Co-Simulation of Power Transmission and Distribution Networks Using Dynamic Phasors

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Abstract
With a large number of distributed generators and other power electronic devices integrated into power transmission and distribution (T&D) networks, co-simulation is essential for the simulation of power networks which contain more details. Multiple modeling methods are employed for simulating large-scale T&D networks. Among them, dynamic phasor (DP) modeling is getting attention in the process of realizing the fast simulation, due to the benefits of having large time step and adopting parallel computation. This paper develops a model for co-simulation of power transmission and distribution networks by utilizing DP models. Besides, a test case of the T&D networks is employed to verify the accuracy and efficiency of the developed method both in steady state and fault conditions. The results indicate that the developed model for co-simulation improves the calculation efficiency under the condition of ensuring accuracy.

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