Method and device for configuring noise threshold and noise bandwidth

Abstract

The invention discloses a method and device for configuring a noise threshold and a noise bandwidth. The method comprises the steps that a recording signal is obtained by recording noise of a work environment of a monitoring device; according to the recording signal, the activity period intensity and the time-frequency characteristic distribution interval are determined; according to the activityperiod intensity and the time-frequency characteristic distribution interval, the noise threshold intensity change characteristics and the time-frequency distribution change characteristics are built;according to the noise threshold intensity change characteristics and the time-frequency distribution change characteristics, configuration parameters of the monitoring device are determined; according to the configuration parameters, the noise threshold and the noise bandwidth of the monitoring device are configured. By means of the method, the technical problems are solved that when the noise threshold and the noise bandwidth are manually set or detected through noise filtering, the requirements for the detection effectiveness in different noise environments and under different running conditions are difficult to met.

Description

technical field [0001] The present invention relates to the electrical field, in particular to a method and device for configuring noise thresholds and bandwidths. Background technique [0002] Partial discharge is a manifestation of the deterioration of the insulation performance of power equipment, and it is also the cause of further deterioration of the insulation performance. Monitoring partial discharge signals is an important means to discover equipment insulation defects in time and prevent insulation breakdown failures. When partial discharge occurs in electrical equipment, electromagnetic waves tend to gather at the grounding metal parts adjacent to the grounding point first, forming a grounding current that propagates on the metal surface of the equipment, and passes through insulating parts, gasket connections, cable insulation terminals and other shielding discontinuities. The high-frequency signal of the discharge will be transmitted to the shielding shell of t...

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a method and device for configuring noise thresholds and bandwidths to at least solve the problem of being difficult to adapt to different noise environments and different operating conditions due to manual setting or noise filtering means for detecting noise thresholds and bandwidths. Technical aspects of the requirements for testing validity

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