Breaker pole scatter and its effect on quadrilateral ground distance protection

Author

Ryan, James ; Shrestha, Arun ; Thanh-Xuan Nguyen

Author_Institution

Florida Power & Light Co., FL, USA

fYear

2015

fDate

March 30 2015-April 2 2015

Firstpage

488

Lastpage

497

Abstract

In this paper, the effect of breaker pole scatter on quadrilateral ground distance elements is investigated using a simple two-source power system with two short transmission lines. A case study of an unintended operation of a Zone 1 quadrilateral ground distance element due to the delayed opening of a breaker pole in an actual system is presented. A simple solution based on relay logic is proposed to improve the security of quadrilateral ground distance elements. The effectiveness of the proposed solution is verified by running a real-time test using a Real Time Digital Simulator (RTDS®).

Keywords

circuit breakers; poles and towers; power transmission lines; power transmission protection; real-time systems; RTDS; breaker pole scatter; quadrilateral ground distance elements; quadrilateral ground distance protection; real time digital simulator; real-time test; relay logic; short transmission lines; simple two-source power system; unintended operation; Circuit faults; Fault currents; Impedance; Interrupters; Power transmission lines; Relays; Resistance;

fLanguage

English

Publisher

ieee

Conference_Titel

Protective Relay Engineers, 2015 68th Annual Conference for

Conference_Location

College Station, TX

Print_ISBN

978-1-4799-8721-4

Type

conf

DOI

10.1109/CPRE.2015.7102187

Filename

7102187