Device and method for measuring quantized oil level of high-voltage current transformer

Abstract

The invention discloses a device for measuring a quantized oil level of a high-voltage current transformer. The device comprises a tripod, wherein a vernier angle instrument is mounted on a horizontal plane at the top of the tripod; and a laser sighting device is mounted on the vernier angle instrument. The invention further provides a measurement method, comprising the following steps of: firstly, adjusting the tripod so that the vernier angle instrument is ensured to be placed at a horizontal position; secondly, after adjusting and determining a measurement position, accurately aligning an upper limit, a lower limit and a scale of the oil level on a viewing window of the high-pressure current transformer by using the laser sighting device; meanwhile, obtaining a corresponding angle by the measurement of the vernier angle instrument, wherein angles corresponding to an upper limit A point, a lower limit C point and an oil level scale B point of the oil level viewing window are gamma, alpha and beta; and finally, obtaining a ratio numerical value of the entire viewing window relative to the oil level scale through a calculation formula. With the adoption of the measurement device and method provided by the invention, the gap in the method for measuring the quantized oil level of the high-pressure current transformer is filled. The measurement device provided by the invention has the characteristics of convenience in assembling and carrying, simplicity in operation and high accuracy.

Description

technical field [0001] The invention relates to a measuring device for measuring the oil level of a high-voltage current transformer and a corresponding measuring method. Background technique [0002] Due to the advantages of compact structure and strong dynamic and thermal stability, inverted oil-filled current transformers are widely used in power grids with voltage levels of 35kV and above. As an important basis for judging whether the transformer equipment is normal, observing the oil level of the transformer and analyzing the change of the oil level has become an important content for electric workers to regularly inspect the transformer equipment. However, since the oil level observation windows of the inverted current transformers are all located on the top of the transformer, higher than the ground, and there are only a few simple scale lines such as 40°C and -20°C outside the observation windows, it is impossible for inspection personnel to remove the oil level. Th...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a measuring device capable of measuring the oil level of a high-voltage current transformer and a corresponding measuring method. Through the use of the present invention, inspection personnel can measure and calculate the oil level of an inverted current transformer as a The determined percentage solves the problem that the transformer oil level cannot be quantified. By analyzing the previously recorded oil level values ​​and considering factors such as ambient temperature and load conditions, inspection personnel can more accurately determine whether the transformer equipment is operating normally.

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