Stability analysis of microgrids with multiple der units and variable loads based on MPT

Yan Li, Wenzhong Gao, Jiuchun Jiang

Research output: Contribution to journalConference article

8 Scopus citations

Abstract

Generation dynamics and load dynamics plays an important role in the small signal stability analysis of Microgrids, especially for the islanded operation mode. It is essential for a Microgrid to maintain small signal stability characteristics under small changes of operating conditions caused by generation variations or load fluctuations. In this paper, a novel approach based on matrix perturbation theory (MPT) is proposed for the computation of eigen-solutions in a perturbed Microgrid system. Rigorous theoretical analysis is conducted on the distinct and multiple eigenvalues and their corresponding eigenvectors respectively under perturbations of generation or load. The computational flowchart of the system eigen-solutions is then proposed, aimed at obtaining eigenvalues and eigenvectors of a perturbed system without solving an eigenvalue problem repeatedly. Finally, the effectiveness of the matrix perturbation based approach for eigen-solutions' analysis are tested via a low-voltage Microgrid prototype.

Original languageEnglish (US)
Article number6939345
JournalIEEE Power and Energy Society General Meeting
Volume2014-October
Issue numberOctober
DOIs
StatePublished - Oct 29 2014
Event2014 IEEE Power and Energy Society General Meeting - National Harbor, United States
Duration: Jul 27 2014Jul 31 2014

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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