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Detection method of Geographic Information System (GIS) local discharging ultrahigh-frequency online monitoring device

A partial discharge and monitoring device technology, applied in the direction of testing dielectric strength, etc., can solve the problems of difficult to quantitatively simulate partial discharge ultra-high frequency signals, the complexity of diverse ultra-high frequency electromagnetic wave signals and broadband frequency, etc., and achieve high practical application value. , The effect of short detection period and small equipment footprint

Inactive Publication Date: 2013-04-03
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that due to the diversity and difficulty of GIS partial discharge, the complexity and wide frequency band of ultra-high frequency electromagnetic wave signals, it is difficult to quantitatively simulate partial discharge ultra-high frequency signals, so it is necessary to provide a GIS The detection method of the partial discharge ultra-high frequency online monitoring device can effectively detect the partial discharge ultra-high frequency online monitoring device of GIS

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  • Detection method of Geographic Information System (GIS) local discharging ultrahigh-frequency online monitoring device
  • Detection method of Geographic Information System (GIS) local discharging ultrahigh-frequency online monitoring device
  • Detection method of Geographic Information System (GIS) local discharging ultrahigh-frequency online monitoring device

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] figure 1 It is a schematic diagram of the detection method of the GIS partial discharge ultra-high frequency online monitoring device.

[0017] Such as figure 1 As shown, the arbitrary waveform generator 1 outputs a simulated partial discharge UHF signal, the oscilloscope 2 is used to verify the accuracy of the output of the arbitrary waveform generator 1 , and the analog signal is transmitted through the UHF antenna 3 . The ultra-high frequency sensor 4 and the partial discharge online monitoring intelligent component 5 constitute a GIS partial discharge ultra-high frequency online monitoring device. The UHF sensor 4 receives the analog signal emitted by the UHF antenna 3, and finally the partial discharge online monitoring intelligent component 5 analyzes the signal. By comparing the analog signal of the arbitrary waveform gen...

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Abstract

The invention discloses a detection method of a Geographic Information System (GIS) local discharging ultrahigh-frequency online monitoring device. The method is characterized in that an arbitrary waveform generator is used for simulating GIS local discharging ultrahigh-frequency signals, simulated local discharging signals are emitted to the local discharging ultrahigh-frequency online monitoring device through an ultrahigh-frequency antenna, simulated signals of the arbitrary waveform generator are compared with response output of the local discharging ultrahigh-frequency online monitoring device, and the detection of the GIS local discharging ultrahigh-frequency online monitoring device is completed. By the aid of the method, the GIS local discharging ultrahigh-frequency online monitoring device is detected effectively.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment insulation partial discharge detection, and is especially suitable for the detection of a GIS partial discharge ultra-high frequency on-line monitoring device. Background technique [0002] Insulation defect and insulation failure of gas insulated switchgear (GIS) are the biggest threat to its safe and stable operation. The electric field strength inside GIS is tens or even hundreds of kV / cm. When partial discharge occurs, the instantaneous The change rate of voltage with time is very large. A notable feature of partial discharge is that the current pulse rise time and duration are only nanoseconds, and the equivalent frequency is in the range of UHF (Ultra High Frequency) (300MHz~3GHz). And it will excite electromagnetic waves. Partial discharge detection helps to find insulation defects in GIS in all aspects of manufacture, installation, operation and maintenance. [0003] GIS par...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 费益军李刚刘伟查显光杨景刚胡成博王影花
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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