Auflistung nach Schlagwort "Smart Grid"
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- TextdokumentEin Algorithmus für den Wiederaufbau eines Smart Grid nach einem Blackout(INFORMATIK 2017, 2017) Buhl, Hendrik; Dombrowski, Tim; Hogen, Erik; Kreutz, Maximilian; Palm, Daniel; Stark, Sanja; Stubbe, Peer; Warsch, Stephanie; Bremer, Jörg; Lehnhoff, Sebastian; Sonnenschein, MichaelIm Rahmen der durch die Bundesregierung ausgerufenen Energiewende verändert sich die Struktur der Stromerzeugung von einer zentralen zu einer dezentralen, verteilten Stromproduktion. Diese bringt eine deutlich komplexere Organisation des Stromnetzes mit sich. Gleichzeitig erhalten Informations-und Kommunikationstechnik Einzug in die Stromversorgung – das Smart Grid entwickelt sich. Zwischen dem hierfür benötigten Kommunikations-und dem Stromnetz besteht jedoch eine wechselseitige Abhängigkeit. Dadurch wird das Wiederherstellen der Stromversorgung nach einem Blackout eine große Herausforderung. Als möglicher Lösungsansatz wurde ein verteiltes Verfahren entwickelt, das den automatisierten Wiederaufbau eines solchen Szenarios unterstützt. Es basiert auf einem Multi-Agenten-System, in dem durch das zyklische Bilden von Inselnetzen und den Zusammenschluss dieser Inseln der Wiederaufbau des Stromnetzes durchgeführt wird. Die prototypische Implementierung wurde in einer Simulationsumgebung getestet und mit einem empirischen Ansatz in Bezug auf seine Effektivität und Effizienz validiert. Dabei konnte gezeigt werden, dass das entwickelte Verfahren einen geeigneten Ansatz zur Lösung der gegebenen Problemstellung bietet.
- TextdokumentAutomated Monitoring of Operational Technology Security and Compliance for Power Grids(GI SICHERHEIT 2022, 2022) Fraune, BastianIT security standards can increase trust in a system or component if compliance to the standard can be proven to third parties. Those standards usually specify requirements for security features, which then lead to a certain configuration of an industrial control system. Continuous monitoring of IT security configurations on intelligent electronic devices is difficult because there is no standardised way to query the security configurations of those devices. The objective of this PhD project is to enable automatic querying of security settings from industrial control system in the use case of the power grid infrastructure for remote monitoring. This opens up the possibility of automatically comparing the actual security state on the device against the defined IT security standard configurations. In such cases, industrial control systems that do not comply with defined security standards can thus be identified directly by monitoring systems in the control centre.
- ZeitschriftenartikelFlexible IT platform for synchronizing energy demands with volatile markets(it - Information Technology: Vol. 60, No. 3, 2018) Schott, Paul; Ahrens, Raphael; Bauer, Dennis; Hering, Fabian; Keller, Robert; Pullmann, Jaroslav; Schel, Daniel; Schimmelpfennig, Jens; Simon, Peter; Weber, Thomas; Abele, Eberhard; Bauernhansl, Thomas; Fridgen, Gilbert; Jarke, Matthias; Reinhart, GuntherAbandoning fossil and nuclear energy sources in the long run and increasing amount of renewable energies in electricity production causes a more volatile power supply. Depending on external realities, renewable energy production emphasizes the need for measures to guarantee the necessary balance of demand and supply in the electricity system at all times. Energy intensive industry processes theoretically include high Demand Response potentials suitable to tackle this increasing supply volatility. Nevertheless, most companies do not operate their production in a flexible manner due to multiple reasons: among others, the companies lack know-how, technologies and a clear business case to introduce an additional level of flexibility into their production processes, they are concerned about possible impacts on their processes by varying the electricity demand and need assistance in exploiting their flexibility. Aside from fostering knowledge in industry companies, an IT-solution that supports companies to use their processes’ Demand Response potential has become necessary. Its concept must support companies in managing companies’ energy-flexible production processes and monetarize those potentials at flexibility markets. This paper presents a concept, which integrates both companies and energy markets. It enables automated trading of companies’ Demand Response potential on different flexibility markets.
- KonferenzbeitragIdentifikation von Videoinhalten über granulare Stromverbrauchsdaten(SICHERHEIT 2012 – Sicherheit, Schutz und Zuverlässigkeit, 2012) Greveler, Ulrich; Justus, Benjamin; Löhr, DennisSekundenscharfe Ablese-Intervalle bei elektronischen Stromzählern stellen einen erheblichen Eingriff in die Privatsphäre der Stromkunden dar. Das datenschutzrechtliche Gebot der Datensparsamkeit und Datenvermeidung steht einer feingranularen Messhäufigkeit und der vollständigen Speicherung der Stromverbrauchsdaten entgegen. Wir können experimentell nachweisen, dass neben der Erkennung von im Haushalt befindlichen Geräten eine Erkennung des Fernsehprogramms und eine Identifikation des abgespielten Videoinhalts möglich ist. Alle Messund Testergebnisse wurden zwischen August und November 2011 mithilfe eines geeichten und operativen Smart Meters, der alle zwei Sekunden Messwerte aufzeichnet, gewonnen. Die übertragenen Daten dieses Gerätes waren unverschlüsselt und nicht signiert.
- TextdokumentOn the effects of communication topologies on the performance of distributed optimization heuristics in smart grids(INFORMATIK 2020, 2021) Holly, Stefanie; Nieße, AstridDistributed heuristics have shown promising results in handling difficult optimization and coordination tasks in smart grids, which often have to deal with large numbers of components, distributed information and real time constraints. Some of these heuristics are distributed on an algorithmic level. This means that the way information is exchanged between the distributed units can effect the efficiency of the algorithm, in terms of computational effort, message volume, and convergence speed. It may even impact the effectiveness, i.e. the solution quality. The performance of control systems is of utmost importance for stable and optimal operation of critical infrastructure in smart grids. Therefore, factors influencing the effectiveness and efficiency, like the communication topology, must be thoroughly investigated in order to both initially configure them optimally and react appropriately to undesired behavior at runtime. The impact of the communication topology is studied with an experimental setup, using COHDA as an example heuristic. Systematic experiments are performed with various topologies and varying numbers of agents to illustrate the importance of a solid and maybe even dynamic choice of the communication topology for distributed heuristics in smart grid applications.
- ZeitschriftenartikelTowards Resilient Critical Infrastructures – Motivating Users to Contribute to Smart Grid Resilience(i-com: Vol. 20, No. 2, 2021) Egert, Rolf; Gerber, Nina; Haunschild, Jasmin; Kuehn, Philipp; Zimmermann, VerenaSmart cities aim at improving efficiency while providing safety and security by merging conventional infrastructures with information and communication technology. One strategy for mitigating hazardous situations and improving the overall resilience of the system is to involve citizens. For instance, smart grids involve prosumers—capable of producing and consuming electricity—who can adjust their electricity profile dynamically (i. e., decrease or increase electricity consumption), or use their local production to supply electricity to the grid. This mitigates the impact of peak consumption periods on the grid and makes it easier for operators to control the grid. This involvement of prosumers is accompanied by numerous socio-technical challenges, including motivating citizens to contribute by adjusting their electricity consumption to the requirements of the energy grid. Towards this end, this work investigates motivational strategies and tools, including nudging, persuasive technologies, and incentives, that can be leveraged to increase the motivation of citizens. We discuss long-term and side effects and ethical and privacy considerations, before portraying bug bounty programs, gamification and apps as technologies and strategies to communicate the motivational strategies to citizens.