A new vector draft method for harmonic source detection at point of common coupling

Abdullah, Abdul Rahim; Peng, G. Z.; Ghani, Sulaiman Ab; Jopri, Mohd Hatta

doi:10.1109/peoco.2014.6814409

Cited by 17 publications

(15 citation statements)

References 13 publications

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Section: Introductionmentioning

confidence: 99%

“…In this context of concept diversity, a number of studies are based on mathematical resources, statistics, and artificial intelligence for determining the main sources that cause distortions in electric systems. Emphasis is given to the point that, in general, most of the procedures proposed along these lines of research commit themselves only to detecting disturbance sources, without establishing levels of responsibility . Furthermore, when proposing harmonic sharing, many studies do not worry about demonstrating, in an effective manner, the connection between their results and the physical principles associated with the problem, a fact that makes recognition of the effectiveness of these proposals difficult …”

Section: Introductionmentioning

confidence: 99%

“…Emphasis is given to the point that, in general, most of the procedures proposed along these lines of research commit themselves only to detecting disturbance sources, without establishing levels of responsibility. [5][6][7] Furthermore, when proposing harmonic sharing, many studies do not worry about demonstrating, in an effective manner, the connection between their results and the physical principles associated with the problem, a fact that makes recognition of the effectiveness of these proposals difficult. 3,4 On the other hand, there exist propositions [8][9][10][11][12][13][14][15] supported directly by physical phenomena that are involved in the question.…”

Section: Introductionmentioning

confidence: 99%

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Capacitor switching methodology for responsibility sharing of harmonic voltage distortions

Santos

Oliveira

2019

Int Trans Electr Energ Syst

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Summary In the context of the electric power quality, there is not a definitive consensus about the theme sharing of responsibility concerning harmonic distortions. This paper presents a new methodological proposal, based on capacitors switching, which contributes effectively to the scientific breakthroughs needed to close this challenging issue. Following a discussion of the physical concepts that make up the basis of the method, its performance is investigated through two case studies. At first, the tests for the application of the proposed procedure were performed by means of computer simulations, which involved a large‐scale electric system. After this step, laboratory tests were carried out in a setup that maintained a structure very close to that simulated, however, on a reduced scale. In both situations, the results found indicated the consistency of the proposed method, which, due to its robustness and simplicity, has great potential in terms of its application to power systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Capacitor switching methodology for responsibility sharing of harmonic voltage distortions

Santos

Oliveira

2019

Int Trans Electr Energ Syst

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“…Moreover, a state estimation method is introduced with the implementation of least square and Kirchhoff current law [11]. However, a study [12], showed that state estimation technique requires numerous measurement devices and unreasonable setup cost for the large power system. Furthermore, in the literature, the identification of harmonic sources using critical impedance technique has also been discussed [13]- [15].…”

Section: Introductionmentioning

confidence: 99%

An Improved of Multiple Harmonic Sources Identification in Distribution System with Inverter Loads by Using Spectrogram

Jopri

Abdullah

Manap

et al. 2016

IJPEDS

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This paper introduces an improved of multiple harmonic sources identification that been produced by inverter loads in power system using time-frequency distribution (TFD) analysis which is spectrogram. The spectrogram is a very applicable method to represent signals in time-frequency representation (TFR) and the main advantages of spectrogram are the accuracy, speed of the algorithm and use low memory size such that it can be computed rapidly. The identification of multiple harmonic sources is based on the significant relationship of spectral impedances which are the fundamental impedance (Z1) and harmonic impedance (Zh) that extracted from TFR. To verify the accuracy of the proposed method, MATLAB simulations carried out several unique cases with different harmonic producing loads on IEEE 4-bus test feeder cases. It is proven that the proposed method is superior with 100% correct identification of multiple harmonic sources. It is envisioned that the method is very accurate, fast and cost efficient to localize harmonic sources in distribution system.

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“…With an alternate approach utilizing two-points measurement approach, the author had proposed another technique by comparing the first measurement at the PCC and the second measurement at the HPS by using spectrogram method [16]. This approach gives a right data, nevertheless too expensive and difficult to be executed [17]. In common practice, where accuracy, precision and quick measurement are required, these procedures do not give the adequate result.…”

mentioning

confidence: 99%

A Fast Localization of Multiple Harmonic Sources for Rectifier Loads by Utilizing Periodogram

et al. 2017

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This paper introduces a fast method to localize the multiple harmonic sources (MHS) for rectifier based loads in power distribution system by utilizing periodogram technique with a single-point measurement approach at the point of common coupling (PCC). The periodogram is a fast and Keywords: multiple harmonic sources identification, periodogram, rectifier load, spectral impedanceCopyright © 2017 Universitas Ahmad Dahlan. All rights reserved. IntroductionIt is vital in the harmonic analysis to identify the multiple harmonic sources with a particular target to manage the issue associated with harmonic disturbances [1]. This issue continues stretching out because of the present improvement, and changes of past conventional power system loads into modern power electronic gadgets for instance, inverter, rectifier loads and known as a harmonic producing source (HPS) [2]. In the real power distribution system, MHS can be found at upstream and downstream at the point of common coupling (PCC) [3]. Distinctive procedures in order to identify MHS have been studied in numerous research. With respect to least square and Kirchhoff's current law, state estimation strategy is presented [4]. Nonetheless, state estimation method requires numerous transducer for measurement purposes and too costly [5]. In the meantime, the earliest method to identify the MHS is utilizing power direction method, in any case this method speculatively, not precise when some harmonics and current phase angle is more than 90° [6]. To overcome this problem, a critical impedance method is introduced [7]. However, the procedure requires correct data of internal impedances of utility and customer side, meanwhile in practice it is hard to quantify these impedances values [8]. A harmonic current vector technique has additionally been proposed to fix these issues [9][10][11], whereby the estimation of the harmonic contribution with no need of exact date of client impedances. Nonetheless, it requires long estimation calculation of harmonic contributions and difficult to measure harmonic impedance at client side with a specific end goal to identify the MHS. In the previous study [12][13][14], a strategy known as harmonic source estimation is proposed utilizing Bayesian estimation and harmonic state estimation (HSE). This technique infers a high computational complexity and required the very high cost of distributed measurement system setup [15]. With an alternate approach utilizing two-points measurement approach, the author had proposed another technique by comparing the first measurement at the PCC and the second measurement at the HPS by using spectrogram method [16]. This approach gives a right data, nevertheless too expensive and difficult to be executed [17]. In common practice, where accuracy, precision and quick measurement are required, these procedures do not give the adequate result. This paper proposes multiple harmonic source identification utilizing single-point estimation using periodogram, a new approach for identifying MHS with good a...

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A new vector draft method for harmonic source detection at point of common coupling

Cited by 17 publications

References 13 publications

Capacitor switching methodology for responsibility sharing of harmonic voltage distortions

Capacitor switching methodology for responsibility sharing of harmonic voltage distortions

An Improved of Multiple Harmonic Sources Identification in Distribution System with Inverter Loads by Using Spectrogram

A Fast Localization of Multiple Harmonic Sources for Rectifier Loads by Utilizing Periodogram

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