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A large penetration of renewable energy sources (RES) characterizes the next generation power grid. Yet the intermittent nature of such resources introduces new challenges in the power grid. In this paper, we explore the employment of flywheels to smooth the output power of a fluctuating energy resource. We introduce an energy management approach that is based on moving average (MA) and linear programming...
The emerging smart grid paradigm enables more efficient use of energy through optimizing the local grid operation. Conservation Voltage Reduction (CVR) is an application which aims at reducing the power consumption by decreasing the voltage level. Another important application is the Volt Ampere Reactive (VAR) control which aims at flattening the voltage profile and improving the power factor, which...
Specialists generally agree that Distributed Energy Resources (DERs) will play a key role in the next generation power systems. Photovoltaic (PV) solar panels are very important energy conversion methods, yet they suffer from low energy conversion efficiency, availability issues and fluctuating output. Photovoltaic/Thermal (PV/T) has been introduced as a way to increase the efficiency of the system...
Long Term Evolution (LTE) represents the next generation mobile telecommunication networks and has potential to enable new applications that have stringent Quality of Service (QoS) requirements. Several smart grid applications such as Phasor Measurement Unit (PMU)-based state estimation applications require low delay data communication. In this paper we add QoS capabilities into the LTE core network...
Smart meters are a crucial part of the smart grid, yet they arise several privacy concerns. The fine-grained consumption readings, can expose information about the household such as types of devices inside the house. In this paper we introduce two methods which enable a household to hide private issues. The first method, which is called One Level Consumption (OLC), tries to exploit demand response...
Simulation tools are an essential component of any emerging technology. In this paper we present SGsim, a framework to simulate different applications in the context of smart grid. The framework supports real time simulation. Therefore it is possible to evaluate time-critical applications such as real time monitoring and control. The framework combines two main simulators (1) OMNeT++, a discrete event...
New services and tools are emerging for advanced operation of next generation power grid. In this paper we introduce two of these services that can improve the operation of a power grid with distributed energy resources. Firstly, we explored the benefits of employing optimization approaches to enhance the profit of a power system that includes a Photovoltaic park, Wind Energy Plant, and Combined Heat...
Motivated by the decreasing costs of distributed energy resources and energy storage technologies, the increasing costs of electricity for households and the decreasing benefits of feed-in tariff, new strategies for power management inside a house are required. The two-way flow of information and power in smart grid creates new opportunities, services and applications in the next generation power...
This paper proposes a methodology for optimal power management in a house with photovoltaic cells and battery storage. The proposed method exploits the day-ahead electricity market to enhance the profit of a household. An hourly-discretized optimization algorithm is proposed to identify the optimum daily operational strategy to be followed by the photovoltaic system, provided that a forecast for solar-power...
Communication will play a significant role in the evolving smart grid which will allow services such as self-healing, real-time demand response and efficient use of energy. Due to the large number, distributed and more importantly intermittent nature of energy resources (e.g. wind and solar plants), smart grid will rely heavily on communication for super-fast balance between electricity supply and...
Smart grid, which is a set of enabling technologies, is seen by experts as very promising vision that has the potential to encounter the challenges of next-generation power grid. Smart grid consists mainly of power and communication networks, therefore investigating new methods and innovations in smart grid requires coupling these two worlds together. Development and evaluation of complex smart grid...
Decentralized and self-organizing mechanisms present promising approaches to deal with the massive amount of data generated by different components in the smart grid. In this work we present a self-organized approach that is able to take decisions locally and in a distributed way. Our approach distinguishes between an infrastructure level and a decision level. The middleware processes running on the...
Virtual position-based routing protocols have many attractive characteristics for wireless sensor networks. Typically, such protocols use a proactive scheme for updating routing tables. Because sensor networks can have very low data rate, sending periodic beacons to update routing tables can be very expensive. Instead, reactive approaches might be more appropriate in such scenarios. MANET-inspired...
We present the Virtual Cord Protocol (VCP), which exploits virtual coordinates to provide efficient and failure tolerant routing and data management in sensor networks. VCP maintains a virtual cord interconnecting all the nodes in the network and which, operating similar to a Distributed Hash Table (DHT), provides means for inserting data fragments into sensor nodes and retrieving them. Furthermore,...
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