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A new method for assessment condition of oil-paper insulation based on the characteristics of frequency domain spectroscopy
- Source :
- 2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE).
- Publication Year :
- 2016
- Publisher :
- IEEE, 2016.
-
Abstract
- The Frequency Domain spectroscopy is a nondestructive electric diagnosis. It's very suitable for transformer oil-paper insulation condition of field detection, the actual development of the internal oil paper insulation status can be reflected accurately, especially in the low frequency and the ultra-low frequency. Because of the frequency domain dielectric spectroscopy at low frequency measurement requires a very long time, and it's vulnerable to environment. In order to ensure the accuracy of the insulating condition, the FDS needs to be better applied to the nondestructive quantitative assessment in transformer oil paper insulation system. The aged ample of oil-paper insulation is first prepared, and then this sample tested at thermostat 30°C in the FDS. To obtain the insulation information contained in dielectric loss factor (tanδ) as more as possible, the integral of dielectric loss factors (S tanδ ) in the characteristics frequency ranges are introduced as characteristics parameters for assessing insulation condition. Due to the FDS requires a very long time in characteristics frequency ranges, and it's vulnerable to environmental factors, In this paper, the method of predicting S tanδ in low frequency FDS based on the parameter identification of the X-Y equivalent circuit is put forward. then, the measured data and calculated data are compared, in order to confirm the availability of this method.
- Subjects :
- Engineering
Transformer oil
business.industry
020209 energy
Acoustics
02 engineering and technology
Low frequency
Thermostat
law.invention
law
Frequency domain
Insulation system
0202 electrical engineering, electronic engineering, information engineering
Electronic engineering
Equivalent circuit
Dielectric loss
Transformer
business
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE)
- Accession number :
- edsair.doi...........7313badb12223c1ef352825e625cbf26