群湛易东陈民武
Owner SOUTHWEST JIAOTONG UNIV