Abstract
Reliability assessment of a distribution system is usually concerned with the system performance at the customer end, i.e. at the load points. The basic indices [1] normally used to predict the reliability of a distribution system are: load point failure rate, average outage duration and annual unavailability. The basic indices are important from an individual customer’s point of view but they do not provide an overall appreciation of the system performance. An additional set of indices can be calculated using these three basic indices and the number of customers/load connected at each load point in the system. Most of these additional indices are weighted averages of the basic load point indices. The most common additional or system indices [1] are; System Average Interrruption Frequency Index (SAIFI), System Average Interruption Duration Index (SAIDI), Customer Average Interruption Duration Index (CAIDI), Average Service Availability Index (ASAI), Average Service Unavailability Index (ASUI), Energy Not Supplied (ENS) and Average Energy Not Supplied (AENS).
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References
Billinton, R. and Allan, R.N., “Reliability Evaluation Of Power Systems,” Longman, London (England)/ Plenum Publishers, New York, (1984).
Billinton, R., Billinton, C.J. and Billinton, J.E., “Service Continuity Performance Of Canadian Electric Power Utility — A Historical Perspective,” Proceedings of the 14th Inter-RAM Conference. IEEE 1987 CH. May 1987.
Patton, A.D., “Probability Distribution of Transmission And Distribution Reliability Performance Indices,” 1979 Reliability Conference for the Electric Power Industry, pp. 122–123, (1979).
Billinton, R., Wojczynski, E. and Rodych, V., “Probability Distributions Associated With Distribution System Reliability Indices,” 1980 Reliability Conference for the Electric Power Industry, (1980).
Billinton, R. and Wojczynski, E., “Distributional Variation Of Distribution System Reliability Indices,” IEEE Transactions PAS-104, No. 11, pp. 3152–3160, (1985).
Billinton, R., Wojczynski, E. and Godfrey, M., “Practical Calculations Of Distribution System Reliability Indices And Their Probability Distributions,” CEA Transactions, (1981).
Billinton, R. and Goel, R., “An Analytical Approach To Evaluate Probability Distributions Associated With The Reliability Indices Of Electric Distribution System,” IEEE 86 WM 156–4, (1986).
Johnsson, N.L., Nixon, E. and Amos, D.E., “Table Of Percentage Points Of Pearson Curves,” Biometrika, Volume 50, pp. 459–498, (1963).
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© 1988 Kluwer Academic Publishers
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Billinton, R., Allan, R.N. (1988). Distribution System Adequacy Evaluation. In: Reliability Assessment of Large Electric Power Systems. The Kluwer International Series in Engineering and Computer Science. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1689-3_4
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DOI: https://doi.org/10.1007/978-1-4613-1689-3_4
Publisher Name: Springer, Boston, MA
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