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Rail transit grounding carbon brush abrasion monitoring and self-adaptive regulation and control system

A self-adaptive regulation and rail transit technology, applied in instrumentation, transportation and packaging, and measurement using digital measurement technology, can solve problems such as uneven wear of grounding carbon brushes, achieve simple and single adjustment actions, optimize car body circulation and Car body overvoltage problem, the effect of improving economy

Active Publication Date: 2021-07-16
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To solve the problem of non-uniform wear of grounding carbon brushes in the process of grounding return flow of high-speed trains, the invention provides a monitoring and self-adaptive control system for grounding carbon brushes in rail transit

Method used

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  • Rail transit grounding carbon brush abrasion monitoring and self-adaptive regulation and control system
  • Rail transit grounding carbon brush abrasion monitoring and self-adaptive regulation and control system

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] When the train is working normally, the high-speed train obtains 25KV power frequency high-voltage AC power from the catenary 2 through the pantograph 3 to drive the train. Such as figure 1 , the traction current passes through the primary side of the traction transformer 5 to provide electric energy for the traction converter and traction motor 4 driving the locomotive. Such as figure 2 , the working grounding current flows out from the traction transformer 5 and flows into the rail 8 through the sensor monitoring and control device 20 and the grounding carbon brush 19 between the grounding carbon brush 19 and the steel rail 8, and the protection grounding current is passed by the car body 6 through the grounding carbon brush 19, The sensor monitoring and control device 20 between the rails 8 and the ground carbo...

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Abstract

The invention discloses a rail transit grounding carbon brush abrasion monitoring and self-adaptive regulation and control system. A sensor monitoring and control device is arranged on each grounding carbon brush of working grounding and protection grounding between a vehicle body and a steel rail; and the sensor monitoring and control device is composed of a current transformer, a current detection module, an A / D analog-to-digital conversion module, a signal comparator, a microprocessor module, a signal amplifier, a data acquisition card, a filtering module, a pressure-sensitive sensor, a laser sensor and a variable resistance module. According to the invention, the current of each wheel set can be effectively balanced to balance the abrasion degree of the grounding carbon brush, so that the durability and economical efficiency of the grounding system of the motor train unit are improved, and the over-high economic cost and labor and time cost caused by inconvenient detection of the grounding carbon brush in the train body maintenance process are avoided.

Description

technical field [0001] The invention belongs to the technical field of high-speed rail transit grounding, and in particular relates to a rail transit grounding carbon brush wear monitoring and self-adaptive control system. Background technique [0002] As a powerful engine to promote my country's economic development, the rapid development of high-speed rail is of strategic significance to the country. With the continuous improvement of the demand for operating speed and load capacity, whether the high-speed train grounding system has high efficiency and high reliability directly determines whether the train power supply system can operate safely and stably. [0003] The EMU grounding system is divided into working grounding and protective grounding from the electrical function. Under normal operating conditions, the grounding system provides a return channel for the main circuit of the traction system through the working grounding, and ensures the equipotential between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L15/00G01B21/08G01B11/06G01R19/25
CPCB61L15/0081G01B21/08G01B11/06G01R19/25
Inventor 肖嵩朱涛顾颐杨坤龚开元郑嘉仪曹浩然蔡熙辰李俊颉刘月婷赵晨
Owner SOUTHWEST JIAOTONG UNIV
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