Series capacitor-compensated double-circuit transmission line directional relay system using a fuzzy expert system with a Haar wavelet

Kumar, A. Naresh; Sitharamaiah, N.; Chakravarthy, M.

doi:10.1007/s42044-021-00097-z

Cited by 2 publications

(3 citation statements)

References 36 publications

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“…Comparing between the conventional and the presented method for D6 is performed by calculating the difference d for the source current by Equation (19). It is noted that the conventional method gives an exact value (i exact ) in comparison to the presented method that is a numerical approximation (i approximated ).…”

Section: Comparison Of the Simulation To Conventional Methodsmentioning

confidence: 99%

“…network analysers and oscilloscopes) or education remains yet a slowly progressing aspect. Indicative recent advances are in applications such as digital audio signal processing [16], reactive elements circuit analysis [17], time-variant circuits [18,19], fault detection in linear circuits [20] and promising theoretical analyses such as the work by Ratas et al [21] for solving non-linear boundary values. Finally, a more complete summary of wavelet types and transforms as well as modern concepts and applications can be found in works such as the book by Akujuobi [22].…”

Section: Introductionmentioning

confidence: 99%

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Simulation of a non‐linear, time‐variant circuit using the Haar wavelet transform

Roumeliotis

Desmet

Knockaert

2022

IET Science Measure & Tech

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Wavelet theory has disentangled numerous complexities, including those pertinent to transient and steady‐state responses of systems, when Laplace and Fourier transforms face insoluble obstacles. Reactive linear components (e.g. inductors and capacitors) are typically handled in the frequency plane. Non‐linear (e.g. diodes) or time‐variant components (e.g. switches) are conventionally simulated in the time plane (e.g. a diode via its I–V characteristic) and are considered open or short circuits in AC analyses (e.g. in circuit simulation software). Although translating circuits in an alternative plane, such as the Haar wavelet plane, significantly simplifies the process, a wide integration of wavelets into instruments and education is not yet realised; an underlying reason is the considerate complexity of applying wavelet theory to circuits and signals. The aim of this paper is to bridge this gap, providing a new user‐friendly, Laplace‐alike approach, utilising measurement‐based models and the Haar wavelet. The Haar wavelet transform and a numerical method for the inverse Laplace transform which uses the Haar operational matrix are applied, to calculate the total current of a non‐linear, time‐variant system, that is the total current of a voltage source which powers a non‐linear, time‐variant load.

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Section: Comparison Of the Simulation To Conventional Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation of a non‐linear, time‐variant circuit using the Haar wavelet transform

Roumeliotis

Desmet

Knockaert

2022

IET Science Measure & Tech

View full text Add to dashboard Cite

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“…The search space can be understood as the region and transformation mode between the reference image and the image to be recorded [9][10].…”

Section: Remote Sensing Technologymentioning

confidence: 99%

UHV transmission line monitoring based on satellite remote sensing

Zhang,

Shen

et al. 2023

International Conference on Image, Signal Processing, and Pattern Recognition (ISPP 2023)

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UHV transmission lines have problems such as high impedance and low loss. This paper mainly introduces the monitoring method of UHV transmission and distribution line based on satellite remote sensing technology, aiming at avoiding or reducing property losses caused by line problems and maintaining people's normal life. In this paper, the experimental system construction and quantitative analysis methods are mainly used, and the results of two kinds of line detection are compared by comparison. The experimental data shows that in different types of fault lines, the test time of fault is within 0.1s.

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Series capacitor-compensated double-circuit transmission line directional relay system using a fuzzy expert system with a Haar wavelet

Cited by 2 publications

References 36 publications

Simulation of a non‐linear, time‐variant circuit using the Haar wavelet transform

Simulation of a non‐linear, time‐variant circuit using the Haar wavelet transform

UHV transmission line monitoring based on satellite remote sensing

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