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Energies 2017, 10(10), 1536; https://doi.org/10.3390/en10101536

Probabilistic Load-Flow Analysis of Biomass-Fuelled Gas Engines with Electrical Vehicles in Distribution Systems

1
Electrical and Thermal Engineering Department, University of Huelva, 21004 Huelva, Spain
2
Department of Electrical Engineering, University of Jaén, 23071 Jaén, Spain
*
Author to whom correspondence should be addressed.
Received: 27 July 2017 / Revised: 26 September 2017 / Accepted: 28 September 2017 / Published: 3 October 2017
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

Feeding biomass-fueled gas engines (BFGEs) with olive tree pruning residues offers new opportunities to decrease fossil fuel use in road vehicles and electricity generation. BFGEs, coupled to radial distribution systems (RDSs), provide renewable energy and power that can feed electric vehicle (EV) charging stations. However, the combined impact of BFGEs and EVs on RDSs must be assessed to assure the technical constraint fulfilment. Because of the stochastic nature of source/load, it was decided that a probabilistic approach was the most viable option for this assessment. Consequently, this research developed an analytical technique to evaluate the technical constraint fulfilment in RDSs with this combined interaction. The proposed analytical technique (PAT) involved the calculation of cumulants and the linearization of load-flow equations, along with the application of the cumulant method, and Cornish-Fisher expansion. The uncertainties related to biomass stock and its heating value (HV) were important factors that were assessed for the first time. Application of the PAT in a Spanish RDS with BFGEs and EVs confirmed the feasibility of the proposal and its additional benefits. Specifically, BFGEs were found to clearly contribute to the voltage constraint fulfilment. The computational cost of the PAT was lower than that associated with Monte-Carlo simulations (MCSs). View Full-Text
Keywords: biomass assessment; distribution systems; electrical vehicle; olive tree pruning; probabilistic load flow; residual biomass biomass assessment; distribution systems; electrical vehicle; olive tree pruning; probabilistic load flow; residual biomass
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Ruiz-Rodríguez, F.J.; Hernández, J.C.; Jurado, F. Probabilistic Load-Flow Analysis of Biomass-Fuelled Gas Engines with Electrical Vehicles in Distribution Systems. Energies 2017, 10, 1536.

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