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gis partial discharge online detection external multi-band UHF sensor

A UHF sensor, partial discharge technology, applied in the direction of testing dielectric strength, etc., can solve the problem of anti-interference ability of PD detection sensor installed in advance, and achieve the effect of ensuring safety and reliability, reducing size, and high gain

Active Publication Date: 2017-05-03
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the PD detection sensor needs to be installed in advance or has low anti-interference ability

Method used

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  • gis partial discharge online detection external multi-band UHF sensor
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  • gis partial discharge online detection external multi-band UHF sensor

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Embodiment 2

[0040] In this embodiment, the shape of the patch 1 is as Figure 4shown. Among them, the distances of each section are: 1-2: 29mm, 2-3: 37mm, 3-4: 30mm, 4-5: 38mm, 5-6: 31mm, 6-7: 39mm, 7-8: 32mm , 8-9: 40mm, 9-10: 13mm, 10-11: 5mm, 11-12: 13mm, 12-13: 41mm, 13-7: 1mm, 8-14: 1mm, 14-15: 37mm, 15 -16: 2.5mm, 16-17: 35mm, 17-18: 2.5mm, 18-19: 37mm, 19-13: 1mm, 14-20: 1mm, 20-21: 37mm, 21-22: 3mm, 22-38: 15.5mm, 16-23: 35mm, 23-24: 2.5mm, 24-39: 2.5mm, 39-25: 16.5mm, 25-26: 3.5mm, 26-27: 23mm, 27-28 : 7mm, 28-31: 1mm, 31-32: 34mm, 32-33: 1mm, 33-20: 2mm, 20-34: 2.5mm, 34-37: 20.5mm, 37-40: 16.5mm, 37- 36: 3.5mm, 36-35: 23mm, 35-33: 7mm, 33-32: 1mm. Such as Figure 5 is the measured standing wave ratio of the monopole microstrip antenna of the present invention in the range of 0.04G-2G. The four resonant frequencies of the antenna are 286.1MHz, 741.1MHz, 911.3MHz and 1.509GHz respectively. The VSWR of the antenna is about 1.13 at 286.1MHz, about 1.89 at 741.1MHz, about 1.4...

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Abstract

The invention discloses an external multi-band ultrahigh-frequency sensor for online GIS partial discharge detection, and belongs to the technical field of online partial discharge detection inside electrical equipment. The external multi-band ultrahigh-frequency sensor mainly composed of a wire metal patch, a grounding metal patch, a dielectric board, a sensor sealing cover and the like. According to the external multi-band ultrahigh-frequency sensor for online GIS partial discharge detection, the structure is simple, detection on multiple bands can be realized, partial discharge inside the GIS can be online monitored, the anti-interference ability is strong, sensitivity is high, the detection precision is high, the size is small, and safe and stable operation of the GIS can be ensured. The external multi-band ultrahigh-frequency sensor for online GIS partial discharge detection can be widely applied to online partial discharge detection inside the electrical equipment, and particularly applied to online partial discharge detection inside the GIS.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of internal partial discharges of electric equipment, and in particular relates to an external ultra-high frequency sensor applied to on-line detection of internal partial discharges of gas-insulated combined electrical appliances. Background technique [0002] Gas-insulated combined electrical appliances (GIS for short) have the advantages of compact structure, small footprint, safe and reliable operation, small maintenance workload, long maintenance cycle, etc., and have been widely used in power plants and substations in power systems. However, in GIS, the insulation defects caused by various reasons will cause partial discharge (referred to as PD) under the action of strong electric field. serious loss. When PD occurs in GIS, it will generate abundant electromagnetic wave signals. Because GIS is a good wave conductor, electromagnetic waves can propagate axially along the coaxial wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 唐炬谭巧曾福平张晓星王邸博凌超肖松
Owner CHONGQING UNIV
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