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Microgrids can offer various benefits to electricity consumers, but these benefits must be compared with the corresponding investment cost for ensuring financial feasibility. This paper is focused on the problem of optimally sizing, from an economic perspective, the Distributed Energy Resources included in a DC Microgrid, determining the optimal mix of Distributed Generators and Energy Storage Systems,...
The increasing trend of people moving to urban areas and the associated urbanization process require facing challenges regarding city infrastructures capability to cover citizens needs for energy, water, transportation, healthcare. education, safety. The smart urban technologies represent an important contribution to the sustainable development of cities, making smart cities a reality. The concept...
For a long time it has been neglected the role the maritime transport sector in terms of atmospheric emissions, although navigation is considered to be at the level of the European Union, a major cause of air pollution: the international shipping industry is currently estimated to account: for up to 5% of world carbon emissions. That share could be 25% by 2050 — a significant contribution to climate...
Transmission expansion planning (TEP) is helping the system operator to decide the optimal solution for building new lines and in the same time to increase the reliability and safety of the existing power system. The proposed problem is a mixed-integer nonlinear programming problem (MINLP) and it is solved using stochastic programming. Stochastic programming is applied when uncertain environment occurs,...
The liberalization of electricity markets in Europe was a highly-debated topic in the last thirty years. Almost three decades after the start of the deregulation processes, performances obtained by the introduction of competition in the electricity markets are still difficult to be perceived by final consumers. Until now, the assumption that the deregulated electricity markets naturally generate lower...
This paper investigates the voltage fluctuations determined by industry perturbing loads in a power system, with and without a STATCOM device in operation. The monitoring campaign was carried on by simultaneously measuring the voltage fluctuations in various points of the supplying power system, for revealing each perturbing customer contribution, and the background flicker. During the measuring campaign,...
The DC grids supplying electric vehicles are starting to gain interest worldwide. The DC faults management represent an important design and exploitation issue in these networks. This paper proposes an electronic switch for DC networks supplying electric vehicles (EV). Tests of the proposed switch were carried on under DC faults occurrence in presence of EV. The control of the low voltage distribution...
In addition to the lowering of consumption, the smart grid of the future will be able to reduce the peak levels of demand through a more efficient allocation of consumption over the day. For this purpose, end users need to rely on energy monitoring and control systems that provide detailed information about how and when to use and indicate how actively to contribute to the reduction of peak demand...
The present paper deals with the results of one month monitoring campaign of operating regimes of an existing ac arc furnace facility and its impact on power quality. Synchronized measurements were carried on in different points of the supply system of the arc furnace facility. Different supply schemes of the electric arc furnace facility were proposed and implemented, monitoring the power quality...
Electric mobility has been identified as a priority area for the “European industrial renaissance” by the European Commission. A key element on an electrification strategy must be to go beyond ownership. Carsharing has grown twentyfold over the past decade with around 2 million Europeans now enrolled. The economics of electric cars, principally fixed, not variable costs, lend themselves to sharing...
The Smart City is one of seven priority measures identified by the European Commission to address the energy and environmental issues and Sustainable Urban Mobility, represented by the infomobility, Electric Vehicles (EVs) and public transport, it is one of the key topic.
An energy-informatic-centric smart campus represents a viable structure addressing to different groups of users, like: students, teachers/educators, researchers and technical administrators, using information and communications technology system interface for accessing various services and requiring real time information regarding university buildings energy consumption and production, air quality...
The rapid growth of the urban population is expected to further increase to 70% by 2050, therefore the demand for transport is growing exponentially and this has resulted in a cheap offer of transport systems that use yet fossil fuels, that have caused, especially in large urban agglomerations, major pollution problems, traffic congestion, oil demand [1].
This paper analyzes the optimized operation of smart campus on the electricity market for maximizing his overall profit. The smart campus has the character of a virtual power plant with distributed energy resources with stochastic power and dispatchable classical generating units. The load is represented by the campus consumptions which can be shifted daily to accomplish the desired goals. This smart...
This paper analyzes the optimized operation of a virtual power plant owner on the day-ahead market for maximizing his overall profit. The virtual power plant is composed of distributed energy resources with variable produced power, energy storage systems, and dispatchable classical generating units. The intermittent character of wind and solar irradiation is addressed using the forecasted production...
Photovoltaic technology allows to directly convert solar energy into electrical energy with clear advantages: no environmental impact during operation, reliability and durability of the systems, reduced operating costs and maintenance, ability to both supply remote customers and simply connect to the electrical network. This paper evaluates the performance of two photovoltaic systems: one fixed and...
The paper deals with magnetic field measurement, carried out by using a broadband and isotropic instrument. These measurements are characterized by a very high uncertainty values if compared with the ones usually related to other electrical measurements. For these reasons, if the measurements are performed to assess the exposure of human beings, these large uncertainty values imply a high risk of...
Light is essential to life, as well as enable us to perform visual tasks. The importance of good lighting is undeniable, as it provides an essential service to people in different types of environment. The innovation is changing the way of energy consumption; in particular, it offers completely new lighting solutions for a lifestyle comfortable and healthy. The aim of this paper is that to analyze...
The climate change is increasingly apparent and the need to be independent for the sourcing of energy sources has led to the establishment of the European Community financing schemes to support research and development of systems in place to decrease pollution and independence from fossil fuels. One way to catch up with greater conviction this scope is the production of energy at a large scale, using...
Electric mobility can be seen as the element capable of breaking the current model "non-sustainable" road transport. It is able to promote a "green revolution" for a smarter mobility and integrated with other sectors of the economy especially with the energy sector. The idea to integrate renewable energy sources, in this case photovoltaic system, with the electric mobility can...
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