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A robust least square approach for forecasting models: an application to Brazil’s natural gas demand
Springer Science and Business Media LLC - Tập 11 - Trang 1111-1135 - 2019
The robust least square method has been introduced in the literature as a new parameter estimation technique to deal with the presence of data uncertainties. In this paper we propose to use the robust least square method combined with log-linear Cobb–Douglas model as an alternative for developing forecast models. We first extend the robust least square method to the case which allows uncertainties......
A new approach in maximum power point tracking for a photovoltaic array with power management system using Fibonacci search algorithm under partial shading conditions
Springer Science and Business Media LLC - Tập 7 - Trang 145-172 - 2016
This paper deals with maximum power point tracking (MPPT) of a photovoltaic (PV) system under partially shaded conditions and active power support to the grid with power quality improvement at the point of common coupling (PCC). The overall system also provides an efficient power management among the various power sources, i.e., photovoltaic system, battery, and grid. The proposed MPPT algorithm i......
A stochastic mixed-integer conic programming model for distribution system expansion planning considering wind generation
Springer Science and Business Media LLC - Tập 9 - Trang 551-571 - 2018
This paper presents a stochastic scenario-based approach to finding an efficient plan for the electrical power distribution systems. In this paper the stochasticity for the distribution system expansion planning (DSEP) problem refers to the loads and wind speed behavior. The proposed DSEP model consist the expansion and/or construction of new substations, installation of new primary feeders and/or......
Multi-usage hydropower single dam management: chance-constrained optimization and stochastic viability
Springer Science and Business Media LLC - Tập 8 - Trang 7-30 - 2015
We consider the management of a single hydroelectric dam, subject to uncertain inflows and electricity prices and to a so-called “tourism constraint”: the water storage level must be high enough during the tourist season with high enough probability. We cast the problem in the stochastic optimal control framework: we search at each time t the optimal control as a function of the available informat......
Joint production and energy supply planning of an industrial microgrid
Springer Science and Business Media LLC - - Trang 1-33 - 2024
We consider the problem of jointly optimizing the daily production planning and energy supply management of an industrial complex, with manufacturing processes, renewable energies and energy storage systems. It is naturally formulated as a mixed-integer multistage stochastic problem. This problem is challenging for three main reasons: there is a large number of time steps (typically 24), renewable......
The effects of bulk electricity storage on the PJM market
Springer Science and Business Media LLC - Tập 5 - Trang 677-704 - 2014
Recent advancements in battery technologies may make bulk electricity storage economically feasible. We analyze the value of two electrochemical storage technologies and traditional pumped hydropower storage in the 2010 PJM day-ahead energy market, using a reduced-form unit commitment model. We find that large-scale storage would increase overall social welfare in PJM. However, the annualized capi......
A new approach to optimize the operating conditions of a polymer electrolyte membrane fuel cell based on degradation mechanisms
Springer Science and Business Media LLC - Tập 4 - Trang 219-237 - 2013
Performance degradation remains as one of the primary limitations for practical applications of proton exchange membrane (PEM) fuel cells. The performance of a PEM fuel cell stack is affected by many internal and external factors, such as fuel cell design and assembly, degradation of materials, operational conditions, and impurities or contaminants. Performance degradation is unavoidable, but the ......
Network constraints in techno-economic energy system models: towards more accurate modeling of power flows in long-term energy system models
Springer Science and Business Media LLC - Tập 4 - Trang 267-287 - 2013
Power systems are subject to extensive structural changes as a result of the fact that the share of renewable energies in power supply will increase significantly within the next decades. This requires the transport of large amounts of electricity, e.g. from the North Sea to the large load centres. Moreover, the decentralized installations for the generation of electricity (e.g. PV) need to be int......
Recent advances on power distribution system planning: a state-of-the-art survey
Springer Science and Business Media LLC - Tập 4 - Trang 165-193 - 2013
The rise in installation/reinforcement and maintenance costs of power distribution systems enforces the planner to adopt an optimal strategy during system planning. The planning should be uch that the designed system should economically and reliably take care of spatial and temporal load growth, and service area expansion in the planning horizon. Mathematically, this planning is a multivariable mu......
Data analytics in the electricity market: a systematic literature review
Springer Science and Business Media LLC - - Trang 1-35 - 2023
In the last decade, data analytics studies have covered a wide range of fields across the entire value chain in the electricity sector, from production and transmission to the electricity market, distribution, and load consumption. It is essential to integrate and organize the wide range of current scientific publications to effectively allow researchers and specialists to implement and progress c......
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