An improved fault analysis algorithm for unbalanced multi-phase power distribution systems

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.311160· OSTI ID:7230476

Halpin, S M ^[1]; Grigsby, L L; Gross, C A; Nelms, R M ^[2]

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1. Mississippi State Univ., Mississippi State, MS (United States). Dept. of Electrical and Computer Engineering
2. Auburn Univ., AL (United States). Dept. of Electrical Engineering

The results of an improved method for fault calculations in unbalanced multi-phase power distribution systems containing non-utility generators and large induction motor loads are presented in this paper. The method utilizes a combined time- and frequency-domain analysis approach to produce results that are superior to those obtained in classical fault analysis without demanding the large increase in computer time associated with complete time-domain solutions. Sources and loads can be represented by either classical frequency-domain models or detailed differential equation models. The potentially unbalanced power distribution system is represented by an admittance matrix formed using a linear graph-based application of ac circuit theory. The time-domain differential equation source and load models are interfaced with the frequency-domain distribution system model using time series analyses to estimate equivalent voltage and current phasors from discrete data sets.

• OSTI ID: 7230476
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States) Vol. 9:3; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240201* -- Power System Networks
Transmission & Distribution-- AC Systems-- (1990-)
ELECTRIC GROUNDS
ELECTRICAL FAULTS
ELECTRICAL TRANSIENTS
POWER DISTRIBUTION SYSTEMS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TRANSIENTS
VOLTAGE DROP