Optical fiber temperature measurement system for monitoring temperature of transformer substation

Abstract

The invention discloses an optical fiber temperature measurement system for monitoring the temperature of a transformer substation, and relates to the technical field of optical fiber temperature measurement. The device comprises an optical signal transmitting module for generating narrow-pulse-width optical pulse signals, an optical fiber for transmitting optical signals, an optical wavelength division multiplexing module for generating Raman scattering light, and an optical signal receiving module for receiving the optical signals and converting the optical signals into electric signals, the data acquisition module is used for receiving the electric signals; the data processing module is used for processing the electric signals received by the data acquisition module; and the information processing module is provided with a multi-stage constant temperature alarm value and a temperature rise rate alarm. According to the invention, by adopting the distributed optical fiber temperature test based on the Raman scattering temperature measurement technology, the temperature abnormal point can be accurately and timely positioned on one optical fiber; meanwhile, the system is provided with multi-stage constant temperature alarm values and temperature rise rate alarms, a temperature distribution curve is displayed in real time, early warning is achieved before a fire occurs, and the fire occurrence probability of the transformer substation is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of optical fiber temperature measurement, in particular to an optical fiber temperature measurement system used for temperature monitoring of substations. Background technique [0002] A substation is a power facility in a power system that transforms voltage, receives and distributes power, controls the flow of power, and adjusts voltage. As a very important energy conversion base, substations will inevitably lead to large-scale power outages in the event of fires and other electrical accidents, which will have a significant impact and loss on the production of enterprises and people's lives. Therefore, it is very important to ensure the safety and reliability of substations and avoid fires. Among them, equipment overheating is an important hidden danger leading to substation fires. For example, the overheating of the dynamic and static contacts of high-voltage switchgear in substations and other connecti...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an optical fiber temperature measurement system for substation temperature monitoring. By adopting distributed optical fiber temperature measurement based on Raman scattering temperature measurement technology, temperature anomalies can be accurately and timely located on an optical fiber; At the same time, the system is equipped with multi-level constant temperature alarm value and temperature rise rate alarm, which can display the temperature distribution curve in real time and provide early warning before the fire occurs, which solves the problem that the existing temperature measurement system can only passively set a temperature threshold and is prone to misjudgment. And the problem of not being able to accurately locate the location of the accident point

Images