Stability Assessment of a DC Distribution Network in a Hybrid Micro-Grid Application

Author

Shamsi, Pourya ; Fahimi, B.

Author_Institution

Dept. of Electr. Eng., Missouri Univ. of Sci. & Technol., Rolla, MO, USA

Volume

5

Issue

5

fYear

2014

fDate

Sept. 2014

Firstpage

2527

Lastpage

2534

Abstract

This paper studies the stability analysis of a dc distribution network in a hybrid micro-grid. A micro-grid with ac and dc distribution networks based on multi-port power electronic interfaces (MPEIs) is conceptualized. Afterwards, an extended averaging method for modeling systems with multiple switching converters is introduced. Using this method, the dc distribution network is modeled. Furthermore, the stability assessment of this network is performed using pole-zero analysis of the small-signal model. Simulation results and experimental measurements are provided to validate the stability assessment of the hybrid micro-grid.

Keywords

distributed power generation; distribution networks; poles and zeros; power system stability; switching convertors; MPEI; ac distribution networks; dc distribution network; extended averaging method; hybrid microgrid; modeling systems; multiple switching converters; multiport power electronic interfaces; pole-zero analysis; small-signal model; stability analysis; stability assessment; Harmonic analysis; Mathematical model; Power electronics; Power system stability; Stability analysis; Switching frequency; DC distribution network; extended averaging method; hybrid micro-grid; multi-port power electronic interface (MPEI); small-signal pole-zero analysis; smart-grid; stability;

fLanguage

English

Journal_Title

Smart Grid, IEEE Transactions on

Publisher

ieee

ISSN

1949-3053

Type

jour

DOI

10.1109/TSG.2014.2302804

Filename

6880421