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

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 ...

AI Technical Summary

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, and is also susceptible to environmental temperature changes

The ultraviolet imaging technology has only been developed in recent years. It is an imaging technology that visually displays the discharge situation in the form of video images and can effectively observe corona discharge. However, the measurement accuracy of this technology is more susceptible to environmental interference.

At present, for the quality inspection of composite insulators, there is still a lack of recognized and effective methods that are easy to implement

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