Dispersed Generation - Business Models and Scenarios (Decentralised Power Supply 2020)

Beitrag bei einer Tagung


Details zur Publikation

Autorinnen und Autoren: Jäger J
Titel Sammelwerk: 42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008
Jahr der Veröffentlichung: 2008
Tagungsband: CIGRE Session 2008
Seitenbereich: Report C6-116


Abstract

The increasing use of renewable energy and efficient use of fossil fuels will lead to a major market share of distributed generation systems (DG) in 2020. A study initiated by VDE, the German electrical engineers association, was performed in Germany to analyse technical consequences as well as infrastructure requirements. The complex nature of distributed supply systems requires an integrated look at the supply system considering both generation and consumption. The knowledge of demand characteristics supports the development of distributed energy systems. Aggregation of consumers leads to an optimization of the demand curves and thus of the system. To cover this demand CHP plants are the preferred solution. To design them heat and power governed mode have to be distinguished. The first one considers a surplus of power to be fed to the grid, the second assumes that the production is completely consumed on site. Storage systems can support the effort to balance offer and demand. In this context self-supplied areas are a special form of distributed systems, called microgrids. Being operated independently in case of grid failures they are comparable with conventionally interconnected grids. New IT systems support this by including an energy management system to optimize the operation of DG as well as bidirectional data exchange. In addit ion, information and communication technologies are necessary that these systems are not limited to local situations. As virtual power plants they can be operated border-crossing. An increasing generation from DG will have an impact on the overall network. This concerns not only the short-circuit capacity and the grid losses but also plant and grid protection as well as frequency and voltage control, reactive and shortcircuit power, exchange of power with other supply areas and many other tasks involved. The overall operation of a grid consisting of centralized and decentralized units requires that DG contribute to the system services e. g. providing power reserve. Scenario calculations in the framework of the study show that distributed systems can provide energetic, environmental and cost advantages compared to purely central supply. They result from combined heat and power supply and the use of environmental-friendly energy sources.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Jäger, Johann Prof. Dr.
Professur für Elektrische Energieversorgung

Zuletzt aktualisiert 2018-03-07 um 14:08