Mobile metering

The Mobile Metering (energy measurement with the aid of a mobile electricity meter ) allows the mobile data acquisition in the energy market. While Deutsche Bahn has been using this technology for their trains for years, it is also used to record charging processes for electric cars .

A mobile meter is either integrated into the vehicle itself or into a special charging cable. The charging processes can be transmitted exactly (kWh-exactly) to a backend via mobile radio. Charging is carried out at simple, switchable system sockets that can be connected directly to the mains. They can be technically reduced to a minimum, as the accounting and communication technology is carried in the vehicle. These system sockets are inexpensive to purchase, require little maintenance and - in contrast to conventional charging points - do not cause any running costs for measuring point operation.

In conjunction with precise measurement services, secure data transmission and efficient billing, all of the essential requirements for a comprehensive, future-proof charging and billing solution for electromobility are met.

development

Mobile metering originated from the research projects “On Board Metering I & II” (2010–2015) with funding from the Federal Ministry of Economics and Technology . Those involved in these projects were:

ITF-EDF Fröschl GmbH (control center specialist)
PTB, Physikalisch-Technische Bundesanstalt
VOLTARIS GmbH (experts for meter energy services)
ubitricity society for distributed energy systems (mobile electricity provider / project management)

Electromobility was not viewed as a singular challenge in the context of the project. The expansion of electromobility should make a relevant contribution to the energy transition. The e-vehicle is designed as a system-relevant energy storage device for this purpose. The aim was to create as many network interconnections as possible, significantly more than e-vehicles, in addition to precise recording and billing, in order to enable every vehicle to access the network while it is parked.

Previously, charging infrastructure for e-vehicles, similar to filling stations, was thought to be centralized, with several e-vehicles sharing a charging point and thus not being able to get permanent network access. The shift in technology from the charging point to the vehicle was decisive for this: a comprehensive charging infrastructure that enables the system-relevant contribution can only be implemented with simple and inexpensive charging points.

Possibilities of the model

The disruptive approach of the mobile meter is now opening up new opportunities and business models in the field of electromobility.

Contribution to network stability. Electric vehicles can be integrated into the network as intelligent storage. The fluctuatingly generated renewable energies could thus be integrated into the network to a greater extent.
The technology shift from the charging point to the vehicle / charging cable makes charging points cheaper. A comprehensive charging infrastructure can be set up with significantly lower investments.
Free choice of energy provider / exact billing. The energy contract can be concluded with the Mobile Meter on the vehicle / charging cable, with a free choice of provider

Individual evidence

↑ Weil / Neumann: Comparative consideration of the security concepts of mobile metering and smart meter gateways . In: Physikalisch-Technische Bundesanstalt (Hrsg.): PTB-Mitteilungen. Volume 125 (2015), . Volume 125, Issue 3. Carl Schünemann Verlag GmbH, Bremen, Braunschweig and Berlin January 18, 2016, p. 53-58 .
↑ PTB requirements 50.7 (PTB-A 50.7) Electronic and software-controlled measuring devices and additional devices for electricity, gas, water and heat . April 2002.
↑ BMWi (ed.): Building block for the energy transition: 7 cornerstones for the “Intelligent Networks Regulation Package” .
↑ The car learns to count: mobile metering . In: All-Electronics.de . May 13, 2011 ( all-electronics.de [accessed on February 3, 2018]).
↑ Berg, A., Zisky, N .: On-Board Metering: Mobile measurement of tank current in electric vehicles - safe, valid for calibration and relevant for billing . In: Kahmann / Zayer (ed.): Electricity measurement technology . EW Medien und Kongresse GmbH, Frankfurt am Main 2012, ISBN 978-3-8022-1058-7 , p. 283-300 .

[1] Weil / Neumann: Comparative consideration of the security concepts of mobile metering and smart meter gateways . In: Physikalisch-Technische Bundesanstalt (Hrsg.): PTB-Mitteilungen. Volume 125 (2015), . Volume 125, Issue 3. Carl Schünemann Verlag GmbH, Bremen, Braunschweig and Berlin January 18, 2016, p. 53-58 .

[2] PTB requirements 50.7 (PTB-A 50.7) Electronic and software-controlled measuring devices and additional devices for electricity, gas, water and heat . April 2002.

[3] BMWi (ed.): Building block for the energy transition: 7 cornerstones for the “Intelligent Networks Regulation Package” .

[4] The car learns to count: mobile metering . In: All-Electronics.de . May 13, 2011 ( all-electronics.de [accessed on February 3, 2018]).

[5] Berg, A., Zisky, N .: On-Board Metering: Mobile measurement of tank current in electric vehicles - safe, valid for calibration and relevant for billing . In: Kahmann / Zayer (ed.): Electricity measurement technology . EW Medien und Kongresse GmbH, Frankfurt am Main 2012, ISBN 978-3-8022-1058-7 , p. 283-300 .