Static Modeling of Microgrids for Load Flow and Fault Analysis

DAG B., BOYNUEĞRİ A. R., ATEŞ Y., Karakas A., NADAR A., Uzunoglu M.

IEEE TRANSACTIONS ON POWER SYSTEMS, vol.32, no.3, pp.1990-2000, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 3
  • Publication Date: 2017
  • Doi Number: 10.1109/tpwrs.2016.2613547
  • Journal Name: IEEE TRANSACTIONS ON POWER SYSTEMS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1990-2000
  • Keywords: Droop control, fault analysis, inverter, load flow, microgrid, static modeling, DISTRIBUTED-GENERATION, POWER-FLOW, 3-PHASE INVERTERS, DROOP CONTROLLER, CONTROL STRATEGY, RIDE-THROUGH, PART I, SYSTEMS, STABILITY, OPERATION
  • Yıldız Technical University Affiliated: Yes

Abstract

Inverter interfaced distributed generators (DGs) in microgrids have different characteristics and models that are not available in the existing conventional power flow analysis tools. This paper presents a static modeling approach for inverter interfaced DGs that can be applied for time spread load flow analysis and fault analysis of microgrids, including droop-based voltage controlled DGs. The static models have been derived from the common control schemes applied to inverter interfaced DGs, including the constraints emerging from droop control and reflect steady-state behaviors of inverters accurately. In addition to simplification of analysis procedure, the static models can provide a base for the analysis of microgrids with conventional numeric analysis tools. The presented static modeling approach has been validated comparatively with the dynamic modeling results of a test microgrid.