Predicting Critical Conditions in Polluted Insulators Using Phase Angle Index of Leakage Current

Palangar, Mousalreza Faramarzi; Mirzaie, Mohammad

doi:10.1109/ichve49031.2020.9279981

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…[ [14][15][16] Phase angle difference between voltage & LC Hard to record applied voltage on an insulator in real overhead lines [19,23,24] The infrared thermal image camera…”

Section: Refmentioning

confidence: 99%

“…In other studies, along with the insulator state detection by the LC analysis, the probability of flashover occurrence is discussed. In [14][15][16], the phase angle difference of the applied voltage and LC is analyzed to predict the insulator's state and the likelihood of flashover occurrence. In [17], an analysis of the LC harmonics components is presented to identify the condition of the insulator.…”

Section: Introductionmentioning

confidence: 99%

“…Table I lists various insulator diagnostic methods that are not using LC harmonic components characteristics along with the disadvantage of each method. In all these methods, the index declaring the insulator's state is based on the physical aspects of the insulator while the LC characteristic refers to the inherent features of the insulator [2,[14][15][16][17]. LC characteristics comprise several numerical indices such as amplitude, total harmonic distortion, frequency, harmonic components, and phase angle.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Identification of Composite Insulator Criticality Based on a New Leakage Current Diagnostic Index

Palangar

Amin

Bakhshayesh

et al. 2021

IEEE Trans. Instrum. Meas.

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In this paper, a new method is proposed to identify the health condition of composite insulators through investigating the leakage current (LC) along with the electric potential (EP) and electric field stress (EFS) profiles. In this regard, variations of the LC harmonics and the distribution profiles of the EP and EFS are investigated through series of experimental and simulation analyses conducted on composite insulators under various environmental and pollution conditions. Fast Fourier Transform and COMSOL-Multiphysics environment are utilized to analyze this variation. Results reveal a strong correlation between the LC harmonics and the insulator health condition. A new diagnostic criticality index based on the third to the fifth harmonic ratio of the insulator LC is proposed to quantify the composite insulator criticality and predict the likelihood of flashover occurrence. The EP and EFS analysis can be used to provide a complimentary diagnosis to the insulator health state under severe pollution and humidity conditions. The proposed analysis enables the transmission line network operator to get an insight into the insulators' functional status and thus improving the network reliability through avoiding insulator failure and adopting a proper condition-based maintenance scheme.

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“…[ [14][15][16] Phase angle difference between voltage & LC Hard to record applied voltage on an insulator in real overhead lines [19,23,24] The infrared thermal image camera…”

Section: Refmentioning

confidence: 99%