Optimal Coordination of Overcurrent Relays using Gravitational Search Algorithm with DG Penetration

Srivastava, Adhishree; Tripathi, Jayant Mani; Krishan, Ram; Parida, S. K.

doi:10.1109/tia.2017.2773018

Cited by 43 publications

(39 citation statements)

References 13 publications

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“…Minimising relay operating times while considering coordination constraints is a non-linear programming optimisation problem. To solve this problem, various metaheuristic algorithms [3,13,27,32,[35][36][37][38] deterministic algorithms [7,14,15,24,39] and their combination [22,26,[40][41][42][43] have been employed in the literature. In our previous study [43], the merits and demerits of each optimisation approach were discussed in detail.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive microgrid protection using overcurrent relays with a novel relay characteristic

Darabi

Bagheri

Gharehpetian

2020

IET Renewable Power Generation

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Following the high penetration of synchronous generators (SGs) in the power network, optimal overcurrent coordination improvement under faulty conditions has become a crucial problem. To reduce the overcurrent relay operating time, a new overcurrent relay curve is proposed in this study. Then, the overcurrent coordination problem is overcome by using a robust combinatorial optimisation method. Additionally, SG sizing and location is performed to verify the merits of both the proposed relay curve and the applied optimisation algorithm. The proposed relay curve performance is compared with other non-standard relays characteristic available in the literature for a standard microgrid. Then, the proposed relay curve is applied to both the 8-bus transmission and the 33 kV distribution portion of the 30-bus IEEE standard power test systems. Then, the SG transient stability for different fault locations is analysed. Finally, an accurate comparison between the proposed relay curve and standard/non-standard curves available in the literature is provided by applying the same optimisation method and network topology. The simulation results confirm the superiority of the proposed relay curve.

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Section: Introductionmentioning

confidence: 99%

Highly sensitive microgrid protection using overcurrent relays with a novel relay characteristic

Darabi

Bagheri

Gharehpetian

2020

IET Renewable Power Generation

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“…DG impacts on distribution system protection including changing short circuit levels, relay coordination failure, nuisance fuse tripping, relay under reaching among other problems [3]. Consequently, recent work has focused on proposing new protection schemes and solutions for mitigating DG integration impacts on protection coordination for both radial [4][5][6][7][8][9][10][11][12][13] and meshed systems [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…For radial distribution systems with DG, in [4], the proposed protection scheme relies on equipping each line with two overcurrent relays and is capable of minimizing the overall relay time. In [5], one overcurrent relay is added on the feeder to which the DG is connected in order to mitigate protection coordination failure and is coordinated with other relays on the system. In [6], a communication based multiagent approach, which utilizes overcurrent relays for protecting radial distribution systems with DG is implemented.…”

Section: Introductionmentioning

confidence: 99%

Non-Communication Based Time-Current-Voltage Dual Setting Directional Overcurrent Protection for Radial Distribution Systems With DG

et al. 2020

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This paper proposes a novel protection scheme equipped with time current voltage dual setting directional overcurrent relays for radial distribution systems with (distributed generation) DG without the need of communication assistance. The proposed protection scheme is formulated as a nonlinear programming problem where the main objective is to determine the optimal relay forward and reverse settings to minimize the relay overall operating times. The proposed scheme, based on the time current voltage dual settings directional overcurrent relay, is applied to the IEEE 33-bus radial distribution system with synchronous-based DG and its performance is compared against the conventional protection schemes that rely on both standard overcurrent relays and time current voltage directional overcurrent relays (proposed in the literature). The results show that, for radial distribution systems, the proposed scheme is capable of mitigating protection coordination failure due to DG reverse fault currents (a limitation in overcurrent relays), does not require communication (a limitation for meshed distribution systems) and does not require additional relays (a limitation in directional overcurrent relays) and thus making such relays more suitable for protecting radial distribution systems with DG.

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“…This method is applicable only to meshed distribution grids. In Srivastava et al, 26 the performances of particle swarm and gravitational search algorithms in OCR coordination are compared based on a radial test system equipped with DGs. In Kamangar et al, 24 a GA-based algorithm is proposed for optimal coordination of OCRs and earth fault relays.…”

Section: Introductionmentioning

confidence: 99%

“…This method minimizes the total operating time of the primary and backup relays without missing the coordination criteria. In Srivastava et al, 26 the performances of particle swarm and gravitational search algorithms in OCR coordination are compared based on a radial test system equipped with DGs. In El-Fergany, 27 a new objective function is introduced to decrease the arc-flash hazards as well as to retain the optimal coordination of directional OCRs.…”

Section: Introductionmentioning

confidence: 99%

Optimal time‐current graded coordination of multistage inverse‐time overcurrent relays in distribution networks

Hamidi

Ahmadian

Patil

et al. 2019

Int Trans Electr Energ Syst

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Summary This paper proposes a method for optimal coordination of multistage overcurrent relays (OCRs) in radial distribution networks, including industrial, rural, and urban grids. The proposed method optimally coordinates multistage time‐current curves (TCCs) using the genetic algorithm (GA). The proposed method is able to determine the proper TCC type (eg, moderately inverse, very inverse, and extremely inverse), pickup current, and time‐setting multiplier (TSM) for each stage of TCCs. The proposed method utilizes the dynamic models of OCRs and fuses. This safeguards the relays against the maloperations resulting from the DC decaying part of fault currents and transient overcurrents caused by transformer energization or motor starting. The proposed method is evaluated using DIgSILENT Power Factory for power system analysis and Matlab for implementation of the proposed method. According to the simulation outcomes, the advantages and disadvantages of the proposed method are discussed and compared with the existing methods.

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Optimal Coordination of Overcurrent Relays using Gravitational Search Algorithm with DG Penetration

Cited by 43 publications

References 13 publications

Highly sensitive microgrid protection using overcurrent relays with a novel relay characteristic

Highly sensitive microgrid protection using overcurrent relays with a novel relay characteristic

Non-Communication Based Time-Current-Voltage Dual Setting Directional Overcurrent Protection for Radial Distribution Systems With DG

Optimal time‐current graded coordination of multistage inverse‐time overcurrent relays in distribution networks

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