Growing challenges for power distribution grids
The challenges of the energy transition and the electrification of our society are multi-faceted, especially at the lower levels of our electricity distribution grids – the expansion of photovoltaic capacity, as well as the growing numbers of electric vehicles and heat pumps across the country, are just a few examples here.
Current factors such as the war in Ukraine as well as the coming winter further intensify this situation. The LVRSys low-voltage control system from A. Eberle is an important component for mastering these challenges of the energy transition in the low-voltage grid.
If many consumers access the grid at the same time, e.g. if several households charge their electric vehicles at the same time in the evening, the supply voltage threatens to drop. Whereas if numerous households feed electricity into the low-voltage grid at the same time, for example via photovoltaic systems, this has an effect on the supply voltage in the form of a rise.
In such situations, the LVRSys low voltage regulation adjusts the line voltage, depending on whether it is a drop or a rise, it is increased or decreased accordingly.
This prevents severe overvoltages or undervoltages and the associated negative effects on electrical devices (defects, failures, reduced service life) and ensures the supply quality of the low-voltage grid.
LVRSys thus makes it possible to integrate a multiple of photovoltaic systems or wallboxes for electric vehicles on existing low-voltage lines – and largely without bureaucracy, building applications and excavators. Compared to lengthy and expensive grid expansion, a low-voltage regulation system is thus a cost-effective and quickly applicable solution.
A. Eberle supports Friedrich Alexander University Erlangen-Nürnberg with LVRSys low-voltage regulation system
The Chair of Electrical Energy Systems at FAU operates an innovative microgrid and energy storage laboratory at the Energy Campus Nuremberg (EnCN). To support research on the energy transition and to give students the opportunity to gain practical operating experience in low-voltage grids, A. Eberle is donating a LVRSys low-voltage control system.
“The low-voltage regulation system complements our laboratory and expands our possibilities for analyzing the integration of renewable energies in even greater detail,” says Simon Resch, the scientist responsible for the real laboratory, with pleasure.
Initially, however, the system is to be used primarily in teaching: here it enables students of electrical engineering and power engineering to simulate realistic daily curves within a few minutes, to change the length of a connecting line at the push of a button or to simulate the integration of additional photovoltaic systems. In this way, they learn in practical exercises how the grid voltage is influenced by lines and their load and which control measures make sense. The students can practically measure and assess the quality of the grid voltage in the laboratory set-up. In addition, students can implement their own projects on the low-voltage control system as part of their final theses.
Thus, they learn in practical exercises how the mains voltage is influenced by lines and their load and which control measures are useful. The students can practically measure and assess the quality of the mains voltage in the laboratory set-up. In addition, students can implement their own projects on the low-voltage control system as part of their final theses.
“The low-voltage control system opens up new perspectives for us in the real-time simulation of complex network structures,” summarizes chair holder Prof. Dr. Matthias Luther.
“We thank A. Eberle for the new system and look forward to further cooperation.”
► Sound interesting? Request more information or an appointment for a presentation of the LVRSys low-voltage regulation system here: