Browsing by Author "Anduaga, Jon"
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Item Architecture of a microgrid energy management system(2011-03) Jimeno, Joseba; Anduaga, Jon; Oyarzabal, José; De Muro, Asier Gil; POWER SYSTEMS; POWER ELECTRONICS AND SYSTEM EQUIPMENTIn the framework of deregulated electricity markets, distributed generation and load management are emerging as new technologies. In this context, the microgrid concept adds value to distributed energy resources (DER) by aggregating them into autonomous grids that provide high levels of efficiency, security and controllability. In order to achieve its functions, a microgrid requires a control system in charge of operating the elements in it in an optimal way while the required quality parameters are fulfilled. This paper describes the general architecture of a microgrid energy management system (EMS) based on multi-agent system (MAS) technologies. MAS technologies are considered to be very well suited to systems that require plug and play capabilities, robustness, heterogeneous device integration, high scalability and extensibility. All of which are essential characteristics of a microgrid EMS. This paper also describes the implementation of a secondary control system based on the microgrid EMS architecture developed. This system is in charge of maintaining microgrid frequency and power exchange with the main grid close to predefined values. This is achieved in a way in which generation and consumption resources are optimally dispatched and able to operate in both grid connected and islanded modes. Finally, the control system developed is tested in an actual microgrid in order to assess its performance and demonstrate its applicability.Item Development of portable microgrids to increase flexibility in grid operations(2020) Vilá, Cristina; Martínez, María; Palacios, Fernando; Anduaga, Jon; García, Santiago; García, Eduardo; POWER ELECTRONICS AND SYSTEM EQUIPMENT; POWER SYSTEMSI-DE has assessed the feasibility of a 'Portable Microgrid', a system that aims to reduce the environmental impacts of diesel generators (DG) operation in cities, whilst maintaining the cost-efficiency of the system. A range of scenarios that combine service duration, uses per year and i-DE normalised transformer's rating have been defined. The HOMER software has been used to run these scenarios' simulations to design the optimal microgrid configuration. The resulting microgrid design costs are compared against current operation costs of DG used for i-DE. Additionally, a maximum DG energy quota has been set for the microgrid design in order to make sure it is cleaner than the current equipment. Afterwards, the sensitivity analysis of the results against battery costs has been analysed attending to current, 2022 and 2030 prices. Results have shown that the optimal portable microgrid includes a DG that will provide the baseload and run at maximum efficiency. It will be complemented by a fully-charged Li-ion battery. The system will be cost-competitive when the annual uses are equal or higher than 60 and intervention duration are equal or shorter than 8 h. Finally, 2030 battery costs make portable microgrids feasible in every case.Item Economical and technical viability of demand response in the spanish power system: the "optiges" project(2008) Cobelo, Iñigo; Rodriguez, José Emilio; Boyra, Maialen; Anduaga, Jon; Castellanos, Antonio; Tecnalia Research & Innovation; POWER SYSTEMS; POWER ELECTRONICS AND SYSTEM EQUIPMENTThis paper presents a project that is being carried out by Endesa in Spain with the aim of controlling peak demand by modifying the consumption of customers within the small and medium enterprise sector. A full load control architecture is being developed and different pilot tests are being specified.