Search results for "Overhead line"

showing 3 items of 13 documents

Uprating an overhead line. Italian TSO applications to increase system N-1 security

2013

This paper analyzes innovative devices to optimize the energy flows transmission on existing overhead lines. Indeed sometimes the structural asset isn’t adequate to manage energy generated by Renewable Energy Source (RES) in particular operating conditions. In addiction the outage of primary substations on the grid and the increase of consumptions have caused growing load currents. In order to satisfy these needs, TSOs have adopted new measures on existing power lines and N-1 criteria to ensures the electrical grid security. These particular devices are Dynamic Rating systems. After introducing thermal resistant conductors and Dynamic Rating (DR) solutions, paper reports two different appli…

Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaUprating of overhead line thermal resistant conductor Dynamic thermal rating
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A Cost-Effective Solution for Clearing High-Impedance Ground Faults in Overhead Low-Voltage Lines

2019

Downed distribution conductors in overhead distribution systems may not be a concern for equipment but greatly challenge the safety of persons, as well as the integrity of properties. Standard overcurrent protective devices may not be able to detect the magnitudes of currents resulting from high-impedance ground faults. Sophisticated relays able to detect high-impedance ground faults have been available to electric utilities. However, their implementation is rather uncommon, especially in developing countries, most likely due to their costs. In this paper, the authors formalize the problem, and propose a possible cost-effective solution for low-voltage overhead lines with neutral wire. This…

metal hookbusiness.industryComputer science020209 energy020208 electrical & electronic engineeringElectrical engineeringFault protectionGround and neutral02 engineering and technologyoverhead lineIndustrial and Manufacturing EngineeringLine (electrical engineering)short-circuit currentsOvercurrentSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaHigh impedanceControl and Systems Engineeringhigh-impedance ground fault0202 electrical engineering electronic engineering information engineeringOverhead (computing)Electrical and Electronic EngineeringbusinessLow voltageShort circuitVoltageIEEE Transactions on Industry Applications
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Simulation of a Power Line Communication System in Medium and Low Voltage Distribution Networks

2011

The aim of the paper is to study the influence of the power transformer on signal transmission in the case of a power line communication (PLC) system in a overhead Medium Voltage (MV) power network. A model of the PLC system was carried out by means of the Simulink® software. A distributed parameter MV overhead line, two power transformers, the signal coupling networks and the receiving and transmitting line coupling interface of a ST7540 FSK powerline transceiver were included in the model. The performances of the complete PLC communication system are evaluated for different line lengths by means of the attenuation computed as ratio between the received and transmitted voltage signals.

power line communicationEngineeringbusiness.industryElectrical engineeringpower transformerCommunications systemSignalLine (electrical engineering)overhead linepower system communicationPower-line communicationmedium voltagemedium voltage communication system power system communication overhead line communication equipment testing power line communication attenuationElectronic engineeringOverhead (computing)communication systembusinessLow voltageSettore ING-INF/07 - Misure Elettriche E ElettronicheOverhead lineattenuationcommunication equipment testingVoltage
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