Representation of wind power generation in economic models for long-term energy planning
Journal Title: Energetika - Year 2018, Vol 0, Issue 0
Abstract
The representation of wind power plants electricity generation in economic models for energy planning is problematic, since generation in wind power plants is variable and it is not possible to predict accurately enough wind fluctuations for more than a few days. Often, wind power plants generation patterns from a single historical year are repeated throughout the modelled time period. Typically, this method is used when analysing power system operation in hourly time intervals for all days in a year for each year. However, hourly time resolution is not feasible in large-scale models, which tend to require considerable amounts of computing power. Thus, some kind of time aggregation is needed. On the other hand, currently used methods for models with less than hourly temporal resolution are becoming inadequate because of increasing share of fluctuating electricity production from wind in total power generation. In this article, a methodology for evaluation of wind power plants stochastic electricity generation in power system development models is described. The methodology is based on evaluation of how much time single or multiple wind power plants generate a certain output range during a season or some time period within a year, modelling of output distribution for a typical day of the selected time period, and preparation of electricity output curves. These electricity output curves when modelling wind power plants in models with aggregated time allow to assess fluctuations in generation, observable regularities and enhance the objectivity of balancing power demand assessment, also ensure that electricity generated during a typical day corresponds to electricity generated during the selected time period. This methodology will help to determine the rational perspective power generation mix more accurately and make a better assessment of cost-effectiveness of wind power plants in economic models for energy planning, without significantly increasing the size of already large-scale models.
Authors and Affiliations
Eimantas Neniškis, Arvydas Galinis
Keywords
Related Articles
- EP ID EP392714
- DOI 10.6001/energetika.v64i1.3726
- Views 70
- Downloads 0
Power quality issues in smart grids with photovoltaic power stations
Problems of power quality and electric energy accounting often occur in networks with large pervasion of photovoltaic (PV) elements on rooftops of household and office buildings. In smart grids, including PV arrays elect...
Already the 15th Conference of Young Scientists on Energy Issues (CYSENI) at Lithuanian Energy Institute
Believe it or not, but the first steps of the conference of young scientists of Lithuanian Energy Institute (LEI) were done long time ago – back in 2002. It was based on the idea of having our own plat...
International MITHYGENE-ETSON benchmark
Lithuanian Energy Institute scientists participated in the international MITHYGENE-ETSON benchmark and provided simulations of hydrogen combustion.In the case of a severe accident in a nuclear power plant,...
Axisymmetric laminar flow of two-phase medium inside the system of two coaxial pipes
The problem of the axisymmetric laminar flow of a two-phase (liquid-gas) flow inside the infinite system of coaxial tubes with a circular cross-section located vertically is considered. Analysis of the analytical solutio...
Representation of wind power generation in economic models for long-term energy planning
The representation of wind power plants electricity generation in economic models for energy planning is problematic, since generation in wind power plants is variable and it is not possible to predict accurately enough...