The Study on Coordinated Control Strategy for Micro-Grid Containing Various Distributed Generators

Shuang Hu Wang; Yong Yi Wu; Hui Jun Zhao; Yu Feng Yang

doi:10.4028/www.scientific.net/AMR.773.199

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 773The Study on Coordinated Control Strategy for...

The Study on Coordinated Control Strategy for Micro-Grid Containing Various Distributed Generators

Abstract:

According to external dual power line supply and the grid-connected and islanded operating modes of micro-grid and the changeover among them, a control strategy of micro-grid with different kinds of DG (Distributed Generation) is proposed. It monitors the operating states of both micro-grid and power network and provides the unified coordinating control by the controller of micro-grid. In grid-connected mode, all kinds of DG work in constant power mode (P-Q mode) to generate power output for load. In islanded mode, energy storage system works in constant voltage-frequency mode (V-f mode), which is selected as the master power for supporting the voltage and frequency in micro-grid. And the rest works in P-Q mode. The application at one smart community in Shanghai proved its feasibility. The proposed strategy keeps the stable operation of micro-grid and implements the seamless transition between two operating modes by synchronizing device in grid-connected point.

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Periodical:

Advanced Materials Research (Volume 773)

Pages:

199-202

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.773.199

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Online since:

September 2013

Authors:

Shuang Hu Wang, Yong Yi Wu, Hui Jun Zhao, Yu Feng Yang

Keywords:

Coordinated Control Strategy, Distributed Generation (DG), Grid-Connected Mode, Islanded Mode, Microgrids (MGs)

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