Stability of DC Distribution Systems: An Algebraic Derivation

Energies

Pavol Bauer¹  Nils H. van der Blij¹  Laura M. Ramirez-Elizondo¹  Matthijs T. J. Spaan² 

[1] Department of Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, 2628 CD Delft, The Netherlands;Department of Software Technology, Delft University of Technology, Mekelweg 4, 2628 CD Delft, The Netherlands;

关键词: DC distribution;    eigenvalues;    sensitivity analysis;    stability;    state-space;   

DOI  :  10.3390/en10091412

来源: DOAJ

【 摘 要 】

Instability caused by low inertia and constant power loads is a major challenge of DC distribution grids. Previous research uses oversimplified models or does not provide general rules for stability. Therefore, a comprehensive approach to analyze the stability of DC distribution systems is desired. This paper presents a method to algebraically analyze the stability of any DC distribution system through the eigenvalues of its state-space matrices. Furthermore, using this method, requirements are found for the stability of three example systems. Additionally, a sensitivity analysis is performed, which considers the effect of several system parameters on the stability and disputes some overgeneralized conclusions of previous research. Moreover, various simulations are performed to illustrate the dynamic behavior of a stable and an unstable DC distribution system.

【 授权许可】

Unknown