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Virtual instrument technique based gas insulation combined electric appliances online detecting method

A gas-insulated combination and virtual instrument technology, which is applied in the direction of instruments, circuits, and measuring electronics, can solve problems such as difficult maintenance personnel reference, easy to be affected by interference, and inability to evaluate the development trend of partial discharge, so as to save manpower and material resources. , superior performance, and shorten the development cycle

Inactive Publication Date: 2007-03-07
CHONGQING UNIV
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Problems solved by technology

However, since the frequency of corona discharge in the air is usually 100-200MHz, the low frequency band of the sensor is too low to overcome the strong corona interference at the detection site, and is easily affected by interference
Its diagnostic unit uses wavelet packet and fractal dimension to quantitatively analyze the local characteristics of the partial discharge signal, and realizes the quantitative analysis of the waveform characteristics of the partial discharge signal. The number has a great influence, resulting in inaccurate calculations
[0004] Another example is the locating method disclosed by the applicant with the application number 200610054229.9 of "on-line detection and positioning device and locating method for partial discharge of gas-insulated combined electrical appliances". It is difficult to make an accurate judgment on the type of partial discharge, and it is impossible to evaluate the development trend of partial discharge, so it is difficult to provide more references for maintenance personnel

Method used

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  • Virtual instrument technique based gas insulation combined electric appliances online detecting method
  • Virtual instrument technique based gas insulation combined electric appliances online detecting method
  • Virtual instrument technique based gas insulation combined electric appliances online detecting method

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Embodiment Construction

[0042] The present invention will be further described below in combination with specific embodiments.

[0043] As shown in Figures 1 to 5, an online monitoring method for gas-insulated combined electrical appliances based on virtual instrument technology uses a computer and the applicant's application number 200610054229.9 "on-line detection and positioning device and positioning method for partial discharge of gas-insulated combined electrical appliances" " device, through the program to carry out online monitoring of GIS partial discharge, the specific method steps are as follows:

[0044] (1) Parameter setting

[0045] First enter the parameter setting: mainly set sampling parameters such as sampling frequency, sampling length and timing length, trigger threshold setting, alarm threshold setting, monitoring mode (including manual and automatic) setting, filter parameter setting and other software initial settings.

[0046] (2) System function selection

[0047] After the...

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Abstract

This invention relates to gas insulation combination apparatus online monitor method based on virtual device in the device insulation monitor technique field. This invention uses the computer and gas insulation combination apparatus local online test and positioning device and through virtual device technique and comprises parameter setting, online monitor, data analysis, history research four units module computer program and all-day GIS local discharging for online monitoring with multiple data analysis, warning and fault finding and requiring function.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment insulation monitoring, and relates to an ultra-high-frequency online monitoring method for partial discharge of a gas-insulated combined electrical appliance, in particular to an ultra-high-frequency online monitoring method for partial discharge of a gas-insulated combined electrical appliance based on virtual instrument technology. Background technique [0002] During the operation of gas-insulated combined electrical equipment (GIS) in electrical equipment, due to the existence of various defects inside GIS, GIS will cause various forms of partial discharge, such as corona, impurity discharge, etc. Partial discharge inside GIS will develop into insulation breakdown fault for a period of time, causing power outage, affecting the safe operation of the power system and causing huge losses to the national economy. The partial discharge of early insulation faults in GIS has the characte...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R31/12G01R31/02H01H9/50H01H33/26
Inventor 张晓星唐炬唐世宇杜林莫文强李剑刘明军许中荣
Owner CHONGQING UNIV
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