ЧАСТОТНАЯ ЗАВИСИМОСТЬ ТАНГЕНСА УГЛА ДИЭЛЕКТРИЧЕСКИХ ПОТЕРЬ ОТ СТЕПЕНИ УВЛАЖНЕНИЯ ПОЛИЭТИЛЕНОВОЙ ИЗОЛЯЦИИ КАБЕЛЕЙ
It is shown that application of the high-frequency relaxation spectroscopy is expedient at the analysis of processes of appearance of free moisture in the polymeric insulation of power cables. The calculated and experimental frequency dependences of dielectric loss tangent on the degree of humidific...
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| Date: | 2016 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Інститут електродинаміки НАН України, Київ
2016
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| Subjects: | |
| Online Access: | https://techned.org.ua/index.php/techned/article/view/784 |
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| Journal Title: | Technical Electrodynamics |
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Technical Electrodynamics| Summary: | It is shown that application of the high-frequency relaxation spectroscopy is expedient at the analysis of processes of appearance of free moisture in the polymeric insulation of power cables. The calculated and experimental frequency dependences of dielectric loss tangent on the degree of humidification of cable insulation are given. It is revealed that at prolonged moistening of insulation the peaks of relaxation losses are displaced into area of higher frequencies and there are the additional maxima corresponding to dispersion of energy dissipation in the new elements of insulation. The range of change of frequency of relaxation losses depends on concentration of free moisture in insulation and its electro-physical and morphological properties. References 19, table 1, figure 5. |
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