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Electro-thermal domestic heating systems represent excellent potential sources for demand response and demand side flexibility given the large amount of storage inherent in them. However, they must be modeled using an approach which adequately captures the detailed physics of the problem (in order to properly assess the different sources of inherent storage), and yet is simple enough to be generalizable...
Active Demand Response (ADR) can contribute to a more (cost-)efficient operation of and investment in the electrical power system as it provides the needed flexibility to cope with the intermittent character of renewables. One of the promising demand side technologies in terms of ADR are electric heating systems as they allow to modify their electrical load pattern without affecting the thermal energy...
This research examines optimal operation of microgrid systems. Microgrids are disaggregated from main transmission grid. Microgrids are able to integrate distributed renewable energy, take advantage of waste heat, provide higher power reliability, reduce electricity transmission loss, and decrease greenhouse gas emissions. The study considers solar power, wind power, biomass power, gas turbine, fuel...
The implementation of emission certificates in Europe in 2005 has lead to new uncertainties especially for power companies resulting in additional costs for the power generation. The introduction of certificates goes along with political conditions and objectives particularly in the European Union until 2020. In consequence, these regulations take influence on the power plant scheduling as well as...
Supplying a reliable, efficient, economic electrical service to all customers is the basic responsibility of utilities. However, increasing penetration of new customers in distribution grids as dispersed generation (DG), electric heating systems and electric vehicles (EV), makes conventional operation of energy supply systems difficult while meeting the aforementioned responsibility. Therefore, the...
According to operation characteristics of a microgrid with fluctuant energy, such as solar energy, wind energy and alike, a multi-objective economic dispatching model for microgrid is proposed. These objectives are to minimize the production cost, customer outage cost and emission pollution cost. Taking into account characteristics of the proposed model, the maximum fuzzy satisfaction degree method...
The aim of the presented research is to analyze prospective power supply scenarios for an exemplary Swiss region using a multiple-level model. The considered region is subdivided into its settlement units to form the levels. Each level comprises distinct conversion technologies to supply the load. The power supply is composed of various energy carriers, like electricity, gas and heat, in order to...
Planning of energy systems is confronted with dual pressures from economic development and environmental protection, and associated with various uncertainties. In this paper, an inexact energy system optimization model (IESOM) was developed, through integrating interval-parameter and mixed integer programming (IMILP) within an energy systems management framework. IESOM would minimize the total cost...
In this paper a model for the assessment of efficient energy generation portfolios is presented. The total energy output can consist of multiple energy carriers such as electricity, heat or chemical energy carriers. In order to take into account multiple aspects of performance and different types of incertitude influencing the long-term energy planning process, two different methods are combined....
In this study market opportunities for very smallscale (1-2kWe) micro-CHP (=muCHP) units in domestic dwellings in Flanders (Belgium) were explored. From all available muCHP technologies, the Stirling-based units seem the only ones to be very close to commercial market introduction, followed by (O)RC based units. With the scope limited to 5 years ahead, the total market potential has been estimated...
A novel methodology for economic evaluation of hydrogen storage for a mixed wind-nuclear power plant considering some novel aspects such as residual heat and oxygen utilization is presented in this paper. The simulation of the operation of the combined nuclear-wind-hydrogen system is discussed first, where the selling and buying of electricity, the selling of excess oxygen, and the selling of heat...
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