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In the recent years there has been excessive use of nonlinear loads in power distribution network resulting in the injection of harmonics into the utility power system. The triplen harmonics due to non-linear loads circulate in the conventional delta-star distribution transformer resulting in excessive power losses. Star-star-delta_utilized transformer is a modified distribution transformer configuration...
Modern compact fluorescent lamps (CFLs) are reported to have very high levels of current total harmonic distortion, which may have strong negative impact on the quality of supply in distribution networks. This paper demonstrates how a novel circuit-based modelling approach can be used to investigate and quantify the effect of cancellation of harmonics between the groups of modern CFLs. The presented...
This paper presents a component-based modelling approach for developing time-varying harmonic current injection models of the residential load sector. Some initial results of the model are also presented to demonstrate the temporal variations in low-voltage (LV) residential harmonics. The level of detail afforded by the model is illustrated using the proliferation of compact fluorescent lamps as a...
This paper verifies the importance of load modeling for the harmonic assessment of power systems. Three different models are discussed, and the impact of each approach on the harmonic evaluation of power networks is highlighted. Through this discussion, a Harmonic Coupled Norton Equivalent (HCNE) model is pointed out as a suitable approach to represent the behavior of harmonic producing loads. A methodology...
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