A survey of solutions and options for the integration of distributed generation into electricity supply systems

Abstract

Since a number of years the role of distributed generation (DG) technologies, connected directly to distribution networks, is emerging because of its expected flexibility in increasing generation capacity, its environmental benefits, and due to advancements in technology development. DG facilities are now connected at sites that were originally not meant to connect a large number of power generation facilities. This can increase the burden on the distribution network in terms of stability and power quality. At the same time existing network regulation does not enable a proper valuation of costs and benefits. Two European research projects aim to tackle these issues from a both technical and socio-economic viewpoint. The conclusion is that to facilitate a major increase of the DG share in electricity supply systems, a proper allocation of costs and benefits between different functions in the electricity system (generation, trade, transmission / distribution, consumption) will be necessary.