scholarly journals Effect of non standard characteristics of overcurrent relay on protection coordination and maximizing overcurrent protection level in distribution network

2022 ◽  
Author(s):  
Abdallah Reda ◽  
Amal F. Abdelgawad ◽  
Mohamed Ibrahim
Keyword(s):  
Distribution Network ◽  
Protection Level ◽  
Overcurrent Protection ◽  
Overcurrent Relay

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.

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.

Adaptability Analysis of Directional Overcurrent Protection in the Distribution Network with Photovoltaic

2021 ◽  
Author(s):  
Tianjia Sun ◽  
Haiyang Liu ◽  
Xiaobo Ling ◽  
Qi Tu ◽  
Chenxu Chao ◽  
...  
Keyword(s):  
Distribution Network ◽  
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.

Penetration Capacity Analysis of Distributed Generation Considering Overcurrent Relay Protection and Flux-Coupling Type FCL

2014 ◽  
Vol 1070-1072 ◽  
pp. 923-928
Author(s):  
Peng Sun ◽  
Ming Wu Luo ◽  
Zhao Xia Sun ◽  
Tian Ci Liu ◽  
Chang Hong Deng ◽  
...  
Keyword(s):  
Distributed Generation ◽  
Rapid Development ◽  
Distribution Network ◽  
Relay Protection ◽  
Negative Influence ◽  
Capacity Analysis ◽  
Fault Current ◽  
Flux Coupling ◽  
Overcurrent Relay ◽  
Coupling Type

In light of the rapid development of the electric power grid, the integrated application of distributed generation (DG) units can be considered as a key driver. Nevertheless, along with large number of DG units are connected into a distribution network, maybe different kinds of effects are accordingly induced. In particular, regarding the configured relay protection, its selectivity and sensitivity may be affected. In this paper, the penetration capacity analysis of DG considering overcurrent relay protection and flux-coupling type FCL is conducted. Under different fault conditions, the theoretical impacts of introducing DG on the fault current are investigated, and a flux-coupling type FCL is suggested to limit the fault current and potentially enhance the DG’s access capacity. Furthermore, the detailed simulation model of a typical distribution network integrated with the DG and FCL is created. From the simulation results, the employment of the FCL can effectively reduce the fault current’s negative influence on the DG, and improve the DG’s access capacity to a certain extent.

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