System for automatically judging and positioning faults of automatic blocking and continuous railway power lines in railway distribution network

Abstract

The invention discloses a system for judging and positioning the faults of an automatic blocking and continuous railway power line in a railway distribution network, comprising an intelligent fault judgment device, a data transmission device and a master station monitoring system, wherein the intelligent fault judgment device is used for detecting a signal in real time, carrying out fault judgment, displaying a fault type and sending fault information to the data transmission device; the data transmission device is used for receiving the fault information sent by the intelligent fault judgment device, repackaging data and sending a data message including the fault type, fault position, fault phase and fault time information to the master station monitoring system; and the master monitoring system is used for receiving and processing the fault information returned by the data transmission device, displaying the fault position, the fault phase and the fault type on a monitor, giving information prompts of a fault tower number, the fault phase and the fault time and informing a line manager in a manner of short message. By means of the system, the fault positioning manner is changed, manual blind line inspection or switching-on of a telecontrol switch is not needed and the fault positioning can be rapidly determined through a control interface of a monitoring center.

Description

technical field [0001] The invention relates to a system for automatically judging and locating faults of a self-closing through line of a railway distribution network. Background technique [0002] In recent years, with the large-scale speed increase of railways and the construction of high-speed railways, the requirements for the reliability of power grid power supply are getting higher and higher. my country's railway distribution network generally adopts self-closing and through lines as backup for each other to supply power for railway signal power, and the voltage level is mainly 10kV. In order to ensure the safety of railway transportation, there are high requirements for the reliability of the self-closing through line and the rapid recovery of faults. If the power supply is interrupted, it will lead to confusion of the self-closing signal and affect the normal transportation of the railway. [0003] The existing railway distribution network mostly adopts a small cu...

AI Technical Summary

Problems solved by technology

The non-electric telecontrol section is pulled by people, which is time-consuming and laborious; although the telecontrol section can be pulled and closed by telecontrol, it is still judged by section-by-section trial delivery, which takes a certain amount of time. The power equipment of the system is impacted by high fault current for many times, which is easy to damage the equipment. For example, the high current impact can reduce the service life of the voltage regulator, and cause the voltage regulator to burn out in severe cases; the second is the unknown cause caused by soft fault or transient There is no way to search for tripping. At present, it is only possible to search for a needle in a haystack by manpower within the scope of a power supply arm (40-70KM), and it is often difficult to find the fault point, and the hidden danger is difficult to eliminate; The number of switch settings is restricted by factors such as construction, operation and maintenance costs, and the number of settings is limited

This has caused problems such as long power outage search time, high labor intensity and low efficiency when it is necessary to check the concealed fault by climbing the pole.

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