Research On Localization Method Of GIS Mechanical Resonance Source Based On Beamforming Identification Technology

As an important equipment widely used in power system,GIS equipment’s health status directly affects the safe and stable operation of power system,and it has always been the key research object of scientific researchers.With the rapid development of my country’s power system,the mechanical failure of GIS equipment during operation has become increasingly prominent,threatening the safe and stable operation of my country’s power grid.Compared with the current detection methods mainly based on vibration detection,a non-contact GIS mechanical resonance source localization detection method is urgently needed.Therefore,this paper studies the GIS mechanical resonance source localization method combined with the beamforming identification technology.First of all,this paper compares and summarizes the main detection methods of current GIS equipment.The purpose and significance of this study are expounded.And through the introduction of the research status of sound source localization technology and GIS mechanical resonance source,the main research content of this paper is summarized.Secondly,this paper expounds the relevant calculation model of the beamforming algorithm,which is used as the basis for the introduction of the subsequent algorithm principle.Then the calculation principles and implementation steps of the three algorithms of delay summation algorithm,MUSIC algorithm and Unitary-ESPRIT algorithm are introduced in detail.Finally,combined with MATLAB numerical simulation,the three algorithms are compared in terms of spatial resolution,precision performance and computational efficiency,and the beamforming algorithm used in the subsequent system development is determined.After that,this paper introduces the hardware design of the GIS mechanical resonance source location detection system,introduces its hardware composition and the relationship between each part,and introduces the hardware selection and its functional parameters in detail.Finally,this paper introduces the software design scheme of the GIS mechanical resonance source location detection system in detail,and introduces each module in the software design in detail.After the design and selection of software and hardware,a GIS mechanical resonance source location detection system is designed and developed based on the Lab VIEW software platform.The sound source localization method and system platform of this paper are verified by laboratory test experiments and field test experiments,and the results show that it has good reliability and feasibility.