A Novel UHF Antenna for Partial Discharge Detection Based on Coplanar Waveguide Feed
A technology of partial discharge detection and coplanar waveguide, which is applied in the directions of antenna grounding device, antenna grounding switch structure connection, dielectric strength test, etc. It can solve the problems of not meeting the requirements of UHF detection, difficult to manufacture and install, narrow bandwidth, etc. , to meet the needs of UHF detection, small size, easy to manufacture and install
Active Publication Date: 2022-06-28
TIANJIN UNIV
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Problems solved by technology
[0004] Existing UHF antennas mainly include helical antennas and microstrip antennas, etc. The working bandwidth of helical antennas meets the requirements of UHF detection, but their size is large and difficult to manufacture and install; antennas such as microstrip antennas are small in size and easy to process. However, the bandwidth is narrow and does not meet the requirements of UHF detection
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[0022] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
[0023] A new type of UHF antenna for partial discharge detection based on coplanar waveguide feeding, such as figure 1 and figure 2 As shown, it includes an insulating dielectric substrate 1 , a metal radiation patch 2 , a three-segment microstrip line 4 and a ground electrode plate 5 . The metal radiation patch 2 , the three-segment microstrip line 4 and the ground electrode plate 5 are all mounted on the front surface of the insulating dielectric substrate 1 . The metal radiation patch 2 has a rectangular structure, four corners of the metal radiation patch 2 are provided with metal radiation patch chamfers 3 , and the metal radiation patch 2 is mounted on the front center of the insulating medium substrate 1 . The three-segment microstrip line 4 is installed just below the outer side of the metal radiation patch 2 and is connected to it...
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Abstract
The invention relates to a new type of UHF antenna for partial discharge detection based on coplanar waveguide feeding. The three-segment microstrip line and the grounding plate are all located on the front of the insulating dielectric substrate, the metal radiation patch is mounted on the front center of the insulating dielectric substrate, and the three-segment microstrip line is mounted below and connected to the metal radiation patch , the ground plate is mounted on both sides of the three-segment microstrip line. In the invention, the metal radiation patch and the grounding plate are chamfered and installed on the insulating dielectric substrate, and a three-segment microstrip line structure is adopted, which can produce good broadband characteristics and directional characteristics in the 530MHz~1000MHz frequency band. The overall structure of the antenna It is compact, small in size, easy to manufacture and install, can better meet the needs of UHF detection, and has important value and significance for partial discharge detection and the overall safety and reliability of power equipment.
Description
technical field [0001] The invention belongs to the field of high-voltage equipment, and relates to partial discharge detection equipment, in particular to a novel ultra-high frequency antenna for partial discharge detection based on coplanar waveguide feeding. Background technique [0002] With the continuous increase in the scale of the power grid and the gradual increase in transmission capacity, the reliability and safety requirements for power equipment such as gas-insulated fully enclosed combined electrical appliances (GIS) are also getting higher and higher. The above-mentioned power equipment will have a breakdown discharge phenomenon during operation. Partial discharge is the main factor that causes the insulation failure of power equipment. The detection of partial discharge helps to evaluate the insulation state of power equipment. [0003] Partial discharge will be accompanied by many physical and chemical changes. Commonly used detection methods include pulse c...
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IPC IPC(8): H01Q1/38H01Q1/50H01Q1/48G01R31/12
Inventor 陈允杜伯学孔晓晓赵彦淇李奇王义方
Owner TIANJIN UNIV