Experimental and theoretical investigation of harmonic distortion in high voltage 3-phase transformers

Barkas, Dimitrios; Psomopoulos, Constantinos S.; Ioannidis, George Ch.; Kaminaris, Stavrοs D.; Malatestas, P.

doi:10.1049/cp.2014.1709

Cited by 2 publications

(1 citation statement)

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“…Harmonic power has also been widely discussed in the literature [16][17][18], with most recent studies focusing on the development of active filters to mitigate the effects of harmonic components [19][20][21][22][23][24]. Other research focuses on the development of techniques to assess and differentiate the harmonic contribution of customers and networks [25,26].…”

Section: Introductionmentioning

confidence: 99%

Formulation of the Phasors of Apparent Harmonic Power: Application to Non-Sinusoidal Three-Phase Power Systems

et al. 2018

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In this work, the expression of the phasor of apparent power of harmonic distortion is formulated in the time domain. Applying this phasor along with the phasor of apparent unbalance power allows us to obtain a new set of phasors that include all of the inefficient power components appearing in the transfer of energy in non-linear and unbalanced systems. In this manner, a new model of inefficient power in electrical systems is developed. For each voltage harmonic of order 'm' and current harmonic of order 'n', a phasor of harmonic apparent power is obtained. Accuracy in the determination of the total apparent power of a system depends on the number of harmonics considered. Each phasor of apparent harmonic power is formed from six mutually orthogonal parameters or components that are calculated from the harmonic voltages at the nodes of the network and the circulating harmonic currents. To demonstrate the validity of the proposed formulation, a four-wire non-linear system formed by two nodes is assessed.

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