Comprehensive Control Strategy and Simulation Research on Micro Grid

Abstract:

Micro grid can integrate various distributed generators and provide local load with green energy. Therefore, it becomes a hot spot of research in every country all over the world. Due to small inertia, large number of models, big difference among internal electric sources of Micro grid operation, it is more difficult to keep stabilization of voltage frequency of common points in the network, and more complicated to control the problems. The article puts forward the improved droop control strategy based on distributed power supply layer, on the basis of traditional droop control, it increases the feed forward regulation mechanism so as to change the droop coefficient, increase the power regulation scope, speed up the common point frequency voltage stability and improve the control precision, which has realized the specific control of power output when the Micro grid synchronizes and closes, as well as the purpose of power distribution according to load demand for islanding. Finally, we use power system simulation software PSCAD/EMTDC V4.4 to verify the practicability of the proposed scheme.

• Periodical: Applied Mechanics and Materials (Volumes 602-605)
• Pages: 2609-2614
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.602-605.2609
• Online since: August 2014
• Authors: Yu Long Wang*
• Keywords: Control Strategy, Distributed Generation (DG), Microgrids (MGs), Simulation

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