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Miguel F. M. Sampaio P.
Departamento de Engenharia Elétrica e de Compuação, Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, São Paulo
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Julio A. D. Massignan
Siemens AG, Grid Software, Curitiba
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Vitor H. P. de Melo
Departamento de Engenharia Elétrica e de Compuação, Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, São Paulo
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Benvindo R. Pereira
Departamento de Engenharia Elétrica e de Compuação, Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, São Paulo
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João Bosco A. London Jr.
Departamento de Engenharia Elétrica e de Compuação, Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, São Paulo
Keywords:
Volt-var, Load flow, Convergence, Voltage regulation, Smart inverter, Distributed generation, Distribution system
Abstract
The smart inverter function Volt-Var (VV) was proposed to mitigate one of the major impacts caused by distributed generation in Distribution Systems (DSs), overvoltage. Therefore, the operation and planning of the new DSs require robust VV modeling in the load flow calculation. In this context, this work presents a comparative study of the convergence process of the load flow calculation, considering two different VV models in the literature: the model used in the OpenDSS software and one based on the linearization of the QV curve. Simulation results in the IEEE 4 and 34 nodes test feeders expose the relevance of the relationship between the VV and QV curves and the scale factor in the convergence process and find that the OpenDSS model has a lower computational cost, however with a lower efficiency. Finally, possible improvements are proposed.
