Impact of large share of renewable generation on investment costs at the example of aw distribution network

Abstract

In this paper the integration of an excessive share of distributed generation into a T&D system in the southern part of Germany has been examined. Various solutions like conventional network extension, energy storage, load management and controllable smart grid components are compared in terms of number of assets and investment costs.

Impact of operation strategies of large scale battery systems on distribution grid planning in Germany

“…In Germany, due to unbundling the DSO is normally not the owner of the DG or BSS and therefore has only very little or no influence on the location. Several studies exist combine grid planning with DG and take the active power control of large scale batteries for peak shaving into account [85,83,14,93]. Nevertheless, from the studies mentioned above only [85] and [93] consider reactive power control, even though [94] highly recommends further studies on this issue.…”

“…The drawback of this traditional grid planning procedure is large investment in infrastructure with a low utilisation rate. Historically, network extension planning has been based on maximum load scenarios, but in the case of a high penetration with DG the grid is dimensioned to deal with maximum generation [14]. In Germany, the number of hours in which PV-systems feed more than 90 % of their nominal power into the grid is below 100 hours a year [15].…”

“…Extending the previous work of the authors, this paper gives an overview and evaluates alternative possibilities to traditional DG induced grid extension with large scale battery storage systems (BSS). As in most cases, this alternative turns out not to be profitable, if the BSS's only purpose is to mitigate traditional grid extension [14] additional revenue streams have to be taken into account. Therefore, the objectives of this paper are to review additional applications for BSS in the German electricity market in order to combine them with the task of mitigating grid extension caused by DG and evaluate the impact of the resulting operation strategies…”

An Indicator-Based Approach for Analysing the Resilience of Transitions for Energy Regions. Part II: Empirical Application to the Case of Weiz-Gleisdorf, Austria

“…In Germany, similar initiatives such as the 100% renewable energy regions (100ee-Regionen) have emerged on a regional scale, with similar initiatives at city and community level [5][6][7]. Some of these regions have been quite successful in the energy transition, building new institutional structures and increasing the share of renewable energy sources in the regional energy supply, while being able to export energy to other regions [8][9][10][11][12][13]. In many cases, however, a few years after the initial enthusiasm, a hiatus emerged as the expected outcomes in energy self-sufficiency were not reached within the time they were envisioned [14][15][16].…”

Modeling transition paths towards decentralized regional energy autonomy: the role of legislation, technology adoption, and resource availability

“…Some have been quite successful in energy transformation, achieving a new institutional structure and increasing the share of local renewable energy sources in their energy supply (Binder/Hecher/Vilsmaier 2014;Hecher/Vilsmaier/ Akhavan et al 2016). A number of communities even export energy (Pfefferkorn/Rauzi/Wyss 2009;Brickmann/ Kropp/Türk 2012;Meyer/Mueller/Koeberle et al 2013;Radzi/Droege 2013).…”