DETERMINATION OF INSULATION PARAMETERS OF CURRENT TRANSFORMERS AT MULTIPLE MEASUREMENTS IN MONITORING SYSTEMS UNDER WORKING VOLTAGE
Features of the data processing procedures of multiple measurements of the dielectric loss tangent of the high-voltage insulation, which are based on the comparison method, were considered. Three procedures were compared: the one procedure uses an assignment of a particular standard object for compa...
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| Дата: | 2016 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English Russian |
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National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
2016
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| Онлайн доступ: | http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.06 |
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| Назва журналу: | Electrical Engineering & Electromechanics |
Репозитарії
Electrical Engineering & Electromechanics| id |
eiekhpieduua-article-81023 |
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Electrical Engineering & Electromechanics |
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2017-08-21T18:31:00Z |
| collection |
OJS |
| language |
English Russian |
| topic |
high voltage insulation diagnostics data processing procedure processing procedure error dielectric loss tangent current transformer 621.314 |
| spellingShingle |
high voltage insulation diagnostics data processing procedure processing procedure error dielectric loss tangent current transformer 621.314 Beliaev, V. K. Panenko, H. N. DETERMINATION OF INSULATION PARAMETERS OF CURRENT TRANSFORMERS AT MULTIPLE MEASUREMENTS IN MONITORING SYSTEMS UNDER WORKING VOLTAGE |
| topic_facet |
high voltage insulation diagnostics data processing procedure processing procedure error dielectric loss tangent current transformer 621.314 высоковольтная изоляция диагностика методика обработки погрешность тангенс угла диэлектрических потерь трансформатор тока 621.314 діагностика високовольтна ізоляція методика обробки похибка тангенс кута діелектричних втрат трансформатор струму 621.314 |
| format |
Article |
| author |
Beliaev, V. K. Panenko, H. N. |
| author_facet |
Beliaev, V. K. Panenko, H. N. |
| author_sort |
Beliaev, V. K. |
| title |
DETERMINATION OF INSULATION PARAMETERS OF CURRENT TRANSFORMERS AT MULTIPLE MEASUREMENTS IN MONITORING SYSTEMS UNDER WORKING VOLTAGE |
| title_short |
DETERMINATION OF INSULATION PARAMETERS OF CURRENT TRANSFORMERS AT MULTIPLE MEASUREMENTS IN MONITORING SYSTEMS UNDER WORKING VOLTAGE |
| title_full |
DETERMINATION OF INSULATION PARAMETERS OF CURRENT TRANSFORMERS AT MULTIPLE MEASUREMENTS IN MONITORING SYSTEMS UNDER WORKING VOLTAGE |
| title_fullStr |
DETERMINATION OF INSULATION PARAMETERS OF CURRENT TRANSFORMERS AT MULTIPLE MEASUREMENTS IN MONITORING SYSTEMS UNDER WORKING VOLTAGE |
| title_full_unstemmed |
DETERMINATION OF INSULATION PARAMETERS OF CURRENT TRANSFORMERS AT MULTIPLE MEASUREMENTS IN MONITORING SYSTEMS UNDER WORKING VOLTAGE |
| title_sort |
determination of insulation parameters of current transformers at multiple measurements in monitoring systems under working voltage |
| title_alt |
ОПРЕДЕЛЕНИЕ ДИЭЛЕКТРИЧЕСКИХ ПАРАМЕТРОВ ИЗОЛЯЦИИ ТРАНСФОРМАТОРОВ ТОКА ПРИ МНОЖЕСТВЕННЫХ ИЗМЕРЕНИЯХ В СИСТЕМАХ КОНТРОЛЯ ПОД РАБОЧИМ НАПРЯЖЕНИЕМ ОПРЕДЕЛЕНИЕ ДИЭЛЕКТРИЧЕСКИХ ПАРАМЕТРОВ ИЗОЛЯЦИИ ТРАНСФОРМАТОРОВ ТОКА ПРИ МНОЖЕСТВЕННЫХ ИЗМЕРЕНИЯХ В СИСТЕМАХ КОНТРОЛЯ ПОД РАБОЧИМ НАПРЯЖЕНИЕМ |
| description |
Features of the data processing procedures of multiple measurements of the dielectric loss tangent of the high-voltage insulation, which are based on the comparison method, were considered. Three procedures were compared: the one procedure uses an assignment of a particular standard object for comparison, and two procedures don't use assignments of the special standard objects. Expressions of methodical errors of studied procedures were obtained. Analysis and calculations, which use the obtained expressions were made. Evaluations showed that an influence of a change of the tangent of dielectric loss of one from the monitoring objects on results of estimation of the tangents of other monitoring objects is the distinctive feature of the procedures without assignment of the standard object. Errors of these procedures more than errors of the traditional procedure, with assignment of the standard object. The study demonstrated that procedures without assignment of standard objects lead to difficultly predictable methodological errors, which hinder to estimate the actual value of the loss tangent and to estimate outcomes of the monitoring, by means comparing with allowable values. Moreover, the decrease of estimations of loss tangents of all objects, as a result of occurrence of at least one the object with strongly bad parameters, hides occurrence of other unsuccessful objects with smaller deviations and makes difficult recognition of such deviations at early stages. Improvements in processing techniques which reduce earlier specified errors and reduce the amount of measurements are proposed. The study results are useful in monitoring and diagnostic of basic insulation of current transformers or high-voltage bushings. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine |
| publishDate |
2016 |
| url |
