Development of Dependable Wideband Computer Models for Power System Components

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The growing complexity of power systems makes it necessary to use accurate, highly portable and generalized component models in simulators to assess system response under normal and abnormal operating conditions. The full frequency dependent models are needed for higher accuracy in the assessment of switching and lightning induced overvoltages, short-circuit currents, harmonics and resonance conditions. The principal short-term objective of this research proposal is the development of dependable wideband models for transmission lines, cables and network equivalents. It is targeted to introduce more comprehensive, numerically stable, accurate and computationally efficient models than the presently available models in the academic literature and/or professional grade software. This proposal will provide a step forward in advanced and precise simulation of power systems. Transmission lines and cables are key components in power systems and have significant impact on computing time and precision of power system simulators. The wideband modeling of these components is more important than in the past with increased penetration of power electronics based components in power systems, HVDC connections, long high voltage AC cable installations and wind park grids connected through cables. Improved performance and precision of line and cable models will help improve efficiency of the system and reduce design costs.