Standards for Implementing Smart Charging
- PDF / 576,789 Bytes
- 4 Pages / 595.276 x 790.866 pts Page_size
- 96 Downloads / 189 Views
Standards for Implementing Smart Charging
© IAV
AUTHOR
In order to implement a smart grid, energy generation and the consumers must be connected with specified and standardized interfaces. IAV describes on which basis high-performance smart grid applications can be developed.
REQUIREMENTS FOR GRID INTEGRATION AND SMART CHARGING
Electric vehicles are able to support the mobility and energy transition if cooperative charging is possible, that means the demand for energy and its availability are balanced. The prerequisite is an overarching communication network to control the various functions: authorization, charge control, load management, billing process and value-added services. Intelligent load management is needed to extend the charging infrastructure effi-
62
ciently. Electric vehicles can be used for bi-directional energy flows, in other words, they can both be charged and discharged. The battery of an electric vehicle is hence capable of buffering excess electric energy generated by PV systems or wind turbines. During peak load times, the battery can deliver electric energy to consumers in order to stabilize the power grid. Additional functions for smart charging include the transfer of price scales and a cooperative scheduling of charging times between energy provider and electric vehicle as well as
Ursel Willrett is Senior Specialist for E-Mobility Infrastructure Systems at IAV in Sindelfingen (Germany).
changes in scheduling, the control of charging and discharging processes based on price scales and the controlling of changes during the charging process. COMMUNICATION SYSTEM CONCEPT
The requirements placed on communication in a smart charging system include bi-directional communication, interoperability and data security. The first step in conceptualizing a future-proof e-mobility system is to clearly define the various roles. This allows the requisite inter-
faces to other roles and the necessary communication modules or protocols to be der ived. Important roles in a smart charging system include the customer, charge point operator, e-mobility service provider, distribution service operator and e-roaming clearing house. There are standardized interfaces and suitable communication protocols between these roles. Services and energy available at different points in time and the corresponding tariffs are important pieces of information for high-performance smart charging functions that can be transmitted via communication protocols. All communication protocols mentioned contain complex data structures that enable a large number of different offers to be transmitted from the e-mobility service provider to the vehicle. COMMUNICATION PROTOCOLS
A protocol stack is the conceptual architecture underlying communica-
tion protocols. They are modeled on the OSI reference model, which successively assigns the individual protocols to seven numbered layers. Communi cation within a protocol is based on defined messages, most of which contain a number of parameters. A protocol is an agreement to communicate
Data Loading...
