Abstract
Improved non-dominated sorting genetic algorithm-II (INSGA-II) implementation for the assignment of the optimal location and tap changer adjustment related to flux-lock type superconducting fault current limiter with tap changer (TC-FLSFCL) is presented in this paper. TC-FLSFCL is a flexible SFCL that has preference over previous SFCLs. In this type of SFCL the current limiting characteristics are improved and the fault current limiting level during a fault period can be adjusted by controlling the current in the third winding, which also makes the magnetic field apply to the high-Tc superconducting (HTSC) element. Three objective functions, based on reliability index, reduction of fault current, and number of installed TC-FLSFCL, are systematized and improved non-dominated sorting genetic algorithm-II (INSGA-II) style is then formed in the search for the best location and tuning of the tap changer of TC-FLSFCL to meet the fitness requirements. A decisionmaking procedure based on the technique for order preference by similarity to ideal solution (TOPSIS) is used for finding the best compromise solution from the set of Pareto-solutions obtained by INSGA-II. In a distribution network as bus 4 of Roy Billinton test system (RBTS), comparative analysis of the results obtained from the application of the resistive SFCL (RSFCL) and TC-FLSFCL is presented. The results show that optimal placement of TC-FLSFCL compared with RSFCL can improve reliability index and fault current reduction index with a less number.
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Hashemi, Y., Valipour, K. & Hashemi, B. INSGA-II implementation for optimal placement and design of flux-lock type superconducting fault current limiter with tap changer for improving distribution system reliability. Russ. Electr. Engin. 86, 226–238 (2015). https://doi.org/10.3103/S1068371215040124
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DOI: https://doi.org/10.3103/S1068371215040124