Modeling overcurrent relay characteristics

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1992Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Computer Applications in Power, volume 5, pages 41-45 (issn: 0895-0156,

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Authors: S. Chan; R. Maurer;

doi: 10.1109/67.111471

Modeling overcurrent relay characteristics

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Abstract

An approach to computer modeling of the time-current characteristics of protective devices that relies on interactive manipulation and fitting of the curves, which are modeled mathematically as splines is presented. The approach is much easier to use than the commonly used curve-fitting methods, which are reviewed, and it does not require a digitizer. It has been applied successfully in a PC-based short-circuit and relay coordination program for overcurrent relays, fuses, and reclosers. >

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