An external optical fiber temperature controller and temperature measurement method based on grating temperature measurement technology

Abstract

The invention discloses an external optical fiber temperature controller based on grating temperature measurement technology and a temperature measurement method thereof, which includes a temperature measurement unit, a signal transmission unit and a signal demodulation display processing unit, and the temperature measurement unit includes multiple groups of temperature measurement components , which are respectively connected to the top oil cup temperature measurement interface and the winding temperature measurement interface of the transformer to monitor the dynamic data in real time. One end of the signal transmission unit is connected to the temperature measurement unit, and the other end is connected to the signal demodulation display processing unit, and the temperature measurement The wavelength change data monitored by the unit is transmitted to the signal demodulation display processing unit, and the signal demodulation display processing unit processes the collected data, analyzes and calculates the oil surface temperature and winding hot spot temperature, and converts them into digital data display at the same time. In the present invention, the optical fiber probe is placed outside and directly connected with the standard temperature measuring interface to analyze and obtain the specific oil temperature and winding temperature, and at the same time, it is not necessary to modify the traditional transformer, which is convenient for disassembly and replacement.

Description

technical field [0001] The invention relates to the technical field of transformer temperature controllers, in particular to an external optical fiber temperature controller and a temperature measurement method based on grating temperature measurement technology. Background technique [0002] Now the transformer industry generally uses the traditional pressure-type thermostat, which is used to measure the temperature of the transformer oil surface and the simulated temperature of the winding. The transmitter burns out or the output error increases, and the temperature measurement reaction time is long. These defects not only make it impossible to monitor the oil temperature of the transformer in real time, but also may trigger a high oil temperature tripping action, which will affect the safe and stable operation of the transformer. [0003] With the development of science and technology, fiber optic temperature measurement technology has been widely used nowadays. Combining...

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Problems solved by technology

[0004] The fiber optic transformer in the prior art includes a fiber optic connector, an outer fiber, a feeder, an inner fiber, and a fiber optic probe. The fiber optic probe is installed on the fiber optic connector on the inner fiber. This arrangement requires the inner fiber to be wound before the transformer is sealed and oiled. Fixed on the iron core, for the traditional transformer that has been running stably for many years in the substation, if you want to replace the new fiber optic transformer temperature controller, you need to replace it as a whole, or disassemble and reassemble it and reinstall it. The cost and loss are huge, which is impractical

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