2023 IEEE Belgrade PowerTech

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Methodology For Evaluating Equivalent Models For The Dynamic Analysis of Power Systems

The increasing penetration of distributed renewable energy sources drastically alters the dynamic characteristics of distribution networks (DNs). Therefore, several equivalent models have been recently proposed, to analyze more accurately the complex behavior of modern DNs. However, relatively simple models are still commonly used in practice for dynamic power system studies. In addition, dynamic equivalent models for DNs are sensitive to different operating conditions and there is lack of systematic understanding of their performance. Scope of this paper is to propose a methodology for identifying the applicability range in terms of accuracy and generalization capability of several conventional and newly developed equivalent models for the dynamic analysis of modern DNs. A set of metrics is used for the modelling accuracy assessment and a sensitivity analysis framework is introduced to fully quantify the generalization capabilities of DN equivalent models. Based on the above, guidelines and recommendations for the development of robust equivalent models for DN analysis are proposed.

Georgios Barzegkar-Ntovom
Democritus University of Thrace

Eleftherios Kontis
Aristotle university of thessaloniki

Theofilo Papadopoulos
Democritus University of Thrace

Panagiotis Papadopoulos
University of Strathclyde
United Kingdom


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