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Time delay effects in the control of synchronous electricity grids

Böttcher, Philipp C. and Otto, Andreas and Kettemann, Stefan and Agert, Carsten (2020) Time delay effects in the control of synchronous electricity grids. Chaos. American Institute of Physics (AIP). ISSN 1054-1500

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Abstract

The expansion of inverter-connected generation facilities (i.e. wind and photovoltaics) and the removal of conventional power plants is necessary to mitigate the impacts of climate change. Whereas conventional generation with large rotating generator masses provides stabilizing inertia, inverter-connected generation does not. Since the underlying power system and the control mechanisms that keep it close to a desired reference state, were not designed for such a low inertia system, this might make the system vulnerable to disturbances. In this paper, we will investigate whether the currently used control mechanisms are able to keep a low inertia system stable and how this is effected by the time delay between a frequency deviation and the onset of the control action. We integrate the control mechanisms used in continental Europe into a model of coupled oscillators which resembles the second order Kuramoto model. This model is then used to investigate how the interplay of changing inertia, network topology and delayed control effects the stability of the interconnected power system. To identify regions in parameter space that make stable grid operation possible, the linearized system is analyzed to create the system's stability chart. We show that lower and distributed inertia could have a beneficial effect on the stability of the desired synchronous state.

Item URL in elib:https://elib.dlr.de/133235/
Document Type:Article
Additional Information:Bei der hochgeladenen Datei handelt es sich um die ArXiv-PDF der vom Journal akzeptierten Version. Die endgültige Veröffentlichung wird vorraussichtlich im Januar erfolgen.
Title:Time delay effects in the control of synchronous electricity grids
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Böttcher, Philipp C.Philipp.Boettcher (at) dlr.dehttps://orcid.org/0000-0002-3240-0442
Otto, AndreasChemnitz University of Technologyhttps://orcid.org/0000-0002-4086-5418
Kettemann, StefanJacobs Universityhttps://orcid.org/0000-0003-2214-9271
Agert, Carstencarsten.agert (at) dlr.dehttps://orcid.org/0000-0003-4733-5257
Date:2020
Journal or Publication Title:Chaos
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:American Institute of Physics (AIP)
ISSN:1054-1500
Status:Accepted
Keywords:delay differential equations, stability analysis, power systems, feedback control
HGF - Research field:Energy
HGF - Program:Technology, Innovation and Society
HGF - Program Themes:Renewable Energy and Material Resources for Sustainable Futures - Integrating at Different Scales
DLR - Research area:Energy
DLR - Program:E SY - Energy Systems Analysis
DLR - Research theme (Project):E - Systems Analysis and Technology Assessment
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Energy Systems Analysis
Deposited By: Böttcher, Philipp
Deposited On:09 Jan 2020 09:51
Last Modified:09 Jan 2020 09:51

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