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Transformer oil temperature monitoring apparatus based on fiber grating principle

A fiber grating and transformer oil technology, applied in measuring devices, thermometers with physical/chemical changes, instruments, etc., can solve the problems of high process and installation requirements, poor precision and sensitivity, and affect insulation performance, etc., to achieve corrosion resistance Strong, high precision, fast response effect

Pending Publication Date: 2017-03-15
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can reflect the change of oil temperature to a certain extent, but it is relatively easy to be interfered by the strong magnetic field of the on-site transformer, and its accuracy and sensitivity are poor. Relatively high requirements for process and installation

Method used

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  • Transformer oil temperature monitoring apparatus based on fiber grating principle
  • Transformer oil temperature monitoring apparatus based on fiber grating principle
  • Transformer oil temperature monitoring apparatus based on fiber grating principle

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Embodiment Construction

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0014] see Figure 1-4 , an embodiment provided by the present invention: a transformer oil temperature monitoring device based on the fiber grating principle, including a chassis 1, a switching power supply 2, a mounting plate 3, a grating module 4, a demodulator 5, and a temperature probe 6, the The outer side of the mounting plate 3 is connected to the inner side of the cabinet 1, one end of the switching power supply 2 is connected to the surface of the mo...

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Abstract

The invention discloses a transformer oil temperature monitoring apparatus based on a fiber grating principle. The apparatus comprises a cabinet, a switch power supply, an installation plate, a grating module, a demodulation instrument and four temperature probe, wherein the side surface of the outer side of the installation plate is connected with the side surface of the inner side of the cabinet, one end of the switch power supply is connected with the surface of the installation plate, the grating module is provided with a fixation hole, the grating module is fixedly connected with the installation plate through the fixation hole, the demodulation instrument comprises a demodulator and a main control board, each temperature probe is internally provided with two fiber grating sensors, the other sides of the temperature probes are connected with eight ST ports of the grating module, the eight ST ports of the grating module are disposed at the bottom, wires of a power supply and a serial port of the grating module are disposed on the top, the main control board and the switch power supply are connected, the master control board is provided with a display screen, and the display screen is corresponding to a cabinet door window. The transformer oil temperature monitoring apparatus is not affected by electromagnetic interference, and is high in precision, fast in reaction, high in corrosion resistance and long in life.

Description

technical field [0001] The invention relates to a transformer oil temperature monitoring device based on the fiber grating principle. Background technique [0002] Transformer oil temperature is one of the important parameters of transformer operation. If the oil temperature is too high during the operation of the transformer, it will not only affect the service life of the transformer, but also pose a threat to the safe operation of the transformer. Therefore, online monitoring of transformer oil temperature and real-time understanding of changes in transformer oil temperature are very necessary to ensure normal power supply. However, due to the complex structure of the transformer and the large electromagnetic interference on site, it is more difficult to monitor the oil temperature of the transformer online. For a long time, the traditional transformer oil temperature monitoring front-end uses mechanical platinum resistors as sensors, and measures the resistance value of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32G01K11/3206
CPCG01K11/32
Inventor 程涛张志赵越王恒周建武张超许亚伟
Owner STATE GRID CORP OF CHINA
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