Results 11 to 20 of about 303,443 (105)

Optimal coordination of directional overcurrent relays: A fast and precise quadratically constrained quadratic programming solution methodology [PDF]

IET Generation, Transmission & Distribution
Nowadays, power system protection is increasingly important because of the growing number of customers and the pressing need for timely fault resolution and relay operations.
Amir Hossein Poursaeed, Meysam Doostizadeh, Sina Hossein Beigi Fard, Amir Hossein Baharvand, Farhad Namdari   +4 more
doaj   +6 more sources

Hybridized Symbiotic Organism Search Algorithm for the Optimal Operation of Directional Overcurrent Relays [PDF]

Complexity, 2018
This paper presents the solution of directional overcurrent relay (DOCR) problems using Simulated Annealing based Symbiotic Organism Search (SASOS). The objective function of the problem is to minimize the sum of the operating times of all primary relays.
Muhammad Sulaiman, Ashfaq Ahmad, Asfandyar Khan, Shakoor Muhammad   +3 more
doaj   +2 more sources

Optimal Relay Coordination in Renewable Microgrids Using Multiobjective Optimization

International Transactions on Electrical Energy Systems
The penetration of distributed generation (DG) into distribution networks has transformed traditional protection philosophies, often resulting in protection miscoordination due to bidirectional fault currents and varying system topologies.
Shahimol Basheer, K. C. Sindhu Thampatty
doaj   +2 more sources

Optimal directional overcurrent relay settings for stable microgrids with synchronous and inverter-based resources [PDF]

International Journal of Electrical Power & Energy Systems
Microgrid (MG) is a small-scale system that offers on-site energy production and storage capabilities, allowing for the seamless integration of different technology-driven distributed energy resources (DERs), including inverter-based and synchronous ...
Abdelfattah A. Eladl, Ahmed N. Sheta, M. Elgamal, Juan C. Vasquez, Bishoy E. Sedhom   +4 more
doaj   +2 more sources

The Recent Development of Optimal DOCR Protection Strategies for Sustainable Power Systems via Computational Intelligence Techniques

IEEE Access, 2022
In the past decade, there has been unprecedented growth in distributed generation (DG) to cater to more load demand in the power grid. However, as the volume of these resources in the distribution network (DN) continues to increase, new challenges in ...
Suzana Pil Ramli, Meysam Pashaei, Mazaher Karimi, Kimmo Kauhaniemi, Alireza Pourdaryaei, Mehdi Daryaei, Masoud Zarei   +6 more
doaj   +1 more source

New Overcurrent Relay Coordination Method Through Time Intervals to Enhance Microgrid Protection

IEEE Access, 2021
This paper presents a method to protect microgrids (MGs) through coordination of directional overcurrent relays (DOCRs). The new formulation is subjected to restrictions of pre-established time intervals to guarantee the primary and backup functions of ...
Yendry Gonzalez, Arturo Conde
doaj   +1 more source

Optimisasi Setting Directional Overcurrent Relay Dengan Menggunakan Hybrid Algoritma (DE – PSO) [PDF]

, 2022
To prevent interference and damage to equipment in the electric power system, the role of a protection system is needed. An unreliable protection system has the impact of economic losses, this is the basis for engineers to conduct research on the ...
Tauladan, Imam Suri, Syamsir, Hendri Novia, Imam Suri Tauladan, Hendri Novia Syamsir   +3 more
core   +1 more source

Optimal Protection Coordination Scheme for Radial Distribution Network Considering ON/OFF-Grid

IEEE Access, 2021
Technology advancement for renewable energy resources and its integration to the distribution network (DN) has garnered substantial interest in the last few decades. Integrating such resources has proven to reduce power losses and improve the reliability
Muhammad Usama, Mahmoud Moghavvemi, Hazlie Mokhlis, Nurulafiqah Nadzirah Mansor, Haroon Farooq, Alireza Pourdaryaei   +5 more
doaj   +1 more source

Enhancing distribution generator impact mitigation using an adaptive protection scheme based on modified pelican optimization algorithm and active database management system

Energy Science &Engineering, Volume 11, Issue 11, Page 4108-4127, November 2023., 2023
The use of distribution generators affects fault currents, leading to miscoordination between protection relays and causing constraints on network reliability. To tackle this issue, an adaptive protection scheme (APS) based on a modified pelican optimization algorithm (MPOA) and active database management system is proposed.
Mohamed Abdelhamid, Salah Kamel, Hamed Zeinoddini‐Meymand   +2 more
wiley   +1 more source

Optimal placement and coordination of the protection devices simultaneous with optimal allocation of the DGs

IET Generation, Transmission &Distribution, Volume 17, Issue 18, Page 4119-4133, September 2023., 2023
This paper puts forward a new optimization framework to deal with the optimal coordination of the protection devices and optimal allocation of the DGs and the protection devices simultaneously. To such aim, it is important to reflect the coordination between protection devices in the total objective function.
Seyed Salman Fatemi, Haidar Samet
wiley   +1 more source