top of page

Electromobility - Integration of the charging infrastructure into the power supply network


DestroSolutions includes this training as part of its innovative Cyber Security Training Program.

From numerous installations and pilot projects in public and private spaces, the charging infrastructure has proven to be a critical success factor for the widespread spread of electromobility. Currently, a simultaneity factor of 1 is planned, which brings the distribution network to its limits.

The charging infrastructure for electric mobility must be integrated into the existing power supply network in a compatible manner. This places new demands on planners, installers, operators and electricity suppliers (VNB) as well as on the power supply network. The approach is basically subject to different criteria than the classic power supply. There is plenty of potential for optimization in technology and costs.


Goal of further education

The seminar combines the general electrical installation and power supply of the fixed installation with the requirements of the charging systems. It provides you with practical planning and realizations for a charging infrastructure that can be safely and permanently integrated and operated into an existing high-voltage grid (400/230V 50 Hz). After an overview of the charging systems on the market (AC and DC) and their requirements for the high-voltage grid, the focal points for electrotechnical implementation, generally accepted electrotechnical rules and practical integration into the conditions on site are presented. Electrotechnical regulations and standards in this environment are explained in detail and the prescribed registration and approval procedures are presented.

Furthermore, the data technology systems for load management and the recording of energy consumption as well as the possibilities for billing are illuminated.

Basic knowledge of electrical engineering and general power supply is required.


Employees of energy supply companies, municipal utilities, electrical planning offices, real estate operators of networks and real estate such as train stations, airports, parking garages, administrative buildings, industrial complexes, rest areas, housing companies and cooperatives
- Manufacturers, installers and operators of charging stations


1. Day: 10.15 am to 5.30 pm, including breaks
2. Day: 8.00 am to 3.30 pm, including breaks
3. Day: 9.15 am to 3.00 pm, incl. breaks

Part A: Basics
electrotechnical basics, complex relationships simply explained, direct, single-phase alternating three-phase current, harmonics, effects on voltage reduction: influences and effects on charging systems
Overview of charging stations and systems used in practice, key technical data
AC charging systems AC up to 50 kW, DC charging system DC up to 350 kW
Requirements of modern charging systems for the power supply network
Performance of power supply networks and grid construction
Number of charging systems at a link point
Planning of the connection: Supply from the public power supply network or from a customer's own network
Network load, calculation examples
Utilization of the existing network infrastructure, management system for charging, maximum charging power
Criteria of network quality (EN 50160), electromagnetic compatibility
with stationary and non-stationary energy storage (e.g. battery buffers)

Part B: Laws, regulations, standards
State building code, building permit, line system guideline LAR, legal classification of charging systems on public and private premises
GEIG, AVV charging stations, charging station regulation, district solutions
Technical connection conditions TAB of the distribution system operators VNB and application rule AR 4100
Registration and approval procedure
Installation regulations VDE 0100-722 Power supply of electric vehicles
Control of DC fault currents, RCD/FI selection, integration into the charging circuit
Application rule AR 4110 when connected to the medium-voltage network (previously TAB medium-voltage) via a transformer station
Special features for connected power over 4.6 kW, over 12 kW, over 100 kW and over 1000 kVA

Part C: AC charging stations up to 22 kW
single whale box without charging management system
several whale boxes behind a house connection with a simple charging management system
many whale boxes with load and charging management, possibilities of realization without and with additional further network expansion

Part D: DC charging station up to 350 kW
Construction of DC charging stations, outlook on product standard
Special features of the DC charge
Network system on the DC side, protective measures
Possible solutions for connection to the low-voltage grid
Possible solutions for connection via the medium-voltage grid

Part E: AC and DC charging parks
Planning, calculation and design of a power supply network with charging stations
Charging management, intelligence, what does this system have to do?
Energy management with energy storage at the grid connection point

Part F: Dangers and protection
Dangers caused by alternating current (AC) and direct current (DC)
Protective measures AC and DC: plant protection, personal protection, property protection, vandalism
Overvoltage protection (flash and switching overvoltages)
Grounding, protection potential equalization, main earthing rail, potential equalization, additional potential equalization, potential control
Avoidance of the dangers of potential difference at long distances
Detect and switch off alternating and direct error currents

Part G: Data technology systems, IT, cloud
Communication with the vehicle
Control and regulation of the charging power
Connection of the requirements of the power supply network and the battery charge
Possibilities of intervention through open IT solutions
Billing systems
Cloud solutions and systems
Intelligence, consideration of customer-specific requirements (VNB, network services, performance reduction by VNB)


Part H: Possible solutions and examples
Performance determination, current balance, simultaneity factor, new stipulations in the standards
Execution of the final circuits, principles
Construction of a sub-distribution for connecting several charging points from a central location
Cable design for continuous current, short circuit, personal protection, voltage drop
additional charging stations in an existing cable network (public power supply network with house connection box)
Replanning of charging stations via a cable connected directly to a transformer station with sufficient power reserve
Design of the feeding transformer, increase in power through external ventilation more charging points through charging management system
Use of a managed energy storage and management system for charging

Part I: Example of interpretation as a summary and discussion
Design of a charging system/charging park on an example together with the seminar participants under summary and application of the entire seminar 

bottom of page