GIS partial discharge charged detection test device based on defect simulation

Abstract

The invention discloses a GIS partial discharge charged detection test device based on defect simulation, comprising a no-partial-discharge test transformer, a no-partial-discharge detection impedor, GIS defect simulation equipment, and a charged partial discharge detector. The no-partial-discharge test transformer is connected with defective components pre-arranged in the GIS defect simulation equipment through the no-partial-discharge detection impedor. A built-in broadband ultrahigh-frequency sensor is arranged inside the GIS defect simulation equipment, an external broadband ultrahigh-frequency sensor is arranged outside the GIS defect simulation equipment, and the built-in broadband ultrahigh-frequency sensor and the external broadband ultrahigh-frequency sensor are connected with the input end of the charged partial discharge detector. The device of the invention can be applicable to GIS partial discharge charged detection test under all kinds of defect simulation, can be used for simulating various defects truly and conducting charged detection test of local discharge signals for the defects, and has the advantages of simple structure principle, low cost and high reliability of test results.

Description

technical field [0001] The invention relates to live detection and diagnosis technology of GIS defects, in particular to a GIS partial discharge live detection test device based on defect simulation. Background technique [0002] Due to its small footprint and high operational reliability, GIS equipment is widely used in power systems, especially in urban power supply systems. Since GIS is a closed device with limited test methods and long maintenance period, it is difficult to find its internal defects according to traditional preventive tests or routine tests, or insulation accidents may occur during the test period, causing huge losses and impacts. In recent years, the live detection technology of power equipment has developed rapidly. For high-voltage switchgear, due to the influence of factors such as equipment quality defects and aging after long-term operation, various defects will appear in GIS during long-term operation. These defects will cause For the generation ...

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Problems solved by technology

[0003] At present, the live detection technology of GIS equipment is still in its infancy, and the application of the live detection technology of GIS equipment is limited to the data reading of live detection instruments, which is empirical and subjective; at the same time, the current partial discharge live detection technology of GIS equipment The detection technology is still in the stage of theoretical research and ideal defect simulation, and it is impossible to conduct comprehensive and systematic research on the relationship between the live detection signal characteristics of partial discharge of GIS equipment and the real discharge amount, and detection effectiveness.

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