Optimal restoration of directional overcurrent protection coordination for meshed distribution system integrated with DGs based on FCLs and adaptive relays

2022 ◽  
Vol 205 ◽  
pp. 107738
Author(s):  
A.Y. Hatata ◽  
A.S. Ebeid ◽  
M.M. El-Saadawi
Keyword(s):  
Distribution System ◽  
Overcurrent Protection

scholarly journals Adaptive Protection for Microgrid with Distributed Energy Resources

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1959
Author(s):  
Chathurika Chandraratne ◽  
Thaiyal Naayagi Ramasamy ◽  
Thillainathan Logenthiran ◽  
Gayadhar Panda
Keyword(s):  
Distribution System ◽  
Low Voltage ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Power Network ◽  
Distributed Energy ◽  
Software Environment ◽  
Overcurrent Protection ◽  
Adaptive Protection ◽  
Overcurrent Relay

The microgrid includes a distribution system with low voltage, controllable load, and distributed energy resources (DER). The DERs have been increased in the recent power network to address global environmental concerns, which creates challenges in faults, synchronization, inertia control, etc. As the technologies are getting advanced day by day, the past technology becomes obsolete. The internet of things (IoT) and artificial intelligence (AI) are the most discussed topics to obtain solutions for the challenges. One of the proposed solutions is adaptive overcurrent protection, as it can be used for any grid. In this paper, an algorithm is developed for the adaptive overcurrent relay protection to overcome the challenges of the microgrid with distributed energy resources. Then, the solutions obtained from the adaptive overcurrent protection algorithm network simulation are compared to the traditional overcurrent protection algorithm using the four key points such as selectivity, reliability, sensitivity, and speed to have a good performance in the power network. All the simulation studies are done in the electrical transient analyzer program (ETAP) software environment. Simulation results validate the performance of the proposed algorithm for adaptive protection using the IEEE-9 bus system with a microgrid.

scholarly journals Optimal Overcurrent Relay Coordination for Sustainable Standalone Hydrokinetic Renewable Energy (SHRE) Distribution Network at Batang Rajang River, Kapit Sarawak by Genetic Algorithm Technique

2018 ◽  
Author(s):  
Saiful Zuhaimi Ahmad ◽  
Mohammad Lutfi Othman ◽  
Hashim Hizam
Keyword(s):  
Genetic Algorithm ◽  
Renewable Energy ◽  
Distribution System ◽  
Distribution Network ◽  
Operating Time ◽  
Protection System ◽  
Develop Model ◽  
Protection Scheme ◽  
Overcurrent Protection ◽  
Overcurrent Relay

This paper presents a study on optimization of Overcurrent relay (OCR) coordination protection scheme for Sustainable Standalone Hydrokinetic Renewable Energy (SHRE) distribution network at Batang Rajang river, located at Kapit Sarawak, Malaysia by turning river stream into power generation source. The purpose of the project is to develop rural electrification system for native long houses along the river. The research study is tested on a DigSILENT develop model of the SHRE distribution network and in accordance with all respectively unique parameters and relevant standards. Since this is a new standalone distribution system, an efficient and properly coordinated overcurrent protection system must be provided. Improper and miscoordination among OCRs result in maloperation of the protection system that can lead to false tripping and an unnecessary outage and power system instability. Thus, the objective of this work is to employ Genetic Algorithm (GA) technique in Matlab/Simulink for optimal overcurrent coordination and settings among all OCRs in the proposed distribution network in order to improve the speed of OCR tripping operation. The GA is used because the project is fast track and requiring the simplest method available. In this strategy, time dial setting (TDS) is optimized by using plug setting multiplier (PSM) as the constraint. The obtained results show a significant improvement of the relay operating time of 36.01% faster than that of conventional numerical technique during fault occurrence. Thus, an efficient and reliable overcurrent protection scheme has been achieved for the SHRE distribution network.

Practical Challenges of Inverse and Definite-Time Overcurrent Protection Coordination in Modern Industrial and Commercial Power Distribution System

2021 ◽  
Vol 57 (1) ◽  
pp. 187-197
Author(s):  
Vincentius Raki Mahindara ◽  
David Felipe Celeita Rodriguez ◽  
Margo Pujiantara ◽  
Ardyono Priyadi ◽  
Mauridhi Hery Purnomo ◽  
...  
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Power Distribution System ◽  
Overcurrent Protection ◽  
Definite Time

Design and implementation of a power distribution system adopting overcurrent protection

2020 ◽  
Vol 124 (1281) ◽  
pp. 1789-1797
Author(s):  
M. Bekhti ◽  
M. Bensaada ◽  
M. Beldjehem
Keyword(s):  
Power Systems ◽  
Power System ◽  
Power Distribution ◽  
Distribution System ◽  
Electrical Power ◽  
Electrical Power System ◽  
Complete Evaluation ◽  
Power Distribution System ◽  
Design And Implementation ◽  
Overcurrent Protection

ABSTRACTOne of the most critical aspects of a small satellite is the electrical power system (EPS) since the electrical power is necessary for the satellite to operate correctly during its predefined lifetime. The electrical power system consists mainly of solar cells, batteries, voltage converters and protection circuits. The electrical power system is responsible of providing stable power to the rest of the satellite subsystems.In satellite electrical power systems, overcurrent protection is now becoming an important function handled by the power distribution module (PDM). This paper proposes a method to evaluate the suggested protection. With the proposed procedure we should be able to verify that every possible failure does not travel through the EPS and cause a fatal degradation of the electrical power system. This will allow a complete evaluation of functionality of the protection hardware.This paper discusses the design and implementation of the power distribution module (PDM) for the coming generation of small satellites for the Algerian Space Agency (ASAL). The design must provide a reliable protection for the subsystems from the overcurrent associated with a device failure.

scholarly journals Coordination of Over Current Relays in Distributed Generation

2019 ◽  
Vol 8 (2) ◽  
pp. 5836-5840
Keyword(s):  
Distributed Generation ◽  
Radial Distribution ◽  
Distribution System ◽  
Energy Sources ◽  
Fault Current ◽  
Distributed Energy ◽  
Radial Distribution System ◽  
Overcurrent Protection ◽  
Overcurrent Relays ◽  
Overcurrent Relay

The modern power system increases the power by adding Distributed Generation (DG). When distributed energy sources are added to the network, they effect the conventional fault levels and fault current paths and have been proved that the accurate operation of the overcurrent protection is not possible. This paper describes time overcurrent relay protection for radial distribution system (RDS) with DG. These time overcurrent relays is implemented by using IEC-60255 standard. The proposed protection outline is verified on a typical IEEE 13-bus radial distribution system with distributed energy source. The model of the system is replicated by using MATLAB/Simulink.

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