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Calibration device and method for GIS/GIL partial discharge diagnosis

A calibration device and partial discharge technology, applied in the direction of measuring device, measuring electricity, measuring electrical variables, etc., can solve the problems of difficult operation, poor consistency of standard signals, etc., and achieve the effects of good consistency, simple structure and convenient use.

Active Publication Date: 2018-11-20
XI AN JIAOTONG UNIV +3
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to manual release, this calibration method has the disadvantages of poor consistency of standard signals and difficult operation, so it has not been widely used in the test site

Method used

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  • Calibration device and method for GIS/GIL partial discharge diagnosis

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but not as a limitation of the present invention.

[0022] Such as figure 1 As shown, a calibration device for GIS / GIL partial discharge diagnosis provided by the present invention includes an electromagnet 1 , a metal ball 2 , a support 3 and a control circuit 4 . The electromagnet 1 is placed in the support 3, and the support 3 is provided with a through hole, and the metal ball 2 is placed in the through hole. The control circuit 4 is connected with the electromagnet to control the action of the electromagnet, and the metal ball 2 is driven to and fro by the electromagnet 1 . Wherein, the control circuit 4 includes a signal generating circuit and a relay, and the signal generating circuit generates a square wave signal with a certain frequency and a duty ratio to drive the relay on and off, and then the relay controls the electromagnet to generate m...

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Abstract

The invention provides a calibration device for GIS / GIL partial discharge diagnosis, and the calibration device includes an electromagnet, a metal ball, a support and a control circuit. The electromagnet is arranged in the support, a through hole is arranged in the support, and the metal ball is arranged in the through hole. The control circuit is connected with the electromagnet and controls theelectromagnet to act, and the metal ball reciprocates under the driving of the electromagnet. The invention also provides a calibration method for GIS / GIL partial discharge diagnosis. The calibrationdevice and method provided by the invention can generate ultrasonic signals for calibration with good consistency, is simple in structure and convenient to use, and can meet the calibration requirements of an acoustic emission sensor for partial discharge diagnosis.

Description

technical field [0001] The invention belongs to the technical field of high-voltage testing, and in particular relates to a calibration device and method for GIS / GIL partial discharge diagnosis. Background technique [0002] Gas-insulated closed combined electrical appliances (GIS) and gas-insulated transmission lines (GIL) may be damaged by poor processing technology during product manufacturing, mechanical friction during handling, separation and closing operations of electrical components, and spark discharge during operation. lead to the generation of metal particles. Therefore, the contamination of metal particles inside GIS / GIL is inevitable. According to the statistics of the CIGRE 33 / 23.12 working group of the International Large Power Grid Conference, insulation failures caused by particles or foreign objects account for 20% of all insulation failures. Under the influence of externally applied electric field or mechanical vibration, particles or foreign objects ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00G01R31/12
CPCG01R31/1209G01R31/1254G01R31/1272G01R35/00
Inventor 吴治诚李志兵李晓昂宋佳洁张乔根王浩刘焱刘贞瑶陈轩
Owner XI AN JIAOTONG UNIV
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