35,246 research outputs found
The impact of domestic plug-in hybrid electric vehicles on power distribution system loads
The market for Plug-in Hybrid Electric Vehicle (PHEVs) is expected to grow significantly over the next few years and a number of new products are soon to come onto the market, such as the Toyota Prius plug-in version, . The charging demand of wide-scale use of PHEVs may have a significant impact on domestic electricity loads and could risk of overloading the power system if appropriate charging strategies not applied to prevent this. A Monte Carlo Simulation (MCS) model of domestic PHEV use and availability has been developed based on probabilistic characterisations obtained from UKTUS and quantifies charging demand of PHEVs as a function of time of day. The MCS model has been developed in order to simulate the impact on the electricity distribution system. This article also discusses the potential for responsive battery charging load from PHEVs
Wireless Node Cooperation with Resource Availability Constraints
Base station cooperation is a promising scheme to improve network performance
for next generation cellular networks. Up to this point research has focused on
station grouping criteria based solely on geographic proximity. However, for
the cooperation to be meaningful, each station participating in a group should
have sufficient available resources to share with others. In this work we
consider an alternative grouping criterion based on a distance that considers
both geographic proximity and available resources of the stations. When the
network is modelled by a Poisson Point Process, we derive analytical formulas
on the proportion of cooperative pairs or single stations, and the expected sum
interference from each of the groups. The results illustrate that cooperation
gains strongly depend on the distribution of available resources over the
network.Comment: submitted, 12 pages, double-column, 7 figures, 8 sub-figures in tota
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