Optimal coordination of directional overcurrent relays using improved mathematical formulation

2018 ◽  
Vol 12 (9) ◽  
pp. 2086-2094 ◽  
Author(s):  
Vipul N. Rajput ◽  
Farhad Adelnia ◽  
Kartik S. Pandya
Keyword(s):  
Mathematical Formulation ◽  
Overcurrent Relays ◽  
Optimal Coordination

Optimal coordination of overcurrent relays with constraining communication links using DE–GA algorithm

2021 ◽  
Author(s):  
Mohammad Bakhshipour ◽  
Farhad Namdari ◽  
Sajad Samadinasab
Keyword(s):  
Ga Algorithm ◽  
Communication Links ◽  
Overcurrent Relays ◽  
Optimal Coordination

Analyzing the Impacts of Wind Generator on the Optimal Coordination of Overcurrent Relays

2012 ◽  
Vol 516-517 ◽  
pp. 1316-1321
Author(s):  
Ming Ta Yang ◽  
Jin Lung Guan ◽  
Jhy Cherng Gu
Keyword(s):  
Distribution Systems ◽  
Short Circuit ◽  
Circuit Breaker ◽  
Original System ◽  
Wind Generator ◽  
Linear Programming Methods ◽  
Protection Strategies ◽  
Overcurrent Relays ◽  
Optimal Coordination ◽  
The Impact

Wind generator and distribution systems after interconnection would change the short circuit fault characteristics of the original system and may lead to protection relay malfunctions, and review of the protection coordination. It is necessary to research the impact of existing protection strategies for distribution systems after wind generator interconnection. Linear programming methods were adopted for this study to review the coordination problems among feeder circuit breaker, lateral circuit breaker, and power fuse after radial distribution systems and wind generator interconnections.

Optimal coordination of directional overcurrent relays in complex distribution networks using sine cosine algorithm

2020 ◽  
Vol 187 ◽  
pp. 106435
Author(s):  
Kumari Sarwagya ◽  
Paresh Kumar Nayak ◽  
Suman Ranjan
Keyword(s):  
Distribution Networks ◽  
Overcurrent Relays ◽  
Optimal Coordination ◽  
Sine Cosine Algorithm ◽  
Complex Distribution

scholarly journals Nature-Inspired Whale Optimization Algorithm for Optimal Coordination of Directional Overcurrent Relays in Power Systems

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2297 ◽  
Author(s):  
Wadood ◽  
Khurshaid ◽  
Farkoush ◽  
Yu ◽  
Kim ◽  
...  
Keyword(s):  
Power Systems ◽  
Optimization Algorithm ◽  
Operating Time ◽  
Whale Optimization Algorithm ◽  
Humpback Whales ◽  
Test Systems ◽  
Whale Optimization ◽  
Overcurrent Relays ◽  
Optimal Coordination ◽  
Hunting Strategy

In power systems protection, the optimal coordination of directional overcurrent relays (DOCRs) is of paramount importance. The coordination of DOCRs in a multi-loop power system is formulated as an optimization problem. The main objective of this paper is to develop the whale optimization algorithm (WOA) for the optimal coordination of DOCRs and minimize the sum of the operating times of all primary relays. The WOA is inspired by the bubble-net hunting strategy of humpback whales which leads toward global minima. The proposed algorithm has been applied to six IEEE test systems including the IEEE three-bus, eight-bus, nine-bus, 14-bus, 15-bus, and 30-bus test systems. Furthermore, the results obtained using the proposed WOA are compared with those obtained by other up-to-date algorithms. The obtained results show the effectiveness of the proposed WOA to minimize the relay operating time for the optimal coordination of DOCRs.

An improved simulated annealing–linear programming hybrid algorithm applied to the optimal coordination of directional overcurrent relays

2020 ◽  
Vol 181 ◽  
pp. 106197 ◽  
Author(s):  
Alexandre A. Kida ◽  
Angel E. Labrador Rivas ◽  
Luis A. Gallego
Keyword(s):  
Linear Programming ◽  
Simulated Annealing ◽  
Hybrid Algorithm ◽  
Overcurrent Relays ◽  
Optimal Coordination

Development and application of an efficient optimizer for optimal coordination of directional overcurrent relays

2019 ◽  
Vol 32 (12) ◽  
pp. 8561-8583 ◽  
Author(s):  
Salah Kamel ◽  
Ahmed Korashy ◽  
Abdel-Raheem Youssef ◽  
Francisco Jurado
Keyword(s):  
Overcurrent Relays ◽  
Optimal Coordination

scholarly journals Optimal Coordination of Overcurrent Relays in Microgrids Considering a Non-Standard Characteristic

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 922 ◽  
Author(s):  
Sergio Danilo Saldarriaga-Zuluaga ◽  
Jesús María López-Lezama ◽  
Nicolás Muñoz-Galeano
Keyword(s):  
Distribution Networks ◽  
Modern Distribution ◽  
Novel Approach ◽  
Standard Characteristic ◽  
Fixed Parameter ◽  
Reliable Performance ◽  
Overcurrent Relays ◽  
Optimal Coordination ◽  
Traditional Approaches ◽  
Operational Modes

The optimal coordination of overcurrent relays (OCRs) has recently become a major challenge owing to the ever-increasing participation of distributed generation (DG) and the multi-looped structure of modern distribution networks (DNs). Furthermore, the changeable operational topologies of microgrids has increased the complexity and computational burden to obtain the optimal settings of OCRs. In this context, classical approaches to OCR coordination might no longer be sufficient to provide a reliable performance of microgrids both in the islanded and grid-connected operational modes. This paper proposes a novel approach for optimal coordination of directional OCRs in microgrids. This approach consists of considering the upper limit of the plug setting multiplier (PSM) as a variable instead of a fixed parameter as usually done in traditional approaches for OCRs coordination. A genetic algorithm (GA) was implemented to optimize the limits of the maximum PSM for the OCRs coordination. Several tests were performed with an IEC microgrid benchmark network considering several operational modes. Results showed the applicability and effectiveness of the proposed approach. A comparison with other studies reported in the specialized literature is provided showing the advantages of the proposed approach.

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