Reliability Analysis of Substation Monitoring Systems Based on Branch PMUs

Author

Gomez, Oscar ; Portilla, Cesar ; Rios, Mario A.

Author_Institution

Sch. of Eng., Univ. de Los Andes, Bogota, Colombia

Volume

30

Issue

2

fYear

2015

fDate

Mar-15

Firstpage

962

Lastpage

969

Abstract

This paper presents the application of fault tree analysis to calculate the probability of failure of a substation monitoring system based on branch phasor measurement units. Results of the fault tree analysis are used in a reliability-based model for the contingency-constrained phasor measurement units (PMUs) placement to find the minimum number of substations where the branch PMUs must be located for enhancing the wide area monitoring system reliability. The algorithm selects the minimal number of substations to monitor the power system under normal operation and the most credible contingencies. Finally, four indexes will be computed to evaluate the robustness of any monitoring system placement solution. The methodology is tested on the IEEE 9-bus and IEEE 57-bus test systems.

Keywords

failure analysis; fault trees; phasor measurement; probability; reliability; substations; PMU placement; branch PMU; branch phasor measurement units; contingency-constrained phasor measurement units; failure probability; fault tree analysis; reliability analysis; substation monitoring systems; wide area monitoring system reliability; Monitoring; Phasor measurement units; Power system reliability; Reliability; Substations; Transmission line measurements; Voltage measurement; Fault tree analysis; PMU placement; phasor measurement unit (PMU); reliability evaluation; substation monitoring system; wide area monitoring system (WAMS);

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2014.2330736

Filename

6844899