Method for evaluating online synchronous comparing on accuracy of online monitoring device for dissolved gas in transformer oil

Abstract

The invention relates to a method for evaluating online synchronous comparing on accuracy of online monitoring device for dissolved gas in transformer oil. The method comprises the following steps of using a photoacoustic spectrometry online monitoring device which is qualified in calibration as a reference instrument; respectively connecting a to-be-calibrated instrument and the reference instrument with a transformer simulation oil distribution device through different parallel ports; enabling the transformer simulation oil distribution device to clean by self, and adding the transformer oil; connecting the transformer simulation oil distribution device with a standard gas cylinder group to prepare an oil sample; enabling the to-be-calibrated instrument and the reference instrument to simultaneously detect the oil sample of the transformer simulation oil distribution device; enabling a computer to process data, and verify the accuracy of detection data of the to-be-calibrated instrument. The method has the advantages that the problem of difficulty in comparison of the online monitoring device for the dissolved gas in the transport oil in the running process is solved, and the accuracy of the online monitoring device of the transformer oil can be synchronously compared on line.

Description

technical field [0001] The invention belongs to the technical field of electric power, and in particular relates to an evaluation method for online synchronous comparison accuracy of an online monitoring device for dissolved gas in transformer oil. Background technique [0002] With the rapid development of my country's power industry, transformers with a voltage level of 220kV and above are equipped with transformer oil online monitoring devices. Dissolved gas monitoring device in oil is recognized as one of the most effective methods to prevent the failure of oil-filled electrical equipment, which can be divided into offline and online testing. How to ensure the detection accuracy of the dissolved gas monitoring device in transformer oil is particularly important. The traditional method is to use regular chromatographic off-line comparisons to solve the detection accuracy of the online monitoring device. Although off-line gas chromatography has the advantages of good sele...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the patent of the present invention is to propose a method for evaluating the accuracy of online synchronous comparison of an online monitoring device for dissolved gas in transformer oil. The provided oil samples are tested, which solves the problem of inaccurate online monitoring data of dissolved gas in transformer oil, and improves the reliability of the detection data when the online monitoring device monitors the health status of the transformer in real time

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