Local flexibility markets: An economic solution for the upcoming influence of electrical charging station penetration

Abstract

The installation of decentralized renewable energies is still going on in low and medium voltage grids and will increase the frequency of congestions in the near future. Especially voltage range violations are issues caused by simultaneous power peaks of photovoltaic systems. The concept of local flexibility markets (LFM) provides a reasonable solution for the distribution system operators (DSO) preventive congestion management in an economic and ecological manner. Furthermore, local flexibility markets can support the rapidly advancing integration of electric vehicle charging stations in particular within urban grid structures, where the mentioned challenges will be at maximum. The process of optimizing the flexibility acquisition as a key component of local flexibility market solutions will be a key aspect in this paper. Individual procedures and the use of specific matching algorithm will be addressed in detail. For demonstrating how LFM can support the integration of electric vehicle charging stations, the results of an urban low voltage grid simulation will be highlighted.