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Macro Scale Modelling of Wind Plants in Long Term Planning Studies - A Sri Lankan Case Study

Authors:

Anuradha Mudannayake ,

Ceylon Electricity Board, LK
About Anuradha
Eng., B. Tec. (OUSL), MSc(Moratuwa), AMIE(Sri Lanka), MIET,
Project Engineer, Broadlands Hydropower Project
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Rohan Lucas,

University of Moratuwa, LK
About Rohan
Eng. (Prof), BSc Eng(Cey), MSc(Manch), PhD(Manch), FIEE, CEng, FIE(Sri Lanka), IPEng, MCS(Sri Lanka),
Senior professor, Department of Electrical Engineering
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Tilak Siyambalapitiya

Resource Management Associates Pvt(Ltd), LK
About Tilak

Director

Eng. (Dr.), BSc Eng. Hon., PhD(Cambridge), CEng. MIE(Sri Lanka),

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Abstract

Harnessing Non Conventional Renewable Energy (NCRE) sources as small-scale embedded generation is rapidly increasing around the world. Modeling most NCRE based generation becomes an arduous task owing to their extremely volatile nature of resource availability along with present day economic, technical, social and environmental constraints. In this context, Sri Lanka is no exception. According to the energy policy-2006, energy share from NCRE is targeted to reach 10% of total electricity generation by 2015. According to National Renewable Energy Laboratory (NREL) report [1], wind energy potential in Sri Lanka is high compared with other technologies; mini hydro and biomass. Recent commissioning of about 30 MW of wind plants in Kalpitiya peninsula is an indication of investor interest in wind energy development for power generation. Therefore , modeling of wind power plants in long term planning can no longer be simple, such as representation as a lumped equivalent thermal plant with high Forced Outage Rate (FOR). Preparation of a macro scale wind plant model for Sri Lanka has not been undertaken before using the economic optimization tool Wien Automatic System Planning (WASP) package. This gap is addressed in this paper. Two models were initially prepared to be compatible with WASP. An in-depth study using (i) Modified Load Duration Curve method and (ii) Run of River (ROR) type hydro equivalent wind model based on five state probabilistic distributions, were investigated. Compatibility of new models was tested with WASP for dispatching as embedded generators. Considering the model simplicity, requirement of time & effort for sensitivity analyses and modifications, the later approach was concluded as the most appropriate for long term planning studies.


ENGINEER, Vol. 46, No. 01, pp. 11-20, 2013

How to Cite: Mudannayake, A., Lucas, R. & Siyambalapitiya, T., (2013). Macro Scale Modelling of Wind Plants in Long Term Planning Studies - A Sri Lankan Case Study. Engineer: Journal of the Institution of Engineers, Sri Lanka. 46(1), pp.11–20. DOI: http://doi.org/10.4038/engineer.v46i1.6900
Published on 23 Jan 2013.
Peer Reviewed

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