Journal
PROCEEDINGS OF THE 2020 3RD IEEE INTERNATIONAL CONFERENCE ON DIELECTRICS (ICD 2020)
Volume -, Issue -, Pages 704-707Publisher
IEEE
DOI: 10.1109/ICD46958.2020.9342001
Keywords
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Funding
- National Grid plc [NIA_NGTO010]
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Silicone oils are widely used as insulating fluids in many high voltage applications, including cable sealing ends. However, the long-term effects of the service conditions on the properties of silicone oil are relatively poorly understood. Using a range of techniques, we report on the condition of ex-service silicone oils compared to new, unused oil and comment on the suitability of each technique for monitoring the aging process. Analysis of the oils will involve dielectric permittivity measurements, chemical analysis using mass spectrometry, two spectroscopic techniques, and viscosity measurements. We also consider the feasibility of obtaining accurate conductivity measurements: finite element simulations were used to analyze the effectiveness of a conductivity test cell.
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