Condition monitoring of 11 kV overhead power distribution line insulators using combined wavelet and LBP‐HF features

Prasad, P. Surya; Rao, B. Prabhakara

doi:10.1049/iet-gtd.2016.0836

Cited by 16 publications

(1 citation statement)

References 28 publications

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“…Furthermore, other scholars have proposed some advanced online monitoring methods, such as thermal imaging, ultrasound, UV imaging, etc. [10][11][12][13]. However, the literature [14] points out that thermal imaging is influenced and limited by climatic conditions, while the ultrasound method has the problems of coupling and attenuation, and it is also limited by the performance of the ultrasonic converter.…”

Section: Introductionmentioning

confidence: 99%

Research on the Non-Contact Pollution Monitoring Method of Composite Insulator Based on Space Electric Field

Zhang

Liu³

et al. 2021

Energies

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Through spatial electric field monitoring, it is expected to realize insulator pollution condition monitoring and contamination flashover warning in a non-contact way. Therefore, in this paper, the spatial electric field distribution characteristics of 110 kV composite insulators are simulated, where the effects of different surface states and their discharge levels on the spatial electric field of insulators are analyzed. On this basis, a non-contact monitoring method for composite insulator pollution based on the spatial electric field is proposed. The results show that there are significant differences in the spatial electric field of the composite insulator among three conditions, namely cleaning, pollution layer wetting, and dry band arcing. Increases of pollution layer wetting and dry band arcing would lead to an increase of the amplitude of the spatial electric field of the insulator. Verification experiments well indicated that it is feasible to identify the degree of pollution layer wetting as well as dry band arcing of the insulator string by fixed-point monitoring, the spatial electric field signal at the cross-strand of d = 0.5 m and directly opposite the last three positions. Research results can provide references for the online monitoring of overhead line polluted insulators and its flashover warning.

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Section: Introductionmentioning

confidence: 99%