A Discharge Phenomenon Observation Method in Gas Discharge Test

Abstract

The invention relates to a discharge phenomenon observation method in a gas discharge test, using single or multiple single-lens reflex viewfinder cameras as the main observation tool, with the help of adjustable neutral density mirrors, wireless remote control devices and tripod pairs during the day or at night Discharge paths and arc attachment points are accurately recorded from different angles during high-voltage discharge tests carried out in indoor test chambers or outdoor test fields. The method is to decide whether to install a neutral density mirror in front of the camera lens according to the light intensity of the test site, and reasonably set the relevant parameters of the camera and adjust the neutral density mirror according to the test conditions, connect the wireless signal receiver to the camera, and use the wireless signal to transmit The device controls the camera to capture the discharge phenomenon. This observation method can accurately record the discharge path and arc attachment point in the gas discharge test under various conditions. This method is economical and reliable, and can solve the problem of unobservable or inaccurate relying on the naked eye and other observation methods in the current high-voltage test.

Description

technical field [0001] The invention relates to a method for observing discharge phenomena in gas discharge tests, in particular to a method for observing discharge phenomena in gas discharge tests under various complex test conditions. Background technique [0002] Lightning strike is one of the main reasons for the failure of transmission lines and power equipment. Therefore, long air gap discharges are often used in laboratories to simulate natural lightning to study the lightning shielding performance of transmission lines; in external insulation tests, discharge tests are also necessary. During the discharge test, the observation of the arc attachment point (the object hit by the simulated lightning) and the discharge path is the most important part. In the simulated lightning strike test, the discharge time is on the order of microseconds, and it is very easy for observers to miss the moment of discharge or make mistakes in judgment. Therefore, relying on naked eye obs...

AI Technical Summary

Problems solved by technology

During the discharge test, the observation of the arc attachment point (the object hit by the simulated lightning) and the discharge path is the most important part. In the simulated lightning strike test, the discharge time is on the order of microseconds, and it is very easy for observers to miss the moment of discharge or make mistakes in judgment. Therefore, relying on naked eye observation will bring great errors to the test results; very few qualified scholars use high-speed cameras and other auxiliary equipment. Optoelectronic equipment is used to observe the detailed development process of the leader (streamer) in the long air gap discharge, but this kind of equipment is extremely expensive. For general discharge tests, it is not necessary to observe the detailed development process of the leader (streamer) during the discharge process. Just pay attention to the arc attachment point (the object hit by the simulated lightning) and the discharge path, and this kind of equipment is limited by the test conditions, the debugging process in the test preparation stage is cumbersome, it is difficult to get started, the practical range is small, and the use effect in the strong light environment is extremely ineffective ideal

Therefore, there are still great deficiencies and blind spots in the existing observation methods

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