Journal ArticleDOI
A correlation method for detection of partial discharges in transformers
S. Jayalalitha,V. Jayashankar +1 more
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In this article, a correlation method is proposed for the location of partial discharge within a winding and experimental results on a lumped parameter model of a winding are shown to prove the feasibility of the method.Abstract:
A correlation method is proposed for the location of partial discharge within a winding. Theoretical simulations and experimental results on a lumped parameter model of a winding are shown to prove the feasibility of the method.read more
Citations
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Journal ArticleDOI
Frequency domain correlation technique for PD location in transformer winding
V. Jeyabalan,S. Usa +1 more
TL;DR: In this article, the limitation of time domain correlation method in locating partial discharge (PD) in transformer windings is found out, and frequency domain correlation with Gram Schmidt orthogonalization is proposed.
Journal ArticleDOI
Partial Discharge Localization in a Power Transformer: Methods, Trends, and Future Research
Mithun Mondal,G. B. Kumbhar +1 more
TL;DR: The techniques of PD localization used so far are compared, and their advantages and limitations are pointed out, to help develop the future technologies for PD localization thereby avoiding insulation damage.
Journal ArticleDOI
Localization of Partial Discharges Inside a Transformer Winding Using a Ladder Network Constructed From Terminal Measurements
TL;DR: In this paper, the authors employed terminal measurements to construct a physically realizable ladder network, where simulated responses obtained from the ladder network for signals of known pulse-widths at all locations were used as reference data.
Journal ArticleDOI
Virtual Instrument for Lightning Impulse Tests
A. Palani,V. Jayashankar +1 more
TL;DR: In this paper, an objective formulation of the impulse analysis problem from a signal analysis viewpoint is proposed, where the winding response is quintessentially that of a deterministic network to a finite energy signal, with breakdown and partial discharge being inherently nonlinear events.
Journal ArticleDOI
Wavelet power ratio signature spectrum analysis for prediction of winding insulation defects in transformer and shunt reactor
TL;DR: In this paper, a wavelet power ratio signature spectrum analysis is proposed to identify the short duration of partial discharge (PD) pulses of 170 ns and 30 ns within windings due to impulse voltage excitation.
References
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Proceedings ArticleDOI
The influence of winding type on the recognition of partial discharges [power transformer testing]
TL;DR: In this article, an instrumentation scheme for the acquisition of waveforms during the lightning impulse test on transformers is proposed, where three filters segregate the response into distinct frequency bands.
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Frequency domain correlation technique for PD location in transformer winding
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