Results 211 to 220 of about 12,830 (248)
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Optimal coordination of protective relays
2013 International Conference on Power, Energy and Control (ICPEC), 2013Protective relays are commonly used as an economical means for protecting power systems. The selection of appropriate settings of these relays under various system conditions plays an important role in timely removal of the faulty section of power system.
D. S. Nair, S. Reshma
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Relay aided coordinated beamforming and interference neutralization
2017 Information Theory and Applications Workshop (ITA), 2017We consider the Multi-Input Single Output (MISO) Interfering Broadcast Channel (IBC), in other words the multi-user (MU) multi-cell half duplex downlink in a cellular or heterogeneous network, aided by a full duplex MIMO relay. The Degrees of Freedom (DoF) are analyzed for joint coordinated beamforming by the base stations and interference ...
Wassim Tabikh +2 more
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User Allocation and Precoder Design for Coordinated Relaying
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011Relays are used in the current standards to enhance the cell throughput and coverage. Often, the relays are evaluated without considering the overhead involved in providing the relay with the data prior to the transmission. In this paper, we evaluate the system performance by considering the duplexing loss with over- the-air transmission (OTA) for ...
Ganesh Venkatraman +2 more
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Centralized interference coordination in relay-enhanced networks
2012 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), 2012In this work, we investigate the issue of interference coordination in relay-enhanced networks. We focus on Type 1 in-band relays as proposed for LTE-Advanced, where the base station and the relay nodes share the same frequency for the backhaul and relay access link.
Günther Liebl +3 more
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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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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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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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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 relay coordination by evolutionary programming
Electric Power Systems Research, 2000Abstract This paper presents a novel optimization technique based on evolutionary programming for overcurrent (OC) relay coordination in ring fed distribution networks. Since the problem has multi-optimum points, ordinary mathematical based optimization techniques will fail.
C.W. So, K.K. Li
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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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