Harmonics ratios of resistive leakage current as metal oxide surge arresters diagnostic tools

Khodsuz, Masume; Mirzaie, Mohammad

doi:10.1016/j.measurement.2015.03.048

Cited by 26 publications

(18 citation statements)

References 16 publications

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“…The advantage of this method is that the harmonic components of the applied voltage are not ignored, where the resistive current is extracted from the total leakage current under applied harmonic voltages. This method has also been used to study the main factors of leakage current variation and the influence of leakage current on UV aging and pollution [23,24].…”

Section: Introductionmentioning

confidence: 99%

Measurement and Modelling of Leakage Current Behaviour in ZnO Surge Arresters under Various Applied Voltage Amplitudes and Pollution Conditions

et al. 2018

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In zinc oxide (ZnO) surge arresters, leakage current usually flows across the arrester under normal operating condition. Leakage current is one of the factors which contribute towards degradation of surge arresters and therefore, it is very important to monitor the condition of surge arrester. In this work, the behaviour of leakage current in a ZnO surge arrester during normal operation, under different voltage amplitudes, wetness and pollution conditions was analysed. An 11 kV surge arrester model in three-dimensional space was subjected to finite element analysis (FEA) to determine the leakage current under different conditions. The results from the FEA model were compared with the measurement results to validate the model that has been developed. From comparison between the measurement and simulation results, physical parameters of a surge arrester that influence the leakage current under different conditions of the surge arrester were identified from the model. Through this work, a better understanding of leakage current behaviour can be attained, which may help in condition monitoring analysis on surge arrester in electrical utilities.

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Section: Introductionmentioning

confidence: 99%

Measurement and Modelling of Leakage Current Behaviour in ZnO Surge Arresters under Various Applied Voltage Amplitudes and Pollution Conditions

et al. 2018

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“…Various off-line and on-line methods, including the reference voltage [6][7], leakage current [8][9][10][11][12][13][14], power loss [15], voltage-current characteristic, thermal measurement [16], and electromagnetic field [17], have been presented for condition monitoring of MOV. The power loss and voltage-current characteristic methods include the detections of both leakage current and additional voltage signal, resulting in the complication of measuring circuit.…”

Section: Condition Monitoring Of Movmentioning

confidence: 99%

Condition monitoring and deterioration analysis of metal oxide varistor

Wang

Kim

Lee

et al. 2018

Journal of Electrical Engineering

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With the growing demand for application of metal-oxide varistor (MOV) in low-voltage electronic circuits for overvoltage protection, it is necessary to ensure its performance to avoid the short-circuit and the line-to-ground fault during operation. In this paper, a precise leakage current analyzer was developed to detect the total leakage current and third harmonic component of MOV for its condition monitoring. The voltage- and temperature-dependent measuring uncertainties were compensated using the multipliers. In addition, the deterioration characteristics of the MOV and the newly developed thermally protected metal-oxide varistor (TMOV) were investigated in the accelerated aging test. From the experimental results, the MOV deteriorated much faster under the lightning current impulse synchronized with power-frequency voltage. The thermally activated fuse of TMOV exploded under two types of impulses, which indicated that the TMOV is much more vulnerable and that it is difficult to diagnose the condition of energized TMOV in advance.

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“…For condition monitoring of surge arresters, many off-line and on-line techniques have been presented in literature such as: power loss method [5], V-I characteristic curve analysis [6], leakage current measurement [7][8][9][10][11], temperature measurement [12][13][14] and electro-magnetic field measurement [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…Surge arresters are known to exhibit an increase in the fundamental and third harmonics of the resistive current in relation with the arrester's operating time [7][8][9][10][11]. Therefore, the extraction of resistive current and its harmonic components is required for proper condition assessment.…”

Section: Introductionmentioning

confidence: 99%

An improved time-delay addition method for MOSA resistive leakage current extraction under applied harmonic voltage

Khodsuz

Mirzaie

2016

Measurement

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Harmonics ratios of resistive leakage current as metal oxide surge arresters diagnostic tools

Cited by 26 publications

References 16 publications

Measurement and Modelling of Leakage Current Behaviour in ZnO Surge Arresters under Various Applied Voltage Amplitudes and Pollution Conditions

Measurement and Modelling of Leakage Current Behaviour in ZnO Surge Arresters under Various Applied Voltage Amplitudes and Pollution Conditions

Condition monitoring and deterioration analysis of metal oxide varistor

An improved time-delay addition method for MOSA resistive leakage current extraction under applied harmonic voltage

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