Frequency of forced outages for subtransmission circuit breakers: Statistical analysis of data for the period 2005-15

Nhlanhla Mbuli; Siyabonga Sikhakhane; Modisane Seitshiro; Jan Harm C. Pretorius

doi:10.15199/48.2020.03.23

Frequency of forced outages for subtransmission circuit breakers: Statistical analysis of data for the period 2005-15

Nhlanhla Mbuli, Siyabonga Sikhakhane, Modisane Seitshiro, Jan Harm C. Pretorius

Postgraduate School of Engineering Management

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

This paper presents the results of the analysis of 2 124 forced outages for Eskom subtransmission circuit breakers recorded over the years 2005-15. Statistical techniques are used in the study. Firstly, the actual number of outages and outage rates are calculated and assessed for various event attributes. Further, the dependence between pairs of event attributes is evaluated graphically by plotting bivariate bar graphs and thereafter quantitatively by performing the chi-square test to assess the significance of the results. The insights gained are useful in the management of these breakers.

Original language	English
Pages (from-to)	98-106
Number of pages	9
Journal	Przeglad Elektrotechniczny
Volume	96
Issue number	3
DOIs	https://doi.org/10.15199/48.2020.03.23
Publication status	Published - 2020

Keywords

Chi-square test
Circuit breaker
Forced outage

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.15199/48.2020.03.23

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abstract = "This paper presents the results of the analysis of 2 124 forced outages for Eskom subtransmission circuit breakers recorded over the years 2005-15. Statistical techniques are used in the study. Firstly, the actual number of outages and outage rates are calculated and assessed for various event attributes. Further, the dependence between pairs of event attributes is evaluated graphically by plotting bivariate bar graphs and thereafter quantitatively by performing the chi-square test to assess the significance of the results. The insights gained are useful in the management of these breakers.",

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AU - Mbuli, Nhlanhla

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AU - Seitshiro, Modisane

AU - Pretorius, Jan Harm C.

PY - 2020

Y1 - 2020

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AB - This paper presents the results of the analysis of 2 124 forced outages for Eskom subtransmission circuit breakers recorded over the years 2005-15. Statistical techniques are used in the study. Firstly, the actual number of outages and outage rates are calculated and assessed for various event attributes. Further, the dependence between pairs of event attributes is evaluated graphically by plotting bivariate bar graphs and thereafter quantitatively by performing the chi-square test to assess the significance of the results. The insights gained are useful in the management of these breakers.

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ER -

Frequency of forced outages for subtransmission circuit breakers: Statistical analysis of data for the period 2005-15

Abstract

Keywords

ASJC Scopus subject areas

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