Application of queuing system for increasing reliability index of power supply systems
2020
Efanov, A., Stavropol State Agrarian Univ. (Russian Federation) | Bogatyrev, N., Kuban State Agrarian Univ. named after I.T. Trubilin, Krasnodar (Russian Federation) | Yastrebov, S., Stavropol State Agrarian Univ. (Russian Federation) | Yarosh, V., Stavropol State Agrarian Univ. (Russian Federation)
The paper considers the use of a delay queuing system for increasing the reliability of power supply systems for agricultural electricity consumers, which has been estimated using SAIDI. At the same time, both the mode of current operation of distribution electric networks and the mode of emergence of mass failures in electric networks under the influence of unfavourable weather factors have been considered. The reliability of power supply has been estimated by the value of SAIDI, and the change in this index occurs by reducing the time to eliminate interruptions in power supply to consumers by determining the required number of repair personnel. The determination of the number of repair personnel has been carried out using a delay queuing system in transient modes. The choice of the required number of repair personnel has been based on the numerical solution of differential equations describing the delay queuing system, using the criterion of the optimal delay in servicing of requests for eliminating interruptions in power supply to consumers. The calculations have been carried out both for the stationary value of the request flow parameter for eliminating interruptions in power supply, and for the cases of step change in the request flow parameter. According to the results of the calculations, the dependence of SAIDI on the number of repair personnel and the optimal number of repair personnel at economically justified costs for eliminating interruptions in power supply to consumers have been determined.
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