Detecting system and method for partial discharge detecting sensor of GIS (gas insulated switchgear)

A combination of partial discharge detection and gas insulation technology, which is applied in the direction of instruments, measuring devices, and measuring electrical variables, can solve the problems of incomparable performance of GIS partial discharge detection systems and incomparable performance differences of ultrasonic sensors, achieving good results. The results are intuitive and accurate

Active Publication Date: 2013-10-02
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0006] At present, there is no calibration standard for ultrasonic sensors and ultra-high frequency (UHF) sensors for measuring GIS partial discharge in China, which leads to incomparable performanc

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  • Detecting system and method for partial discharge detecting sensor of GIS (gas insulated switchgear)
  • Detecting system and method for partial discharge detecting sensor of GIS (gas insulated switchgear)
  • Detecting system and method for partial discharge detecting sensor of GIS (gas insulated switchgear)

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[0050] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0051] Such as figure 1 As shown, figure 1 It is the front view of the GIS partial discharge ultrasonic and UHF sensor detection and calibration system; in the figure, the GIS partial discharge ultrasonic and UHF sensor detection and calibration system includes GIS tanks, high voltage bushings, pressure equalizing rings, basin insulators, built-in cameras, GIS Partial discharge model, standard UHF sensor, UHF sensor to be tested, ultrasonic signal injection port and UHF signal injection port.

[0052] The GIS tank is perpendicular to the high-voltage casing and connected at the lower end. The upper end of the high-voltage casing is equipped with a pressure equalizing ring. The GIS tank is symmetrically equipped with basin insulators on both sides of the high-voltage casing and the standard UHF sensor and the UHF sensor to be tested. Con...

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Abstract

The invention provides a detecting system and method for a partial discharge detecting sensor of GIS. The method comprises steps as follows: detecting and verifying the GIS partial discharge detecting sensor; detecting and verifying a GIS partial discharge UHF (ultra high frequency) sensor; and detecting and verifying a GIS partial discharge ultrasonic and UHF sensor positioning system. The system comprises a system GIS tank, a high-voltage sleeve, grading rings, basin-type insulators, a built-in camera, typical GIS defect models, a standard UHF sensor, a to-be-detected UHF sensor, an ultrasonic signal injection port, a UHF signal injection port, ultrasonic sensors, an ultrasonic partial discharge positioning system and a UHF partial discharge positioning system. The system and the method solve the problems that performance differences of ultrasonic sensors and UHF sensors of manufacturers cannot be compared and the performance of GIS partial discharge detecting systems of the manufacturers cannot be compared.

Description

technical field [0001] The present invention relates to a system and method in the field of intelligent electrical appliances, in particular to a detection and verification system and method for a partial discharge detection sensor of a gas-insulated combined electrical appliance (GIS). Background technique [0002] Gas insulated switchgear (GIS) is widely used in the field of high-voltage transmission because of its small footprint, less maintenance workload, excellent insulation performance, and high reliability. With the continuous increase of the grid voltage level and system capacity, the internal faults of GIS equipment also increase. When GIS fails, the maintenance is complicated, the repair time is long, the affected area is large, and the consequences are serious. method is particularly important. At present, it is mainly realized through the detection of partial discharge in the world. The partial discharge (PD) signal contains a wealth of insulation state inform...

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Application Information

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IPC IPC(8): G01R35/00
Inventor 邱进陈江波吴世普李辉张曦徐思恩许晶杜砚何妍冯宇汪本进郭慧浩周翠娟朱丝丝黄琴
Owner STATE GRID CORP OF CHINA
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