Regulation of Grid-efficient Charging from the User's Perspective
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Regulation of Grid-efficient Charging from the User’s Perspective
Grid-efficient charging is an important component in integrating the growing number of electric vehicles into the energy system of the future. A legal framework is currently being discussed which could in future oblige e-vehicle drivers to pay a surcharge for the ability to charge their vehicles unconditionally. A recent user study by the University of Passau, which was carried out as part of the research project Bidirectional Charging Management, indicates that this kind of regulation could affect the desired market deployment of electric mobility. 66
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A U T HORS
Marina Dreisbusch is Research Assistant at the Centre of Market Research of the University of Passau (Germany).
Dr. Stefan Mang is Head of the University of the Centre of Market Research of the University of Passau (Germany).
Sabrina Ried is Research Assistant at the Institute for Industrial Production of the Karlsruher Institute of Technology (KIT) (Germany).
Franziska Kellerer is Research Assistant at the Centre of Market Research of the University of Passau (Germany).
Xaver Pfab is Member of the Working Group Smart Grids and Meters and Project Leader Grid Inte gration Electric Mobility at the BMW AG in Munich (Germany).
MTZ worldwide 12|2020
KEEPING ELECTRICIT Y SUPPLY AND DEMAND IN BALANCE
The climate protection program published in October 2019 includes the goal of reaching a national fleet of seven to ten million electric vehicles in Germany by 2030 [1]. Against the background of a further growing share of electric energy from renewable sources, electric vehicles – operated purely batteryelectrically or in combination with an internal combustion engine as plug-in hybrids (Plug-in Electric Vehicles, PEVs) – with their battery storage can contribute to the success of Germany’s energy transition. At the same time, electric vehicles connected to the power grid pose a challenge for Distribution System Operators (DSOs). The high demand for simultaneously charging PEVs can occasionally lead to overload and bottlenecks in low-voltage networks, if no countermeasures are taken. The intelligent control of flexible consumption devices plays an important role in keeping electricity supply and demand in balance, and thus guaranteeing a stable electricity grid in Germany. Such devices are characterized by flexibility in terms of timing and power of their energy consumption. This includes heat pumps and electric storage heaters, as well as PEVs, which, due to long standing times, are not always dependent on being charged with the maximum contractual power. By implementing intelligent charging management systems, it is possible to interrupt the charging process in case of a network bottleneck or to reduce the charging power. In this way, it would be possible to ensure a high level of reliability of supply while optimizing the use of climate neutrally generated electric energy while simultaneously limiting the need for expensive grid expansion. Intelligent charging
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