Corona detecting method and system for insulator remote surface on optical amplifier

A technology of optical amplifiers and detection methods, applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve problems such as interference, inconvenient operation, and sensitivity to insulator damage

Inactive Publication Date: 2006-11-08
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

The common problems of the traditional contact detection methods are: serious interference problem, inconvenient operation, and great influence of human factors. Many methods are only suitable for porcelain insulators or glass insulators; the non-contact method is currently in the trial stage, mainly through infrared Monitoring Insulator Heating and Observing UV Corona Using UV Imaging
Among them, infrared monitoring can only be limited to the late stage of insulator operation, and is generally only sensitive to insulator damage,

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  • Corona detecting method and system for insulator remote surface on optical amplifier
  • Corona detecting method and system for insulator remote surface on optical amplifier
  • Corona detecting method and system for insulator remote surface on optical amplifier

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Embodiment Construction

[0022] The working principle of the present invention will be further described below in conjunction with the drawings and embodiments.

[0023] figure 1 , 2 The parts in 3 are: 1-insulator under test, 2-optical receiving positioning part, 2.1-optical receiving head, 2.2-optical path separation device, 2.3-imaging positioning screening device, 2.4-visualization device, 3-optical amplifier, 4-amplification and acquisition part, 4.1-preamplifier, 4.2-filtering part, 4.3-data acquisition part, 5-terminal data processing analysis and display part.

[0024] When the high-voltage equipment is ionized and discharged, according to the difference in electric field strength (or high voltage difference), if the electric field strength exceeds a certain level, corona will be generated and then flashover or arc will be caused. During ionization, electrons in the air continuously gain and release energy. When electrons release energy (that is, discharge), light waves and sound waves are ...

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Abstract

This invention relates to a method for testing insulator remote surface corona based on an optical amplifier including: a, aligning an optical location system to a discharge position of a being tested compound insulator to get an ultraviolet signal generated by weak discharging along the surface of the insulator to be amplified by the optical amplifier and converted to an electric signal to be collected, stored and analyzed by a computer with a data collection method to decide the corona position and acute state of its discharge.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment fault diagnosis, in particular to an optical amplifier-based insulator remote surface corona detection method and a composite insulator remote surface corona detection system for realizing the method. Background technique [0002] Insulators are one of the most numerous and most important components in the external insulation of power systems. They are an important part of overhead transmission lines and play a very important role in the external insulation of power system transmission and transformation. Composite insulators have broken the dominance of ceramic and glass insulators due to a series of advantages such as light weight, high strength, unbreakable, high pollution flashover voltage, no need for zero value detection, easy manufacturing, transportation, installation and maintenance. It has been widely used. According to statistics, the number of composite insulators used in ...

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Application Information

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IPC IPC(8): G01R31/00
Inventor 王黎明王灿林王国利贾志东王柯廖永力关志成
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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