Field inspection method of oil gas monitoring device based on comparison and analysis

Abstract

The invention discloses a field inspection method of an oil gas monitoring device based on comparison and analysis, and relates to the fields of power equipment state monitoring and fault diagnosis study and application. The existing industry lacks a method for detecting the technical indexes of measuring accuracy (repeatability and error) and the like of the oil gas monitoring device at field. The method comprises the following steps of connecting a detection device, treating transformer oil, standing the transformer oil, balancing the volume change of a transformer, utilizing a standard gas automatic metering instrument to obtain set standard mixed gas, injecting into a portable inspection instrument, magnetically stirring until the gas is fully dissolved, calculating the original concentration of the dissolved gas in the oil, and calculating the concentration of the dissolved gas in one special component of oil. The method has the advantages that the key problems of site, communication and time conditions in the traditional application mode are overcome; the maneuverability of quality control response of power equipment is improved; the comprehensive optimum effects of risk, efficiency and cost in power production are realized.

Description

Technical field [0001] The invention relates to the research and application fields of state monitoring and fault diagnosis of power equipment, in particular to an on-site inspection method of a gas in oil monitoring device based on comparison analysis. Background technique [0002] Gas in oil is one of the important characteristic parameters reflecting the insulation performance of transformers and high-voltage reactor equipment, and is a symptom and manifestation of insulation deterioration of transformers and high-voltage reactor equipment. Therefore, monitoring the gas in the oil of the transformer and the high-voltage reactor electrical equipment can find the early internal insulation defects, and through timely fault diagnosis and state evaluation, specific treatment measures can be taken to avoid its continued development and deterioration. [0003] With the increasing in-depth research and application of equipment condition monitoring and evaluation technology by power comp...

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Problems solved by technology

[0005] The invention provides an on-site inspection method for a gas-in-oil monitoring device based on comparative analysis, which is used to solve the lack of methods in the industry that can inspect technical indicators such as measurement accuracy (repeatability, error) of the gas-in-oil monitoring device on the spot, and cannot be found in time The performance problems of monitoring devices in engineering applications affect the accurate monitoring and judgment of the insulation status of transformers and high-voltage reactors, and even lead to technical problems in power safety production incidents

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