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Analysis Method of Power Flow in Urban Power Grid with Distribution Generation Based on Dynamic Probability Model

The change of wind power generation, photovoltaic power generation and power load reflects the regularity and randomness at the same time, which leads to a casual fluctuation of power flow in urban power grid with multiple generators. The static and dynamic probabilistic power flow model are compared and analyzed in this paper, the dynamic probabilistic model is adopted for simulating the characteristics of power flow in urban power grid with multiple DGs. The results show that the power flow of urban power grid changes not only regularly but also randomly. These two characteristics of power flow should be considered for power grid dispatching and control.