Three-vibration-sensor-based oil level fault diagnosis apparatus for oil-immersed power transformer

Abstract

The invention discloses a three-vibration-sensor-based oil level fault diagnosis apparatus for an oil-immersed power transformer, so that a problem that the existing oil level indicator fails to monitor an oil surface of an oil-immersed power transformer in operation can be solved. An oil level testing box (5) is arranged on an outer side surface of transformer expansion tank (3); a vibration sensor mounting seat (7) is arranged on the oil level testing box (5) at one side of an oil level measuring dial gauge (17) movably; an electromagnet (21) is arranged on the vibration sensor mounting seat (7); and a coil (16) arranged on the electromagnet (21) is connected with an electric controller (11) electrically. A first spring (19) is arranged on the vibration sensor mounting seat (7); the outer end of the first spring (19) is connected with a first vibration sensor (14) connected with a vibration frequency monitoring instrument (10) by a signal transmission line (9) electrically. According to the invention, testing and diagnosis can be carried out on the premise that the power of the transformer is not interrupted.

Description

technical field [0001] The invention relates to a device and method for diagnosing false oil levels of oil-immersed transformers, which are used for identifying false oil levels in oil-immersed power transformers. Background technique [0002] In the power industry, oil-immersed power transformers are widely used, and oil conservator is an important part of the transformer. When the temperature of the transformer oil rises, the oil in the oil tank will expand accordingly, so that the oil level in the oil conservator will rise accordingly, and at this time, part of the gas in the oil conservator will be discharged through the respirator; when the temperature of the transformer oil drops, the oil in the oil tank will The oil will shrink accordingly, and the oil level in the oil conservator will drop accordingly, and at this time, some gas will be sucked into the oil conservator. The transformer oil conservator discharges or inhales air through the respirator to form a normal ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a false oil level diagnosis device for an oil-immersed power transformer based on three vibration sensors, which solves the technical problem that the existing oil level gauge fails to monitor the oil level of the oil-immersed power transformer in operation

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