Determination of optimal site and size of DG and capacitor in distribution system considering feeder’s failure rate and time varying load to minimize power losses by HSS algorithm.

Tavakolian, Ali (2018) Determination of optimal site and size of DG and capacitor in distribution system considering feeder’s failure rate and time varying load to minimize power losses by HSS algorithm. Masters thesis, University of Mohaghegh Ardabili.

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Text (تعيين مکان و اندازه بهینه DG و بانک خازنی در شبكه توزيع با در نظرگرفتن نرخ شکست فیدر و بار متغیر با زمان به منظور حداقل کردن تلفات با استفاده از الگوریتم HSS) Ali Tavakolian.pdf Download (880kB) | Preview

Abstract

In this thesis, the simultaneous placement of distributed generation and Capacitor with consideration of reconfiguration was performed by the HSS algorithm. Different loading models (residential, commercial and industrial) have been used to increase the exactitude of simulation which vary according to daily and annual load curves. the branch failure rate via linear, exponential, logarithmic and power models is dependent on magnitude of the current flowing through the branch, and ultimately its effect on placement problem is investigated. In the following, the reconfiguration problem has been added to the previous cases and the necessity of simultaneous optimization of the above items has been proved in this thesis. However, with addition of optimization of the distribution network structure to problem of equipment placement, technical, economical and reliability conditions of system is improved, but due to the increase in the number of variables and nonlinear constraints in the above problem, the optimal procedure It is much more complex and the considered modeling concepts such as reliability become more difficult. The objective function is including the fixed and variable costs at the studied system to increase the efficiently of the system. The fixed cost of the system is including the cost of installing and purchasing distributed generation and capacitor and variable costs is including repair and maintenance of the distributed generation and capacitor, and the cost of system risk. The reason for naming variable costs is that these costs vary by time, and for considering these changes, inflation rate and interest rate are used. Studies have been carried out on 28 bus and 33 standard bus networks with multiple states and the results confirm the model's performance and proposed solving method. Keywords: Simultaneous Placement, Capacitor, Distributed Generation, Reliability, feeder’s failure rate models, Reconfiguration.

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