Ultrahigh frequency sensor characteristic verification method based on return loss and terminal equipment

Abstract

The invention is applicable to the technical field of sensor detection, and provides an ultrahigh frequency sensor characteristic verification method based on return loss and terminal equipment. The ultrahigh frequency sensor characteristic verification method based on return loss comprises the following steps: according to a preset number of scanning points in a preset frequency band, measuring S11 or S22 parameters of a target ultrahigh frequency sensor of the gas insulated switchgear to obtain a target return loss curve of the target ultrahigh frequency sensor; obtaining correlation coefficients of the target return loss curve and the reference return loss curve, wherein the reference return loss curve is obtained according to a pre-measured return loss curve of at least one ultrahigh frequency sensor, and the type of the at least one ultrahigh frequency sensor is the same as that of the target ultrahigh frequency sensor; and under the condition that the correlation coefficient is smaller than a preset threshold value, determining the target ultrahigh frequency sensor as an ultrahigh frequency sensor with abnormal characteristics in a preset frequency band. According to the invention, the problem of inaccurate characteristic verification can be solved.

Description

technical field [0001] The invention belongs to the technical field of sensor detection, and in particular relates to a return loss-based UHF sensor characteristic verification method and terminal equipment. Background technique [0002] In recent years, gas insulated switchgear (Gas Insulated Switchgear, GIS) has been widely used in power systems, especially in the fields of high voltage, extra high voltage and ultra high voltage. GIS equipment can be composed of circuit breakers, isolating switches, grounding switches, transformers, lightning arresters, busbars, connectors, and outlet terminals. Sulfur fluoride (SF6) insulating gas. In order to ensure the safe operation of GIS equipment, UHF detection methods are usually used to detect GIS equipment. In UHF detection, UHF sensor is a key device, and its sensitivity and other characteristics directly determine the accuracy of UHF detection. like figure 1 as shown, figure 1 A three-phase GIS device is shown, wherein S1 ...

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