ENNERA concludes its activity in mGridStorage project
During 2017 y 2018, ENNERA has participated in a project of research and development of an advanced microgrid model alongside leading Basque companies.
The main aim of this project has been to research and develop technologies that make up an advanced microgrid connected to the distribution network, from storage technologies to control and management technologies, in order to create an interoperable, clean, efficient and economically competitive microgrid concept. Due to this, many companies specialized in this sector, from power electronics manufactures to storage technology suppliers, have been involved in this consortium led by Iberdrola.
When using batteries, the storage component is usually the most sensitive part of a microgrid, due to its high cost and hardly predictable performance of an electrochemical device, which is extremely sensitive to very diverse operating conditions that influence the many chemical reactions happening inside a battery. On the other hand, power electronic devices are responsible for some of those operating conditions, as they manage the charging and discharging procedures of a battery. ENNERA, due to its vision as an integrator, has been able to identify and unite the requirements of all the components of a microgrid and find a functional solution optimized both in performance and costs.
As part of its activity inside mGridStorage, ENNERA has worked in the characterization of many batteries, namely lead-acid, lead-carbon and lithium-ion LFP. Multiple cycling tests have been conducted replicating the real operating conditions of an offgrid microgrid with solar generation and a grid-connected (ongrid) microgrid. These tests, based on the load profiles of some real applications, have contributed to define the optimum working conditions for a battery. The obtained test results have been used to elaborate mathematical models based on real data in order to calculate the degradation suffered by a battery in simulations of microgrid operation. The models have been implemented in a newly created, internally developed and real data-based Techno-Economic Tool, which enables the calculation of the optimum sizing and design of the microgrid both in technical and economic terms in a single analysis. At the same time, new operation strategies have been identified and validated by simulations, with the aim of extending the lifespan of the batteries, adapted to the requirements of a defined application. These strategies provide intelligence to the final system.
This project has been co-funded jointly by the Basque Regional Government and the European Union through the European Regional Development Fund (ERDF).