Martin Scheufen

Integration of stationary and transportable storage systems into multi-stage expansion planning of active distribution grids

The integration of storage systems is a promising option to reduce or defer conventional expansion measures in distribution grids. In this paper an integrated approach for grid expansion planning and deployment of permanent stationary and temporary transportable energy storage is presented. In order to adequately represent storage systems, multiple investment stages and a sophisticated evaluation process are considered. The latter takes time-coupling storage behavior and multifunctional storage operation into account. The proposed approach uses a genetic algorithm with modified operators and linear and non-linear programming models for the fitness evaluation of storage and grid operation. The results of a test case demonstrate the validity of the proposed algorithm.

Identification of environmentally relevant network hotspots

The EU research project IRENE-40 aims to construct a roadmap for the European and Pan-European transmission network up to 2050. In this context a holistic assessment of the grid development takes place. In particular, this includes an ecological assessment in which the power generation emission change that can be achieved by grid expansion measures is considered. The Optimal Power Flow (OPF) is used as the main tool for the studies. Each analysis is done with a quantification of the sensitivity of the results at changing CO2-price. Furthermore the OPF is extended with regard to an ecological approach: In an Ecological OPF a minimum-emission generation is simulated. That way grid development projects can be identified which lead to a positive economical impact but negative ecological impact and vice versa.