A study on the performance of underground XLPE cables insulation using Tan d and capacitance measurements

Ponniran, Asmarashid and Mohd Jamail, Norakmal (2009) A study on the performance of underground XLPE cables insulation using Tan d and capacitance measurements. In: 3rd International Power Engineering and Optimization Conference (PEOCO 2009) , 3-4 June 2009, Shah Alam, Selangor.

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Abstract

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.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Tan d; Capacitance; underground XLPE cables; Schering Bridge
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3001-3521 Distribution or transmission of electric power
Divisions:Faculty of Electrical and Electronic Engineering > Department of Electrical Power Engineerings
ID Code:2762
Deposited By:Normajihan Abd. Rahman
Deposited On:08 Nov 2012 15:07
Last Modified:08 Nov 2012 15:07

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