Metaheuristic Optimization Preliminary Design Process of Core-Form Autotransformers

Impact of the Cooling Equipment on the Key Design Parameters of a Core–Form Power Transformer

“…To formulate a problem in GP format, the equality constraints shall be formulated in monomial form, and the inequalities in a special posynomial form [26]. The previous articles of the authors [24,25] have shown that the short circuit impedance cannot be formulated in either monomial nor in posynomial format properly. A solution for the problem has be shown by the combination of this method with a branch and bound search [25].…”

“…Therefore in the last decades, a wide range of mathematical optimisation methods have been implemented for this design optimisation problem, such as Monte Carlo simulation [18], artificial intelligence techniques and neural networks [19], evolutionary and genetic algorithms [13][14][15][16][17][18], and geometric programming (GP) [1,20,24,25]. The importance of GP is based on the recent developments in the solution methods, which can solve even large-scale GPs extremely efficiently and accurately [26][27][28].…”

“…The importance of GP is based on the recent developments in the solution methods, which can solve even large-scale GPs extremely efficiently and accurately [26][27][28]. The authors have shown a general metaheuristic approach, which is based on the GP and capable to determine any core-form power transformer designs [25]. All of the reviewed methods [14], including the previously mentioned meta-heuristic optimisation method [25], are focused on the design of the active part of the transformer, which consists of the manufacturing price of the core and the windings, only.…”

“…The authors have shown a general metaheuristic approach, which is based on the GP and capable to determine any core-form power transformer designs [25]. All of the reviewed methods [14], including the previously mentioned meta-heuristic optimisation method [25], are focused on the design of the active part of the transformer, which consists of the manufacturing price of the core and the windings, only. These models have a satisfactory level of accuracy in the absolute value of the TCO, hence these papers do not deal with the cost of the insulation oil and the radiator banks in the case of coreform power transformers.…”

Transformatör sisteminde manyetik akı dağılımının incelenmesi yöntemiyle güç kayıplarının belirlenmesi

“…Hareketli parçaları olmayan ve stabil olarak çalışan transformatör sistemlerinde gelişen teknolojiye paralel olarak verimlilik sınırları günden güne yukarıya taşınmaktadır. Transformatörün yapısında bulunan ferromanyetik malzemelerin özelliklerinin iyileştirilmesi, malzemenin boyutlarının küçültülmesi, yapı içinde bulunan yabancı maddelerin uzaklaştırılması, nüve geometrisinin değiştirilmesi verimliliğin arttırılması için yapılan başlıca işlemlerdendir [3][4][5][6][7][8] . Bunun yanı sıra transformatör sistemlerindeki kayıpların belli bir kısmı kullanılan ferromanyetik malzemenin manyetik indüksiyon davranışından kaynaklanır.…”