Tan Delta and Capacitance Characteristics of Underground XLPE Cables – 11 kV
There are several appropriate techniques can be used in order to show the characteristics of aged and unaged underground XLPE cables after sometime in service. From the characteristics, performance of the cables can be evaluated. One of the techniques is based on tan delta and capacitance measuremen...
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| Format: | Conference or Workshop Item |
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| Online Access: | http://eprints.uthm.edu.my/2846/ http://eprints.uthm.edu.my/2846/1/042%2D046.pdf |
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| Summary: | There are several appropriate
techniques can be used in order to show the
characteristics of aged and unaged underground
XLPE cables after sometime in service. From the
characteristics, performance of the cables can be
evaluated. One of the techniques is based on tan
delta and capacitance measurements of the cable
insulation. This study focuses on underground
XLPE cables which rated at 11 kV for both 1-core
and 3-core types. Tan delta and capacitance data
of underground XLPE cables are obtained using a
Schering bridge instrument. The measurements
are performed at the temperature about 29oC and
50 Hz power frequency. The analysis of data
shows that tan delta values are increased in
proportion to the aging factors and voltage
stressed. Meanwhile the capacitance values of the
cable insulator are increased and decreased in
proportion to the aging factors and voltage
stressed. Therefore, tan delta and capacitance are
the useful parameters for evaluating the quality of
underground XLPE cables insulator. |
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