TY - JOUR
T1 - Ground method analysis of maintained distribution transformers considering reverse energy from end users
AU - Lee, Chien Hsing
AU - Hsu, Teng Chin
N1 - Funding Information:
Manuscript received November 11, 2002; revised November 23, 2005. This work was supported by the National Science Council, Taiwan, R.O.C., under Grant NSC 90-2213-E-214-054. Paper no. TPWRD-00448-2002. C.-H. Lee is with the Department of Systems and Naval Mechatronic Engineering, National Cheng Kung University, Tainan 701, Taiwan, R.O.C. (e-mail: chienlee@mail.ncku.edu.tw). T.-C. Hsu is with the Tainan Office of Taiwan Power Company, Tainan 701, Taiwan, R.O.C. (e-mail: u878506@taipower.com.tw). Digital Object Identifier 10.1109/TPWRD.2006.870991
PY - 2006/4
Y1 - 2006/4
N2 - This paper analyzes four basic ground methods for personal protection during maintained distribution transformers considering reverse energy from end users. The test in this paper considers that no loads are connected at both the primary and secondary of the distribution transformer. The results are summarized to determine the effective grounding method of protecting distribution line workers on de-energized lines during accidental-line energization from the end users. The secondary voltage at the transformer was recorded with various configurations of temporary grounds, and the primary voltage is then computed by using the transformer turn ratio. As a result, the case of installing no temporary ground is considered lethal. Moreover, the cases of installing temporary ground with a short circuit at either the primary or secondary of the transformer are considered to be the effective means of protecting distribution line workers.
AB - This paper analyzes four basic ground methods for personal protection during maintained distribution transformers considering reverse energy from end users. The test in this paper considers that no loads are connected at both the primary and secondary of the distribution transformer. The results are summarized to determine the effective grounding method of protecting distribution line workers on de-energized lines during accidental-line energization from the end users. The secondary voltage at the transformer was recorded with various configurations of temporary grounds, and the primary voltage is then computed by using the transformer turn ratio. As a result, the case of installing no temporary ground is considered lethal. Moreover, the cases of installing temporary ground with a short circuit at either the primary or secondary of the transformer are considered to be the effective means of protecting distribution line workers.
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U2 - 10.1109/TPWRD.2006.870991
DO - 10.1109/TPWRD.2006.870991
M3 - Article
AN - SCOPUS:33645738459
VL - 21
SP - 831
EP - 836
JO - IEEE Transactions on Power Delivery
JF - IEEE Transactions on Power Delivery
SN - 0885-8977
IS - 2
ER -