Digital teleprotection units. A technology overview

Author

Fischer, D. ; Madge, R.

Author_Institution

Ontario Hydro, Toronto, Ont., Canada

Volume

7

Issue

4

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

1769

Lastpage

1774

Abstract

The authors describe a generic digital teleprotection unit (DTU) and discuss the technical characteristics of current commercial systems. A generic DTU contains a transmitter section, a receiver section and a status section. Some DTUs have a unidirectional option eliminating either the receiver section or the transmitter section. The transmitter section contains an input block, a transmitter logic block and a transmitter block. The receiver consists of a receiver block, a receiver logic block and an output block. The status section contains a selftest block and an alarm block. These subsystems are discussed. a comparison is made between DTUs and their analogue counterparts in the area of transfer trip delay. A direct transfer trip system utilizing redundant DTUs is proposed

Keywords

digital communication systems; power system protection; receivers; transmitters; alarm block; direct transfer trip system; generic digital teleprotection unit; receiver logic block; receiver section; selftest block; status section; transfer trip delay; transmitter logic block; transmitter section; Auxiliary transmitters; Communication system control; Digital communication; Digital relays; Fiber optics; Logic; Multiplexing; Optical control; Optical transmitters; Protection;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.156977

Filename

156977