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

Khodsuz, Masume; Mirzaie, Mohammad

doi:10.1016/j.measurement.2015.09.027

Cited by 22 publications

(9 citation statements)

References 21 publications

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“…For every pollution type, the arrester was cleaned and rinsed with water thoroughly before another type of pollution was applied. At the end of the experiment, the leakage current waveform recorded by the oscilloscope was used to extract the resistive and capacitive current using an improved time-delay addition method (ITDAM), which has been explained in Section 2.3 [22].…”

Section: Proposed Methodologymentioning

confidence: 99%

“…There are several techniques to compute the value of resistive leakage current from the total leakage current. The method used to extract resistive leakage current in this study is the improved time delay addition method (ITDAM) [22]. This technique is based on the orthogonality between resistive and capacitive currents.…”

Section: Leakage Current Extraction Methodsmentioning

confidence: 99%

“…Therefore, several methods for extracting resistive leakage current from the total leakage current have been proposed by many academics. There are the point-on-wave method (POWM) [18], current compensation method (CCCM) [17,19,20], current orthogonality method (COM) [16], resistive current waveshape-based method (RCWM) [21], harmonic analysis method (HAM), time delay addition method (TDAM) and improved time delay addition method (ITDAM) [22].…”

Section: Introductionmentioning

confidence: 99%

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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: Proposed Methodologymentioning

confidence: 99%

Section: Leakage Current Extraction Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…The resistive current was extracted from the leakage current waveform recorded by the oscilloscope using an improved time-delay addition method (ITDAM) (Khodsuz and Mirzaie, 2016).…”

Section: Leakage Current Measurement Setupmentioning

confidence: 99%

Design technique for leakage current reduction in surge arrester using gravitational search algorithm and imperialist competitive algorithm

Latiff

Illias

Bakar

et al. 2018

COMPEL

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Purpose Leakage current is one of the factors, which can contribute towards degradation of surge arresters. Thus, the purpose of this paper is to study on leakage current within surge arresters and improvement on their design. Design/methodology/approach In this work, a three-dimensional model geometry of 11 kV zinc oxide surge arrester was designed in finite element analysis and was applied to calculate the leakage current under normal operating condition and being verified with measurement results. The optimisation methods were used to improve the arrester design by minimising the leakage current across the arrester using imperialist competitive algorithm (ICA) and gravitational search algorithm (GSA). Findings The arrester design in reducing leakage current was successfully optimised by varying the glass permittivity, silicone rubber permittivity and the width of the ground terminal of the surge arrester. It was found that the surge arrester design obtained using ICA has lower leakage current than GSA and the original design of the surge arrester. Practical implications The comparison between measurement and simulation enables factors that affect the mechanism of leakage current in surge arresters to be identified and provides the ideal design of arrester. Originality/value Surge arrester design was optimised by ICA and GSA, which has never been applied in past works in designing surge arrester with minimum leakage current.

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“…However, the method of determining the phase‐shift angle is not explicitly stated in the literature, nor is there any theoretical derivation of the principle of this method. In 2016, M Khodsuz further proposed to apply FFT to his improved algorithm [11]. It conducts FFT on the grid voltage and full current signal to determine the phase‐shift angle and then processes each harmonic signal separately.…”

Section: Introductionmentioning

confidence: 99%

Improved method for extracting resistive leakage current of surge protectors

Sheng

2019

J. eng.

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

Cited by 22 publications

References 21 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

Design technique for leakage current reduction in surge arrester using gravitational search algorithm and imperialist competitive algorithm

Improved method for extracting resistive leakage current of surge protectors

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