Eletromagnetic transient analysis: the increment approach

Abstract:

The seminal work by Dommel in the late 1960s fostered what was considered the one of the greatest revolution in power system analysis. Both the high efficiency and robustness of the developed methodology enabled the release of several high-performance power systems computational tools, such as EMTP, ATP, PSCAD/EMTDC and others. Such tools have promoted the retirement of the old analog transient network analyzers and launched the power and control systems analysis in the digital age. Dommel’s approach evaluates the step-by-step evolution of both voltages and currents through an assembly of resistances and current sources network that take into account the history of these values in the last computed step. We here intend to reach the same goal as Dommel’s by evaluating the “increments” of both voltages and currents with an assembly of resistances and sources network that take into account the “increment” history of these values in the last step. While Dommel methodology uses the trapezoidal rule for time integration, our work proposes a parametrized integration rule. Hence, the user is able to choose such parameter to verify its impact on the accuracy and on the oscillation dumper.


Reference:
CARDOSO, José Roberto; SALLES, Mauricio B.C.; LOURENÇO, Luis Felipe N.; COSTA, Eduardo C.M.; PEREIRA FILHO, Mario Leite. Electromagnetic transient analysis : the increment approach. In: SIMPÓSIO BRASILEIRO DE MICROONDAS E OPTOELETRÔNICA, 18., CONGRESSO BRASILEIRO DE ELETROMAGNETISMO, 13., 2018, Santa Rita do Sapucai. Anais… 5 p.

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