Abstract
The power grid is an artificial network. Studying the complex power grid with distributed generation is of great significance to people's life, production and social stability. This paper studies synchronous and operational reliability of power grid when distributed generation enter the network from the dynamic point of view. It is found that the more the power output of distributed generation is, the more easy the power grid is to synchronize and the stronger the resistance to disturbance when distributed generation is connected to a single power grid. When distributed generation is connected to interconnected power grids through small degree load nodes or a large sub network, the synchronization capability of interconnected power grids will be enhanced. No matter single power grid or interconnected power grids, the more distributed generation connected to the grid there are, the more the synchronization ability of power grid will be improved.
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