Computing the internal transient voltage response of a transformer with a nonlinear core using Gear`s method. Part 1: Theory

Journal Article · Sun Oct 01 00:00:00 EDT 1995 · IEEE Transactions on Power Delivery

DOI:https://doi.org/10.1109/61.473372· OSTI ID:152909

Vakilian, M; Degeneff, R C; Kupferschmid, M ^[1]

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1. Rensselaer Polytechnic Institute, Troy, NY (United States)

An EHV transformer`s insulation structure must be designed to withstand the internal stresses generated during transients. Computer models are employed for predetermination of these stresses. This paper develops a detailed transformer model and solution method which represents the nonlinear, saturable characteristic of the magnetic core during transients. The resulting set of stiff nonlinear differential algebraic equations (DAE`s) are solved by application of Gear`s method. Part 1 describes the transformer model and the necessary set of equations based on linearization of the iron core`s saturable magnetic characteristic each time interval. Part 2 presents data verifying the methodology.

• OSTI ID: 152909
• Report Number(s): CONF-950103-; ISSN 0885-8977; TRN: IM9602%%116
• Journal Information: IEEE Transactions on Power Delivery, Vol. 10, Issue 4; Conference: Winter meeting of the IEEE Power Engineering Society, New York, NY (United States), 29 Jan - 2 Feb 1995; Other Information: PBD: Oct 1995
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
EHV AC SYSTEMS
TRANSFORMERS
ELECTRICAL TRANSIENTS
RESPONSE FUNCTIONS
COMPUTERIZED SIMULATION