A New Flicker Contribution Tracing Method Based on Individual Reactive Current Components of Multiple EAFs at PCC

Altıntaş, Erinç; Salor, Özgül; Çadırcı, I.; Ermiş, M.

doi:10.1109/tia.2010.2058835

Cited by 32 publications

(9 citation statements)

References 7 publications

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“…Considering the above-mentioned case study, it is easily seen that the previous methods [12,13] are not suitable for all the conditions in a real electric power system. Since the main load in the meat plant is an alternating current (AC) drive and its power factor is high, it is not possible to obtain flicker contribution directly from reactive current components of the plant at the PCC.…”

Section: Problem Definitionmentioning

confidence: 99%

“…In order to obtain the FCR of the load, WEE I ON is extracted from WEE U OFF and rated to WEE I ON . Thus, the FCR of the load can be obtained as defined in (13). By using this equation, the FCR of the simulated loads as well BDC and ASC are then calculated and tabulated respectively, as follows:…”

Section: Signals Taken From Real Field Measurementsmentioning

confidence: 99%

“…A flicker contribution method using reactive currents of electrical arc furnaces (EAFs) was suggested in [13]. The voltage drop was calculated using individual reactive current components and power system source impedance, and then this voltage value was processed as the input of the IEC flicker meter.…”

Section: Introductionmentioning

confidence: 99%

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Wavelet entropy and its application for flicker contribution evaluation

Silsüpür

Türkay

2018

IEEJ Transactions Elec Engng

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As a result of the integration of various new load types and generation units into electric power systems, power quality disturbances such as sag–swell, harmonics, inter‐harmonics, and flicker have come into focus in the last decades. Among these disturbances, flicker is one of the serious power quality issues for both power system operators and users. In addition to having direct effects on human life such as the discomfort caused by visual disturbance, flicker may cause incorrect operations of electrical devices. Furthermore, finding a dominant flicker source in order to mitigate it and supply high‐quality power to users are the main tasks of network operators. The measurement of the flicker level is defined in the IEC 61000‐4‐15 standard as measured by a flicker meter; however, it deals only with voltage signals and is not sufficient to understand the contribution of the load and background power systems separately. Therefore, this paper proposes new approaches to the evaluation of flicker characteristics using simulated and real signals. The novelty of this paper is that it investigates the flicker characteristics in the light of multi‐resolution wavelet analysis and information‐theory‐based wavelet energy entropy analysis together and proposes a new index to interpret flickers' responsibility in load and flicker source detection. The proposed method uses only voltage and current signals and does not require additional calculation of any network parameter such as the system impedance. The proposed method is validated by simulations as well as site measurements, and the results show the accuracy and suitability of the proposed method. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Problem Definitionmentioning

confidence: 99%

Section: Signals Taken From Real Field Measurementsmentioning

confidence: 99%

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Wavelet entropy and its application for flicker contribution evaluation

Silsüpür

Türkay

2018

IEEJ Transactions Elec Engng

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“…A flicker contribution method using reactive currents of electrical arc furnaces (EAFs) was suggested by the authors in Ref. [10]. Using individual reactive current components and power system source impedance, a voltage drop is obtained, which is then applied to the IEC flicker meter.…”

Section: Introductionmentioning

confidence: 99%

A new approach for flicker analysis using information‐theory‐based wavelet energy entropy

Silsüpür

Türkay

2017

IEEJ Transactions Elec Engng

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Flicker is one of the critical power quality disturbances seen in power distribution networks nowadays. Besides its effects on the human life, it causes malfunctioning and misoperation of sensitive electrical equipment. The measurement of the flicker level is defined in IEC 61000‐4‐15 standard by a flicker meter, which deals only with voltage signals and is not sufficient to understand the contribution of the load and background power systems separately. Therefore, in this letter we present a new approach to the evaluation of flicker characteristics in the light of multiresolution wavelet analysis and information‐theory‐based wavelet energy entropy analysis together. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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“…Although the studied system is small, complex equa tions have been derived that cannot be generalized to another power system. In [20], current of flicker loads in same busbar have been measured and effect of each load has been separated. However network with dis tributed flicker sources has not been investigated.…”

Section: Introductionmentioning

confidence: 99%

K-means clustering and correlation coefficient based methods for detection of flicker sources in non-radial power system

Dejamkhooy

Dastfan

Ahmadifard

2014

Russ. Electr. Engin.

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Nowadays electric power quality problems such as flicker (voltage fluctuation) are major concern of electric companies and industrial consumers. Identification of flicker sources is an important stage in cus tomers convincing and in flicker reduction process. For equal fluctuation frequency of flicker sources, detec tion of coupling points of these sources is not an easy task. In this paper, voltage envelope is extracted by Enhanced Phase Locked Loop (EPLL), which acts as a nonlinear adaptive filter, and then the amplitude of flicker tone is used as a flicker index. The power system with arbitrary flicker sources is assumed and simulated to generate a set of training data. Then two methods based on K means clustering algorithm and correlation coefficient are introduced to identify the location of flicker sources in a non radial power system. Using pro posed methods location of flicker sources with similar fluctuation frequency in non radial power system is determined. In a typical test system, several simulations have been conducted. The simulation results show the performance of the proposed method is very promising and flicker sources can be detected tolerably.

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A New Flicker Contribution Tracing Method Based on Individual Reactive Current Components of Multiple EAFs at PCC

Cited by 32 publications

References 7 publications

Wavelet entropy and its application for flicker contribution evaluation

Wavelet entropy and its application for flicker contribution evaluation

A new approach for flicker analysis using information‐theory‐based wavelet energy entropy

K-means clustering and correlation coefficient based methods for detection of flicker sources in non-radial power system

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