Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Optimal reactive power supply in distribution networks - technological and economic assessment for PV-systems -

: Braun, M.; Stetz, T.; Reimann, T.; Valov, B.; Arnold, G.

Volltext urn:nbn:de:0011-n-1290207 (525 KByte PDF)
MD5 Fingerprint: f27a1e4618215fff786559d9fa441d61
Erstellt am: 24.4.2010

Sinke, W. ; WIP - Renewable Energies, München; European Commission; UNESCO; World Council for Renewable Energy; International Photovoltaic Equipment Association:
24th European Photovoltaic Solar Energy Conference 2009. CD-ROM : The compiled State-of-the-Art of PV Solar Technology and Deployment. Proceedings of the International Conference held in Hamburg, 21-25 September 2009
München, 2009
ISBN: 3-936338-25-6
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <24, 2009, Hamburg>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IWES ()
reactive power supply; distribution network; economic optimization

As a reaction to the steadily increasing share of photovoltaic (PV) power, German utilities are working on a new standard for the connection and parallel operation of generators in low voltage networks. The new grid code could be a big step towards active participation of PV-Systems in low voltage network operation. Reactive power provision by PV systems is expected to be interesting in future. This paper starts with a theoretical introduction on how reactive power can be used to influence of PV power feed-in on the voltage at its point of common coupling. For a technical and economical optimization of the most common reactive power provision methods two typical German low voltage distribution test feeders (rural and suburban network structure) with high level PV penetration have been modelled and analyzed. Here, the economic evaluation considers the perspective of the PV plant operators as well as of the distribution system operator. The results show that the highest share of the total additional operational costs arises for the PV plant operators and that there exists a big difference in the costs of the different reactive power supply approaches. Also an overview is given about the actual situation on grid codes and the certification procedures in Germany.