Proposed statistical performance measures for microprocessor-based transmission-line protective relays. I. Explanation of the statistics

Author

Udren, Eric A. ; Zipp, J.A. ; Michel, G.L. ; Mustaphi, K.K. ; Nilsson, S.L. ; Phadke, A.G. ; Ramaswami, R. ; Rockefeller, G.D. ; Sachdev, M.S. ; Thorp, James S. ; Tziouvaras, D.A. ; Wagner, C.L.

Volume

12

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

134

Lastpage

143

Abstract

The paper presents practical calculations and novel techniques for collecting performance data from protective relays. The methods are focused on, but not limited to, microprocessor-based transmission line relaying systems. Standard definitions are presented for availability, dependability, security, hardware MTBF, relaying MTBF, repair time, and other measures of interest for specific relay types. The paper explains the novel concept of exposures, the key to a standardized security measure. With these standard measures, relay users will be able to compile the first consistent industry-wide data base for relay performance assessment

Keywords

failure analysis; microcomputer applications; power engineering computing; power system protection; power system relaying; power system reliability; power system security; power transmission lines; relay protection; statistical analysis; availability; dependability; hardware MTBF; microprocessor-based transmission-line protective relays; performance data collection; relay performance assessment; relaying MTBF; repair time; security; statistical performance measures; statistics explanation; Availability; Data security; Digital relays; Hardware; Measurement standards; Power system protection; Power system relaying; Protective relaying; Statistics; Transmission lines;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.568233

Filename

568233