Test device for measurement of partial discharge signal attenuation by ultrasonic method

A technology of discharge signal and ultrasonic method, which is applied in measuring devices, circuit breaker testing, measuring ultrasonic/sonic/infrasonic, etc.

Active Publication Date: 2018-04-20
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no test and measurement device specially used for partial discharge signal attenuation in the market

Method used

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  • Test device for measurement of partial discharge signal attenuation by ultrasonic method

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Embodiment Construction

[0013] Example of a test setup for measurement of partial discharge signal attenuation by ultrasonic method, such as figure 1 As shown, the test device includes a high-voltage lead terminal, a horizontal bus sleeve 11, a disconnector 12 and a vertical bus sleeve 13, and the high-voltage lead terminal includes an external terminal sleeve 14 and a high-voltage lead 15 located in the terminal sleeve 14, The terminal sleeve 14 of the high-voltage lead terminal is arranged vertically and is fixedly equipped with a first busbar adapter barrel at the lower end. The lower end of the first busbar adapter barrel is fixedly connected with a first support seat 17. The upper end of the vertical busbar sleeve 13 An end cover 18 is closed, and an upper insulator 19 and a lower insulator 20 are arranged at intervals between the upper and lower insulators. A vertical high-voltage conductor 21 is arranged between the upper and lower insulators, and a shielding head 22 is arranged at the upper en...

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Abstract

The invention relates to the technical field of partial discharge detection, in particular to a test device for measuring the attenuation of partial discharge signals by an ultrasonic method. The test device includes a high-voltage lead terminal, a horizontal busbar sleeve and a vertical busbar sleeve. The horizontal busbar sleeve is equipped with a horizontal high-voltage conductor, and the vertical busbar sleeve is equipped with a vertical high-voltage conductor. Connection, the vertical high-voltage conductor and the horizontal high-voltage conductor are connected through an isolating switch, the connection between the isolating switch and the vertical high-voltage conductor forms an L-shaped structure, and the L-shaped structure between the high-voltage lead terminal and the horizontal high-voltage conductor is provided with a discharge tip , the horizontal busbar sleeve, the isolating switch, and the vertical busbar sleeve are respectively equipped with ultrasonic sensors, and the ultrasonic sensors are connected to an ultrasonic analyzer through coaxial cables of equal length. It provides a theoretical basis for setting the best installation position and quantity in the online monitoring system.

Description

technical field [0001] The invention relates to the technical field of partial discharge detection, in particular to a test device for measuring the attenuation of partial discharge signals by an ultrasonic method. Background technique [0002] Gas-insulated switchgear (GIS) has been widely used in electrical systems due to its high reliability and small footprint. As an important manifestation of insulation damage of power equipment, partial discharge widely exists in all kinds of operating equipment. Due to the limitations of the manufacturing process and the requirements of operating voltage, it is impossible and unreasonable to completely avoid the occurrence of partial discharge in operating electrical equipment Yes, but it is necessary to limit the partial discharge level and required level of electrical insulating materials. [0003] The partial discharge detection of gas insulated switchgear can effectively understand the insulation status of the equipment and timel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00G01R31/12G01R31/327
Inventor 刘宝宝张高潮曾其武马悦许嘉宁
Owner STATE GRID CORP OF CHINA
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