The following Workshops will take place on Tuesday 15. October 2013 from  13:30 – 14:30


Energy Storage Systems

The Role of Energy Storage in the Next Generation of Network (NGN) in Telecommunication and ICT and in the development of Smart Grids

Chairman: Dr. Göbel (Germany, Enersys)
Room: Saal 8

Download the workshop programme


Many of the Telecommunication systems used by companies are essentials and cause direct impact on the main business, being indispensable to work without interruption. They are typically powered by the local grid operators.

The telecommunication traffic over the POTS offered a high availability, but digital telephone now  and in the near future will operate completely over the Internet Protocol (IP) via Internet. Therefore we must implement now a highly uninterruptable securely powered Internet.



The existing telecommunication systems worked well in an uninterruptable manner, mostly based on Lead-Acid batteries in central offices and in outdoor cabinets till to the customer buildings.

Continuous, uninterrupted service and high reliability are needed for telecommunication infrastructure and services also in the future. We are now in a transitional period wherein IP Networks composed of router,server and other equipment have a very high power consumption, though switches have been used in telecommunications equipment in the past. The backbones of IP network equipment are now datacenters.

The energy consumption of information technology (IT)-equipment is increasing especially through the growth of new communication services, mobile communication, datacenters etc..

The adoption of Smart Grid devices throughout utility networks will effect tremendous change in grid operations and usage of electricity over the next two decades. The changes in how to control loads, coupled with increased share of renewable energy sources, will raise a new set of challenges in balancing consumption and generation. Integration of renewable is creating a need for more distributed storage.

Increased deployment of energy storage devices in the distribution grid will help to make this process more effective and to improve system performance. We will see new types of storage devices being utilized for grid support and new ways they are integrated into the grid..


The currently discussed Energy storage devices are based on a large variety of physical principles and different engineering approaches.


  • Lead_Acid
  • NiCd
  • Lithium-Ion
  • Lithium-Air




Compressed Gas

Fuel Cells

What are the most economic and efficient solutions for energy storage systems in correlation to the load requirements?



The growing costs of energy together with the growing environmental consciousness have led to a push in research activities on alternative energy sources and in actions on energy consumption reduction.

What are the necessary actions to be done in these areas?

What are the future targets on renewable energy sources usage in the telecommunication field?



High safety is a must for any energy storage systems used in telecoms.

A higher energy density often requires monitoring and single cell controlling to reduce the fire risk. Standardization plays a vital role in this process.



Standardization needs to cover all storage systems and battery types to ensure the highest possible level of safety for the personal and the operation.

The technical bodies involved as IEC, ISO and CENELEC start working on these standards. Are the actual activities enough? How we can proceed?


Future trends in the power supply for Telco and Data Centres: AC to DC?
Panel Discussion
Chairman: Mr. Wilfried Schulz (Deutsche Telekom)

Room: saal 7

Wilfried Schulz is Senior Expert – Responsible for Product Safety and
Power Supply in Transmission Systems in the Access Network of Deutsche Telekom AG, Germany.

Member of ETSI TC EE and TC SAFETY and member of the several technical committees by the German Electrotechnical VDE for Safety of information technology equipment. He worked as a active member of IEC TC 108 and MT2, IEC TC 76 Laser Safety and CENELEC TC 108X.

Download the workshop programme  

Historically the AC power supply has been independent  dominant in the IT environment, while the DC power supply has been the usual choice for Telcos.
According the introduction of the INTERNET and Broadband Services in the Central Offices the two applications are increasingly mixed, and in the near future they may possibly share the same homogenous power supply scheme.
The transition to a fully DC powered ICT applications has many sponsors worldwide. Is this a revolution ? Or will it be, if ever, a long-term and smooth evolution? Whatever the future of the DC power supply, the following key topics must be considered:
safety of personnel, availability and reliability of the power supply, conversion efficiency for energy savings, environmental impacts of the various solutions, life cycle management and standardization of the components in the electrical distribution. Last but not the least: if the change is desirable, who will lead it? The End Users, the Power Converter providers or the IT systems manufacturers? Furthermore, will it be possible to win the traditional inertia in the customers’ specifications?
Below is a brief description of the key items that will be addressed during this discussion:

Is the safety level of a high-voltage DC distribution the same as that of an AC one? Is it easier or more difficult to make high-voltage DC distribution safe for maintenance personnel and for end users?

Availability and reliability
Is a high-voltage DC distribution as reliable as an AC one? Can a DC distribution achieve and exceed the AC distribution availability?

Efficiency for energy savings
The Kyoto protocol, the EUP Directive in Europe, the JRC-EU Codes of Conduct for Broadband Services and Data center: the best practices and normative for energy savings are pervading the various industries, thanks also to global and local regulatory layers. From this standpoint, can the high-voltage DC distribution be more advantageous than the AC one? The modularity and scalability of power supply systems may allow an optimal usage of the power conversion systems. However, the state-of-the-art dual-bus redundant systems for high availability does not allow for an optimal power usage, mainly due to the power sharing among converters. Can the high-voltage DC establish a new and better trade off?

Environmental impact and life cycle management:
Are there any differences between the AC and DC systems as far as the environmental impact (except efficiency) is concerned?
One important point, could be more efficient and more flexible use of DC source energy on a HVDC bus such as Photovoltaic and fuel cells generators.

Standardization for usability:
In order to have a true transition from the current mixed AC/DC to a full DC distribution a new definition and standardization of the distribution elements must be also established. Are the manufacturers ready to provide components that are suitable for the high-voltage distribution, or will they do this only in the future?
Green grid standardization activities are already placed in ETSI TC EEPS and

Organized by
In cooperation with
Platinum Sponsor
ELTEK Deutschland GmbH
Gold Sponsor
Silver Sponsor
NorthStar Site Tel
Enersys EH Europe GmbH
Würth Elektronik eiSos GmbH & Co. KG
Power Innovation
Impressum | © 2010 VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V.