Abstract
This work presents a hybrid simulation tool that combines fast analysis of transient stability programs with accurate results of electromagnetic transients ones to evaluate the dynamic behavior of transmission power systems with high penetration of power electronic-based devices. The interaction between the two programs is performed by controllable current and voltage sources, which are used to interface external and detailed systems. The double second order generalized integrator is used to extract the positive-sequence phasor to transfer information between the environments. A local network server controls the data communication between the two simulation environments by means of the TCP/IP protocol. In the present paper, the proposed tool is used to simulate the integration of a aggregate wind power plant, based on a doubly-fed induction generator, into a 29-bus electrical network. Results and computational timings are then compared with the ones obtained with an electromagnetic transients program, demonstrating the accuracy and speed of the proposed strategy.
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