Using TACS functions within EMTP to teach protective relaying fundamentals

Author

Wall, Richard W. ; Johnson, Brian K.

Author_Institution

Dept. of Electr. Eng., Idaho Univ., Boise, ID, USA

Volume

12

Issue

1

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

3

Lastpage

10

Abstract

The purpose of this discussion is to provide an educational tool for investigating relaying concepts by modeling digital relays using TACS functions within EMTP in a closed-loop manner. Various elements of digital protection systems are identified and organized to generate an systematic approach to modeling the actual hardware of relay systems. Discussion is limited to conventional relaying systems that monitor the vitality of the 60 fit voltages and/or currents. TACS functions for transport delay and pulse generators are used to model dynamics associated with analog to digital conversion and sampling systems. DSP algorithms convert a sequence of sampled data into a sequence of values for magnitude and phase components. A simple example of a time overcurrent relay is developed to demonstrate the techniques to implement relay control in EMTP with TACS and illustrates the kinds of phenomena that can be studied using these techniques

Keywords

computer aided instruction; power engineering education; power system analysis computing; power system protection; power system relaying; DSP algorithms; EMTP; TACS functions; computer simulation; educational tool; power system protective relaying; pulse generators; time overcurrent relay; transport delay; Analog-digital conversion; Delay; Digital relays; EMTP; Hardware; Monitoring; Protection; Protective relaying; Pulse generation; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.574917

Filename

574917