Rodríguez-Sanabria, Doeg

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    Comparative framework for service reliability in electric distribution systems
    (2005) Rodríguez-Sanabria, Doeg; O’Neill-Carrillo, Efraín; College of Engineering; Cedeño-Maldonado, José R.; Ramírez-Orquín, Alberto; Department of Electrical and Computer Engineering; Rodríguez-Sanabria, Doeg
    Reliability indices are becoming the cornerstone for a liberalized energy market, and the main component of performance based rates (PBRs). Yet, comparison of reliability indices from intrinsically different systems provides arguable results. A method producing coherent, comparable reliability numbers was sought after. The framework would be used to compare reliability index results from intrinsically different distribution systems. A theoretical foundation for a comparative framework for electric distribution service indices was developed. Reliability indices were calculated based on the current standards used by the industry for qualifying service. A mathematical model for the framework was proposed, and several implementation methods considered. General implementation guidelines for the model are included in the document. Actual field data from varying utilities were used for the completion of this project. Of the field data, fault cause and outage analysis was completed. Additionally, these results were compared to those of previous studies on the subject of outage occurrences and fault causes. Indices for unique systems or system areas with and without the use of the framework were obtained. Results obtained from application of the framework to actual distribution systems are presented in the document. The scope of the project was seven years, for which actual system data was made available.