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Effect of three-winding transformer models on the analysis and protection of mine power systems.

Authors
Oommen-MP; Kohler-JL
Source
IEEE Trans Ind Appl 1999 May/Jun; 35(3):670-674
NIOSHTIC No.
20023222
Abstract
Computer-aided loadflow and fault analyses of mine power systems are routinely conducted to ascertain system performance and also to provide information to assist in the protection and coordination of these systems. Three-winding transformers are frequently encountered in mining applications, typically at continuous miner and longwall sections where there exists a need for dual utilization voltages. These transformers are often modeled as a three-bus system neglecting the secondary to tertiary winding impedance and the effect of base changes. This paper analyzes the impact of more accurate transformer models on voltages and fault currents which are realized from loadflow and fault studies of mine power systems.
Keywords
Mining-industry; Power-generation; Electrical-systems; Electrical-transmission; Electric-power-generation
CODEN
ITIACR
Publication Date
19990501
Document Type
Journal Article
Fiscal Year
1999
NTIS Accession No.
NTIS Price
Issue of Publication
3
ISSN
0093-9994
NIOSH Division
PRL
Source Name
IEEE Transactions on Industry Applications
State
PA
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