57 Group: Accident Management Systems Smart Grid Resilience: Concepts on dealing with Power Scarcity for decentralized Power Systems Sadeeb Simon Ottenburger, Wolfgang Raskob Introduction A better understanding of upcoming technolog- ical transformations and their impact on critical infrastructure systems and security of supply is one of the main drivers of our research. The transformation of the classical power system into a smart decentralized power system is one of the most prominent and societally relevant examples of such transformations - the ongo- ing increase of automation and power con- sumption illustrates it’s increasing importance accompanied by a simultaneously increase of vulnerabilities. Furthermore, a drastic change of power consumption, e.g. by an increased usage of electric vehicles, may result in unfore- seen loads that cannot be managed by the util- ity provider e.g. in terms of demand side man- agement. Therefore, our research deals with the following topics: Assessing the impact of different power and ICT- network structures on the resilience of urban systems. Development of new risk-based power distribution mecha- nisms dealing with power scarcity in order to avoid large-scale blackouts and improve secu- rity of supply (Ottenburger et al. 2018b; Otten- burger und Münzberg T. 2017). The methods that are used ground on modelling various crit- ical infrastructures, power-, and ICT-infrastruc- tures separately, but also new resilience measures. The key idea is to consider smart grid topology and power distribution mecha- nisms as model parameters. Thus, by varying these parameters for a specific region, e.g. an urban area, good structures and distribution mechanisms may be identified. Urban Resilience and Power System The concept of urban resilience encompasses various types of resilience dimensions such as the social, economic or physical infrastructure dimension (Cimellaro 2016). Critical infrastruc- ture (CI) services such as the supply of elec- tricity, drinking water, and health care provide vital services for the population, thus disrup- tions or failures of these services are hazard- ous and can lead to injuries or even losses of life, property damages, social and economic disruptions or environmental degradations. Therefore, CIs constitute a pivotal aspect in ur- ban resilience considerations and establishing and implementing sophisticated continuity management concepts w.r.t. CIs can be re- garded as one of the major building blocks for preserving or enhancing urban resilience. Most of the CIs like water supply, hospitals, pharma- cies, and traffic- and transport systems rely on electricity - the circumstance of massive de- pendencies of other CIs to the electrical power entitles the electrical power grid to be consid- ered as a high ranked CI. The generation and supply of electricity is currently about to un- dergo a fundamental transition (Farhangi 2010; Gungor et al. 2013). Due to the integra- tion of smart meters, the consumers in the classical sense will have the eligibility to con- sume, produce and distribute electricity. The therefor necessary smart meters are electronic devices that monitor electricity consumptions and generations and allow two-way communi- cations with other meters (Parhizi et al. 2015). However, to keep a stable electricity supply it is important that in-feed and consumption form an equilibrium. A smart grid construed as a complex and highly automated power distribu- tion grid fundamentally relies on a rigorous multi-layered distribution management system