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This paper addresses the issue of high coincidence factors during electric vehicle (EV) charging cycles and the impact of flexibility aggregators. Based on findings for grid planning principles for EVs, an approach was explored to reduce grid loads caused by charging currents through the reduction of the probability of simultaneous charging cycles. Through the implementation of a split charging routine,...
In this contribution a self-calibrating decentralized reactive power management is proposed that optimizes reactive power usage without the need of central energy management systems or communications. With a surge in charging infrastructure, the DSO “Netze BW” is testing new ways for voltage control via reactive power management in field tests. In this paper, the results from an approach which allows...
Novel business concepts utilizing load-flexibility offered by battery storage systems, electric heating and vehicles are emerging. This paper investigates the economic potential of such concepts when applied to households and highlights the view from a German DSO on integrating battery storage into Smart Grids. In this context, a new concept called “virtual metering” is presented, which uses an optimization...
Phase symmetry is one of the primary concerns for distribution system operators. Three phase charging infrastructure offers a new method of solving this problem. Here we describe a phase balancing system based on fast charging infrastructure components and evaluate it based on simulations and field tests performed on 22 kW charging infrastructure prototypes in a low voltage grid. As part of a project...
Sustained integration of distributed renewable energy sources (especially photovoltaic generation in low voltage grids) has driven the need to expand grid capacities in recent years. Solutions to finding an economic justifiable approach for mains operation in an aging grid environment have become indispensable. This paper highlights the design of a probabilistic simulation environment. Furthermore...
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