The prospect of Smart Grid (SG) is becoming a reality in the recent years, covering different areas like smart metering, demand side management, or distributed generation. Communications play a central role in the SG architecture, because the power utilities need to collect important information to make optimal decisions for efficient power generation, transmission and distribution. This paper discusses the state-ofthe-art of narrow-band high-speed power line communications (PLC) -a promising communication platform for SG which offers advantages in coverage, costs and availability. Further, the paper presents an overview of DLC+VIT4IP (Distribution Line Carrier: Verification, Integration and Test of PLC Technologies and IP Communication for Utilities) a EU funded project under the 7th Framework Programme (FP7) that aims to extend the existing PLC technologies by developing efficient transport of IPv6 protocol, automatic measurement, configuration and management, and security. In addition, the project is exploiting frequency ranges up to 500 kHz, to support systems serving larger smart grid applications.
In this paper we analyze the current deployment of the smart metering by the utilities across the European continent, which is dictated by the EU Directives (2009/72/EC and 2009/73/EC). First we discuss the rollout of smart metering in Europe and the initial finding about the deployed communication technologies. In a second phase, we focus on the position of the Power Line Communication (PLC) in the strategy of power utilities.
This paper describes migration strategies in optical networks. It is expected that the conversion of current transport networks (IP/MPLS over SDH) into more packet oriented (IP/MPLS over Ethernet) technologies will result in significant cost savings for network operators. The state space of a migrating network can be modeled as a directed graph. To find the optimal migration path within this state oriented graph, several approaches, such as the Incremental Migration and the All-Period Migration can be used. Current research results regarding cost development and resource utilization in layer 1 and layer 3 are presented in this work. The effects of several planning techniques within such uncertain environment, like routing and grooming, on the total cost development are discussed, too.
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