DocumentCode
1273979
Title
Diagnosis of breaks in substation´s grounding grid by using the electromagnetic method
Author
Zhang, Bo ; Zhao, Zhibin ; Cui, Xiang ; Li, Lin
Author_Institution
Dept. of Electr. Eng., North China Electr. Power Univ., Hebei, China
Volume
38
Issue
2
fYear
2002
fDate
3/1/2002 12:00:00 AM
Firstpage
473
Lastpage
476
Abstract
According to the method of moment, a new method to analyze the grid fed by harmonic currents is presented. The method can be used for the condition that the grid is in at least ten-layer soil with a frequency of the injected currents up to 1 MHz. There can be more than one injected current, and the grounding conductor of the grid can be put in any form. Validation of the method is presented by comparing it with other existing methods. As an application of the presented method, breaks in the substation´s grounding grid are diagnosed by the measured voltages on the surface of the ground
Keywords
earth electrodes; electromagnetic fields; harmonics; inhomogeneous media; soil; substations; electromagnetic method; grid grounding conductor; injected currents; nonhomogeneous media; substation grounding grid; ten-layer soil; Conductors; Frequency; Grounding; Harmonic analysis; Inductance; Moment methods; Performance analysis; Soil; Surface resistance; Voltage;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.996125
Filename
996125
Link To Document