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This paper introduces a risk-based method to optimize the planning of power systems. This works uses the formulation of Energy Hub previously presented in the literature, as an interface among energy producers, consumers and the transportation infrastructure. Risk factors such as demands, operating and maintenance cost or power cost are considered in the optimization of the system. Mitigation actions...
This paper analyzes prospects in future energy networks to meet expected demand with a multi-carrier energy system in dependence of storage power. We describe solution approaches to solve a multi-period optimization model that combines different energy storages within a network of clusters of local energy converters and storages, so called “Energy Hubs”. The planning of the Energy System is tested...
Due to technical constraints of major incidents related to connecting distributed green sources with the public grid, we propose, in urban areas, a semi-isolated and safety system for self-feeding of buildings equipped with renewable electricity. With an aim of elimination of multiple energy conversions, a direct current (DC) network distribution is considered. The semi-isolated and safety DC network...
This paper describes a wave-to-wire model of an array of wave energy converters (WECs) developed in MATLAB/Simulink. The model has been used to study the effects of connecting a 1MW wave farm to a weak, rural electricity network. Voltage quality issues are examined and methods by which these impacts can be mitigated are discussed. The operation of the wave farm using four different controllers used...
High force of sea waves is a huge renewable energy resource and sea waves, will play an important role in tomorrow's electricity production. This paper presents a new method for converting sea wave energy to continuously crank shaft motive force by a new apparatus named engine for producing energy from sea waves. There by, this apparatus can be used for producing AC electricity from sea waves, which...
The optimization of combined electricity and natural gas systems is addressed in this paper. The two networks are connected via energy hubs. Using the energy hub concept, the interactions between the different infrastructures can be analyzed. A system consisting of several interconnected hubs forms a distributed power generation structure where each hub is controlled by its respective control agent...
Deployment of PHEV will initiate an integration of transportation and power systems. Intuitively, the PHEVs will constitute an additional demand to the electricity grid, potentially violating converter or line capacities when recharging. Smart management schemes can alleviate possible congestions in power systems, intelligently distributing available energy. As PHEV are inherently independent entities,...
The paper proposes a novel power conversion system for Universal and Flexible Power Management (UNIFLEX-PM) in Future Electricity Network. Its structure is based on a back-to-back three-phase AC-DC 7-level converter; each AC side is connected to a different PCC, representing the main grid and/or various distributed generation systems. Effective and accurate power flow control is demonstrated through...
While the CMOS analog circuits can be designed with the minimum-gate-length of the fabrication process in the alpha-power law MOSFET model, the length of a MOSFET gate has been chosen to be a larger scale than the minimum-gate-length in the conventional Shockleypsilas square model. In this paper, we describe a 6-b 100 MSPS CMOS current steering digital-to-analog converter (DAC) with the alpha-power...
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