NDLI: A critical survey of considerations in maintaining process continuity during voltage dips while protecting motors with reclosing and bus-transfer practices

Content Provider	IEEE Xplore Digital Library
Author	Mulukutla, S.S. Gulachenski, E.M.
Copyright Year	1991
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA (Mulukutla, S.S.)
Abstract	Continuous-process plants, such as petro-chemical industries and paper mills with thermomechanical pulping, are being designed with fewer and larger components arranged in single-train configurations. Maintaining operating continuity with fewer components requires high equipment reliability. Motor controls for large components are using magnetic contactors equipped with automatic undervoltage reclosing. A voltage dip where contractors drop open and reclose can be very serious because of the nature of the motors and their driven loads during voltage transients. The general nature of the problem and criteria for safe reclosing or transfer of several motors on the same bus are presented. The mathematical development and modeling techniques for induction and synchronous motors are indicated, and simple easy-to-use expressions are given for determining the currents and torques due to out-of-phase reclosing. Various protective schemes against out-of-phase reclosing and transfer, as well as methods of riding through voltage dips, are discussed.
Starting Page	266
Ending Page	272
File Size	656936
Page Count	7
File Format	PDF
ISBN	0780302192
DOI	10.1109/TDC.1991.169518
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-09-22
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Synchronous motors Maintenance Voltage fluctuations Chemical industry Pulp and paper industry Paper mills Thermomechanical processes Motor drives Contactors Mathematical model
Content Type	Text
Resource Type	Article

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