Digital relays and reliability improvement in the power supply for a critical process plant

Author

Neto, Francisco Rennó ; Teixeira, Edilberto Pereira ; Basso, Marco Antônio

Volume

2

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

1298

Abstract

The impact of digital relays in the protection of industrial electric power systems is analyzed in this paper. The interaction of digital relays with other industry devices such as sensors and programmable logical controllers is described, including some information about the data networks that are used in industry. An example of this interaction is also presented showing how a digital relay can work together with programmable logical controller to protect a large motor.

Keywords

electric motors; electric sensing devices; industrial power systems; machine protection; power system protection; programmable controllers; relay protection; critical process plant; data networks; digital relays; industrial electric power systems; motor protection; power supply; programmable logical controllers; reliability improvement; sensors; Circuit faults; Communication system control; Digital relays; Electrical equipment industry; Power engineering and energy; Power supplies; Power system protection; Power system relaying; Protective relaying; Substations;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257718

Filename

1257718