Aspects of overcurrent protection for feeders and motors

Author

Schweitzer, E.O., III ; Zocholl, S.E.

fYear

1994

fDate

1-5 May 1994

Firstpage

245

Lastpage

251

Abstract

This paper discusses the coordination of the characteristics and the backup and redundancy possible with microprocessor relays. The paper reviews the application of negative sequence overcurrent characteristics for unbalanced protection in motors and also covers the rules for coordination of negative sequence characteristics to provide sensitive phase to phase protection in feeders. The paper also covers reset characteristics and the requirements for stator and rotor thermal protection of induction motors

Keywords

induction motors; machine protection; microcomputer applications; overcurrent protection; power engineering computing; relay protection; rotors; stators; feeders; induction motors; microprocessor relays; negative sequence characteristics coordination; negative sequence overcurrent; overcurrent protection; phase to phase protection; rotor thermal protection; stator thermal protection; unbalanced protection; Band pass filters; Current measurement; Digital filters; Digital relays; Filtering; Induction motors; Microprocessors; Protection; Protective relaying; Universal motors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial and Commercial Power Systems Technical Conference, 1994. Conference Record, Papers Presented at the 1994 Annual Meeting, 1994 IEEE

Conference_Location

Irvine, CA

Print_ISBN

0-7803-1877-3

Type

conf

DOI

10.1109/ICPS.1994.303583

Filename

303583