Modeling harmonic amplification effects of modern household devices

Yanchenko, Sergey; Kulikov, Alexey; Tsyruk, Sergey

doi:10.1016/j.epsr.2018.05.021

Cited by 8 publications

(5 citation statements)

References 10 publications

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“…There are considerable financial losses associated with poor PQ, and thus associated with harmonics [61,62]. The harmonic currents generated by nonlinear loads decrease the power factor, which can be considered an indicator of the quality of the device's energy conversion and consequently distortion power.…”

Section: Discussionmentioning

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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Section: Discussionmentioning

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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“…In order to satisfy these requirements, three modelling methods were adopted in this paper, namely Limit Cycle Time Domain approach (LCTD) [10], Trapezoidal Method of Integration (TMI) [17] and Harmonic Domain (HD) method [18]. Previously developed models of household equipment [20][21][22][23][24] were represented as ODE systems of the standard form:…”

Section: Adopted Modeling Of Household Devicesmentioning

confidence: 99%

“…presents the model of single-phase induction motor[22]. The corresponding ODE system is based on representation of stator and rotor windings in dq-reference frame combined with motion and capacitor shift equations:…”

mentioning

confidence: 99%

A Simulation Tool for Accurate and Fast Assessment of Harmonic Propagation in Modern Residential Grids

Yanchenko

Strunz

2021

IEEE Trans. Power Delivery

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A simulation tool for modeling harmonic propagation in low voltage distribution networks with manifold nonlinear equipment is developed. The tool is based on a hybrid domain approach representing each nonlinear household device with accurate and fast white box model and the supply networkwith the harmonic admittance matrix in the frequency domain. Proposed tool features significant reduction of simulation time compared with the brute force time domain (BFTD) simulation, high level of accuracy as opposed to the traditional frequency domain methods and improved convergence under weak grid conditions in respect to conventional iterative harmonic analysis. Eventually this preconditions the use of the proposed approach in computationally intensive simulations, e.g. in stochastic harmonic modeling with the Monte Carlo method. Additionally two application examples of the developed tool are provided demonstrating its effectiveness compared to the BFTD modeling.

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“…Low power quality delivered has caused poor performance of electrical equipment and has created many technical and economic problems for customers. On the other hand, electrical power systems (EPS) are exposed to many electrical disturbances [4]. Power quality disturbances (PQD) that cause changes in the magnitude, phase, or frequency of voltage or current signals have raised concerns for industries and customers.…”

Section: Introductionmentioning

confidence: 99%

A novel approach for single and combined power quality disturbances detection using fundamental and harmonic phasors estimation model

Samadinasab

Jalilian

2022

IET Generation Trans & Dist

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The growing use of non‐linear loads is one of the main reasons for harmonic distortions in distribution systems. Power quality disturbances have caused improper performance of electrical equipment and have created many technical and economic problems for industries and customers. One approach to overcome these problems and also the correct detection of PQ disturbances is power quality monitoring (PQM). Measurement and estimation are two essential tools to understand and investigate PQ problems in distribution networks. Here, a new estimation model is used to simultaneously extract the fundamental and harmonic phasors information of the system. In other words, the proposed estimation model has been used to access system‐level data. Also, the recursive variational mode extraction (RVME) approach efficiency has been investigated for detecting power quality disturbances (PQDs). Finally, to validate the effectiveness of the proposed PQDs detection method, six different scenarios of disturbances are investigated. The IEEE 13‐bus and IEEE 34‐bus standard distribution test networks are used to evaluate the efficiency of the proposed method. Also, the real‐time PQ disturbances are used for validating the proposed PQDs detection method. Results obtained demonstrate the efficiency and high accuracy of the proposed approach in correctly diagnosing real‐time PQ disturbances.

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Modeling harmonic amplification effects of modern household devices

Cited by 8 publications

References 10 publications

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

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

A Simulation Tool for Accurate and Fast Assessment of Harmonic Propagation in Modern Residential Grids

A novel approach for single and combined power quality disturbances detection using fundamental and harmonic phasors estimation model

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