A study on the performance of underground XLPE cables insulation using Tan d and capacitance measurements
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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2009
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| நிகழà¯à®¨à®¿à®²à¯ˆ அணà¯à®•à®²à¯: | http://eprints.uthm.edu.my/2762/ http://eprints.uthm.edu.my/2762/1/2009%2D3036%2DFinal.pdf |
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| தொகà¯à®ªà¯à®ªà¯: | 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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