Simulation of Electromagnetic Wave and Surface Current Caused by PD for Seeking Better Detection Sensitivity by TEV Sensor Attached with a Bucket
Fauzan A.a,b, Khayam U.b, Suwarnob, Hiromasa Y.c, Kozako M.c, Hikita M.c
a PT PLN (Persero), Jakarta, Indonesia
b School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Indonesia
c Department of Electrical and Electronic Engineering, Kyushu Institute of Technology, Japan
Abstract
© 2018 IEEE.Partial discharge (PD) is one of electrical phenomena which might occur in high voltage (HV) cable joint. Many methods have been tried to detect PD for cable joints installed in a manhole. Among them, an attempt is made to detect PD by transient earth voltage (TEV) sensor attached inside a metal bucket which is brought down into the manhole. This PD detection method can be used to diagnose the cable joint condition and to ensure safety of the personnel before entering the manhole. This paper presents simulation of electromagnetic wave emitted by PD and induced surface current flowing on the surface of the metal bucket to enhance the PD detection sensitivity. The simulation was made with a three-dimension finite difference time domain (FDTD) simulation software (CTC Co.; MAGNA TDM version 8.3) by changing the bucket depth, diameter, aperture angle and material, as well as excitation frequency of PD source and distance from the bucket. As a result, it was found that an optimal metal bucket shape providing the highest detection sensitivity in terms of the surface current is bucket with 0° aperture angle (cylindrical shape), outer diameter 300 mm, bucket depth 150 mm for iron material with 1mm in thickness under the circumstances of the manhole in which the cable joints are installed.
Author keywords
Cylindrical shapes,Detection sensitivity,Electrical phenomena,Excitation frequency,Finite-difference time-domain simulation,High voltage cable,simulation,Three dimensions
Indexed keywords
FDTD,metal bucket,partial discharge,simulation,TEV