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Single-ended traveling wave fault location device for catenary

A single-ended traveling wave, positioning device technology, applied in the fault location, detecting faults according to the conductor type, etc., can solve the problem that the positioning accuracy is difficult to meet the requirements, inconvenient to repair and maintain, occupy a large space, etc., to enhance the resistance of the device. Interference ability, easy maintenance, and the effect of less space

Active Publication Date: 2018-09-21
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the short-circuit fault location of the traveling wave method mainly adopts the double-terminal positioning method, but the double-terminal positioning requires the installation of positioning devices at both ends of the line. difficult to meet

Method used

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  • Single-ended traveling wave fault location device for catenary
  • Single-ended traveling wave fault location device for catenary
  • Single-ended traveling wave fault location device for catenary

Examples

Experimental program
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Embodiment

[0038] Below in conjunction with the accompanying drawings and embodiments, the catenary single-ended traveling wave fault location device of the present invention will be described in detail:

[0039] 1. Overall.

[0040] Such as figure 1 As shown, the catenary single-ended traveling wave fault location device includes a catenary access current, voltage and backflow full information data acquisition unit 1, an event-triggered fault information preservation unit 2, a short-circuit fault identification unit 3, a short-circuit fault location unit 4 and Fault display and alarm unit 5.

[0041] The input terminal of the catenary access current, voltage and backflow full information data acquisition unit 1 has 2 current and 2 voltage analog detection access terminals, which are respectively connected to the current transformers ( CT1 and CT2) and voltage transformers (PT1 and PT2) and the current transformer (CT3) of the return line, the output terminal is connected to the input ...

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PUM

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Abstract

The present invention discloses an overhead contact system single-ended traveling wave fault positioning device, and relates to an overhead contact system fault positioning technology. The overhead contact system single-ended traveling wave fault positioning device is equipped with an overhead contact system access current, an overhead contact system access voltage, a backflow perfect information data acquisition unit, an event trigger fault information preserving unit, a short circuit fault identification unit, a short circuit fault positioning unit and a fault display and alarm unit. A current transformer and a voltage transformer are accessed in a connection line of a traction station and an overhead contact system, and by real-timely detecting and analyzing the instantaneous waveforms of a current and a voltage, the fault types are identified, and the fault occurrence places are determined. The overhead contact system single-ended traveling wave fault positioning device of the present invention is used for the electrified railway overhead contact system short circuit fault positioning, and has the characteristics of simple structure, high precision and reliability and few investment.

Description

technical field [0001] The invention relates to a catenary short-circuit fault location technology, in particular to a catenary single-end traveling wave fault location device. Background technique [0002] In the entire electrified railway, the catenary is responsible for the important task of directly supplying the electric energy obtained from the traction substation to the electric locomotive. The catenary is the key to the good flow and safe operation of the electric locomotive, and directly affects the transportation of the electrified railway. The catenary is exposed to the harsh outdoor environment for a long time, and is mechanically impacted by the pantograph of the electric locomotive, which easily leads to failure. If the catenary breaks down, the short-circuit current flowing through the short-circuit point and nearby power equipment may reach several times or even dozens of times the rated current, which will cause serious damage to the electrical equipment, af...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08
CPCG01R31/086
Inventor 李晓明江建飞李晶杨超穆君雄
Owner WUHAN UNIV
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