Real-Time Simulation of Three-Phase Transmission Lines Modeled in the Dynamic Harmonic Domain
Description
This paper presents a real-time simulation of transmission lines including harmonics in dynamic state. The Dynamic Harmonic Domain (DHD) transmission line model used in this work is based in a frequency-dependent line model in the phase domain. The advantages of using the DHD methodology are: its capability to accurately follow the harmonic content of a transient without the aid of a post-processing tool and its ability to serve as a visually active indicator of steady-state and transient condition in a signal. The DHD transmission line model is implemented in a real-time simulator in order to reduce the simulation time. The real-time simulation of an illustrative example, involving fast transients in transmission lines has been achieved with a maximum computation time of 0.5s on a step-size of 10 microseconds. The case study results were validated against those obtained through a time-domain off-line simulation.
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