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The next-generation smart grid will rely highly on telecommunications infrastructure for data transfer between various systems. Anywhere we have data transfer in a system is a potential security threat. When we consider the possibility of smart grid data being at the heart of our critical systems infrastructure it is imperative that we do all we can to ensure the confidentiality, availability and...
The power systems sector is undergoing a complete overhaul to a smarter system, in which the consumers are becoming prosumers. Energy storage is a vital component of the smart grids that are currently being built around the world. These grids are designed to improve the reliability of electricity transmission and distribution, facilitate the integration of renewable energy generators and allow long...
This paper describes a fridge-freezer smart load model, which responds to external signals from the wholesale electricity market to support grid operations while switching the fridge-freezer on and off to maintain optimum operations for the owner. The key parameters of the model are the appliance dimensions, thermal mass, the fridge and freezer thermal time constants and the compressor power consumption...
The penetration of wind energy in power system is growing dramatically world wide. Consequently, there are some new challenges appeared on power system. Smart demand technology involves new communication technologies to make sure actions can be fast enough to prevent instability situation of generators. Due to the high level of renewable energy in power system, flexible demand becomes a future option...
The worlds' energy demand keeps increasing. To address this demand of energy growth intelligent energy management, monitoring and controlling play a big role besides increasing the energy generation capacity. The future smart grid expected to accommodate and integrates widely dispersed energy sources and distributed energy generations. Advanced information and communication technologies, smart meters...
Changes in the wholesale electricity market alongside the difficulties in upgrading the transmission system have increased the complexity of power networks operations. This fact has placed heavier demands on developing new technologies to manage power systems reliably. Driven by the growing smart grid applications, ICT infrastructures are becoming more important for the communication of monitoring,...
This paper introduces on a probabilistic model to automatically generate photovoltaic production profiles for a given geographical region and future scenarios for deployment of renewable energy resources. The model for these profiles uses local properties of buildings, demographic statistics, and historical weather data. Sub-models are calibrated with actual PV data from a smart grid pilot site in...
The paper discusses the project, design and overall performance of a high efficiency microcogenerator prototype of 20 kW of electric power and about 40 kW of thermal power, suitable for small industrial or residential grid-connected applications, fuelled by natural gas or LPG. This unit has been conceived specifically as a local integrated energy platform having in durability, high global efficiency...
The availability of electricity is fundamental to modern society. It is at the top of the list of critical infrastructures and its interruption can have severe consequences. This highly important system is now evolving to become more reliable, efficient, and clean. This evolving infrastructure has become known as the smart grid; and these future smart grid systems will rely heavily on ICT. This infrastructure...
Switching, fault currents, lightning and other transient phenomena produce electromagnetic fields that may disturb the normal functioning of a high voltage power substation. With the advent of the ‘smart grid’ — where electronic control and communication equipment are integrated within the substation — understanding of the electromagnetic environment and the resulting interferences is becoming very...
Smart Grid has been characterized as the next generation power grid in which modern Information and Communication Technologies (ICT) will improve control, reliability and safety. Although the adoption of generic off-the-shelf ICT in Smart Grid provisions indisputable advantages and benefits, it raises several issues concerning the reliability and security of communications — the core infrastructure...
Safe operation of the electric power system relies on conventional power stations. In addition to providing electrical energy to the network, some power stations also provide a number of ancillary services for the grid stability. These services could potentially be provided by the growing number of electric vehicles — faster and with better precision, using Vehicle-to-Grid technology. This paper explores...
Within the EU Directive 20-20-20, which imposed a decisive action towards renewable energy adoption within electric power systems, this change brought a series of issues for the electric power systems, like losses increase, reliability alteration and power quality depreciation. The power generation of grid-connected PV plants is increasing continuously all over the world reaching values of hundreds...
Various Smart Grid (SG) technologies and concepts are currently under investigation, driven by the goals of energy transition policies towards future sustainable, reliable and affordable electricity supply systems. This paper presents an approach for modeling the interaction between the Smart Grid and Building Energy Management Systems (SG-BEMS), using Multi Agent Systems control. The interaction...
Communication networks consist of a crucial tool for the implementation of Smart Grids. The different kinds of data flowing in a Smart Grid have different latency and reliability requirements. Phasor Measurement Units (PMU) are becoming increasingly widespread like instruments to monitoring of electrical distribution systems. The use of this equipment has severe restrictions on bandwidth, latency...
In contingency situation, the ability to self-healing plays an important role on reducing the time to restore the energy supply. The increasing use of remote controlled equipment in power systems leads the development of more efficient techniques for automatic restoration of power supply, being particularly important in Smart Grid applications. This paper presents a methodology and system for automatic...
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