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A method for assessing customer harmonic emission level based on improved fluctuation method
2012 China International Conference on Electricity Distribution, 2012Raditional fluctuation method estimates the utility harmonic impendence by the ratio of the harmonic fluctuation of voltage to current at PCC, in which fluctuation samples are selected to improve average accuracy. However, the fluctuation filtering method may not increase estimation accuracy of individual sample.
Kun-long Song +3 more
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Advanced Materials Research, 2014
A novel method is used for assessing the harmonic emission level, which is based on the partial least-squares (PLS) regression with data envelopment analysis (DEA). Based on measuring the harmonic voltage and current at the point of common coupling (PCC) and removing the inefficiency data with DEA, regression coefficients are worked out through partial
Xiang Li, Min You Chen, Yong Wei Zheng
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A novel method is used for assessing the harmonic emission level, which is based on the partial least-squares (PLS) regression with data envelopment analysis (DEA). Based on measuring the harmonic voltage and current at the point of common coupling (PCC) and removing the inefficiency data with DEA, regression coefficients are worked out through partial
Xiang Li, Min You Chen, Yong Wei Zheng
openaire +2 more sources
2018 China International Conference on Electricity Distribution (CICED), 2018
The wind farm side harmonic impedance could not be neglected when assessing the wind farm harmonic emission level. Because of the low impedance characteristic of the wind turbine filter. This paper presents a new method to estimate the wind farm harmonic emission level at the point of common coupling (pee) based on improved covariance characteristic of
Zhenxin Zhong, Yue Zheng, Min Xiong
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The wind farm side harmonic impedance could not be neglected when assessing the wind farm harmonic emission level. Because of the low impedance characteristic of the wind turbine filter. This paper presents a new method to estimate the wind farm harmonic emission level at the point of common coupling (pee) based on improved covariance characteristic of
Zhenxin Zhong, Yue Zheng, Min Xiong
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2006 International Conference on Power System Technology, 2006
This paper proposes a new method, called PLSR (partial least-squares regression), which is used for assessing harmonic impedance and the harmonic emission level at the point of common coupling (PCC). Utilizing the signals of harmonic voltage and harmonic current measured synchronously at PCC, regression coefficients are worked out through partial least-
Xu Yonghai, Huang Shun, Liu Yingying
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This paper proposes a new method, called PLSR (partial least-squares regression), which is used for assessing harmonic impedance and the harmonic emission level at the point of common coupling (PCC). Utilizing the signals of harmonic voltage and harmonic current measured synchronously at PCC, regression coefficients are worked out through partial least-
Xu Yonghai, Huang Shun, Liu Yingying
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High-order harmonic emission from a three-level atom in a laser field
Journal of Modern Optics, 1999Abstract The spectrum emitted by a three-level atom in the presence of a weak laser field is given together with the population dynamics and the phase of the Fourier transform of the acceleration. Calculations show that the spectrum can be very different from that emitted by a two-level atom.
CALDARA, Pasquale, FIORDILINO, Emilio
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Tailoring the high-harmonic emission in two-level systems and semiconductors by pulse shaping
Journal of the Optical Society of America B, 2012The generation of specific high harmonics for an optical two-level system is elucidated. The desired emitted radiation can be induced by a carefully designed excitation pulse, which is found by a multiparameter optimization procedure. The presented mechanism can also be applied to semiconductor structures for which the calculations result in much ...
Matthias Reichelt +2 more
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Time dependence of the second harmonic emission spectrum of a two-level spin system
Solid State Communications, 1979Abstract The time dependence of the second harmonic emission spectrum of a two-level spin system, excited by a step-modulated radiation at double quantum resonance, is experimentally investigated in a dilute ruby sample.
R. Boscaino, F.M. Gelardi
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Applied Mechanics, Mechatronics and Intelligent Systems, 2015
Wei-zhong Jiang +3 more
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Wei-zhong Jiang +3 more
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Harmonic Emission by Smart LED Systems under Phase Unbalanced Conditions
International Conference on Industrial and Information Systems, 2023Light emitting diode (LED) lighting systems are widely used in dimming and color-changing applications. When an automated lighting control system is in use, there can be several combinations of dimming levels and colors of lighting fixtures in a given ...
Sarani Wijerathne +2 more
semanticscholar +1 more source