Electric tree channel partial discharge analysis system based on LabVIEW

Abstract

The invention discloses an electric tree channel partial discharge analysis system based on LabVIEW, and the system consists of a hardware part and a software part. The hardware part of the system comprises a power supply, a server, a Rogowski coil, a data collection card and an oscilloscope, and carries out the measurement, collection and displaying of a partial discharge signal. The software part is developed based on the LabVIEW platform, carries out the noise reduction and threshold analysis of the measured and collected partial discharge signal generated in a growth process of an electric tree, displays the waveform of the partial discharge signal in a time domain, displays the waveform of the partial discharge signal in the frequency domain through a conversion module, and then constructs a two-dimensional discharge spectrogram through extracting the discharge phase and frequency. The system carries out the collection and processing of the partial discharge signal through the LabVIEW technology and the Rogowski coil, achieves the analysis of the partial discharge caused in the growth process of the electric tree in a test sample, and further judges the aging condition of a tested insulating material. The system is high in reliability, can achieve the real-time monitoring, and is high in practicality.

Description

technical field [0001] The invention relates to a LabVIEW-based partial discharge analysis system for electrical tree branch channels, which belongs to the field of high-voltage insulation. Background technique [0002] In today's era, people's life and work are inseparable from the supply of electricity. Once the operation of the power system fails, it will bring inconvenience to people's life and cause losses to the social economy. Power cables work under high voltage and high current for a long time, coupled with the harsh operating environment, the insulation part will be damaged, threatening the stable operation of the power system. During the operation of the power system, the phenomenon of electrical dendration in cables is the main factor causing insulation faults, and the process of electrical dendration is often accompanied by partial discharge. Therefore, real-time and effective monitoring and analysis of partial discharge in cables can conveniently and effective...

AI Technical Summary

Problems solved by technology

[0002] In today's era, people's life and work are inseparable from the supply of electricity. Once the power system fails, it will bring inconvenience to people's life and cause losses to the social economy.

Power cables work under high voltage and high current for a long time, coupled with the harsh operating environment, the insulation part will be damaged, threatening the stable operation of the power system

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