Results 11 to 20 of about 255,632 (300)
IEEE Access, 2021 Harmonic detection and control for power grids have always been major concerns for researchers. With the application of diverse semiconductor materials in power systems, numerous asymmetrical loads arise, resulting in increasingly poor performance of ...
Jianming Shi, Zhongmin Liu
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Optical Gas-Cell Dynamic Adsorption in a Photoacoustic Spectroscopy-Based SOF2 and SO2F2 Gas Sensor
Sensors, 2022 SO2F2 and SOF2 are the main components from the decomposition of insulation gas SF6. Photoacoustic spectroscopy (PAS) has been acknowledged as an accurate sensing technique.
Ying Zhang +3 more
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Islanding Detection in Microgrids Using Harmonic Signatures [PDF]
IEEE Transactions on Power Delivery, 2015 In recent years, there has been a growing interest in incorporating microgrids in electrical power networks. This is due to various advantages they present, particularly the possibility of working in either autonomous mode or grid connected, which makes them highly versatile structures for incorporating intermittent generation and energy storage ...
Merino, J. +3 more
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Applied Sciences, 2020 The current signal harmonic detection method(s) cannot reduce the errors in the analysis and extraction of mixed harmonics in the power grid. This paper designs a harmonic detection method based on discrete Fourier transform (DFT) and discrete wavelet ...
Guishuo Wang, Xiaoli Wang, Chen Zhao
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Harmonic detection device based on comb filter and subgroup algorithm
Gong-kuang zidonghua, 2017 :In view of problems of bad accuracy and real-time existed in harmonic and inter-harmonic detection algorithm, a harmonic and inter-harmonic detection algorithm based on comb filter and subgroup idea was proposed, and a harmonic monitoring device based ...
DAI Chaofan +4 more
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On detecting harmonic oscillations
Bernoulli, 2015 In this paper, we focus on the following testing problem: assume that we are given observations of a real-valued signal along the grid $0,1,\ldots,N-1$, corrupted by white Gaussian noise. We want to distinguish between two hypotheses: (a) the signal is a nuisance - a linear combination of $d_n$ harmonic oscillations of known frequencies, and (b) signal
Juditsky, Anatoli, B. +1 more
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A harmonic detection method for power network based on wavelet transform Mallat algorithm
Gong-kuang zidonghua, 2014 For the problem that traditional Fourier transform method caused big errors when analyzing power signals of power network under unstable running condition, a harmonic detection method for power network was proposed based on wavelet transform Mallat ...
LEI Ruhai, HAO Zhe
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Applied Sciences, 2023 To address the problem of harmonic pollution in power systems, a harmonic and interharmonic detection method based on the adaptive order and the dominant factor algorithms is proposed.
Junsong Gong, Sanjun Liu
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Polarization-resolved second-harmonic-generation optical coherence tomography in collagen [PDF]
, 2004 We describe a novel imaging technique, second-harmonic-generation optical coherence tomography (SHOCT). This technique combines the spatial resolution and depth penetration of optical coherence tomography (OCT) with the molecular sensitivity of second ...
Applegate, Brian E. +3 more
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Energies, 2017 Commutation failure is a common fault for line-commutated converters in the inverter. To reduce the possibility of commutation failure, many prediction algorithms based on alternating current (AC) voltage detection have already been implemented in high ...
Xinnian Li +6 more
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