Harmonic balance analysis of home appliances power networks

Constantinescu, Florin; Gheorghe, Alexandru Gabriel; Marin, Mihai Eugen; Taus, Ovidiu Silviu

doi:10.1109/emes.2017.7980428

Cited by 12 publications

(12 citation statements)

References 4 publications

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“…In this case, the line is a 1 mm 2 cable with a length of 30 m, Rline = 1.08 Ω, and Lline = 72 μH. This model is described as follows [8]:…”

Section: Two Diode Rectifiermentioning

confidence: 99%

Perspective Chapter: Frequency Domain Models of Nonlinear Loads in Power Systems

Constantinescu,

Gabriel Gheorghe,

Eugen Marin

et al. 2023

Power Quality and Harmonics Management in Modern Power Systems

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Section 1 deals with harmonic current sources models for one diode and two diodes rectifiers, the model parameters being determined by simulations. Section 2 describes frequency domain (FD) models of nonlinear home appliances whose parameters are determined by measurements. Some FD models for the loads using firing angle control devices are presented in Section 3. The fourth section presents the simulations of a relatively large circuit in the time domain (TD) and in the FD using the algorithms of CADENCE and ADS. The HB analysis of ADS using the proposed FD models proves to be the most efficient for this example.

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“…In this case, the line is a 1 mm 2 cable with a length of 30 m, Rline = 1.08 Ω, and Lline = 72 μH. This model is described as follows [8]:…”

Section: Two Diode Rectifiermentioning

confidence: 99%

Perspective Chapter: Frequency Domain Models of Nonlinear Loads in Power Systems

Constantinescu,

Gabriel Gheorghe,

Eugen Marin

et al. 2023

Power Quality and Harmonics Management in Modern Power Systems

Self Cite

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“…When large amounts of such appliances operate in power distribution systems, the collective effect on the feeder power quality [54,55] has become a large concern to utilities. For predicting the harmonic current injection to the utility grid and implementing compensation technique, several theoretical models and simulations of nonlinear loads were conducted in the past decades [24]. The level of injected harmonic pollutions from a group of nonlinear loads of the same type operating simultaneously can be predicted by scaling the typical harmonic current spectrum of one load in proportion to total load power [52].…”

Section: Problem Descriptionmentioning

confidence: 99%

“…Currently, the increase of new technologies and the changing of conventional appliances to power electronic-driven appliances can be observed in residential and commercial buildings feeding from the LV distribution networks [18,24]. Modern power electronic-driven appliances can be divided into four groups (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Impact of Harmonic Currents of Nonlinear Loads on Power Quality of a Low Voltage Network–Review and Case Study

et al. 2021

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The paper presents a power-quality analysis in the utility low-voltage network focusing on harmonic currents’ pollution. Usually, to forecast the modern electrical and electronic devices’ contribution to increasing the current total harmonic distortion factor (THDI) and exceeding the regulation limit, analyses based on tests and models of individual devices are conducted. In this article, a composite approach was applied. The performance of harmonic currents produced by sets of devices commonly used in commercial and residential facilities’ nonlinear loads was investigated. The measurements were conducted with the class A PQ analyzer (FLUKE 435) and dedicated to the specialized PC software. The experimental tests show that the harmonic currents produced by multiple types of nonlinear loads tend to reduce the current total harmonic distortion factor (THDI). The changes of harmonic content caused by summation and/or cancellation effects in total current drawn from the grid by nonlinear loads should be a key factor in harmonic currents’ pollution study. Proper forecasting of the level of harmonic currents injected into the utility grid helps to maintain the quality of electricity at an appropriate level and reduce active power losses, which have a direct impact on the price of electricity generation.

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“…However, power quality can be compromised by new technologies and changing conventional equipment to power-electronic-driven appliances. Low-voltage distribution networks have been experiencing increasing penetration of distorting loads over the past few decades [2][3][4][5][6]. Modern electrical loads contain electronic power circuits in their topology, which can produce conducted emissions (propagated via power or signal wires into the electromagnetic environment) as they interact with power grid elements, such as loads, cables, transformers, etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Supply Voltage Variation on the Conducted Emission in the Frequency Range up to 150 kHz Injected into the Power Grid by CFL and LED Lamps—Case Study

Frydlewicz,

Michalec,

Kostyła

et al. 2024

Applied Sciences

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In normal operating conditions, the mains voltage level provided by low-voltage distribution networks follows time-varying patterns within permissible limits. The statistical characterisation of disturbances inserted into the power grid by nonlinear electrical devices is useful since operators are able to establish power quality limits and assess the residual capacity of networks for new smart installations, which may include a multitude of power electronic devices. Existing standards related to emission tests recommend using a power supply source in the measurement circuit with a nominal voltage parameter. However, the range of permissible variations of relevant supply voltage parameters may have an impact on conducted emissions. It can also be considered that the symptoms of supply voltage variations may manifest themselves differently depending on the equipment’s architecture and also the range of frequency observation with reference to harmonics and supraharmonics. The purpose of this study is to measure and analyze non-intentional conducted emissions injected into the power grid by lighting devices, methodically, by numbers of studies under different supply voltage conditions within two frequency bands. The emission is evaluated separately in two ranges: up to 2 kHz and 9-150 kHz. Obtained results show that the level of conducted emission introduced into the low voltage network by modern lighting sources like fluorescent and LED lamps varies with the supply voltage level compared to the emission generated in the nominal voltage level condition. Additionally, in the case of a spectrum of higher frequencies, some trends of shifting of the characteristic frequency bands are recorded. The potential of the obtained results is to complement the knowledge of the emission of modern lighting sources, which can be further used for digital models of these devices and to estimate the impact on the grid under real working conditions.

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Harmonic balance analysis of home appliances power networks

Cited by 12 publications

References 4 publications

Perspective Chapter: Frequency Domain Models of Nonlinear Loads in Power Systems

Perspective Chapter: Frequency Domain Models of Nonlinear Loads in Power Systems

Impact of Harmonic Currents of Nonlinear Loads on Power Quality of a Low Voltage Network–Review and Case Study

Influence of the Supply Voltage Variation on the Conducted Emission in the Frequency Range up to 150 kHz Injected into the Power Grid by CFL and LED Lamps—Case Study

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