XGBoost algorithm-based sulfur hexafluoride electrical equipment micro-water detection method

Abstract

The invention provides a sulfur hexafluoride electrical equipment micro-water detection method based on an XGBoost algorithm. The sulfur hexafluoride electrical equipment micro-water detection method comprises the following steps: 1) dividing the micro-water content of sulfur hexafluoride gas into three gradients, namely a gradient below a safe working area, a gradient between the safe working area and a moisture management line and a gradient exceeding the moisture management line, according to a moisture management standard of sulfur hexafluoride electrical equipment; and starting an artificial climate chamber to adjust the micro-water content of the sulfur hexafluoride gas, and collecting a PRPD map in the development process of epoxy insulation creeping discharge under each micro-water gradient. 2) extracting two types of characteristic values from the collected PRPD atlas, one characteristic value is a PRPD basic statistical parameter for describing discharge point characteristics in the atlas, and the other characteristic value is a PRPD atlas statistical parameter for macroscopically describing an atlas shape. And 3) constructing and training a classifier based on an XGBoost algorithm, and carrying out pattern recognition on the PRPD atlas under different micro-water contents so as to achieve identification of epoxy insulation creeping discharge under different micro-water amounts and realize a detection effect of the micro-water induced sulfur hexafluoride electrical equipment micro-water amount.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of sulfur hexafluoride gas-insulated combined electrical appliances, in particular to a method for detecting micro-water in sulfur hexafluoride electrical equipment based on an XGBoost algorithm. Background technique [0002] Sulfur hexafluoride gas-insulated switchgears (GIS) have gradually become the key equipment widely used in modern large-scale power systems since they were developed and manufactured in the middle of the last century. In recent years, with the development of my country's power industry, the gradual improvement of transmission voltage levels and the improvement of the national economy's requirements for power grid security, GIS equipment has been increasingly used by my country's power grid at various voltage levels. [0003] Climbing insulation is often the weak link of GIS equipment insulation. Usually, the three junctions of various main components will generate par...

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Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention provides a method for detecting micro-water in sulfur hexafluoride electrical equipment based on the XGBoost algorithm, aiming to solve the problem of insufficient detection means for sulfur hexafluoride switchgear in terms of micro-water content exceeding the standard, Provide effective criteria for the diagnosis of sulfur hexafluoride switchgear

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