http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.06 |
| work_keys_str_mv |
AT beliaevvk determinationofinsulationparametersofcurrenttransformersatmultiplemeasurementsinmonitoringsystemsunderworkingvoltage AT panenkohn determinationofinsulationparametersofcurrenttransformersatmultiplemeasurementsinmonitoringsystemsunderworkingvoltage AT beliaevvk opredeleniediélektričeskihparametrovizolâciitransformatorovtokaprimnožestvennyhizmereniâhvsistemahkontrolâpodrabočimnaprâženiem AT panenkohn opredeleniediélektričeskihparametrovizolâciitransformatorovtokaprimnožestvennyhizmereniâhvsistemahkontrolâpodrabočimnaprâženiem |
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2025-07-17T11:46:26Z |
| last_indexed |
2025-07-17T11:46:26Z |
| _version_ |
1850411656102805504 |
| spelling |
eiekhpieduua-article-810232017-08-21T18:31:00Z DETERMINATION OF INSULATION PARAMETERS OF CURRENT TRANSFORMERS AT MULTIPLE MEASUREMENTS IN MONITORING SYSTEMS UNDER WORKING VOLTAGE ОПРЕДЕЛЕНИЕ ДИЭЛЕКТРИЧЕСКИХ ПАРАМЕТРОВ ИЗОЛЯЦИИ ТРАНСФОРМАТОРОВ ТОКА ПРИ МНОЖЕСТВЕННЫХ ИЗМЕРЕНИЯХ В СИСТЕМАХ КОНТРОЛЯ ПОД РАБОЧИМ НАПРЯЖЕНИЕМ ОПРЕДЕЛЕНИЕ ДИЭЛЕКТРИЧЕСКИХ ПАРАМЕТРОВ ИЗОЛЯЦИИ ТРАНСФОРМАТОРОВ ТОКА ПРИ МНОЖЕСТВЕННЫХ ИЗМЕРЕНИЯХ В СИСТЕМАХ КОНТРОЛЯ ПОД РАБОЧИМ НАПРЯЖЕНИЕМ Beliaev, V. K. Panenko, H. N. high voltage insulation diagnostics data processing procedure processing procedure error dielectric loss tangent current transformer 621.314 высоковольтная изоляция диагностика методика обработки погрешность тангенс угла диэлектрических потерь трансформатор тока 621.314 діагностика високовольтна ізоляція методика обробки похибка тангенс кута діелектричних втрат трансформатор струму 621.314 Features of the data processing procedures of multiple measurements of the dielectric loss tangent of the high-voltage insulation, which are based on the comparison method, were considered. Three procedures were compared: the one procedure uses an assignment of a particular standard object for comparison, and two procedures don't use assignments of the special standard objects. Expressions of methodical errors of studied procedures were obtained. Analysis and calculations, which use the obtained expressions were made. Evaluations showed that an influence of a change of the tangent of dielectric loss of one from the monitoring objects on results of estimation of the tangents of other monitoring objects is the distinctive feature of the procedures without assignment of the standard object. Errors of these procedures more than errors of the traditional procedure, with assignment of the standard object. The study demonstrated that procedures without assignment of standard objects lead to difficultly predictable methodological errors, which hinder to estimate the actual value of the loss tangent and to estimate outcomes of the monitoring, by means comparing with allowable values. Moreover, the decrease of estimations of loss tangents of all objects, as a result of occurrence of at least one the object with strongly bad parameters, hides occurrence of other unsuccessful objects with smaller deviations and makes difficult recognition of such deviations at early stages. Improvements in processing techniques which reduce earlier specified errors and reduce the amount of measurements are proposed. The study results are useful in monitoring and diagnostic of basic insulation of current transformers or high-voltage bushings. Рассмотрены особенности методик обработки результатов множественных измерений тангенса угла диэлектрических потерь высоковольтной изоляции, основанных на методе сравнения. Проанализированы известные методики определения тангенса потерь с выделением отдельного эталонного объекта и без выделения такого эталона. Получены выражения для определения методических погрешностей. Проведено сравнение и показано, что применение методик обработки без выделения отдельного эталонного объекта может приводить к существенным сложностям в оценке результатов контроля изоляции. Предложены усовершенствования методик обработки, уменьшающие указанные погрешности методик и трудоемкость измерений. Розглянуто особливості методик обробки результатів множинних вимірів тангенсу діелектричних втрат високовольтної ізоляції, заснованих на методі порівняння. Проаналізовано відомі методики визначення тангенсу втрат з призначенням окремого еталонного об'єкта і без призначення такого еталона. Отримано вирази для визначення методичних похибок. Проведено порівняння і показано, що застосування методик обробки без призначення окремого еталонного об'єкта може призводити до суттєвих ускладнень в оцінці результатів контролю ізоляції. Запропоновано удосконалення методик обробки, що зменшують названі похибки методик і трудомісткість вимірювань. National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2016-10-31 Article Article Peer-reviewed Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.06 10.20998/2074-272X.2016.5.06 Electrical Engineering & Electromechanics; No. 5 (2016); 40-46 Электротехника и Электромеханика; № 5 (2016); 40-46 Електротехніка і Електромеханіка; № 5 (2016); 40-46 2309-3404 2074-272X en ru http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.06/77280 http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.06/77281 Copyright (c) 2016 V. K. Beliaev, H. N. Panenko https://creativecommons.org/licenses/by-nc/4.0 |