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131. Transformer Core Saturation Fault Analysis using Current Sensor Signals and Thermal Image Features
Year: 2023, Volume: 23, Number: 4
... , phenomena are challenging to differentiate in CT fault system faults, overvoltage and under frequency operations. signals potentially causing false detections or delayed The internal faults are due ... Measures for Better Use of asymmetric three-phase transformers serving unbalanced nonlinear Nanocrystalline Cores in Air-Cooled Medium-Frequency Transformer loads," IEEE Trans. Power Deliv., vol. 23 ...
Year: 2007, Volume: 7, Issue: 2
... cooperate in order to accomplish a specific is the lower reliability in consequence of radio frequency task. Unlike industrial WNs, which use standardized interferences. The range of ... . conditions. Attacks aiming denial of service can be Hardware techniques use so called frequency-hopping launched at any layer of an ad hoc network: jamming radio spread spectrum ...
Year: 2009, Volume: 9, Issue: 2
... and expressing ε and THD depending on ratio Figure 9. THD values depending on frequency of the MTD for k λ= I 0 I B, it follows ... [4] – [6]. On the other hand, for many radio-frequency applications, this trade-off between transconductance value and linearity can be avoided, if ...
Year: 2010, Volume: 10, Issue: 4
... by other 2D Denoising: Inter-Scale Orthonormal Wavelet Thresholding", IEEE WTs with better frequency localization like for example the Trans. Ima. Proc., vol.16, ... their [19] Oltean M., Isar A., "On the Time-Frequency Localization of the Wavelet Signals with Application to Orthogonal Modulation," time-frequency localization ...
Year: 2014, Volume: 14, Number: 3
... signal is distributed with intervals). This sampling interval provides a suitable level of frequency f. This spectral density is a discrete-frequency accuracy ( 0.18 – 0.22 ... ) for locating irregularities in LV 35 Advances in Electrical and Computer Engineering Volume 14, Number 3, 2014 cables. Additionally, the instrument transfers the discrete- ...
Year: 2018, Volume: 18, Number: 1
... The master grid forming generator is the geothermal emulator. This master generator sets the frequency and the voltage of the grid. In case the geothermal generator is unavailable ... Biomass Power: StartAdress, ushort Pbio MainForm RegisterQuantity) Set the frequency of void SetFrequency(string s, float geothermal/biomass MainForm frec); generator void ...
Year: 2020, Volume: 20, Number: 3
... peak)  c  Tlocal  neighboring R-peaks) and identify periods of high frequency rate. The second step is using the Hurst-exponent to classify where ECGdet( ... mother wavelet ψi,j (t) and the wavelet coefficients wcoef deciding the time-frequency localization properties of the resulted through successive filtering of the original input wavelet used ...
Year: 2014, Volume: 14, Number: 4
... ]. These pulses will exhibit Unfortunately, this method relies heavily on the wide frequency components spread over a large range after a bandwidth perturbation induced by the sharp ... not necessarily from all of them. For detection, Self-similarity, Signal denoising, Time-frequency example the web client data series collected at the network analysis border will preserve ...
Year: 2020, Volume: 20, Number: 1
... the standard deviation of the Gaussian curve, which is also related to the cut-off frequency of the filter. Equations (11) and (12) show that ... through whilst attenuating other unwanted frequencies. Typically, a σ below 1 eliminates the zero-frequency component, thereby resulting in a near-black image, whereas a σ above 1 ...
Year: 2014, Volume: 14, Number: 1
... clock sets the constant switching cycle controlled buck converters stability, in the situation when frequency and determines the moments when the transistor the integration capacitor discharging is performed through ... ] Z. Lai, K. M., Smedley, "A general constant-frequency pulsewidth 8#page-1, DOI:10.1007/s11071-011-0170-8. modulator and its ...
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