Ultrasonic positioning device and method for GIS withstand voltage breakdown fault

An ultrasonic and fault technology, applied in the direction of testing dielectric strength, can solve problems such as insulation damage and loss, and achieve the effect of avoiding insulation damage

Inactive Publication Date: 2014-10-01
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In view of this, the present invention provides an ultrasonic positioning device and method for GIS voltage breakdown faults to solve the problem in the prior art that it is easy to cause insulation damage to normal GIS parts and cause unnecessary losses. The specific scheme is as follows :

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  • Ultrasonic positioning device and method for GIS withstand voltage breakdown fault
  • Ultrasonic positioning device and method for GIS withstand voltage breakdown fault
  • Ultrasonic positioning device and method for GIS withstand voltage breakdown fault

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] This embodiment discloses an ultrasonic locating device for GIS withstand voltage breakdown faults, and its structural schematic diagram is as follows figure 1 shown, including:

[0034] An ultrasonic sensor 11 , a signal processing module 12 connected to the ultrasonic sensor 11 , and a data analysis module 13 connected to the signal processing module 12 .

[0035] The ultrasonic sensor 11 is installed on the cavity shell of the gas-insulated combined...

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Abstract

The invention discloses an ultrasonic positioning device and method for a GIS withstand voltage breakdown fault. The method comprises the steps that ultrasonic signals are collected through multiple ultrasonic sensors arranged on a shell of a cavity of a GIS interval air chamber, subjected to filtering, amplifying and A / D conversion by a signal processing module and output to a data analysis module; when the processed signals meet preset conditions, it is judged that the positions where the ultrasonic sensors collecting the ultrasonic signals are located are suspected fault locations; firstly, the position of a detection point with the maximum signal amplitude is determined, and then the detection point is judged to be a suspected fault location or not by judging whether the range of the difference between signal duration at the detection point and signal duration at an adjacent detection point is within a preset range, namely, the suspected fault location can be determined just through one-time obtaining of the ultrasonic signals. Consequently, the problem that when a scheme in the prior art is adopted, insulation damage is caused to a normal GIS part is avoided.

Description

technical field [0001] The invention relates to the field of fault location, in particular to an ultrasonic location device and method for a GIS withstand voltage breakdown fault. Background technique [0002] Gas Insulated Switchgear (GIS) refers to gas-insulated metal-enclosed switchgear with SF6 as the insulating medium, also known as closed combined electrical equipment, which has a small footprint, compact space, and is not affected by the external environment. With the advantages of high reliability, it has a tendency to replace conventional substations. [0003] As a handover test item, the GIS on-site withstand voltage test is to check whether there is any hidden trouble in the process of dismantling, packaging, transportation and on-site installation of GIS equipment, and to verify whether its insulation performance is intact. , Poor process control and other factors in the process of transportation, etc., the breakdown failure of GIS will occur in the process of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 邵先军徐华何文林刘浩军董雪松刘石
Owner STATE GRID CORP OF CHINA
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