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FEN examines feasibility of a DC residential area

10-26-2017 02:50 PM CET | Energy & Environment

Press release from: Flexible Electrical Networks (FEN) Research Campus

In a feasibility study for Innovationsregion Rheinisches Revier (IRR) GmbH, FEN Research Campus has examined the development and implementation of a DC-based smart grid residential area, which is mostly powered by means of renewable energies (RE). An essential advantage of DC technology lies in the efficient energy supply of households where an AC/DC conversion is omitted and, hence, costs are saved. This advantage makes the business model development particularly interesting for potential stakeholders such as home owners (prosumer) service providers for RE systems, residential developers as well as grid operators.

The basis of the business model development is the “all-electric house“: By means of an integrated photo-voltaic (PV) system and a local battery system, which are incorporated in a DC grid, not only the overall electric energy supply but also warm water heating and general heating are carried out electrically. In the business model of the DC residential area, ten of these all-electric houses are interconnected by DC street lighting. Further versions of the DC residential area include a DC mini wind turbine, a central battery, an e-car fleet and hydrogen production as additional supply and storage components.

As part of the feasibility study, FEN Research Campus considers different aspects such as regulatory requirements (no feeding into the public grid) as well as financial and economical conditions (e.g. investment and acquisition costs). Furthermore, the business model of the DC residential area and its different versions are being evaluated by means of various criteria such as economic efficiency, social acceptance or funding potential, among others. As a result, both positive and negative feedback as well as potentials and need for optimization in terms of further research and development can be shown.

FEN Research Campus is an association of institutes of RWTH Aachen University and of international industry partners from differ-ent departments. The aim of FEN Research Campus is to investigate and to develop innovative technologies for future electrical grids with a high share of fluctuating and decentralized renewable energy sources. In this way, FEN makes an important contribu-tion to a sustainable, reliable and affordable energy supply in the future. The transdisciplinary research of FEN Research Campus focuses on the integration and development of direct current (DC) technology in six research topics: grid planning and operation, automation and control, standards and regulations, cloud platform for smart energy services, power conversion and components and non-technical aspects, like social acceptance as well as urbanistic and economical aspects. The research activities are located amidst the RWTH Aachen Campus Melaten. FEN Research Campus is supported i.a. by the funding initiative “Forschungscampus - öffentlich-private Partnerschaft für Innovationen“ of the Federal Ministry of Research and Education (BMBF).

Flexible Electrical Networks (FEN) Research Campus
FEN GmbH
Sascha Falkner
Campus-Boulevard 79
52074 Aachen
Tel.: +49 241 80 22471

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