Method and system for monitoring abnormal temperature increase of power supply traction cable on basis of distributed optical fiber temperature measurement

Abstract

The invention discloses a method and a system for monitoring abnormal temperature increase of a power supply traction cable on the basis of distributed optical fiber temperature measurement. The system comprises a distributed optical fiber detection position indicator, a data center, a user terminal, a monitoring management terminal, a railway existing communication optical cable and a temperature detection optical cable, wherein the distributed optical fiber detection position indicator is arranged inside a communication machine room of a railway route and is connected with the railway existing communication optical cable paved along the railway route and the temperature detection optical cable fixed on a power supply traction cable; the communication machine room is connected with the railway existing communication optical cable paved along a railway; the temperature detection optical cable is fixed on the power supply traction cable in a hoop or physical contact mode in a parallel connection manner; the distributed optical fiber detection position indicator is used for receiving temperature information of the temperature detection optical fiber and used for transmitting the temperature information to a monitoring platform data center through a communication link.

Description

technical field [0001] The invention relates to monitoring abnormal temperature rise of power supply traction cables along railway lines, in particular to a monitoring method for abnormal temperature rise of power supply traction cables based on distributed optical fiber temperature measurement. Background technique [0002] High-speed railway is the main artery of the national economy and a means of mass transportation, as well as the key public infrastructure of the country. Due to cable overload, environmental and other reasons, the abnormal temperature rise of the cable will cause the performance of the insulation medium inside the cable to deteriorate, which may lead to insulation breakdown, fire and other accidents, seriously affecting the safe operation of railway trains. [0003] The existing safety protection methods for power supply traction cables in substations along the railway include risk identification of local overheating based on the relationship between im...

AI Technical Summary

Problems solved by technology

To overcome the difficulty of monitoring the safety status of power supply traction cables in substations along the railway in real time due to the long railway trunk line and the complex surrounding environment of the railway.

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