Wind-Lens

Research activities

Optimization of Shrouded Wind Turbines with Wind-Lens Technology
Test with high turbulence and pitch angle

Projects

Small wind turbines are used throughout the developed and developing world and are primarily used in rural or remote settings in the domestic and international markets. Small wind turbines can be used to power communities, businesses, schools, clinics, single households, farms and a variety of equipment. The goal of this project is to improve the energy production of small wind turbines by increasing wind velocity at the turbine blades through the design of a shroud attachment. The design process involves the analysis of various wind lens with and without a broad-ring rim at the exit periphery. Computational fluid dynamic modeling is used to analyze the effect of shroud features on velocity and pressure fields. The next generation diffusers will be developed with improved safety and reduction of acoustic noise.

Tools

Facility

Pre Processing Tools – DOE

Mesh Tools – ICEM

CFD Tools – ANSYS CFX

Post Processing Tools – DOE, Statistica

Contacts

PhD Giorgio Pavesi

Associate professor
Group: TURBOMACHINERY

+39 049 827 6768

giorgio.pavesi@unipd.it

Orcid Profile

Publications

2021

Cavazzini, Giovanna; Benato, Alberto; Pavesi, Giorgio; Ardizzon, Guido

Techno-economic benefits deriving from optimal scheduling of a Virtual Power Plant: Pumped hydro combined with wind farms Journal Article

In: Journal of Energy Storage, vol. 37, iss. May 2020, pp. 102461, 2021, ISSN: 2352-152X.

Abstract | Links | BibTeX | Tags: Pumped hydro storage, Renewable integration, Virtual Power Plant, Wind, Wind energy, Wind-hydro integration

@article{Cavazzini2021c,

title = {Techno-economic benefits deriving from optimal scheduling of a Virtual Power Plant: Pumped hydro combined with wind farms},

author = {Giovanna Cavazzini and Alberto Benato and Giorgio Pavesi and Guido Ardizzon},

url = {https://www.sciencedirect.com/science/article/pii/S2352152X21002103 https://doi.org/10.1016/j.est.2021.102461},

doi = {10.1016/J.EST.2021.102461},

issn = {2352-152X},

year  = {2021},

date = {2021-01-01},

urldate = {2021-01-01},

journal = {Journal of Energy Storage},

volume = {37},

issue = {May 2020},

pages = {102461},

publisher = {Elsevier Ltd},

abstract = {Wind and solar are renewable sources characterized by a great potential but a variable and unpredictable nature. Characteristics that provoke mismatch between power supply and demand which in turns are the source of network control issues. Problems manageable with the installation of large-scale energy storage like Pumped Hydro Energy Storage (PHES). To this purpose, the paper presents a techno-economic analysis for assessing the benefits deriving from the hybridization of a seawater PHES (sPHES) plant with an in-operation wind farm. Plants work as a Virtual Power Plant (VPP) instead of two separate unit. The hybridization aims to avoid the unbalances of the wind farm, having negative impact on both the grid and the wind farm owner itself. The unbalances cause unpredictable deviations from the predicted production and, hence, power production fluctuations faced by the grid with curtailments and/or calls in operation of fossil-fuelled power plants. A VPP techno-economic optimization on a daily bases is performed using the ASD-PSO algorithm while the optimization aim is the revenue maximization. Results show that a VPP composed by a sPHES and a wind farm and with a single owner, is able to manage the wind farm production, improving the revenue of 6.8% compared to plants acting separately on the market. The VPP approach is also convenient in the case of a joint venture between the plants owners. But, in this case, the revenue is increased only of 0.4% compared to plants working separately. Finally, results also highlight that, in the Italian electricity market, a sPHES plant alone is not able to generate sufficient revenue to guarantee a reasonable payback time while coupling it with a wind farm increases incomes and working days and avoid cost and grid issues in managing the unpredictable wind farm production.},

keywords = {Pumped hydro storage, Renewable integration, Virtual Power Plant, Wind, Wind energy, Wind-hydro integration},

pubstate = {published},

tppubtype = {article}

}