Protection system representation in the Electromagnetic Transients Program

Author

Chaudhary, Arvind K S ; Tam, Kwa-Sur ; Phadke, Arun G.

Author_Institution

Sargent & Lundy, Chicago, IL, USA

Volume

9

Issue

2

fYear

1994

fDate

4/1/1994 12:00:00 AM

Firstpage

700

Lastpage

711

Abstract

This paper concerns the addition of the few critical elements of a protection system to the Electromagnetic Transients Program (EMTP), which is one of the most widely used programs for the simulation of transients in power systems. It contains models for almost every major power system component. A protection system consists of instrument transformers, relays, and circuit breakers. Models for current transformers (CTs) and capacitor voltage transformers (CVTs) are developed, validated, and incorporated in the EPRI/DCG EMTP Version 2.0. The user can define the values of the CT and CVT parameters. Total FORTRAN capability has been added to the EMTP; new subroutines and an inbuilt structure to allow the linking of user-defined FORTRAN subroutines with the main EMTP are explained. This capability is necessary to simulate computer relay algorithms. These new features in the EMTP together constitute the critical elements of a protection system. Thus, it is now possible to simulate the dynamic interactions between a power system and a protection system

Keywords

circuit breakers; current transformers; digital simulation; potential transformers; power system analysis computing; power system protection; power system transients; power transformers; relay protection; software packages; EMTP; Electromagnetic Transients Program; FORT; algorithms; capacitor voltage transformers; circuit breakers; dynamic interactions; instrument transformers; power system protection; relays; subroutines; transients; Algorithms; Computational modeling; Current transformers; EMTP; Power system modeling; Power system protection; Power system relaying; Power system simulation; Power system transients; Protective relaying;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.296247

Filename

296247