Results 221 to 230 of about 75,003 (271)

Optimal coordination of over-current relay with Distributed Generation consideration

2011 International Conference on Advanced Power System Automation and Protection, 2011
Utilizing Distributed Generation (DG) is greatly increasing in recent years. This is mostly because of simple installation, environmental effects and loss reduction due to closeness to the load centers. However, DG installation, especially in distribution networks, raises some problems. One of these problems is over-current (OC) relays coordination. In
Mehdi Maleknia, null Hossein Kazemi Karegar   +1 more
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Optimal coordination of over-current relays using differential evolution

2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2012
In this paper, the study of optimal coordination of directional over-current relays is proposed. The relay coordination problem is non-linear. It typically consists of two groups of control variables (Time Dial Setting: TDS and Plug Setting: PS). The objective function used is the operation time of the main relay in all considered fault cases.
Somboonsup Rodporn, Thanatchai Kulworawanichpong, Anant Oonsivilai, Dusit Uthitsunthorn, Ratchadaporn Oonsivilai   +4 more
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Optimal coordination of over-current relays using modified differential evolution algorithms

Engineering Applications of Artificial Intelligence, 2010
Optimization of directional over-current relay (DOCR) settings is an important problem in electrical engineering. The optimization model of the problem turns out to be non-linear and highly constrained in which two settings namely time dial setting (TDS) and plug setting (PS) of each relay are considered as decision variables; the sum of the operating ...
Radha Thangaraj, Millie Pant, Kusum Deep
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Effect of fault location on optimal coordination of directional over current relay

TENCON 2008 - 2008 IEEE Region 10 Conference, 2008
The objective of optimal relay coordination in interconnected power system is to achieve selectivity without sacrificing sensitivity & fast fault clearance time. This paper presents the effect of fault location on the flow of current direction & optimal coordination of directional over current relay. In this coordination problem Time Dial Setting (TDS)
Chetan Aggarwal, H.A. Mangalvedekar, H.B. Chaudhari   +2 more
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Optimized over-current relay coordination using Flower Pollination Algorithm

2015 IEEE International Advance Computing Conference (IACC), 2015
The main purpose of optimization of relay coordination in an extensively large electrical network is to enhance the selectivity and at the same time reducing the fault clearing time to improve reliability of the system. The relays provided are set to function properly in normal as well as abnormal condition. In this paper; the main focus is to find out
Indrajit N. Trivedi, Snehal V. Purani, Pradeep K. Jangir   +2 more
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Optimal Coordination of Dual Setting Directional Over Current Relays in Microgrid With Different Standard Relay Characteristics

2020 IEEE 9th Power India International Conference (PIICON), 2020
In the presence of distributed generation (DG), the fault current through the relay in forward direction is higher as compared to reverse direction. Thus it is desirable to have dual setting directional over current relay (DOCR) which can operate for both forward and reverse direction of fault current with two independent relay settings.
Raghvendra Tiwari, Ravindra Kumar Singh, Niraj Kumar Choudhary   +2 more
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Optimail strategy for Over Current relay coordination using Genetic Algorithm

2014 International Conference on Engineering and Technology (ICET), 2014
In conventional methods coordination of Over Current relays (OCR) is obtained through careful time grading. Due to the expansion of electric systems, the need for an efficient coordinated protective system is crucial. The optimal time for protection given the coordination problem turned to be little complex to be calculated. To solve the problem of the
Rania A. Swief, Almoataz Y. Abdelaziz, A. Nagy   +2 more
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Application of linear programming for optimal coordination of directional over-current relays

2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2012
In this paper presents an algorithm for directional over-current relay coordination based on linear programming. The relays are configured by adjusting time dial setting (TDS) of function properly in normal and fault conditions. The TDS adjustment is performed by using linear programming.
Supawatchara Niyomphant, Uthen Leeton, Thanatchai Kulworawanichpong, Nimit Chomnawang   +3 more
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Implementation of Directional Over-current Relay Coordination Approaches in Electrical Networks

Electric Power Components and Systems, 2015
AbstractAs the smart grid concept is employed in the electric power system, network load flow and topology changes intensively to meet the best generation-demand balancing point. These changes must account for protection devices to enhance their performance.
Meng Yen Shih, Arturo Conde
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Optimal coordination of over current relay using opposition learning-based gravitational search algorithm

The Journal of Supercomputing, 2021
In this paper, the optimum coordination of over current relay in distribution system has been performed. The time dial setting (TDS) of over current relay is optimized by minimizing total operating time of relays. As the power system is a complex and highly interconnected, the complexity may be occurred in calculating optimum relay coordination time ...
Debasis Acharya, Dushmanta Kumar Das
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