On Grid Modeling for Stability Assessment of Droop Voltage Control

Research output: Contribution to conferencesPaperContributedpeer-review


Distributed voltage control using Q(U)-characteristics is a means to facilitate higher penetrations of decentralized generation. However, stability concerns interfere the wider adoption of this technology. Based on a recent introduction of a robust stability criterion for assessment of droop-controlled inverters, this paper aims to improve the modeling of the grid from a control engineering point of view. After analyzing the impact of different types of voltage deviation on nodal voltage sensitivity, a more precise grid model is presented using algorithmic differentiation. The derived model is further implemented in a closed loop scheme for a Q(U)-controller. Considering in a first step of evolution solely a single input single output system the existing stability criterion could be improved in terms of accuracy.


Original languageEnglish
Publication statusPublished - 2019


Title2019 IEEE PES Innovative Smart Grid Technologies Europe
Abbreviated titleISGT-Europe 2019
Duration29 September - 2 October 2019
Degree of recognitionInternational event
LocationPolitehnica University of Bucharest

External IDs

Scopus 85075897089
ORCID /0000-0001-8439-7786/work/142244087
ORCID /0000-0002-3347-0864/work/142255166


DFG Classification of Subject Areas according to Review Boards

Subject groups, research areas, subject areas according to Destatis

Sustainable Development Goals


  • nodal sensitivity, renewable integration, stability criteria, distribution grid, Knotensensitivität, Integration erneuerbarer Energien, Stabilitätskriterium, Verteilnetz