Publication: Simulation of TDR measurement for XLPE cable
Date
2014
Authors
Mohd Fidhzuan Abd Rahim
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Abstract
Wave propagation characteristic of a single phase medium voltage cross-linked- polyethylene (XLPE) cable is determined by using Time Domain Reflectometry (TDR). TDR has commonly used for testing and diagnosis faults along the transmission lines. It involved sending pulse along a cable by using an oscilloscope to observe the reflected pulses. The wave propagation characteristic of underground MV cables is usually determined by theory of natural modes propagation. By using electrical circuit analysis and transmission line theory, the relationship between the actual and the reflected pulses from the test cable to the reflected pulse measured from an oscilloscope can be obtained. In practice the actual reflected pulse cannot be obtained directly from test cable. In actual field test cable is usually lossy cables. Therefore by using simulation of TDR in PSpice circuit it delivered the wave propagation characteristic which is attenuation. By using the high frequency XLPE cable model, the distributed parameters which consists of R, resistance per-unit length (/m), L, inductance per-unit length (H/m), C, capacitance per-unit length (F/m), G, conductance per-unit length (S/m) is represented and applied in the TDR PSpice circuit simulation. Therefore, it is very important to develop high frequency XLPE cable model parameters. In addition, TDR measurement system for XLPE cables are studied and become as a simulation study using PSpice software. Moreover, this dissertation as a reference guides to study how wave propagate in TDR measurement system for testing and diagnosing of XLPE cable.
Description
TK3351.M63 2014
Keywords
Electric cables - insulation