Solving for three phase conductively isolated busbar voltages using phase component analysis

Journal Article · Wed Feb 01 04:00:00 EST 1995 · IEEE Transactions on Power Systems

DOI:https://doi.org/10.1109/59.373932· OSTI ID:49195

Anderson, D M ^[1]; Wollenberg, B F ^[2]

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1. ESA Power Systems, Inc., Plymouth, MN (United States)
2. Univ. of Minnesota, Minneapolis, MN (United States)

Three phase busbar voltage solutions, derived from the Y-bus network model and unbalanced current injections, are used in a variety of three phase power system network analysis applications, such as Z-bus power flow and short circuit studies. When phase coordinate analysis is used to solve these problems, existing techniques can result in divide-by-zero errors. These errors occur when the network contains one or more islands conductively isolated from the ground. This paper combines the limit processes of calculus and linear circuit analysis to derive an algorithm which can perform a LDL factorization of the phase coordinate Y-bus model of such networks. This factorization can then be used to solve for voltages in islands conductively isolated from ground, yet energized through magnetic coupling to one or more islands with a ground reference.

• OSTI ID: 49195
• Report Number(s): CONF-940110--
• Journal Information: IEEE Transactions on Power Systems, Journal Name: IEEE Transactions on Power Systems Journal Issue: 1 Vol. 10; ISSN ITPSEG; ISSN 0885-8950
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
COMPUTER CALCULATIONS
ELECTRIC GROUNDS
ELECTRIC POTENTIAL
NUMERICAL ANALYSIS
POWER SYSTEMS