Results 291 to 300 of about 91,620 (325)
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Intelligent coordinated adaptive distance relaying
Electric Power Systems Research, 2014Abstract Malfunctioning of distance relay third zone has been identified as one of the leading factors of power system blackouts in several nations. This inconsistency in operation happens when heavy loads start encroaching the zone 3 settings. In this paper, a novel multi-agent system based methodology for power system protection coordination is ...
Mohammed A. Haj-ahmed +1 more
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Time-Overcurrent Relay Coordination: A Review
International Journal of Emerging Electric Power Systems, 2005When two protective apparatus installed in series have characteristics, which provide a specified operating sequence, they are said to be coordinated or selective. The coordination of directional overcurrent relays poses serious problems in the modern complex power system networks, which are interconnected.
Dinesh Birla +2 more
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Overcurrent relays coordination for commercial building
2013 IEEE 7th International Power Engineering and Optimization Conference (PEOCO), 2013This paper presents an overcurrent relays coordination study for an 11 kV commercial building in southern Malaysia. Nevertheless, the actual study that covers the overcurrent relays, earth fault relays and earth leakage relays were executed by providing optimum and functionable relay settings prior to commissioning of the building.
O. Aliman, I. Musirin
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Relay Location Optimization and Relay Coordination in Multi-hop Cognitive Radio Networks
2019Relay cooperative transmission can increase the transmission distance and reduce the transmit power. In this paper, three transmission modes are discussed: direct mode, single relay mode and dual relay mode. Each of the transmission schemes is optimized to obtain the maximum channel capacity.
Yinghua Zhang +4 more
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Impact of distributed generation on relay coordination
2017 International Conference on Computing Methodologies and Communication (ICCMC), 2017The reliability and stability of the power system decreases with abnormal operating condition of the protective system which may be caused due to overvoltage, under-frequency, overload etc. and leads to interruption of the supply, and may damage equipment's connected to the system.
Shubhangi B. Walke, Nayana N. Jangle
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Intelligent Relay Coordination Method for Microgrid
2020This chapter basically deals with the protection coordination of a typical microgrid with distributed energy sources. As we are aware that fault current changes its direction when microgrid switches from non-islanded condition to islanded condition, so the main challenge before the power engineer’s is to have a proper protection coordination in dual ...
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Non-conventional Overcurrent Relays Coordination
2019The Invasive Weed Optimization (IWO) algorithm has been adapted for the high dimension coordination problem. Many utilities follow the criterion of increase use of differential protection in transmission lines which has absolute selectivity with no backup function offered.
Erik Cuevas +2 more
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Optimal coordination of directional overcurrent relays
2018The coordination between DOCRs is nonlinear and highly constrained optimization problem in which two settings, namely, TDS and PCS of each relay are considered as decision variables. The main objective is to minimize the sum of OTs of all the primary relays, which are expected to operate in order to clear the faults of their corresponding zones.
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New DOCR coordination via non-conventional time curves to achieve bounded relay times
International Journal of Electrical Power and Energy Systems, 2023Arturo Conde
exaly
The Coordination of FCL and Relay Protection: A Review
2023Zhiying Xue +5 more
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