Study on areal solar irradiance for analyzing areally-totalized PV systems

Otani, Kenji; Minowa, Jyunya; Kurokawa, Kosuke

doi:10.1016/s0927-0248(97)00050-0

Cited by 72 publications

(42 citation statements)

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“…For instance, smoothing of fast power fluctuation at a local scale (4 km) is reported by Otani et al [7] and even larger smoothing was obtained when taking into account 100 systems spread over Germany [8]. However, considering the same space scale, wind power presents a higher smoothing effect of power fluctuation.…”

Section: The Smoothing Of Power Fluctuation and The Natural Complmentioning

confidence: 89%

Integration of renewable sources in the electric system using Virtual Renewable Power Plants

Rodrigues

Estanqueiro

2011

11th International Conference on Electrical Power Quality and Utilisation

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Section: The Smoothing Of Power Fluctuation and The Natural Complmentioning

confidence: 89%

Integration of renewable sources in the electric system using Virtual Renewable Power Plants

Rodrigues

Estanqueiro

2011

11th International Conference on Electrical Power Quality and Utilisation

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“…The number of studies on the subject is significantly small and it has only been over the last few years when the study of the fluctuations has gradually taken on greater importance. In this way, irradiance fluctuations have been monitored and analysed in countries such as Germany [1], Japan [2], Belgium [3] and Australia [4]. On the other hand, as far as the study of power fluctuations is concerned, the number of studies made is even more limited.…”

Section: Experimental Set-upmentioning

confidence: 99%

Power output fluctuations in large PV plants

Marcos¹,

Marroyo²,

Lorenzo³

et al. 2012

REPQJ

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Abstract. The power generated by large photovoltaic (PV) plants is of an intermittent nature, due to cloud passage, which can create considerable fluctuations in output. Therefore, if the penetration of PV power in the overall electricity system is high enough, these fluctuations could have a serious effect on the quality and safety of the power supply. This article aims to characterise these fluctuations and to look at the smoothing effect of the PV plant size and that of the geographical dispersion of the PV plants.

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“…While adhering to the statistical approach and defining the root mean square of a high-pass filtered version of the data as the fluctuation factor of the time-series, Otani et al (1997) allude to employing the power spectral density as a mean of describing variability. Hence, spectral methods provide a different approach of describing variability in that, by analysing the frequency contents of the data, a much clearer picture is rendered in terms of the scales, or the inverse of frequency, at which variations in the SSI occur.…”

Section: Introductionmentioning

confidence: 99%

On the temporal variability of the surface solar radiation by means of spectral representations

2016

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Abstract. This work deals with the temporal variability of daily means of the global broadband surface solar irradiance (SSI) impinging on a horizontal plane by studying a decennial time-series of high-quality measurements recorded at a BSRN ground station. Since the data have a non-linear and non-stationary character, two time-frequency-energy representations of signal processing are compared in their ability to resolve the temporal variability of the pyranometric signal. First, the continuous wavelet transform is used to construct the wavelet power spectrum of the data. Second, the adaptive, noise-assisted empirical mode decomposition is employed to extract the intrinsic mode functions of the signal, followed by Hilbert spectral analysis. In both spectral representations, the temporal variability of the SSI is portrayed having clearly distinguishable features: a plateau between scales of two days and two-three months that has decreasing power with increasing scale, a large spectral peak corresponding to the annual variability cycle, and a low power regime in between the previous two. It is shown that the data-driven, noise-assisted method yields a somewhat more sparse representation and that it is a suitable tool for inspecting the temporal variability of SSI measurements.

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Study on areal solar irradiance for analyzing areally-totalized PV systems

Cited by 72 publications

References 0 publications

Integration of renewable sources in the electric system using Virtual Renewable Power Plants

Integration of renewable sources in the electric system using Virtual Renewable Power Plants

Power output fluctuations in large PV plants

On the temporal variability of the surface solar radiation by means of spectral representations

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