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2017 International Conference on High Voltage Engineering and Power Systems (ICHVEPS), 2017
Relay testing unit that has been widely available in the electricity industry is largely a multifunctional tester, so it tends to be complex and expensive. Then came the idea to design relay testing unit which is simple and economical, especially to test the characteristics of the over current relays with emphasis on precision and accuracy.
Naufal Murda Hagyana +2 more
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Relay testing unit that has been widely available in the electricity industry is largely a multifunctional tester, so it tends to be complex and expensive. Then came the idea to design relay testing unit which is simple and economical, especially to test the characteristics of the over current relays with emphasis on precision and accuracy.
Naufal Murda Hagyana +2 more
openaire +1 more source
Micro-controller based over current relay using Hall Effect current sensor
2018 Emerging Trends in Electronic Devices and Computational Techniques (EDCT), 2018This project is to design IDMT (Inverse Definite Minimum Time) Over current Relay using Arduino. The relay can be used to sense faults in transmission line based on analog to digital conversion of the 3-phase current and when a current in a part of a power system exceeds a pre-set value either due to a fault or a large overload, the relay will isolate ...
Rikta Majumder +3 more
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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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Optimal coordination of over-current relays using modified differential evolution algorithms
Engineering Applications of Artificial Intelligence, 2010Optimization 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, 2008The 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 +2 more
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Impact of decaying DC component on the characteristics of over-current protective relays
IET Conference Publications, 2009The response of an over-current relay towards a decaying DC component, in the current signal measured by the relay, is dependent on how much this decaying DC component is filtered out. Classic types of relays (i.e. electromechanical and static) might have insufficient or even no filtering and in this case the relay tripping characteristics are ...
A.M. El-Hadidy, A.A. Mahfouz
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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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Optimized over-current relay coordination using Flower Pollination Algorithm
2015 IEEE International Advance Computing Conference (IACC), 2015The 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 +2 more
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