Wigner distribution function and alienation coefficient‐based transmission line protection scheme

Ola, Sheesh Ram; Saraswat, Amit; Goyal, Sunil Kumar; Jhajharia, Sharwan Kumar; Rathore, Bhuvnesh; Mahela, Om Prakash

doi:10.1049/iet-gtd.2019.1414

Cited by 59 publications

(15 citation statements)

References 33 publications

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“…This will help to maintain uninterruptable power supply to the consumer loads. A brief detail of the BESD used for the study is available in [14]- [17]. The battery system with DC link is integrated to dc bus of the proposed micro-grid test system.…”

Section: Battery Energy Storage Devicementioning

confidence: 99%

Optimal generation capacity mix in microgrid to meet demand

Sharma

Choubey

Kumar

et al. 2021

IJAAS

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<p>This paper presents an approach for optimal generation capacity mix to fulfill future power demand using a micro-grid model which is operated in both the on-grid and off-grid modes. This is achieved using the solar photovoltaic (PV) system, fuel-cell, and battery energy storage system (BESS) with and without the grid-connected mode. Different control approaches and optimal size of the generators are presented. Proposed micro grid with solar PV system, solid oxide fuel cell (SOFC) and back scattered electron detector (BESD) is tested for different operational scenarios of loads. Comparative index of performance (CIP) is introduced to indicate effectiveness of the micro-grid operations in the off-grid mode. This is based on difference in the total harmonic distortions (THD) in both the on-grid and off-grid modes. This is established that CIP indicates that the micro-grid works efficiently in the both the on-grid and off- grid modes during the simulated events of the switching ON/OFF the loads at different test conditions. The optimal generation mix successfully met the load demand with and without grid having conventional generatio.</p>

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Section: Battery Energy Storage Devicementioning

confidence: 99%

Optimal generation capacity mix in microgrid to meet demand

Sharma

Choubey

Kumar

et al. 2021

IJAAS

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“…The advantages of the WD-index include the higher concentration of energy and time-frequency resolution [22]. The WD-index evaluated using current signal ( f (t)) is effectively expressed by the following relation [23,24]:…”

Section: Wd-indexmentioning

confidence: 99%

A Protection Scheme for a Power System with Solar Energy Penetration

et al. 2020

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As renewable energy (RE) penetration has a continuously increasing trend, the protection of RE integrated power systems is a critical issue. Recently, power networks developed for grid integration of solar energy (SE) have been designed with the help of multi-tapped lines to integrate small- and medium-sized SE plants and simultaneously supplying power to the loads. These tapped lines create protection challenges. This paper introduces an algorithm for the recognition of faults in the grid to which a solar photovoltaic (PV) system is integrated. A fault index (FI) was introduced to identify faults. This FI was calculated by multiplying the Wigner distribution (WD) index and Alienation (ALN) index. The WD-index was based on the energy density of the current signal evaluated using Wigner distribution function. The ALN-index was evaluated using sample-based alienation coefficients of the current signal. The performance of the algorithm was validated for various scenarios with different fault types at various locations, different fault incident angles, fault impedances, sampling frequencies, hybrid line consisting of overhead (OH) line and underground (UG) cable sections, different types of transformer windings and the presence of noise. Two phase faults with and without the involvement of ground were differentiated using the ground fault index based on the zero sequence current. This study was performed on the IEEE-13 nodes test network to which a solar PV plant with a capacity of 1 MW was integrated. The performance of the algorithm was also tested on the western part of utility grid in the Rajasthan State in India where solar PV energy integration is high. The performance of the algorithm was effectively established by comparing it with the discrete Wavelet transform (DWT), Wavelet packet transform (WPT) and Stockwell transform-based methods.

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“…The algorithm proposed for recognition of power quality disturbance is tested on a practical power system network of Rajasthan State of India reported in [23]. A brief description of the grid sub-stations (GSS) and transmission lines of the This work is licensed under a Creative Commons Attribution 4.0 License.…”

Section: Validation Of Algorithm To Recognize Pq Disturbances In Practical Power System Networkmentioning

confidence: 99%

A Hybrid Algorithm for Recognition of Power Quality Disturbances

Kaushik

Mahela²,

Bhatt

et al. 2020

IEEE Access

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An algorithm making use of hybrid features of Hilbert transform (HT) and Stockwell transform (ST) to identify the single-stage and multiple (multi-stage) power quality disturbances (PQDs) is introduced in this manuscript. A power quality index (PI) and time location index (TLI), based on the features computed from the voltage signal by the use of HT and ST are proposed for recognition of the PQDs. Four features extracted from the PI and TLI are considered for classification of the PQDs achieved using decision tree driven by rules. The algorithm is tested on the PQDs generated with the help of mathematical models (in conformity with standard IEEE-1159). Performance is evaluated on 100 data set of every disturbance computed by varying various parameters, and efficiency is found to be greater than 99%. It is established that an algorithm is effective for recognition of PQ events with an efficiency greater than 98% even in the presence of high-level noise. Algorithm is faster compared to many reported techniques and scalable for application to voltages of all range. Results are validated through comparison with the results of the algorithms reported in the literature. Performance of the algorithm is effectively validated on the practical utility network. This algorithm can be effectively implemented for designing the power quality (PQ) monitoring devices for the utility grids.INDEX TERMS Hilbert transform, rule based decision tree, power quality disturbance, power quality index, Stockwell transform, time location index.

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Wigner distribution function and alienation coefficient‐based transmission line protection scheme

Cited by 59 publications

References 33 publications

Optimal generation capacity mix in microgrid to meet demand

Optimal generation capacity mix in microgrid to meet demand

A Protection Scheme for a Power System with Solar Energy Penetration

A Hybrid Algorithm for Recognition of Power Quality Disturbances

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