Rapid leakage detecting method suitable for extra-high voltage converter transformers

Abstract

Provided is a rapid leakage detecting method suitable for extra-high voltage converter transformers. According to the method, a rapid leakage detecting device is used for detection and comprises a converter transformer used as equipment to be detected, an air compressor used as inflating equipment, a helium gas bottle, a helium mass spectrometer leak detector and a suction gun. A compressed air tank is arranged between the converter transformer and the air compressor, the helium gas bottle is connected with the converter transformer through a pipeline, and the suction gun is connected with the helium mass spectrometer leak detector through a pipeline. The method achieves rapid detection of leakage points of the extra-high voltage converter and is especially suitable for the extra-high voltage converter transformers and also suitable for other large-volume oil-filled transformers.

Description

Technical field [0001] The invention belongs to the application field of high-precision leak detection technology for high-voltage electrical equipment. Background technique [0002] The current leak detection technology is constantly developing, the leak detection equipment is constantly improving, and the leak detection method is continuously making breakthroughs and innovations. [0003] Helium mass spectrometer leak detector is one of the most advanced leak detection equipment in the world. It has a wide range of applications, especially in the aerospace and power fields that represent advanced technology, such as small parts of aerospace equipment and small chambers. Leakage, leakage detection of high-voltage transformers and high-voltage switches of power equipment, but there is a gap in the application of leakage detection in power transformers, especially UHV converter transformers. [0004] For a long time, the leak detection work of high-voltage power transformers has alwa...

AI Technical Summary

Problems solved by technology

[0003] Helium mass spectrometer leak detector is one of the most advanced leak detection equipment in the world at present. leakage, high-voltage transformers of power equipment, high-voltage switch leak detection, etc., but there is a gap in the application of power transformers, especially UHV converter transformers.

[0004] For a long time, the leak detection work of high-voltage power transformers has been staying above the level of vacuuming and observing the voltage change. This method is limited by the suction capacity of the vacuum pump, the wall and volume of the transformer shell, etc., resulting in long vacuuming time and low vacuum. Low, difficult to observe, leaks cannot be accurately detected and located, high missed detection rate, high maintenance and rework rate, high installation and maintenance costs, difficult to restore the backup period in time, etc., seriously affecting the safe and stable operation of the power system

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