novtexmechМехатроника, автоматизация, управлениеMekhatronika, Avtomatizatsiya, Upravlenie1684-64272619-1253Commercial Publisher «New Technologies»10.17587/mau.24.24-32novtexmech-1307Research ArticleСИСТЕМНЫЙ АНАЛИЗ, УПРАВЛЕНИЕ И ОБРАБОТКА ИНФОРМАЦИИSYSTEM ANALYSIS, CONTROL AND INFORMATION PROCESSINGАвтоматизированный контроль несанкционированных отборов мощностей в распределенной электрической сетиAutomated Control of Unauthorized Power Take-Offs in a Distributed Electrical NetworkОморовТ. Т.OmorovT. T.

чл.-корр. НАН КР, д-р техн. наук, зав. лабораторией

г. Бишкек

Corresponding-Member of the NAS KR, Dr. Tech. Sc., Head of the Laboratory

Bishkek

omorovtt@mail.ruЗакиряевК. Э.ZakiriaevK. E.

ст. преподаватель

г. Каракол

Senior Teacher

Karakol

kubz1@mail.ruТакырбашевБ. К.TakyrbashevB. K.

канд. техн. наук, ст. науч. сотр

г. Бишкек

Cand. Sc., Senior Researcher

Bishkek

b.takyrbashev@gmail.comИманакуноваЖ. С.ImanakunovaZh. S.

канд. техн. наук, доц.

г. Бишкек

Cand. Sc., Associate Professor

Bishkek

j.imanakunova@kstu.kgНациональная академия наук Кыргызской Республики (НАН КР). Институт машиноведения и автоматикиКыргызстанInstitute of Mechanical Engineering and Automation, National Academy of Science of Kyrgyz Republic (NAS KR)KyrgyzstanИссык-Кульский государственный университетКыргызстанIssyKul State UniversityKyrgyzstanНациональная академия наук Кыргызской Республики (НАН КР), Институт машиноведения и автоматикиКыргызстанInstitute of Mechanical Engineering and Automation, National Academy of Science of Kyrgyz Republic (NAS KR)KyrgyzstanКыргызский государственный технический университетКыргызстанKyrgyz State Technical UniversityKyrgyzstan2023120120232412432Copyright © Commercial Publisher «New Technologies», 20232023Commercial Publisher «New Technologies»Commercial Publisher «New Technologies»https://mech.novtex.ru/jour/about/submissions#copyrightNoticehttps://mech.novtex.ru/jour/article/view/1307

В качестве объекта автоматизированного контроля рассматривается распределенная электрическая сеть (РЭС) напряжением 0,4 кВ, функционирующая в несимметричном режиме. Формулируется задача идентификации мест и контроля несанкционированных отборов мощностей (НОМ) в РЭС в условиях функционирования автоматизированной системы контроля и учета электроэнергии (АСКУЭ). Первичной исходной информацией для ее решения являются данные, полученные с головного и абонентских счетчиков электроэнергии путем синхронизированных дистанционных измерений в дискретные моменты времени. Данная проблема относится к классу задач, в которых имеется существенная неопределенность о текущем состоянии исследуемого объекта и параметрах внешних возмущающих воздействий, в качестве которых выступают несанкционированные потребители электроэнергии. В указанных условиях первичные измерительные данные о характеристиках нагрузок абонентов сети, полученные со счетчиков автоматизированной системы и записанные в ее базу данных, являются недостаточными для решения рассматриваемой задачи. В связи с этим в целях снижения уровня неопределенности и получения дополнительной необходимой информации о состоянии объекта в рассмотрение вводится понятие виртуальной модели РЭС, предназначенной для описания ее желаемого состояния, которое определяется отсутствием в сети указанных внешних случайных возмущений. Предложен новый метод решения сформулированной задачи, основанный на концепции виртуальной модели РЭС. Получены условия для идентификации текущего состояния РЭС. Для этой цели определены входные желаемые фазные токи виртуальной сети путем введения эквивалентных комплексных сопротивлений определенных частей трехфазной сети. Идентифицированы векторы действующих значений токов и напряжений на нагрузках абонентов и межабонентских участках виртуальной сети. Введены критериальные функции, определяющие отклонения соответствующих компонентов векторов напряжений на нагрузках абонентов реальной РЭС и ее виртуальной модели. На основе указанных функций сформулирован критерий идентификации и алгоритм контроля несанкционированных отборов мощностей в трехфазной распределенной сети. Полученные результаты ориентированы для создания алгоритмического и специального программного обеспечения подсистемы автоматизированного контроля НОМ в составе АСКУЭ.

A distributed electrical network (DEN) with a voltage of 0.4 kV operating in an unsymmetric mode is considered as an object of automated control. The problem of identification of places and control of unauthorized power take-offs (UPTO) in the DEN in the conditions of functioning of the automated system of control and accounting of electricity (ACMSE) is formulated. The primary source information for its solution is the data obtained from the head and subscriber electricity meters by synchronized remote measurements at discrete points in time. This problem belongs to the class of problems in which there is significant uncertainty about the current state of the object under study and the parameters of external disturbing influences, which are unauthorized consumers of electricity. Under these conditions, the primary measurement data on the characteristics of the network subscribers’ loads received from the counters of the automated system and recorded in its database are insufficient to solve the problem under consideration. In this regard, in order to reduce the level of uncertainty and obtain additional necessary information about the state of the object, the concept of a virtual DEN model is introduced into consideration, designed to describe its desired state, which is determined by the absence of these external random disturbances in the network. A new method for solving the formulated problem is proposed, based on the concept of a virtual DEN model. The conditions for identifying the current state of the DEN have been obtained. For this purpose, the desired input phase currents of the virtual network are determined by introducing equivalent complex resistances of certain parts of the three-phase network. The vectors of the effective values of currents and voltages on the loads of subscribers and inter-subscriber sections of the virtual network are identified. Criterion functions are introduced that determine the deviations of the corresponding components of the stress vectors on the loads of subscribers of the real DEN and its virtual model. Based on these functions, an identification criterion and an algorithm for monitoring unauthorized power take-offs in a three-phase distributed network are formulated. The obtained results are oriented for the creation of algorithmic and special software for the subsystem of automated control of UPTO as part of the ACMSE.

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The authors declare that there are no conflicts of interest present.