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Going forward to reach infrastructure grid by incorporating cluster of renewable and distributed energy sources, storage systems, different kinds of loads, in a huge dimension of information, communication and control technologies, has been established concept of “Smart Grid”. By jointly considering local distributed generation, i.e. two small wind turbines, PP load, i.e. fast charger of electrical...
In this paper, we propose a method that uses model predictive control (MPC) to predict photovoltaic (PV) power generation, plan for the electricity demand in a building using the predicted value, and apply it online to correct the prediction error. First, we construct the regression model using a PV experimental unit and past data obtained from the Meteorological Agency. Next, we predict the PV power...
Due to the increasing concern for greenhouse gas emissions and fossil fuel security, electric vehicles (EVs) have attracted much attention in recent years. EVs can aggregate together constituting the vehicle-to-grid system. Coordination of EVs is beneficial to the power system in many ways. In this paper, we formulate a novel large-scale EV charging problem with energy trading in order to maximize...
One of the foundations of the Smart Grid is the real-time information and data exchange between all of its components, facilitated by the extended application of smart metering and information technologies. Advanced control functions integrated with the complicated and slow-dynamic electricity grid, will necessitate the use of an electricity buffer in order to maintain balance and stability at all...
This paper presents the impact study of plug-in electric vehicles (PHEVs) on a power distribution system and investigates how it would affect the distribution systems from different perspectives. PHEVs are modelled as storage energy systems in which its dispatch mode will follow the load shape patterns for charging behavior. The IEEE 37 test system with PHEVs is simulated in OpenDss, and a control...
Ultracapacitors have a unique positioning among various energy storage devices. Their features can be leveraged for a large number of industrial applications. This paper presents some of the innovation, design and system integration initiatives that have led to pioneering practical industrial applications of ultracapacitor technology in India in various domains such as Railways, Diesel Generators...
Flexibility from residential loads presents an enormous potential to provide various services to the smart grid. In this paper, we propose a unified hierarchical framework for aggregation and coordination of various residential loads in a smart community, such as Thermostatically Controlled Loads (TCLs), Distributed Energy Storages (DESs), residential Pool Pumps (PPs), and Electric Vehicles (EVs)...
We analyze two contractual frameworks for regulation services with battery-based energy storage: the SoC- and energy-neutral contracts. Vis-a-vis the existing contractual framework, the new contracts constrain the operator to generate only SoC- and energy-neutral regulation signals within a contract duration. For both contracts, we propose algorithms to maximize the battery operator's reward during...
The traditional ac power system is challenged by the increased amount of distributed energy resources. Enormous changes and investments are necessary in order to achieve an ac smart grid capable of coping with the challenges introduced. In dc, solutions seem to be more straightforward since most of the distributed energy sources and most of the loads connected to the low voltage grid operate with...
Energy harvesting is emerging as a promising approach to improve the energy efficiency (EE) and to extend the life of wireless networks. This paper focuses on energy-efficient transmission power allocation techniques for a point-to-point communication channel, equipped with a fixed-power battery, as well as a harvest-use battery. Using the fact that the harvested energy does not consume from the fixed...
The growing oil demands and the economic concerns have inspired the governments, car manufactures and the environmentalist to promote the manufacturing of Electrical Vehicles (EV). With developments in the power grid and advancements in the vehicle technology the EVs can contribute to the grid by selling or buying power from the grid. For the effective and efficient use of the V2G there is a major...
This paper investigates the scheduling problem of an intermediary charging station with multiple electric vehicles (EV) in real-time electricity pricing environment. A charging aggregator (CA) is in charge to coordinate EVs' charging so that all EVs' requirements are met and meanwhile the total social cost is minimized. Besides, a new charging mechanism named Vehicle-to-Vehicle (V2V) is proposed to...
This paper considers the problem of charging station pricing and station selection of plug-in electric vehicles (PEVs). Every PEV needs to select a charging station by considering the charging prices, waiting times, and travel distances. Each charging station optimizes its charging price based on the prediction of the PEVs' charging station selection decisions, in an attempt to maximize its profit...
We propose a method for reducing the communication requirements for electric vehicle (EV) charging control based on Vehicle-Originating-Signals (VOS). The original VOS approach requires a message exchange between every EV and the aggregator for every time step. This can cause the load on communication systems to increase, especially as the number of EVs increases and the control intervals become more...
Electric Vehicle (EV) drivers have an urgent demand for fast battery refueling methods for long distance trip and emergency drive. A well-planned battery swapping station (BSS) network can be a promising solution to offer timely refueling services. However, an inappropriate battery recharging process in the BSS may not only violate the stabilization of the power grid by their large power consumption,...
With the uptake of electric vehicles (EVs) promoted by many governments, the impact of electric vehicles on electricity grids will become significant in the near future. In Australia, charging a typical EV battery puts the same demand per day on the grid as an average household, which could lead to a sizeable increase in peak demand. However, the negative impacts of EVs can be mitigated if their charging...
The rising penetration of intermittent power sources such as solar photovoltaic systems is a concern for electric utility operators, and techniques to mitigate the effect of power variability have been proposed. One method is to use electric vehicle (EV) batteries, connected through fast bidirectional chargers, as short time scale storage devices for intermittent power sources. This allows the high...
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