Browsing by Keyword "Energy management"
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Item Implementing active demand in the ADDRESS project: Laboratory tests and first results from the field(2012) Belhomme, R.; Eyrolles, P.; Gonzalez Sainz-Maza, R.; Jimeno Huarte, J.; Valtorta, G.; Morozova, E.; Naso, F.; Abi Ghanem, D.; Mander, S.; POWER SYSTEMSThe ADDRESS European project aims to develop a comprehensive commercial and technical framework for the development of 'Active Demand' and the market-based exploitation of its benefits. In ADDRESS, 'Active Demand' (AD) means the active participation of domestic and small commercial consumers in the electricity markets and in the provision of services to the other electricity system participants. This paper first recalls the project main concepts and briefly describes the proposed solutions. Then it gives an overview of the laboratory tests and the first results of the demonstrations that take place in three field test sites with different demographic and electricity supply characteristics in Italy, Spain and France. The first results of the consumers' acceptance study are also presented.Item Integration of der into power system operation through Virtual Power Plant concept applied for voltage regulation(2009) Oyarzabal, José; Martí, Juan; Ilo, Albana; Sebastian, María; Alvira, David; Johansen, Knud; POWER SYSTEMSThis paper reports on the solution adopted at the Southern Scenario demonstrator of the R&D project FENIX for the effective integration of distributed energy resources (DER) into power system operation. DER reactive power production, on load tap changers (OLTC) and shunt capacitors are optimally coordinated to alleviate/eliminate distribution network constraints. This general objective is defined within an optimal power flow (OPF) algorithm targeting other goals such as network losses reduction or influencing transmission network node' voltages. A commercial distribution management system (DMS) is adapted to integrate the voltage VAr control (VVC) module and the whole system is brought into operation with real time measurements and commands send on open loop basis.Item Integration of DER into power system operation through virtual power plant concept applied for voltage regulation(2009) Oyarzabal, José; Martí, Juan; Ilo, Albana; Sebastian, María; Alvira, David; Johansen, Knud; POWER SYSTEMSThis paper reports on the solution adopted at the Southern Scenario demonstrator of the R&D project FENIX for the effective integration of distributed energy resources (DER) into power system operation. DER reactive power production, on load tap changers (OLTC) and shunt capacitors are optimally coordinated to alleviate/eliminate distribution network constraints. This general objective is defined within an optimal power flow (OPF) algorithm targeting other goals such as network losses reduction or influencing transmission network node' voltages. A commercial distribution management system (DMS) is adapted to integrate the voltage VAr control (VVC) module and the whole system is brought into operation with real time measurements and commands send on open loop basis.Item Microgrids - Large scale integration of microgeneration to low voltage grids(2006) Hatziargyriou, N.; Jenkins, N.; Strbac, G.; Pecas Lopes, J. A.; Ruela, J.; Engler, A.; Oyarzabal, J.; Kariniotakis, G.; Amorim, A.; POWER SYSTEMSMicrogrids comprise Low Voltage distribution systems with distributed energy sources, such as micro-turbines, fuel cells, PVs, etc., together with storage devices, i.e. flywheels, energy capacitors and batteries, and controllable loads, offering considerable control capabilities over the network operation. These systems are interconnected to the Medium Voltage Distribution network, but they can be also operated isolated from the main grid, in case of faults in the upstream network. From the customer point of view, Microgrids provide both thermal and electricity needs, and in addition enhance local reliability, reduce emissions, improve power quality by supporting voltage and reducing voltage dips, and potentially lower costs of energy supply. This paper outlines selected research findings of the EU funded MICROGRIDS project (Contract ENK-CT-2002-00610). These include: • Development and enhancement of Microsource controllers to support frequency and voltage based on droops. Application of software agents for secondary control. • Development of the Microgrid Central Controller (MGCC). Economic Scheduling functions have been developed and integrated in a software package able to simulate the capabilities of the MGCC to place bids to the market operator under various policies and to evaluate the resulting environmental benefits. • Analysis of the communication requirements of the Microgrids control architecture • Investigation of alternative market designs for trading energy and ancillary services within a Microgrid. Development of methods for the quantification of reliability and loss reduction. • Initial measurements from an actual LV installation.Item A novel optimization algorithm for efficient economic dispatch of Combined Heat and Power devices(2016-01-01) Perea, E.; Ruiz, N.; Cobelo, I.; Lizuain, Z.; Carrascal, A.; DIGITAL ENERGY; POWER SYSTEMS; Tecnalia Research & InnovationCombined Heat and Power (CHP) units produce heat to warm living spaces, supply hot water and generate electricity. Their normal operation is determined by the building thermal demand. These systems supply hot water on demand from hot water storage tanks avoiding intermittent operation of the machines. A method based on a novel control algorithm is presented to optimize the operating costs of one or a set of CHP units in either commercial or residential buildings. The algorithm uses hot water storage tanks to schedule the daily operation of the CHP devices maximizing the benefits of the electricity that is generated, while ensuring that the heat demand is covered. This is especially relevant for regulatory environments with Time of Use tariffs for electricity. The method comprises an optimization algorithm that minimizes the value of a target function. The target function includes a series of weights that penalize the violation of certain constraints. The outputs of the optimization algorithm define the operating set points of CHP unit/s. The results of the case study simulations demonstrate that the proposed implementation of the algorithm can achieve cost effective savings. Finally, the successful operation of the algorithm is demonstrated in a real building installation.Item Nueva generación de sistemas de comunicaciones PLC para acometer los nuevos retos de las redes de distribución de BT(2018-02-06) Gandarias, Jaime; García-Borreguero, Ibone; Tecnalia Research & Innovation; Datos y ProtocolosLos despliegues de los sistemas de telegestión son ya una realidad en España. Las compañías de distribución están siendo capaces de cumplir con los requisitos de despliegue de forma que, para diciembre de 2018 la práctica totalidad de contadores instalados en nuestro país tendrán las funcionalidades de discriminación horaria y telegestión. Uno de los aspectos clave de este éxito ha sido el sistema de comunicaciones PLC (powerline) que facilita la interconexión de los contadores instalados en casa de cliente con los concentradores instalados en los centros de transformación. El sistema de telecomunicaciones PRIME (en su versión 1.3.6), que es la base tecnológica de multitud de redes de telecomunicaciones PLC, ha mostrado que es capaz de soportar los servicios de telecomunicaciones demandados por hasta la fecha, esto es, permite recuperar todos los días las curvas de carga horarias. Ahora bien, la pregunta que surge es si esta red de telecomunicaciones será capaz de soportar los nuevos servicios asociados tanto a la monitorización y control de nuevos activos (almacenamiento, generación distribuida) como a los servicios que demandarán los usuarios para mejorar la gestión energética de los hogares. En este artículo se identificarán los principales requisitos que los nuevos servicios impondrán a las redes de telecomunicaciones y describirá un breve estado del arte de la tecnología PRIME 1.4, identificando las principales acciones a realizar para que los retos planteados sean solventados por los nuevos sistemas.