A new method of grounding performance evaluation of multigrounded power systems by ground current measurement

Author

Choi, Jong-kee ; Ahn, Yong-Ho ; Ryu, Hee-Young ; Jung, Gil-Jo ; Han, Byung-Sung ; Kim, Kyung-Cheol

Author_Institution

Korea Electr. Power Res. Inst., Daejeon, South Korea

Volume

2

fYear

2004

fDate

21-24 Nov. 2004

Firstpage

1144

Abstract

Measurement of ground resistance is one of the most popular method of evaluating grounding electrode performance. Even though the deterioration of grounding performance caused by corrosion or accidental loss of electrodes can be partially detected by regular measurement of ground resistance, it is difficult to conduct the periodic measurement in case of an energized power substation with multigrounded overhead ground wires and/or distribution line neutrals interconnected with substation grounding grid. In this paper, an alternative method for grounding performance evaluation of multigrounded systems without removal of interconnections between grounding systems has been proposed. A field test result has shown the validity of the proposed test method.

Keywords

corrosion; earth electrodes; electric current measurement; electric resistance measurement; power distribution protection; power overhead lines; power system interconnection; substations; accidental loss; corrosion; current measurement; distribution line; grounding electrode; interconnected power system; multigrounded power systems; overhead ground wires; performance evaluation; power substation; resistance measurement; Current measurement; Electrical resistance measurement; Electrodes; Energy measurement; Grounding; Loss measurement; Power measurement; Power system interconnection; Power system measurements; Substations;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology, 2004. PowerCon 2004. 2004 International Conference on

Print_ISBN

0-7803-8610-8

Type

conf

DOI

10.1109/ICPST.2004.1460173

Filename

1460173