NDLI: Review of direction of arrival estimation algorithms for partial discharge localisation in transformers

Content Provider	IET Digital Library
Author	Chen, Zilong
Abstract	Partial discharge (PD) represents one of the most significant evaluation indicators relevant to transformer insulation degradation. Thus, detection and location of PD are essential. During the last year, a PD localisation method occurred which uses phased arrays. With respect to this method, the choice of localisation algorithm is a particularly important issue, since choosing a suitable localisation algorithm can efficiently improve positioning accuracy and significantly reduce computational complexity. This study introduces and analyses the characteristics of six direction of arrival estimation algorithms, which can be applied as localisation algorithms. Besides, the effect of the element spacing, number of snapshots, and signal-to-noise ratio on the above-mentioned algorithms were also analysed by simulation. The results provide useful guidance for electric engineers engaged in PD location.
Starting Page	529
Ending Page	535
Page Count	7
ISSN	17518822
Volume Number	13
e-ISSN	17518830
Issue Number	Issue 4, Jun (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/13/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2018.5297
Journal	IET Science, Measurement & Technology
Publisher Date	2019-01-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Computational Complexity Dielectric Breakdown And Discharges Direction of Arrival Estimation Element Spacing Insulation And Insulating Coatings Partial Discharge Localisation Partial Discharges PD Detection PD Localisation Method PD Location Phased Array Power Transformer Insulation Signal to Noise Ratio Suitable Localisation Algorithm Transformer And Reactors Transformer Insulation Degradation
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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