GIS composite partial discharge power supply simulation device

Abstract

The present invention relates to a GIS composite partial discharge power supply simulation device. The GIS composite partial discharge power supply simulation device comprises a metal upper cover plate (1), SF6 gas, a grounding module (12), a metal lower cover plate (13), a high pressure guiding rod (7), a plexiglass cylinder (8), an aeration module (11), a tip defect discharge module, an internalair gap defect discharge module, a creeping defect discharge module, and a floating defect discharge module; the metal upper cover (1) and the metal lower cover (13) are respectively fixedly connected with the plexiglass cylinder to form a closed space for accommodating the SF6 gas; and two ends of the tip defect discharge module, the internal air gap defect discharge module, the creeping defectdischarge module and the floating defect discharge module are all respectively fixedly connected with the metal upper cover (1) and the metal lower cover (13). Compared with the prior art, the GIS composite partial discharge power supply simulation device provided by the present invention has the advantages of strong practicability, convenient installation and debugging, a simple structure, a lowcost, good sealing performance, high safety, and the like.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to a GIS composite partial discharge source simulation device. Background technique [0002] Various potential defects in GIS may lead to different degrees of partial discharge, and long-term discharge will make the insulation deteriorate and gradually expand, and even cause the entire insulation breakdown or flashover along the surface, resulting in huge losses. At present, the discharge detection test of GIS in the power industry mainly focuses on how to find its internal insulation defects. The main methods include factory withstand voltage test, on-site handover test, live detection or online monitoring. The summary of operation experience shows that the types of internal insulation defects mainly include tip defects of conductor or ground potential glitch discharge, internal discharge defects of insulating basin, surface discharge defects and suspension discharge defect...

AI Technical Summary

Problems solved by technology

In order to better grasp the signal characterization characteristics of various defect discharges under different detection methods (pulse current method, ultrasonic method, UHF method, etc.), researchers usually make partial discharge source simulation devices, which are generated under high-voltage test systems. Corresponding partial discharge signals; each partial discharge source simulation device can only generate partial discharge signals of one type of defect, which makes it necessary to repeatedly remove and reconnect and install different types of defect discharge simulation devices to generate different types of defect discharges during research The partial discharge signal, which brings great inconvenience and safety hazard to the research

[0003] Chinese Utility Model Patent Publication No. CN205643609U discloses a simulation device for multiple partial discharges inside a GIS, including a GIS gas chamber and a busbar located in the GIS gas chamber, at least one GIS internal partial discharge simulation device is provided between the busbar and the GIS shell Experimental device, this utility can realize the simulation of various discharge defects, but cannot realize the combined simulation of two or more discharge defects

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