Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems

Four-wire distribution electrical networks of 0.4 kV equipped with automated systems of electrical energy accounting are considered. The problem of identifying the resistances of the wires of the distribution network is solved on the basis of the effective values of voltages and currents, as well as...

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Главные авторы:	Danilov, M. I., Данилов, М. И., Romanenko, I. G., Романенко, И. Г.
Формат:	Статья
Язык:	English
Опубликовано:	2023
Темы:	Distribution network Wire resistances Solution of non-linear equations Resistance identification method Network parameters Four-wire three-phase circuit
Online-ссылка:	https://dspace.ncfu.ru/handle/20.500.12258/24036
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spelling	ir-20.500.12258-240362025-02-11T08:13:16Z Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems Оперативная идентификация сопротивлений проводов распределительных сетей 380 В автоматизированными системами учета Danilov, M. I. Данилов, М. И. Romanenko, I. G. Романенко, И. Г. Distribution network Wire resistances Solution of non-linear equations Resistance identification method Network parameters Four-wire three-phase circuit Four-wire distribution electrical networks of 0.4 kV equipped with automated systems of electrical energy accounting are considered. The problem of identifying the resistances of the wires of the distribution network is solved on the basis of the effective values of voltages and currents, as well as of their phase shift angles obtained by the accounting system in the power supply node of the network and from its subscribers for the selected observation intervals. A brief analysis of the known methods and technologies used in this area of research is carried out. The importance of the formulated problem for applied problems, such as control and diagnostics of electrical energy losses, as well as the technical condition of the network, is noted. A method (algorithm) is proposed that allows determining unknown, unequal complex resistances of inter-subscriber sections of the distribution network. In these resistances, the reactive components are considered equal within the inter-subscriber section; the active components differ due to the influence of unequal flowing currents and/or weather factors. At the same time, data from two different network operating modes are required, which are selected based on the analysis of the dynamics of changes of supply currents and/or voltages by the accounting system device connected to the power supply node. Considering that the active resistances of the wires must remain unchanged, the mode that is used for calculations is the one that is before the change in power consumption in the network and the next one immediately (about 0.1 s) after it. An example of a calculation that demonstrates the reliability of the proposed equations of the method that has been developed on a simulated distribution network is given. The research results are focused on the improvement of automated accounting systems and the implementation of their new functions that elevate the reliability of distribution networks, as well as allowing for the rapid identification of non-technical losses of electrical energy 2023-07-06T12:11:02Z 2023-07-06T12:11:02Z 2023 Статья Danilov, M.I., Romanenko, I.G. Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems // Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations. - 2023. - 66(2), pp. 124-140. - DOI: 10.21122/1029-7448-2023-66-2-124-140 http://hdl.handle.net/20.500.12258/24036 en Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations application/pdf
institution	СКФУ
collection	Репозиторий
language	English
topic	Distribution network Wire resistances Solution of non-linear equations Resistance identification method Network parameters Four-wire three-phase circuit
spellingShingle	Distribution network Wire resistances Solution of non-linear equations Resistance identification method Network parameters Four-wire three-phase circuit Danilov, M. I. Данилов, М. И. Romanenko, I. G. Романенко, И. Г. Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems
description	Four-wire distribution electrical networks of 0.4 kV equipped with automated systems of electrical energy accounting are considered. The problem of identifying the resistances of the wires of the distribution network is solved on the basis of the effective values of voltages and currents, as well as of their phase shift angles obtained by the accounting system in the power supply node of the network and from its subscribers for the selected observation intervals. A brief analysis of the known methods and technologies used in this area of research is carried out. The importance of the formulated problem for applied problems, such as control and diagnostics of electrical energy losses, as well as the technical condition of the network, is noted. A method (algorithm) is proposed that allows determining unknown, unequal complex resistances of inter-subscriber sections of the distribution network. In these resistances, the reactive components are considered equal within the inter-subscriber section; the active components differ due to the influence of unequal flowing currents and/or weather factors. At the same time, data from two different network operating modes are required, which are selected based on the analysis of the dynamics of changes of supply currents and/or voltages by the accounting system device connected to the power supply node. Considering that the active resistances of the wires must remain unchanged, the mode that is used for calculations is the one that is before the change in power consumption in the network and the next one immediately (about 0.1 s) after it. An example of a calculation that demonstrates the reliability of the proposed equations of the method that has been developed on a simulated distribution network is given. The research results are focused on the improvement of automated accounting systems and the implementation of their new functions that elevate the reliability of distribution networks, as well as allowing for the rapid identification of non-technical losses of electrical energy
format	Статья
author	Danilov, M. I. Данилов, М. И. Romanenko, I. G. Романенко, И. Г.
author_facet	Danilov, M. I. Данилов, М. И. Romanenko, I. G. Романенко, И. Г.
author_sort	Danilov, M. I.
title	Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems
title_short	Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems
title_full	Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems
title_fullStr	Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems
title_full_unstemmed	Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems
title_sort	operational identification of resistances of wires of 380 v distribution networks by automated accounting systems
publishDate	2023
url	https://dspace.ncfu.ru/handle/20.500.12258/24036
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Operational Identification of Resistances of Wires of 380 V Distribution Networks by Automated Accounting Systems

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