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Representation of transmission lines in modal domain using analytical transformation matrices
(2011-05-31)
The phases of a transmission line are tightly coupled due to mutual impedances and admittances of the line. One way to accomplish the calculations of currents and voltages in multi-phase lines consists in representing them ...
Influence of double excitation AC/DC in the reactive power demand of 3-phase transformers
(IEEE, 1999-12-01)
In this work it is discussed the performance of the reactive power demand in three-leg transformer core and three-phase transformer bank, under different conditions of AC/DC double excitation. In order to analyse the ...
Proposal of a simplified process to correct the phase decoupling using modal analysis
(2012-12-11)
Modal analysis is widely approached in the classic theory of transmission line modeling. This technique is applied to model the three-phase representation of conventional electric systems taking into account their self and ...
Configurable Software Performance Completions through Higher-Order Model Transformations
Chillies is a novel approach for variable model transformations closing the gap between abstract architecture models, used for performance prediction, and required low-level details. We enable variability of transformations ...
Fisher information and α-connections for a class of transformational models
(2000)
In this paper we use invariant theory for representations of groups in order to get an indirect method of computing the Fisher metric and the α-connections of transformational models parameterized by symmetric spaces. Among ...
Distribution Transformer Modeling for Application in Three-Phase Power Flow Algorithm
(Institute of Electrical and Electronics Engineers (IEEE), 2009-06-01)
In this paper, it is presented a methodology for three-phase distribution transformer modeling, considering several types of transformer configuration, to be used in algorithms of power flow in three-phase radial distribution ...
Distribution transformers modeling with angular displacement: actual values and per unit analysis
(Sociedade Brasileira de Automática, 2007-12-01)
In this work a detailed modeling of three-phase distribution transformers aimed at complementing well-known approaches is presented. Thus, incidence of angular displacement and tapping is taken into account in the proposed ...
Distribution Transformer Modeling for Application in Three-Phase Power Flow Algorithm
(Institute of Electrical and Electronics Engineers (IEEE), 2009-06-01)
In this paper, it is presented a methodology for three-phase distribution transformer modeling, considering several types of transformer configuration, to be used in algorithms of power flow in three-phase radial distribution ...
Distribution transformers modeling with angular displacement: actual values and per unit analysis
(Sociedade Brasileira de Automática, 2007-12-01)
In this work a detailed modeling of three-phase distribution transformers aimed at complementing well-known approaches is presented. Thus, incidence of angular displacement and tapping is taken into account in the proposed ...
Asymmetrical magnetization in three-phase core type transformers
(1995-12-01)
The performance of the three-phase core type transformers, under AC/DC double excitation is discussed in this work. It is presented a mathematical model that considers the mutual coupling between phases and the magnetic ...