A gis fault precise location method and location system based on vibration signal

Abstract

The invention discloses a GIS fault precise positioning method and a positioning system based on vibration signals. The GIS fault precise positioning system is adopted; the GIS fault precise positioning system includes a vibration sensor, a data acquisition instrument and a PC connected in sequence, and the vibration The sensor is fixedly installed on the shell surface of the GIS equipment. The GIS fault precise location system based on the vibration signal provided by the present invention has no electrical connection between the vibration signal collection and the GIS equipment, and is simple in structure, easy to operate, economical and practical. The vibration signal-based GIS fault precise positioning method provided by the invention can precisely locate mechanical faults and insulation faults at the same time, and the positioning accuracy is higher than that of existing means and methods.

Description

technical field [0001] The invention relates to a fault location method for electrical equipment, in particular to a precise fault location method for GIS equipment, and belongs to the field of GIS equipment state monitoring and fault diagnosis. Background technique [0002] GIS equipment, that is, Gas Insulated Metal Enclosed Switchgear (Gas Insulated Switchgear), was born in the mid-1960s. It combines circuit breakers, disconnectors, fast (grounding) switches, current transformers, voltage transformers, arresters, Three-phase or single-phase), connecting pipes and transition elements are all combined in a fully enclosed metal shell, and the medium used for insulation and arc extinguishing in the shell is SF6 gas of 0.35-0.6MPa. [0003] With the continuous maturity of technology, GIS equipment occupies an area and volume smaller and smaller, and its operation is more and more reliable. The failure rate and maintenance workload of GIS equipment put into operation in the ear...

AI Technical Summary

Problems solved by technology

GIS faults mainly include mechanical faults and insulation faults (partial discharge). At present, there are endless fault diagnosis methods for GIS, mainly for partial discharge, including ultrasonic method, ultra-high frequency method, etc., but the scope of application of monitoring methods is relatively single and cannot Taking into account both mechanical faults and insulation faults, and the lack of precise positioning means, UHF and ultrasonic positioning are limited to preliminary positioning of partial discharges and gas chambers, and the specific parts cannot be determined. The main reason is that ultrasonic and UHF positioning Insufficient sampling resolution to distinguish positional differences over short distances

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