Theoretical Computer Science
Modeling and verification of randomized distributed real-time systems
Modeling and verification of randomized distributed real-time systems
Self-stabilization
Markov Decision Processes: Discrete Stochastic Dynamic Programming
Markov Decision Processes: Discrete Stochastic Dynamic Programming
Automatic verification of real-time systems with discrete probability distributions
Theoretical Computer Science
MODEST: A Compositional Modeling Formalism for Hard and Softly Timed Systems
IEEE Transactions on Software Engineering
A Modest Approach to Checking Probabilistic Timed Automata
QEST '09 Proceedings of the 2009 Sixth International Conference on the Quantitative Evaluation of Systems
Future design challenges for electric energy supply
ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
ICFEM'11 Proceedings of the 13th international conference on Formal methods and software engineering
Model-checking and simulation for stochastic timed systems
FMCO'10 Proceedings of the 9th international conference on Formal Methods for Components and Objects
Simulation and statistical model checking for modestly nondeterministic models
MMB'12/DFT'12 Proceedings of the 16th international GI/ITG conference on Measurement, Modelling, and Evaluation of Computing Systems and Dependability and Fault Tolerance
A demand-response calculus with perfect batteries
MMB'12/DFT'12 Proceedings of the 16th international GI/ITG conference on Measurement, Modelling, and Evaluation of Computing Systems and Dependability and Fault Tolerance
Automatic verification of competitive stochastic systems
TACAS'12 Proceedings of the 18th international conference on Tools and Algorithms for the Construction and Analysis of Systems
mctau: bridging the gap between modest and UPPAAL
SPIN'12 Proceedings of the 19th international conference on Model Checking Software
A comparative analysis of decentralized power grid stabilization strategies
Proceedings of the Winter Simulation Conference
Runtime verification: the application perspective
ISoLA'12 Proceedings of the 5th international conference on Leveraging Applications of Formal Methods, Verification and Validation: technologies for mastering change - Volume Part I
A comparative analysis of decentralized power grid stabilization strategies
Proceedings of the Winter Simulation Conference
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Electric power production infrastructures around the globe are shifting from centralised, controllable production to decentralised structures based on distributed microgeneration. As the share of renewable energy sources such as wind and solar power increases, electric power production becomes subject to unpredictable and significant fluctuations. This paper reports on formal behavioural models of future power grids with a substantial share of renewable, especially photovoltaic, microgeneration. We give a broad overview of the various system aspects of interest and the corresponding challenges in finding suitable abstractions and developing formal models. We focus on current developments within the German power grid, where enormous growth rates of microgeneration start to induce stability problems of a new kind. We build formal models to investigate runtime control algorithms for photovoltaic microgenerators in terms of grid stability, dependability and fairness. We compare the currently implemented and proposed runtime control strategies to a set of approaches that take up and combine ideas from randomised distributed algorithms widely used in communication protocols today. Our models are specified in Modest, an expressive modelling language for stochastic timed systems with a well-defined semantics. Current tool support for Modest allows the evaluation of the models using simulation as well as model-checking techniques.