Atlas analysis method used for partial discharge online monitoring data

Abstract

The invention discloses an atlas analysis method used for partial discharge online monitoring data. Thus, the present technical problem of high costs for the measuring and signal processing of partialdischarge can be solved. The method includes the following steps: S100, obtaining two columns of data which are discharge phases and corresponding discharge capacities by reading the experimental waveform of an oscilloscope; S200, sequencing the discharge phases from small to large, so does the corresponding discharge capacities; S300, equally dividing a cycle which is 360 degrees into N phase sections, N being an integer greater than 100; S400, starting from the first phase section, finishing until the Nth sections, searching data in each phase section, and checking whether the discharge phase data in the step S200 is left; and S500, outputting the largest discharge capacity, average discharge capacity and the number of discharges in each section. The method is low in cost, and strong inpracticability and operability; and the method can analyze partial discharge atlases and be used for the atlas analysis of general high voltage test results.

Description

technical field [0001] The invention relates to the technical field of graph analysis of voltage signals, in particular to a graph analysis method for partial discharge on-line monitoring data. Background technique [0002] When using the pulse current method to measure partial discharge, the two channels of the oscilloscope can be used to measure the partial discharge signal and the voltage signal respectively. The partial discharge signal can be the voltage measured by the detection impedance method or the current measured by the Rogowski coil. The voltage signal It refers to the low-voltage signal that the high-voltage signal of the test AC power supply is converted into by a capacitive voltage divider. [0003] Save the waveform after calibration, read and process it to get the discharge phase and the corresponding discharge volume, and the data extraction algorithm can be used to process these data to obtain the specific values ​​of the maximum discharge volume, average...

AI Technical Summary

Problems solved by technology

[0004] At present, the measurement and signal processing of partial discharge are generally realized by partial discharge instrument, but the price of partial discharge instrument is high, and the experimental cost is high, which is not conducive to small-scale experiments in the laboratory.

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