Operations Research Proceedings 2017

Miltenberger, Matthias; Ralphs, Ted K.; Steffy, Daniel E.

doi:10.1007/978-3-319-89920-6

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…To overcome this issue, planning tools with increasing spatial resolutions are being developed (Hörsch et al, 2018), but with the associated drawback of requiring tremendous amounts of geo-referenced data inputs and a large computational effort. While the trend to publishing more openly available datasets offers a solution to the former challenge, recent efforts on the development of open-source solvers for high performance computers (e.g., PIPS-IPM++ (Breuer et al, 2018)) are a promising solution for the latter.…”

Section: Limitationsmentioning

confidence: 99%

To Prevent or Promote Grid Expansion? Analyzing the Future Role of Power Transmission in the European Energy System

et al. 2021

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Future energy supply systems must become more flexible than they are today to accommodate the significant contributions expected from intermittent renewable power sources. Although numerous studies on planning flexibility options have emerged over the last few years, the uncertainties related to model-based studies have left the literature lacking a proper understanding of the investment strategy needed to ensure robust power grid expansion. To address this issue, we focus herein on two important aspects of these uncertainties: the first is the relevance of various social preferences for the use of certain technologies, and the second is how the available approaches affect the flexibility options for power transmission in energy system models. To address these uncertainties, we analyze a host of scenarios. We use an energy system optimization model to plan the transition of Europe’s energy system. In addition to interacting with the heating and transport sectors, the model integrates power flows in three different ways: as a transport model, as a direct current power flow model, and as a linearized alternating current power flow model based on profiles of power transfer distribution factors. The results show that deploying transmission systems contribute significantly to system adequacy. If investments in new power transmission infrastructure are restricted—for example, because of social opposition—additional power generation and storage technologies are an alternative option to reach the necessary level of adequacy at 2% greater system costs. The share of power transmission in total system costs remains widely stable around 1.5%, even if cost assumptions or the approaches for modeling power flows are varied. Thus, the results indicate the importance of promoting investments in infrastructure projects that support pan-European power transmission. However, a wide range of possibilities exists to put this strategy into practice.

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Section: Limitationsmentioning

confidence: 99%

To Prevent or Promote Grid Expansion? Analyzing the Future Role of Power Transmission in the European Energy System

et al. 2021

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Error Bounds for Discrete-Continuous Free Flight Trajectory Optimization

Borndörfer

Danecker

Weiser

2023

J Optim Theory Appl

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Two-stage methods addressing continuous shortest path problems start local minimization from discrete shortest paths in a spatial graph. The convergence of such hybrid methods to global minimizers hinges on the discretization error induced by restricting the discrete global optimization to the graph, with corresponding implications on choosing an appropriate graph density. A prime example is flight planning, i.e., the computation of optimal routes in view of flight time and fuel consumption under given weather conditions. Highly efficient discrete shortest path algorithms exist and can be used directly for computing starting points for locally convergent optimal control methods. We derive a priori and localized error bounds for the flight time of discrete paths relative to the optimal continuous trajectory, in terms of the graph density and the given wind field. These bounds allow designing graphs with an optimal local connectivity structure. The properties of the bounds are illustrated on a set of benchmark problems. It turns out that localization improves the error bound by four orders of magnitude, but still leaves ample opportunities for tighter error bounds by a posteriori estimators.

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Front-Office Management of Service Operations with Robotic Process Automation

Negoiţă,

Borangiu

2023

2023 24th International Conference on Control Systems and Computer Science (CSCS)

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Operations Research Proceedings 2017

Cited by 4 publications

References 3 publications

To Prevent or Promote Grid Expansion? Analyzing the Future Role of Power Transmission in the European Energy System

To Prevent or Promote Grid Expansion? Analyzing the Future Role of Power Transmission in the European Energy System

Error Bounds for Discrete-Continuous Free Flight Trajectory Optimization

Front-Office Management of Service Operations with Robotic Process Automation

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