Hydrophobic dual-sealing photoelectric electric-field sensor applicable to high-humidity environment

Abstract

The invention relates to a hydrophobic dual-sealing photoelectric electric-field sensor applicable to high-humidity environment and belongs to the technical field of electric-field measurement. The hydrophobic dual-sealing photoelectric electric-field sensor is of a symmetric structure and is characterized in that optical-fiber sheath bonding layers are respectively arranged between a pipe shell cover and a pipe shell body, between sleeves and the pipe shell body as well as between optical-fiber sheaths and the sleeves. A chip is arranged in the pipe shell body, the optical waveguide is relatively fixed with the chip, one end of each of the optical fibers is respectively connected with two side end parts of the optical waveguide, and the other ends of the two optical fibers extend out of optical-fiber sheaths at the two sides of the pipe shell body respectively. A hydrophobic coating is coated on the surfaces of the pipe shell body and the sleeve. The hydrophobic dual-sealing photoelectric electric-field sensor has the advantages that the pipe shell is treated by adopting double sealing and hydrophobicity, so that normal measurement can also be carried out under the environment with the relative humidity being smaller than 90%, no distortion is caused to the waveform of a measured electric field, and further the accuracy of a measurement result is greatly improved. The hydrophobic dual-sealing photoelectric electric-field sensor is especially applicable to regions with the full-year average relative humidity being greater than 60% in China.

Description

technical field [0001] The invention relates to a water-repellent double-sealed photoelectric electric field sensor suitable for high-humidity environment, and belongs to the technical field of electric field measurement. Background technique [0002] With the construction of UHV projects, photoelectric sensors have the advantages of strong electromagnetic compatibility and little interference to the source field, and have gradually become an ideal tool for the measurement of strong electric fields. playing an increasingly important role. Generally, the photoelectric electric field sensor is packaged with a tube casing to protect the internal chip of the sensor from being affected by the complex environment of the engineering site. [0003] The photoelectric electric field sensor is different from the general electronic equipment's requirements for the shell. It not only requires high impact resistance of the shell, but also requires the shell medium to be non-conductive, s...

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Problems solved by technology

For the study of long air gap discharge, high humidity will make the sensor respond to the falling edge too fast, and the change of the space electric field cannot be displayed through the electric field, which will not be conducive to the research on the generation and development of the streamer and the leader, and finally hinder the development of the space discharge research work

For the research on insulator fault detection, high humidity will cause the power frequency response amplitude of the sensor to attenuate and produce phase shift, resulting in a decrease in the sensitivity of insulator fault detection, resulting in the omission of some small faults, which may cause flashover and eventually lead to grid failure. collapse

For the electromagnetic environment research, the temperature change and high humidity of the project site will affect the accuracy of the sensor measurement value, and cannot make an accurate assessment of the electromagnetic environment

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