Method for measuring temperature of high-voltage/extra-high-voltage cable connector by using fiber

Abstract

Provided is a method for measuring the temperature of a high-voltage / extra-high-voltage cable connector by using a fiber. The method is characterized by comprising an external temperature-measuring fiber 1, an internal temperature-measuring fiber 5, a temperature-measuring probe fixing clamp 9, and a temperature demodulator 13. The external temperature-measuring fiber 1 comprises a ST fiber connector 2, an external fiber 3, and an external fiber connector 4 which are successively connected. The internal temperature-measuring fiber 5 comprises an adapter embedded member 6, an internal fiber 7, and a temperature-measuring probe 8 which are successively connected. The temperature-measuring probe fixing clamp 9 fixes the temperature-measuring probe 8 to an end cap embedded member 11 by means of a screw 10. The internal temperature-measuring fiber 5 is connected with the external fiber connector 4 via the adapter embedded member 6. The external temperature-measuring fiber 1 is connected with the fiber interface 14 of the temperature demodulator 13 through the ST fiber connector 2. The method online monitors the operating temperature of a cable connector in real time.

Description

technical field [0001] The content of the present invention relates to real-time on-line monitoring of the working temperature of high-voltage and extra-high-voltage cable joints, in particular to a fusion method of optical fibers and insulating materials and a method for measuring the temperature of cable joints with optical fibers. Background technique [0002] In power transmission and distribution systems, high voltage transmission cables are widely used. Such cables are distributed in substations and transmission lines. Due to the influence of processing technology, construction quality, operating conditions and operating environment, the failure rate of cables and cable joints is high. The normal operation of the transmission cable is directly related to the normal operation of the transmission and distribution network. Since the cable joints of transmission and distribution lines are numerous and scattered, it is difficult to manually inspect them. Therefore, online ...

AI Technical Summary

Problems solved by technology

The optical fiber transmission system has high insulation strength, strong anti-electromagnetic interference ability, corrosion resistance, small size and simple structure, and is especially suitable for temperature measurement of high-voltage cable joints. The perfect combination of optical fiber and cable joint insulation sheath not only solves the problem of insulation, but also solves the problem of reliability

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