By Benoît Robyns, Bruno François, Gauthier Delille , Christophe Saudemont
This booklet offers with the administration and valuation of strength garage in electrical strength grids, highlighting the curiosity of garage platforms in grid purposes and constructing administration methodologies in accordance with man made intelligence tools. The authors spotlight the significance of storing electricity, within the context of sustainable improvement, in "smart grids", and talk about a number of prone that storing electricity can bring. Methodological instruments are supplied to construct an strength administration process garage following a typical process. those instruments are in accordance with causal formalisms, synthetic intelligence and particular optimization suggestions and are offered in the course of the ebook in reference to concrete case reports
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Extra resources for Energy Storage in Electric Power Grids
171–175, 1999. , COLAS F. , “Energy management and operational planning of a microgrid with a pv-based active generator for smart grid applications”, IEEE Transactions on Industrial Electronics, vol. 58, no. 10, pp. 4583–4592, October 2011. , “A multiagent fuzzylogic-based energy management of hybrid systems”, IEEE Transactions on Industry Applications, vol. 45, no. 6, pp. 2123–2129, November– December 2009. , “Control based on fuzzy logic of a flywheel energy storage system associated with wind and diesel generators”, Mathematics and Computers in Simulation, vol.
High-capacity systems (from approximately 100 kWh to approximately 10 MWh) are in the more or less advanced experimental stage. To give some values, the stack of a VRB system has a power density of 30 W/kg (and 90 W/kg at its peak) for a percycle efficiency of around 83% for load/discharge cycles of several hours each, while the electrolyte energy density is around 15 kWh/m3 [MUL 13]. 2. Hydrogen storage Hydrogen energy storage systems use an electrolyzer. During electricity storage periods, the electrolyzer breaks water down into oxygen and hydrogen according to the equation 2H2O = 2H2 + O2.
It is also used in power batteries in Toyota hybrid drive chains [MUL 13]. 5. Electrolyte circulation batteries Circulation batteries (flow batteries) make it possible to circumvent the limitations of classic electrochemical accumulators, in which electrochemical reactions create solid compounds that are stored directly on the electrodes where they are formed. The mass that can be accumulated locally is, therefore, necessarily limited, which in turn limits capacity. 15 [ROB 05a] shows, in electrolyte circulation batteries the chemical compounds responsible for energy storage are liquid, in solution in the electrolyte, and are pumped between the tanks and the electrochemical converter proper (called the stack).