A new distributed measurement index for the identification of harmonic distortion and/or unbalance sources based on the IEEE Std. 1459 framework

Vallés, Alejandro Pérez; Revuelta, Patricio Salmerón

doi:10.1016/j.epsr.2019.03.007

Cited by 10 publications

(6 citation statements)

References 12 publications

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“…Thus, the simple combined approach for forecasting the level of harmonic current injection to the utility grid is not proper anymore [57]. Therefore, a composite approach is required, which takes into account different nonlinear load types placed in the PCC at the same time [58].…”

Section: Problem Descriptionmentioning

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: Problem Descriptionmentioning

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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“…Among the most relevant investigations in this field are those related to methods of compensating for voltage imbalances in the low-voltage networks of domestic consumers, produced mainly by the connection of single-phase devices in three-phase networks such as photovoltaic installations, batteries, and electric vehicle chargers, among others [5][6][7][8][9]. Another field of study is the determination of the location where imbalances are generated in a three-phase electrical network [10]. However, among the most outstanding studies are the effects produced by voltage unbalances in different types of loads, particularly in three-phase induction motors.…”

Section: Introductionmentioning

confidence: 99%

Improved Method for Determining Voltage Unbalance Factor Using Induction Motors

Guasch-Pesquer

Garcia-Rios²,

Jaramillo-Matta

et al. 2022

Energies

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This work shows an alternative method to determine the Voltage Unbalance Factor in a power grid by using both the mean value of the line voltages and Current Unbalance Factor in induction motors. Twenty unbalanced voltage points on three induction motors were used in order to compare the two methods. The influence of the measurement error of both the voltmeters and the ammeters on the resulting Voltage Unbalance Factor was studied, and the validation was made with laboratory data for one of the three motors analyzed, in addition to the simulations carried out. The proposed Voltage Unbalance Factor was compared with the most typical method in the standards to obtain this factor, showing that the proposed factor has a better approach than the standard factor to determine the value of the Voltage Unbalance Factor in an unbalanced power system.

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“…With the growing application of nonlinear loads and distributed generators, the power system is faced with an increasingly severe harmonic pollution [1][2]. To solve the problem, it is imperative to clarify the responsibilities for the pollution and differentiate the harmonic emission levels between the supply system and the consumer [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…In relevant studies, the harmonic emission level is mainly evaluated based on the harmonic contributions of the supply system and the consumer at the point of common coupling (PCC) [7][8][9][10]. Many evaluation methods have emerged, including Kalman filter [11][12], harmonic state estimation [13], k-nearest neighbors (kNN) algorithm [14], empirical mode decomposition [15] and distributed measurements [6]. In practice, however, the harmonic emission level is generally evaluated by statistical methods [16].…”

Section: Introductionmentioning

confidence: 99%

An Evaluation Method for Harmonic Emission Level Based on Principal Component Regression

Wang¹,

Wang²,

Wu³

et al. 2019

EJEE

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To identify the responsible party of harmonic pollution, this paper puts forward a novel estimation method for harmonic emission level based on principal component regression (PCR). After introducing the principles of the PCR, the author set up a regression equation based on the complex relationship between harmonic voltage, harmonic current and harmonic impedance of the supply system at the point of common coupling (PCC). Then, the PCR was introduced to estimate the harmonic emission levels of the supply system and the consumer at the PCC. The validity of our method was verified through both simulation and field test. The results show that our method can accurately estimate the harmonic emission level, while overcoming the multicollinearity of independent variables and retaining important information in regression.

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A new distributed measurement index for the identification of harmonic distortion and/or unbalance sources based on the IEEE Std. 1459 framework

Cited by 10 publications

References 12 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

Improved Method for Determining Voltage Unbalance Factor Using Induction Motors

An Evaluation Method for Harmonic Emission Level Based on Principal Component Regression

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