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The following topics are dealt with: smart power grid; energy management system; distributed power balancing; wide area monitoring and control; fault detection; distributed photovoltaic generators; advanced metering; power transformers; substation automated data analysis; electric vehicles; cognitive radio; wireless sensors communication; overhead transmission line monitoring; secure communication...
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In this work, we study the energy management system (EMS) in the customer domain of the Smart Grid. We discuss the desired features and design issues, highlight the characteristics and identify the challenges. To address the challenges, we propose the innovative framework of Pervasive Service-Oriented Networks (PERSON). The core idea is to utilize a heterogeneous network as the information infrastructure,...
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The FREEDM microgrid is a test bed for a smart grid integrated with Distributed Grid Intelligence (DGI) to efficiently manage the distribution and storage of renewable energy. Within the FREEDM system, DGI applies distributed algorithms in a unique way to achieve economically feasible utilization and storage of alternative energy sources in a distributed fashion. The FREEDM microgrid consists of residential...
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In this paper we apply the Singular Value Decomposition (SVD) analysis to examining the coupling structure of an electrical power grid in order to highlight opportunities for reducing the network traffic, by identifying what are the salient data that need to be communicated between parts of the infrastructure to apply a control action. Our main finding is that typical grid admittance matrices have...
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As increasing numbers of "smart" sensors and actuators are introduced into the electrical grid, the cyber security factor grows in significance, necessitating the implementation of information assurance controls for devices at all levels within the grid communications network. Determining the appropriate controls for any particular device first requires identifying its place within an established...
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The transfer from the current power grid to the power grid of the future implicates major changes for all stakeholders participating in the smart grid. Hence, utilities have to face several novel problems in terms of service provision. In this contribution, we examine two complementary views in the overall context of smart grids. We argue for a combination of those two views, based on ontology mappings...
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This paper introduces the concept of the Region Of Stability Existence (ROSE) and describes the framework for utilizing PMU data for computing of this region and operational margins. The approach presented in this paper is an automated process to continuously monitoring the transmission system in real-time environment by accurately calculating power system stability margins. Voltage constraints, thermal...
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The bulk power system faces many challenges as load growth continues to far outstrip new transmission capacity, utility operators are retiring in large numbers, and renewable sources of energy and microgrids with very different power characteristics must be integrated into electricity grids and be actively managed. NASPInet holds great promise to help improve the reliability, efficiency, and cyber-security...
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Fault localization in the nation's power grid networks is known to be challenging, due to the massive scale and inherent complexity. In this study, we model the phasor angles across the buses as a Gaussian Markov random field (GMRF), where the partial correlation coefficients of GMRF are quantified in terms of the physical parameters of power systems. We then take the GMRF-based approach for fault...
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In this paper, we explore the implementation of a smart monitoring system over a wireless sensor network, with particular emphasis on the creation of a solid routing infrastructure through the Routing Protocol for Low- power and lossy networks (RPL), whose definition is currently being discussed within the IETF ROLL working group. Our framework is based on a very lightweight implementation of the...
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The harmonization of CIM (IEC 61968/61970) and IEC 61850 standards is a major issue in the interoperability between smart grid devices, systems and applications. This paper describes how Ontology Matching methods, mainly developed for the Semantic Web, can be employed to solve the problems or mismatches that appear in this harmonization. The paper also includes a description of the ESODAT software...
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As the power system evolves into a smarter and more flexible state, so must the communication technologies that support it. A key requirement for facilitating the distributed production of future grids is that communication and information are standardized to ensure interoperability. The IEC 61850 standard, which was originally aimed at substation automation, has been expanded to cover the monitoring...
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We are developing a next-generation power grid in the low-carbon era, which operates and controls demand-side equipment as well as that on the power generation and transmission sides. For these operations and controls, a computer unit, called a customer gateway in this paper, exchanges data with devices in customer premises and those in this grid. To ensure interoperability for communications with...
