Linear Iterative Power Flow Approach Based on the Current Injection Model of Load and Generator
IEEE Access, vol. 9, pp. 11543–11562
Abstract
Power flow (PF) is a fundamental tool for operation, automation and optimization of the power systems. Due to the nonlinearity of the PF system equations, the classical PF solutions are computationally very demanding. As a common approach in solving the nonlinear equations, linearization is a potential technique which can simplify and accelerate the PF calculations. In this context, this paper proposes a linear fast iterative method based on the fixed-point iteration technique in which a linearized model of generator along with a ZI load model are integrated in a simplified system of linear equations (SLE) of Yv=i . The relaxation method is used during the deriving process of generator equivalent current in this approach. However, the already developed ZI load model based on the curve-fitting technique has been exploited in this work. The accuracy of the proposed PF method has been compared with calculated results from DIgSILENT PowerFactory on the benchmark IEEE 33-bus test system and on a large medium voltage network in Germany.
Authors 4
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Affiliation as printed
Institute for Automation of Complex Power Systems, E.ON Energy Research Center, RWTH Aachen University, Aachen, Germany
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Antonello Monti Aachen Institute for Automation of Complex Power Systems E.ON Energy Research Center
Affiliation as printed
Institute for Automation of Complex Power Systems, E.ON Energy Research Center, RWTH Aachen University, Aachen, Germany
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Ferdinanda Ponci Aachen Institute for Automation of Complex Power Systems E.ON Energy Research Center
Affiliation as printed
Institute for Automation of Complex Power Systems, E.ON Energy Research Center, RWTH Aachen University, Aachen, Germany
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University of British Columbia
Affiliation as printed
The University of British Columbia, Vancouver, Canada
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