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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 +2 more
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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 +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, 2012In 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 +3 more
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Implementation of Directional Over-current Relay Coordination Approaches in Electrical Networks
Electric Power Components and Systems, 2015AbstractAs 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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A New Objective Function for Optimal Coordination of Directional Over-current Relays
2020This paper presents a novel objective function to obtain the optimum relay settings of directional over-current relays (DOCRs). The proposed improved objective function (IOF) is developed to solve the problems of previously proposed OFs. The proposed research work modifies the previous OFs by introducing a new weighting factor and adding a new term ...
Jay Shah +3 more
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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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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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Protection of microgrid through coordinated directional over-current relays
2014 IEEE Global Humanitarian Technology Conference - South Asia Satellite (GHTC-SAS), 2014Microgrids integrate distributed energy resources to provide reliable, environment friendly and economic power to small/medium sized urban communities or to large rural areas. Due to the existence of generators at all levels of the distribution system and two distinct operating modes, i.e.
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Journal of Computational Science, 2014
Abstract Growing interconnection in distribution system creates new problem for protection engineers. Particularly the design of overcurrent relay coordination in such system is an independent area of research. With the availability of new artificial based optimization algorithm relay coordination research gain a new momentum.
Manohar Singh +3 more
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Abstract Growing interconnection in distribution system creates new problem for protection engineers. Particularly the design of overcurrent relay coordination in such system is an independent area of research. With the availability of new artificial based optimization algorithm relay coordination research gain a new momentum.
Manohar Singh +3 more
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Non-adaptive over current relay coordination in distribution systems
2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2014Over current relay coordination in a meshed distribution system with multiple distributed renewable energy sources (RES) is a very challenging for the protection engineers. The exiting over current relays in the distribution system is set for some predefined network topology and fault currents.
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Adaptive over current relay coordination algorithm for changing short circuit fault levels
2015 IEEE Innovative Smart Grid Technologies - Asia (ISGT ASIA), 2015Fault levels are continuously changing in the electric networks due to change in the network impendences and configurations. These changes causes maloperation of the over current relays. An over current relay coordination algorithm is proposed in this paper, which utilizes adaptive fuzzy technique to select the optimal relay settings.
Manohar Singh, Vishnuvardhan Telukunta
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Study on Protection Coordination of a Flux-Lock Type SFCL With Over-Current Relay
IEEE Transactions on Applied Superconductivity, 2010In this paper, the method for the protection coordination of a flux-lock type superconducting fault current limiter (SFCL) with an over-current relay (OCR) was proposed. Immediately after the fault happens, the fault current can be limited by the flux-lock type SFCL and, if the fault continues, can be interrupted by the circuit breaker (CB) after ...
J S Kim, S H Lim, J C Kim
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