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This paper proposes a sequential loading method, which finds the hourly changes of frequency and optimal load distribution between power stations. The method solves to minimize the aggregate cost in the electric power system (EPS). The method also calculates the surplus or deficit of an active power in EPS, hourly power flows of each transmission lines, active power losses in the networks. Computed...
Since its introduction, distributed generation (DG) has surely allowed the exploitation of otherwise unrecoverable energy resources dispersed on the territory, though posing a series of as yet unsolved problems connected to smart grid operation. One of these inconveniences is the automatic DG disconnection in weak network. Actually, for a DG system to be able to inject power into a grid, the voltage...
The high levels of energy produced by Distributed Generation (DG) may create some problems to the voltage control of transmission systems if a great amount of active power crosses transformers and autotransformers from lower to higher voltage level (reverse power flow). In addition DG is usually intermittent and often does not participate to the voltage regulation process. This situation may be accepted...
The high penetration of renewable energy generation has strongly modified the behavior of those users, or prosumers, that after shifting from passive receivers to active contributors, often aim to reach a zero net energy condition through a smart management of production, consumption and storage systems. A method for reducing energy consumptions of a Heating, Ventilation and Air Conditioning (HVAC)...
The paper describes a technological basis for dynamic actions targeted to an effective, real-time control of air conditioning systems in smart buildings with a focus on energy management. The proposed procedure could be extended to more complex systems, usually including a number of prosumer (producer and consumer) nodes, connected to a smart grid and remotely controlled by a Distributed System Operator...
This paper describes a new predictive algorithm that can be used to improve the intelligence of a prosumer node. Prosumers - which means the entities that are consumers and producers at the same time - play an important, active role within the context of smart grids. On the other hand, a smart grid is truly "smart" if all its nodes are smart, including prosumer nodes. The algorithm is based...
It is well known that network analyzers perform reliable estimations of the Total Harmonic Distortion (THD). A distorted signal is actually decomposed in real time into its harmonic components using the Fourier transform. The implemented algorithm requires a 200ms observation window in order to meet both the necessary accuracy and standard requirements. Though the adopted observation time is compatible...
A new kind of control system to remotely manage an LV switchboard is presented. The main feature of the system is an optimal load management that allows both to optimize end-use energy consumptions and increase the level of supply continuity. An interesting application of the switchboard lies in the management of LV installations connected to smart grids, where the consumer - also named “prosumer”-...
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