Comparative study on conductivity using Polarization and Depolarization Current (PDC) test for HV Insulation
Polarization a nd Depolarization C urrent (PDC) t esting is a no n-destructive d ielectric t esting method t 0 de termine t he conductivity 0 f i nsulations. J t is 0 ne 0 ft he dielectric d iagnostic techniques based 0 n t ime do main measurement. P DC measurement technique has gained immen...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2011
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/7936/1/P9637_777883aa2d40c9d27541c4ab80590f75.pdf http://eprints.uthm.edu.my/7936/ |
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| Summary: | Polarization a nd Depolarization C urrent (PDC) t esting
is a no n-destructive d ielectric t esting method t 0 de termine t he
conductivity 0 f i nsulations. J t is 0 ne 0 ft he dielectric d iagnostic
techniques based 0 n t ime do main measurement. P DC
measurement technique has gained immense popularity due to its
ability t 0 a ssess t he condition 0 f H V i nsulation. PDC
measurement can p rovide information a bout the conductivity
within the i nitial periods (seconds) after a DC step voltage
application. This p aper p resent t he r eview a nd c omparison
results f rom s everal published papers 0 n application 0 f P DC
method i n f inding t he c onductivity 0 ft he v arious t ypes 0 f
insulators. T he s cope 0 ft he review co vered solid and l iquid
insulations t ypes. I n this paper, f or s olid i nsulation the s tudied
was f ocused 0 n c ables i nsulations, el ectric machine s tator
insulation and paper i nsulator in p ower t ransformer i nsulation.
For l iquid i nsulation, the r eview a nd c omparison was done on
the biodegradable and mineral t ransformer 0 ils. T h e r e view
results show that the P DC technique s uccessfully g ive indication
on level of conductivity of the HV insulation materials. |
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