A high-speed railway catenary DC ice-melting load temperature monitoring system

Abstract

The present invention discloses a high-speed train catenary DC ice-melting load temperature monitoring system which comprises a control system, an infrared temperature measurement device, a catenary equivalent series load, a temperature coefficient calibration and overtemperature protection module and a DC ice-melting switch. The catenary equivalent series load is connected to a catenary line. The temperature rise characteristic and resistance characteristic of the catenary equivalent series load are consistent with that of the catenary line. The infrared temperature measurement device is used for detecting the surface temperature of the catenary equivalent series load and transmitting the detection signal to the control system. The high-speed train catenary DC ice-melting load temperature monitoring system has the advantages of simple and compact structure, low cost, convenience in use, and high detection precision, and good controllability.

Description

technical field [0001] The invention mainly relates to the field of power supply of rail transit, in particular to a temperature monitoring system suitable for direct current melting ice load of high-speed railway catenary. Background technique [0002] In recent years, China's high-speed railway has developed rapidly and has gradually become the main force of railway passenger transport. The degree of electrification of the high-speed railway catenary power supply system is getting higher and higher, and the safety requirements are also increasing. In order to ensure the safety of the high-speed railway power supply system in ice and snow weather, the catenary system is equipped with an ice-melting device to effectively eliminate icing on the catenary and ensure the safety of trains. Safe, reliable and punctual operation. That is, how to ensure the safety of the catenary line in the process of thawing the catenary line is a basis for equipment implementation. At present, ...

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Problems solved by technology

Because the load of the DC deicing system is a transmission line, the load transmits high voltage or even ultra-high voltage power when the ice is not melting, and it is impossible to install a reliable temperature detection feedback device; when working on the line melting, due to the relatively long span of the line, it is impossible Monitor the ice-melting state of the entire line, and cannot protect the line by effectively detecting the load temperature

The catenary line cannot be directly installed with a fixed contact temperature measuring device, which also puts forward a new requirement for temperature monitoring during the ice melting process of the catenary line, which is not effective in the existing catenary DC ice melting system temperature monitoring system, which also increases the risk of catenary line damage

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