Evaluation of grounding performance of energized substation by ground current measurement
- Authors
- Choi, J. K.; Ahn, Y. H.; Woo, J. W.; Jung, G. J.; Han, B. S.; Kim, K. C.
- Issue Date
- Sep-2007
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- ground resistance; grounding system; substation; fall-of-potential method
- Citation
- ELECTRIC POWER SYSTEMS RESEARCH, v.77, no.11, pp.1490 - 1494
- Journal Title
- ELECTRIC POWER SYSTEMS RESEARCH
- Volume
- 77
- Number
- 11
- Start Page
- 1490
- End Page
- 1494
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/23546
- DOI
- 10.1016/j.epsr.2006.08.028
- ISSN
- 0378-7796
- Abstract
- Substation grounding systems typically build up a large network of various grounding electrodes, which consists of a substation grounding grid, multi-grounded transmission line skywires and distribution line neutral wires. Although the fall-of-potential (FOP) method has been widely used for ground resistance measurement, it is difficult to use the method in case of such a substation grounding system because of the difficulty of interpretation of the measured FOP profile. In this paper, we have presented a practical example of ground resistance measurement in a 154 kV substation under commercial operating condition. Conventional FOP tests and the measurement of ground current splits to each part of the grounding system were conducted simultaneously. A simple interpretation method of FOP profiles, with the measured ground current splits, has been suggested. (C) 2006 Elsevier B.V. All rights reserved.
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Collections - College of Science and Technology > Department of Electronic and Electrical Engineering > 1. Journal Articles
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