2005 · 73 citations · 4 references
EngineeringElectrical EngineeringCircuit TheoryEnergy SystemsPower ElectronicsConverter TopologiesDc-dc ConvertersDistributed Energy ResourcesDistribution Network DesignPower System DesignPower SystemsDirect Current Distribution SystemsDistributed GenerationElectrical Power SystemsElectrical System SafetyElectricity DistributionPower ConvertersPower Distribution NetworksPower Electronic Converters
End‑user concern over power quality, widespread use of electronic converters, and the need to integrate distributed generation and storage have spurred interest in adopting a DC public distribution system. The authors propose extending the DC section, already present in many devices, distributed generation systems, and UPS, to the LV public distribution level. They analyze several circuit configurations from technical and economic perspectives to evaluate this extension. The analysis demonstrates that a DC‑based LV network can form a high‑quality electric island, reduce converter complexity, increase energy transport capacity, enhance electrical safety, and is validated by simulation results. The study was carried out under the Ricerca di Sistema activity (DM 28/02/2003).
The attention of the end users to the electric power quality problem, the widespread use of the electronic power converters and the need to integrate the new distributed generation and storage systems have increased the interest in considering a public distribution system in direct current. The main idea is to extend the DC section, nowadays present in many electric devices, distributed generation systems and uninterruptible power supplies, at the level of LV public distribution. In this way it would be possible to create an high quality electric island that achieves also the advantages of the number and the complexity reduction of the power converters connected to the distribution network and a greater energy transport capacity with the same conductors [1]. In the present paper some possible circuital configurations are analyzed both from the technical and the economical points of view. Moreover, some remarks related to electrical safety have been presented. Finally, some simulation results are given. This paper was developed within the activity Ricerca di Sistema (DM 28/02/2003).
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