Integrated Control and Power Sharing of Distributed Generators in Islanded and Grid-Connected Microgrids

Please enable javascript in your browser.

Nokhbehzaeem, Javad | 2015

561 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 48021 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Parniani, Mostafa
Abstract:
Distributed generation (DG) technologies have achieved an intense progress during the last years. One of the appropriate ways to enter a DG system in the electrical network is through the use of microgrids. Because the majority of DG units are connected to the grid with power electronic converters, specific control strategies have been developed for these converters. Control strategies of DGs in microgrid differ in the grid-connected and the islanded states of operation. Changing the control modes from one state to another requires a reliable islanding detection method, and results in unwanted transients. It is, therefore, desirable to devise an integrated control approach for both states. In this thesis an improved control scheme based on droop characteristic control is proposed. The Proposed method allows the converter to work in both islanded and grid connected modes. Finally, the efficiency and performance of the proposed method in different states is assessed and compared with the conventional droop strategy
Keywords:
Microgrid ; Distributed Generation ; Islanding Operation ; Grid Connected State ; Integrated Control

No TOC