Electric tree channel partial discharge analyzing system based on LabVIEW

Abstract

The invention discloses an electric tree channel partial discharge analyzing system based on LabVIEW. The system comprises a hardware part and a software part. The hardware part comprises a power supply, a server, a Rogowski coil, a data collecting card and an oscilloscope and is used for measuring, collecting and displaying a partial discharge signal. The software part is developed on the basis of a LabVIEW platform, performs de-noising and threshold analysis on the measured and collected partial discharge signal generated during electric tree growth, displays a partial discharge signal waveform under a time domain, displays a partial discharge signal waveform under a frequency domain through a conversion module, and builds two-dimensional discharge spectrum by extracting discharge phase and discharge frequency. The electric tree channel partial discharge analyzing system has the advantages that the partial discharge signal is collected and processed by utilizing the LabVIEW technology and the Rogowski coil so as to analyze the local discharge condition in a testing sample during the electric tree growth, the aging condition of a to-be-tested insulating material is further judged, and the system is high in reliability, capable of achieving real-time monitoring and 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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