Results 11 to 20 of about 231,657 (285)

Experimental Investigation of Optimal Relay Position for Magneto-Inductive Wireless Sensor Networks

open access: yesSensors, 2020
Magneto-inductive (MI) waveguide technology is often proposed to increase the MI communication distance without adding significant cost and power consumption to the wireless sensor network.
Gang Qiao   +3 more
doaj   +1 more source

A study on Relay Effect via Magnetic Resonant Coupling for Wireless Power Transfer

open access: yesMATEC Web of Conferences, 2016
Wireless power transfer (WPT) transmits electrical energy from a power source to an electrical load wirelessly or without any conductors. The capability of WPT to transmit the energy is limited.
Rashid N.A.   +6 more
doaj   +1 more source

On performance analysis for optimum combining of DF relaying with fast-fading multiple correlated CCIs, correlated source-relay, and thermal noise

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
This paper analyzes the outage probability (OP) and the average symbol error rate (SER) of decode-and-forward (DF) relaying. The paper derives closed-form expressions for the OP and the average SER with optimum combining (OC) considering fast-fading ...
Kyuhyuk Chung
doaj   +1 more source

Modeling and Simulation of Out of Step Blocking Relay for Power Swing using Concentric Polygons Scheme

open access: yesTikrit Journal of Engineering Sciences, 2010
This paper investigates a power swing effect on a distance protection relay performance installed on (HV/EHV) transmission line as well as power system stability.
Ahmad A. Al-Badrany
doaj   +1 more source

Simulation of Distance Relay for Load Encroachment Alleviation with Agent Based Supervision of Zone3

open access: yesRenewable Energy and Sustainable Development, 2017
Cascaded tripping of power lines due to mal-operation of zone-3 distance relays has been one of the main causes of many previous blackouts worldwide. Encroachment of load into zone-3 characteristics during stressed system operation conditions is a basic ...
Mohamed Badr   +2 more
doaj   +1 more source

Relay Node Placement Based on Optimal Transmission Distance in Two-Tiered Sensor Network

open access: yesIEEE Access, 2020
With the gradual expansion of the application field in wireless sensor networks, the problems of the energy consumption has received more and more attention.
Mao Li, Feng Jiang
doaj   +1 more source

A New Model of Numerical MHO Distance Relay Associated with Power Swing Detector

open access: yesAlgerian Journal of Signals and Systems, 2016
In conventional transmission line protection, a distance relay is used to provide the primary as well as backup protection. The voltage and current phasors measurement needed by the distance relay for determining the impedance may be affected by the ...
Ayache MATI   +2 more
doaj   +1 more source

Relay-assisted wireless energy harvesting for multihop clustered IoT network

open access: yesIntelligent and Converged Networks, 2023
In large-scale networks such as the Internet of Things (IoT), devices seek multihop communication for long-distance communications, which considerably impacts their power exhaustion.
B. Pavani   +2 more
doaj   +1 more source

STATCOM Impact on Distance Relay Performance

open access: yesDiyala Journal of Engineering Sciences, 2016
Flexible AC Transmission System devices provide for better utilization of already existing transmission systems as well as newly installed and upgraded systems.
Qais M. Alias
doaj   +1 more source

Suggestion of a New Protection Scheme for a Transmission System Equipped with a Thyristor-Controlled Series Capacitor

open access: yesEnergies, 2019
A thyristor-controlled series capacitor (TCSC) is employed to a transmission line in order to enhance the usable capacity of the present as well as upgraded lines, improve system stability, reduce losses, and improve power flow control capability ...
Minh-Chau Dinh   +6 more
doaj   +1 more source

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