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Comprehensive monitoring device for traction power supply of urban rail transit

A technology for urban rail transit and traction power supply, which is applied in the directions of measuring devices, measuring electricity, measuring electrical variables, etc. It can solve the problems of cumbersome maintenance, complicated wiring, and many equipment, and achieve a large amount of transmitted data, high signal reliability, and increased The effect of data volume

Pending Publication Date: 2017-08-29
北京交通大学长三角研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, many devices are used, the wiring is complicated, and the daily maintenance is cumbersome; and when there are many quantities to be displayed, the instrument panel area is large, which is not convenient for monitoring multiple analog quantities at the same time
In addition, the system cannot realize long-distance monitoring

Method used

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  • Comprehensive monitoring device for traction power supply of urban rail transit
  • Comprehensive monitoring device for traction power supply of urban rail transit
  • Comprehensive monitoring device for traction power supply of urban rail transit

Examples

Experimental program
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Embodiment Construction

[0011] The comprehensive monitoring device for urban rail transit traction power supply of the present invention will be further described below in conjunction with the drawings and specific implementation methods.

[0012] As shown in the figure, the traction power supply comprehensive monitoring device for urban rail transit of the present invention includes a plurality of rectifier units connected in parallel in the traction power supply system, and each rectifier unit is composed of two PWM rectifiers and a transformer on the AC side. There are N rectifier units in the power supply system, so the monitoring platform needs to monitor and display the working status of a total of 2N PWM rectifiers. In order to mark the working status of each PWM rectifier, a total of 11 analog signals and 12 digital signals need to be monitored. , the mathematical model of the PWM rectifier is as follows:

[0013]

[0014] Among them, U a ,U b and U c is the AC output voltage of the PWM...

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PUM

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Abstract

The invention discloses a comprehensive monitoring device for traction power supply of urban rail transit. The comprehensive monitoring device comprises a plurality of rectifier units. Each rectifier unit is composed of two PWM rectifiers and an AC side transformer. Each PWM rectifier is connected to a data acquisition unit through the respective data acquisition node. The data acquisition unit is connected to an Ethernet switch through the Ethernet communication node, and the Ethernet switch is connected to a monitoring computer through the industrial Ethernet. The data acquisition unit can collect the relevant feature quantity of the corresponding PWM rectifier and upload the collected data to the monitoring computer through the industrial Ethernet for data transmission. With the above structure, the Ethernet communication and the visualization interface are combined, the monitoring platform uses the dynamic link library for Ethernet network and data management, gives full play to the advantages that the Ethernet transmission distance is far, the amount of transmission data is large and the signal reliability is high, and increases the amount of data transmitted to achieve a long-distance monitoring of the traction power supply system.

Description

technical field [0001] The invention relates to an urban rail transit traction power supply technology, in particular to a comprehensive monitoring device for urban rail transit traction power supply. Background technique [0002] DC power supply is an important industry closely related to the national economy and people's livelihood that the country is vigorously developing at present. DC power supply devices have important applications in urban rail transit, mine traction, port cranes and other fields, and have broad prospects. In the existing DC power supply system, traditional instruments are used in many places for the monitoring and display of various electrical and non-electrical quantities of the system. In this way, many devices are used, the wiring is complicated, and the daily maintenance is cumbersome; and when there are many quantities to be displayed, the instrument panel area is large, which is not convenient for monitoring multiple analog quantities at the sa...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 王磊沈茂盛常广张皖俊
Owner 北京交通大学长三角研究院
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