Search Results for author: Dirk Witthaut

Found 21 papers, 3 papers with code

Synchronized states of power grids and oscillator networks by convex optimization

no code implementations14 Mar 2024 Carsten Hartmann, Philipp C. Böttcher, David Gross, Dirk Witthaut

Synchronization is essential for the operation of AC power systems: All generators in the power grid must rotate with fixed relative phases to enable a steady flow of electric power.

Multivariate Scenario Generation of Day-Ahead Electricity Prices using Normalizing Flows

no code implementations23 Nov 2023 Hannes Hilger, Dirk Witthaut, Manuel Dahmen, Leonardo Rydin Gorjao, Julius Trebbien, Eike Cramer

Additionally, our analysis highlights how our improvements towards adaptations in changing regimes allow the normalizing flow to adapt to changing market conditions and enable continued sampling of high-quality day-ahead price scenarios.

Probabilistic Forecasting of Day-Ahead Electricity Prices and their Volatility with LSTMs

no code implementations5 Oct 2023 Julius Trebbien, Sebastian Pütz, Benjamin Schäfer, Heidi S. Nygård, Leonardo Rydin Gorjão, Dirk Witthaut

Accurate forecasts of electricity prices are crucial for the management of electric power systems and the development of smart applications.

Management

Identifying drivers and mitigators for congestion and redispatch in the German electric power system with explainable AI

no code implementations24 Jul 2023 Maurizio Titz, Sebastian Pütz, Dirk Witthaut

The transition to a sustainable energy supply challenges the operation of electric power systems in manifold ways.

Stability bounds of droop-controlled inverters in power grid networks

no code implementations29 Mar 2023 Philipp C. Böttcher, Leonardo Rydin Gorjão, Dirk Witthaut

First, we explore the stability of an inverter coupled to an infinite grid in an analytic fashion and uncover stability and instability regions.

Understanding electricity prices beyond the merit order principle using explainable AI

no code implementations9 Dec 2022 Julius Trebbien, Leonardo Rydin Gorjão, Aaron Praktiknjo, Benjamin Schäfer, Dirk Witthaut

In perfect competition, the merit order principle describes that dispatchable power plants enter the market in the order of their marginal costs to meet the residual load, i. e. the difference of load and renewable generation.

Physics-inspired machine learning for power grid frequency modelling

no code implementations2 Nov 2022 Johannes Kruse, Eike Cramer, Benjamin Schäfer, Dirk Witthaut

Finally, we generate synthetic time series from the model, which successfully reproduce central characteristics of the grid frequency such as their heavy-tailed distribution.

Time Series Time Series Analysis

Predicting Dynamic Stability from Static Features in Power Grid Models using Machine Learning

no code implementations17 Oct 2022 Maurizio Titz, Franz Kaiser, Johannes Kruse, Dirk Witthaut

In this article we propose a combination of network science metrics and machine learning models to predict the risk of desynchronisation events.

feature selection

Understanding Braess' Paradox in power grids

no code implementations27 Sep 2022 Benjamin Schäfer, Thiemo Pesch, Debsankha Manik, Julian Gollenstede, Guosong Lin, Hans-Peter Beck, Dirk Witthaut, Marc Timme

The ongoing energy transition requires power grid extensions to connect renewable generators to consumers and to transfer power among distant areas.

Revealing interactions between HVDC cross-area flows and frequency stability with explainable AI

no code implementations22 Apr 2022 Sebastian Pütz, Benjamin Schäfer, Dirk Witthaut, Johannes Kruse

Here, we investigate the interaction of power imbalances - represented through the power grid frequency - and power flows on HVDC links between synchronous areas in Europe.

Change of persistence in European electricity spot prices

no code implementations7 Dec 2021 Leonardo Rydin Gorjão, Dirk Witthaut, Pedro G. Lind, Wided Medjroubi

These markets are designed to balance excess or lack of power in short time periods, which leads to a large stochastic variability of the electricity prices.

Time Series Time Series Analysis

Validation Methods for Energy Time Series Scenarios from Deep Generative Models

no code implementations27 Oct 2021 Eike Cramer, Leonardo Rydin Gorjão, Alexander Mitsos, Benjamin Schäfer, Dirk Witthaut, Manuel Dahmen

The design and operation of modern energy systems are heavily influenced by time-dependent and uncertain parameters, e. g., renewable electricity generation, load-demand, and electricity prices.

Time Series Time Series Analysis

Secondary control activation analysed and predicted with explainable AI

1 code implementation10 Sep 2021 Johannes Kruse, Benjamin Schäfer, Dirk Witthaut

Secondary control is key in restoring the power system to its reference following a disturbance.

BIG-bench Machine Learning

Exploring deterministic frequency deviations with explainable AI

1 code implementation14 Jun 2021 Johannes Kruse, Benjamin Schäfer, Dirk Witthaut

Deterministic frequency deviations (DFDs) critically affect power grid frequency quality and power system stability.

Explainable artificial intelligence

Revealing drivers and risks for power grid frequency stability with explainable AI

2 code implementations7 Jun 2021 Johannes Kruse, Benjamin Schäfer, Dirk Witthaut

Stable operation of the electrical power system requires the power grid frequency to stay within strict operational limits.

Explainable Artificial Intelligence (XAI)

Isolating the impact of trading on grid frequency fluctuations

no code implementations24 Mar 2021 Benjamin Schäfer, Marc Timme, Dirk Witthaut

While particularly large frequency deviations in 2017 are not as frequent as in 2011, large deviations are more likely to occur shortly after the trading instances.

energy trading Time Series +1

How Decentral Smart Grid Control limits non-Gaussian power grid frequency fluctuations

no code implementations24 Mar 2021 Benjamin Schäfer, Dirk Witthaut, Marc Timme

Furthermore, we review a decentral smart grid control scheme to limit these fluctuations.

Predictability of Power Grid Frequency

no code implementations17 Apr 2020 Johannes Kruse, Benjamin Schäfer, Dirk Witthaut

The power grid frequency is the central observable in power system control, as it measures the balance of electrical supply and demand.

Time Series Time Series Analysis

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