Mathematical model of insulation breakdown prediction based on partial discharge characteristics
The paper investigates the existing mathematical models of insulation destruction. It has been determined that most of the models for assessing the residual life of insulation are based on models of thermal and thermo oxidative destruction of insulation materials. Currently, solid dielectrics ar...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education
2021-03-01
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| Series: | Омский научный вестник |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2021/%20%E2%84%96%201%20(175)%20(%D0%9E%D0%9D%D0%92)/46-49%20%D0%9A%D0%BE%D0%BC%D0%B0%D1%80%D0%BE%D0%B2%20%D0%98.%20%D0%92.,%20%D0%9F%D0%BE%D0%BB%D1%8F%D0%BA%D0%BE%D0%B2%20%D0%94.%20%D0%90.,%20%D0%9D%D0%B8%D0%BA%D0%B8%D1%82%D0%B8%D0%BD%20%D0%9A.%20%D0%98.%20%D0%B8%20%D0%B4%D1%80..pdf |
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| Summary: | The paper investigates the existing mathematical models
of insulation destruction. It has been determined that
most of the models for assessing the residual life of
insulation are based on models of thermal and thermo oxidative destruction of insulation materials. Currently,
solid dielectrics are gaining popularity, including crosslinked polyethylene, PVC, ethylene-propylene rubber,
and others. In such dielectrics, it is possible to estimate
the residual life in the short term. This possibility and
necessity is due to the possibility of growth of tree defects
under the influence of partial discharges. The article
describes the proposed mathematical model for assessing
the residual resource of insulation by modeling the growth
of a defect. To take into account the influence of random
variables, the model uses the Weibull distribution. The
model assumes the division of the insulation thickness
into some areas, each of which is destroyed independently
of the others. The destruction of these areas occurs when
partial discharges occur with certain energy sufficient to
destroy the material. Insulation failure is predicted using
the least squares method. The results obtained can be
useful in assessing the residual life of insulating materials
and in conducting research in this area. |
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| ISSN: | 1813-8225 2541-7541 |