Search

Your search keyword '"Saleh, S. A."' showing total 7 results
Start Over Author "Saleh, S. A." Journal ieee transactions on power delivery
7 results on '"Saleh, S. A."'

2. Performance Assessment of Frequency Selective Grounding for Grid-Connected Photovoltaic Systems

Author

Saleh, S. A., Kanukollu, Saikrishna, and Al-Durra, Ahmed

Abstract

Photovoltaic (PV) panels and their grid-connection circuitries have to be grounded to comply with various standards and industrial codes. Objectives of grounding a PV system include limiting ground currents and potentials, supporting the operation of protective devices therein, and preventing the accumulation of static charges on PV panels. These objectives can be translated into design constraints for an impedance to connect a PV system to the ground. This paper presents the design and performance assessment of a frequency selective grounding (FSGR) for grid-connected PV systems. The proposed FSGR is composed of a parallel $R$, $L$, and $C$ circuit, which provides a resistive path for dc currents and a low capacitive impedance path for harmonic currents. The FSGR is designed and experimentally tested for a 2 kW, $3\phi$, laboratory grid-connected PV system under fault and non-fault conditions. The performance of the proposed grounding is also compared with the solid grounding under similar conditions to further assess its capabilities. Experimental results show that the FSGR can reduce ground currents, limit ground potentials, and reduce the dc leakage currents. These observed features are complimented with minor effects on the operation of protective devices in a grid connected PV system.

Published
2023
Full Text
View/download PDF

6. A New Transient Model for Three-Phase Power Transformers Using a Wavelet Filter Banks.

Author

Saleh, S. A. and Rahman, M. A.

Subjects
*EDDY currents (Electric), *ELECTRIC transients, *ELECTRIC currents, *DIGITAL electric filters, *ELECTRIC transformers, *WAVELETS (Mathematics)
Abstract

This paper presents a model for three-phase power transformers for electromagnetic transient studies, which employs a wavelet filter bank. In this model, both the primary and the secondary windings are represented by stages of a wavelet filter bank, where each turn is represents by one complete stage. The sum of responses of all stages forms the transformer total response. Using the wavelet filter bank model eddy currents, leakage flux and thrush currents have been simulated. In addition, the proposed model has been found to be suitable for simulating different cur- rents with various transient components including inrush and high frequency effects. [ABSTRACT FROM AUTHOR]

Published
2005
Full Text
View/download PDF

7. Modeling and Protection of a Three-Phase Power Transformer Using Wavelet Packet Transform.

Author

Saleh, S. A. and Rahman, M. A.

Subjects
*ELECTRIC transformers, *WAVELETS (Mathematics), *PROTOTYPES, *ALGORITHMS, *ELECTRIC currents, *ELECTRIC motors
Abstract

This paper introduces a novel algorithm for differential protection of three-phase power transformers that is based on the wavelet packet transform. The wavelet packet transform is employed to extract certain features of the differential current to distinguish between the magnetizing inrush and different internal fault currents. The selection of the optimal wavelet analysis that includes selecting both the optimal mother wavelet and the optimal number of levels of resolution is carried out using the minimum description length (MDL) data criteria. The proposed algorithm is tested off-line using data collected from a prototype laboratory three-phase power transformer. The test results show reduced computational burden, high speed and high accuracy. [ABSTRACT FROM AUTHOR]

Published
2005
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results