Analysis of the Distortion of the Signal Form for Location Monitoring of Electric Transmission Lines

Shilin, A. N.; Шилин, А. А.; Artyushenko, N. S.

doi:10.14489/td.2017.07.pp.044-049

Cited by 3 publications

(1 citation statement)

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“…Ука-занные сопротивления в процессе работы РЭС в зависимости от внешних климатических воздействий [30] могут в значительной степени изменяться, что свидетельствует об актуальности задачи их оперативной идентификации в современных системах учета энергопотребления. Информация о текущих значениях сопротивлений линий РЭС полезна для контроля их технического состояния и уровня надежности [33,34].…”

Section: Introductionunclassified

Identification of Single Leakage Currents in the Phases of a Distribution Grid Controlled by an Auto-mated Metering System

Danilov¹,

Romanenko²

2021

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The paper dwells upon a 0.4-kV four-wire three-phase distribution grid (DG), where energy consumption is monitored by an automated metering system. Phase wires are assumed to have equal unknown non-neutral resistance in each inter-customer section of the DG; the metering system measures the operating voltage, current, and phase angles between the customers as well as at the DG entry point. The paper dwells upon finding the values of, and locating the leakage currents resulting from unauthorized power outtake. It analyzes an earlier proposed method that relies on phase (linear) wire voltage increments to simulate disturbed and desired state of the DG; analysis reveals the disadvantages of this method. The paper further presents a novel solution based on calculating the grid parameters (resistances) and currents in real time. The paper also proposes an algorithm for calculating the grid parameters, which samples data from two different modes of DG operation. Mathematical expressions are shown herein that implement this method and have been tested by computational experiments. The results could be of use in the design of non-process electricity loss metering systems for distribution grids.

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Section: Introductionunclassified

Identification of Single Leakage Currents in the Phases of a Distribution Grid Controlled by an Auto-mated Metering System

Danilov¹,

Romanenko²

2021

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Intelligent Reflectometer for Diagnostics of Air Transmission Lines

Shilin

Шилин

Kuznetsova

et al. 2018

Studies in Systems, Decision and Control

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Metrological Analysis of an Intelligent Reflectometer for Monitoring Power Lines

Shilin¹,

Шилин²,

Kuznetsova³

et al. 2022

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The article provides an analysis of the sources of errors of reflectometers. The main error of reflectometers is the methodological component, which is determined by the error of setting the phase velocity of the pulse. The phase velocity of the pulse depends on various external factors. The instrumental component of the error is due to the instability of the reflected pulse shape and the presence of noise in the signal. Based on metrological analysis, an intelligent reflectometer was developed for monitoring overhead power transmission lines. The developed reflectometer contains blocks and nodes to compensate and reduce the main components of the total error. The developed reflectometer makes it possible to increase the accuracy of determining the accident site and reduce the recovery time of the line, and, consequently, increase the reliability of power supply.

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Analysis of the Distortion of the Signal Form for Location Monitoring of Electric Transmission Lines

Cited by 3 publications

References 0 publications

Identification of Single Leakage Currents in the Phases of a Distribution Grid Controlled by an Auto-mated Metering System

Identification of Single Leakage Currents in the Phases of a Distribution Grid Controlled by an Auto-mated Metering System

Intelligent Reflectometer for Diagnostics of Air Transmission Lines

Metrological Analysis of an Intelligent Reflectometer for Monitoring Power Lines

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