Evaluation method and calibration device for a partial discharge detection device

Abstract

An evaluation method and calibration device for a partial discharge detection device, which uses a controllable pulse generator to generate a standard pulse signal in line with the power industry; according to the partial discharge detection device calibration method in IEC and GB / T related specifications, the partial discharge Static calibration of the detection device; record the index of each static calibration, and compare it with the index of the relevant standard; evaluate the static index of the partial discharge detection device according to the comparison result; use a controllable pulse generator to generate a ps-level pulse signal and inject it into the to the partial discharge detection device; collect the output pulse waveform from the partial discharge detection device; perform spectrum analysis on the ps-level pulse signal and the collected pulse signal; evaluate the dynamic index of the partial discharge detection device, if it meets the requirements of the detection device without distortion If the transmission conditions are met, the dynamic index of the partial discharge detection device is qualified, otherwise it is unqualified. The invention is simple to implement and can reduce the calibration cost of the partial discharge detection device.

Description

technical field [0001] The invention relates to the field of partial discharge diagnosis of power equipment, in particular to an evaluation method and a calibration device for a partial discharge detection device. Background technique [0002] Partial discharge detection, as an important means of insulation diagnosis of power equipment, can not only reflect the early failure of equipment more sensitively, provide a basis for effective preventive measures, but also reflect the insulation status of high-voltage power equipment. [0003] At present, there are many partial discharge instruments at home and abroad, but their performance and reliability often cannot meet the requirements of partial discharge testing. At the same time, although there are many methods for detecting partial discharge instruments at present, including pulse current method, ultrasonic wave, ultra-high frequency method, etc., each method has certain advantages and disadvantages. Although the relevant n...

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Problems solved by technology

Although the relevant national power industry has made relevant specifications for the calibration of partial discharge detection devices, the relevant specifications are not complete and can accurately calibrate the indicators of partial discharge detection devices

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