Fiber bragg grating temperature sensor based GIS (Geographic Information System) equipment contact terminal temperature monitoring system

A technology of temperature sensor and optical fiber grating, applied in the field of GIS equipment contact temperature online monitoring system, achieves the effects of small size, online real-time monitoring of temperature, and improvement of temperature measurement accuracy and sensitivity

Inactive Publication Date: 2014-10-29
STATE GRID CORP OF CHINA +2
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Problems solved by technology

The invention indirectly obtains the contact temperature by measuring the temperature

Method used

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  • Fiber bragg grating temperature sensor based GIS (Geographic Information System) equipment contact terminal temperature monitoring system
  • Fiber bragg grating temperature sensor based GIS (Geographic Information System) equipment contact terminal temperature monitoring system
  • Fiber bragg grating temperature sensor based GIS (Geographic Information System) equipment contact terminal temperature monitoring system

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[0023] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0024] figure 1 It is a schematic diagram of the principle of the present invention. The principle of the invention is to indirectly obtain the temperature of the conductor contact by measuring the housing temperature and the ambient temperature, thereby realizing online monitoring of the temperature of the contact. In order to make the calculation result of the neural network algorithm accurate and effective, before the present invention is put into use, it is necessary to conduct a large number of tests for the specific GIS structure size and accumulate enough sample data. Three temperatur...

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Abstract

The invention relates to a fiber bragg grating temperature sensor based GIS (Geographic Information System) equipment contact terminal temperature online monitoring system. The fiber bragg grating temperature sensor based GIS equipment contact terminal temperature monitoring system comprises a fiber bragg grating temperature sensor, a fiber bragg grating interrogator and a computer. The high accuracy fiber bragg grating temperature sensor respectively measures the GIS outer casing temperature, the contact terminal temperature and the environmental temperature; the interrogator receives and demodulates wave length signals reflected by the temperature sensor; the computer which is used for displaying temperature signals obtained by the interrogator can monitor the temperature change in real time. The fiber bragg grating temperature sensor based GIS equipment contact terminal temperature monitoring system has the advantages of being high in accuracy due to the facts that an appropriate algorithm is adopted and the contact terminal temperature is indirectly obtained through the outer casing temperature and the environmental temperature; enabling the GIS equipment to be reliably operated due to the fact that the fiber bragg grating temperature sensing technology is applied to the GIS equipment contact terminal temperature online monitoring; being strong in disturbance resisting capability and good in insulating performance, allowing fixed-point measurement, achieving real-time online measurement of the temperature and having wide application prospects.

Description

technical field [0001] The invention relates to an on-line monitoring system for contact temperature of GIS equipment based on an optical fiber grating temperature sensor, which indirectly obtains the temperature of the contact part through the shell temperature and the ambient temperature, and has high precision. Background technique [0002] Compared with conventional electrical appliances, gas insulated switchgear (GIS) has the advantages of small footprint, high reliability, less maintenance and long service life in terms of structural performance. It has been widely used in power transmission and distribution systems at home and abroad. GIS equipment has a low failure rate in theory, but once a failure occurs, the consequences are more serious than ordinary electrical equipment. Therefore, if the temperature of the GIS bus can be monitored online, the temperature of the bus and its development trend can be monitored in real time, and the overheating warning and maintena...

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Application Information

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IPC IPC(8): G01K11/32G01K11/3206
Inventor 吴昊行晋源周志成刘洋陶加贵贾勇勇
Owner STATE GRID CORP OF CHINA
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