Wind Power Ramps Driven by Windstorms and Cyclones

Lacerda, Madalena; Couto, António; Estanqueiro, Ana

doi:10.3390/en10101475

Cited by 6 publications

(6 citation statements)

References 27 publications

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“…Wind power ramps are usually characterised by their magnitude P , duration t, rate P / t, timing t 0 (central time or starting time of the event) and gradient (ramp-up or rampdown) (Sherry and Rival, 2015;Lange et al, 2010;Ferreira et al, 2010). However, defining a ramp event is a non-trivial task.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of intra-hourly wind power ramps at the wind farm scale and associated processes

et al. 2021

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Abstract. One of the main factors contributing to wind power forecast inaccuracies is the occurrence of large changes in wind power output over a short amount of time, also called “ramp events”. In this paper, we assess the behaviour and causality of 1183 ramp events at a large wind farm site located in Victoria (southeast Australia). We address the relative importance of primary engineering and meteorological processes inducing ramps through an automatic ramp categorisation scheme. Ramp features such as ramp amplitude, shape, diurnal cycle and seasonality are further discussed, and several case studies are presented. It is shown that ramps at the study site are mostly associated with frontal activity (46 %) and that wind power fluctuations tend to plateau before and after the ramps. The research further demonstrates the wide range of temporal scales and behaviours inherent to intra-hourly wind power ramps at the wind farm scale.

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Section: Introductionmentioning

confidence: 99%

Characterisation of intra-hourly wind power ramps at the wind farm scale and associated processes

et al. 2021

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“…However, a characterization and definition of these events is very difficult to obtain, since it varies from system to system, and it needs to be defined according to the technical characteristics of the electrical system in which it is inserted [5]. In this sense, unanimous definitions have not yet been established [13].…”

Section: Methodology 221 Wind Power Variability and Extreme Eventsmentioning

confidence: 99%

“…Regarding extreme events, special attention has been given to the so-called wind power ramps. In [11], a sequence of weather regimes was connected to the occurrence of those events, whereas in [13] the authors applied two different algorithms to identify, in an early phase, the existence of wind power ramps.…”

Section: Introductionmentioning

confidence: 99%

Identification of Extreme Wind Events Using a Weather Type Classification

2021

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The identification of extreme wind events and their driving forces are crucial to better integrating wind generation into the power system. Recent work related the occurrence of extreme wind events with some weather circulation patterns, enabling the identification of (i) wind power ramps and (ii) low-generation events as well as their intrinsic features, such as the intensity and time duration. Using Portugal as a case study, this work focuses on the application of a weather classification-type methodology to link the weather conditions with wind power generation, namely, the different types of extreme events. A long-term period is used to assess and characterize the changes in the occurrence of extreme weather events and corresponding intensity on wind power production. High variability is expected under cyclonic regimes, whereas low-generation events are most common in anticyclonic regimes. The results of the work provide significant insights regarding wind power production in Portugal, enabling an increase in its predictability.

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“…In these regions, the temperature contrast between the ocean and the land increases in the summer allowing to observe higher wind power production values during these months when compared to winter months, Figure 5b. In the winter, due to their location on the western coast, where most of the windstorms reach Portugal [55], significant wind power productions can also be observed. A decrease in the level of production is expected during the spring and autumn.…”

Section: Solar Pv Powermentioning

confidence: 99%

Exploring Wind and Solar PV Generation Complementarity to Meet Electricity Demand

Couto

Estanqueiro

2020

Energies

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Understanding the spatiotemporal complementarity of wind and solar power generation and their combined capability to meet the demand of electricity is a crucial step towards increasing their share in power systems without neglecting neither the security of supply nor the overall cost efficiency of the power system operation. This work proposes a methodology to exploit the complementarity of the wind and solar primary resources and electricity demand in planning the expansion of electric power systems. Scenarios that exploit the strategic combined deployment of wind and solar power against scenarios based only on the development of an individual renewable power source are compared and analysed. For each scenario of the power system development, the characterization of the additional power capacity, typical daily profile, extreme values, and energy deficit are assessed. The method is applied to a Portuguese case study and results show that coupled scenarios based on the strategic combined development of wind and solar generation provide a more sustainable way to increase the share of variable renewables into the power system (up to 68% for an annual energy exceedance of 10% for the renewable generation) when compared to scenarios based on an individual renewable power source. Combined development also enables to reduce the overall variability and extreme values of a power system net load.

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Wind Power Ramps Driven by Windstorms and Cyclones

Cited by 6 publications

References 27 publications

Characterisation of intra-hourly wind power ramps at the wind farm scale and associated processes

Characterisation of intra-hourly wind power ramps at the wind farm scale and associated processes

Identification of Extreme Wind Events Using a Weather Type Classification

Exploring Wind and Solar PV Generation Complementarity to Meet Electricity Demand

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