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Metaheuristic Optimization Preliminary Design Process of Core-Form Autotransformers

机译：核心形式自耦变压器的元启发式优化初步设计过程

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Because of the strong competition in the equipment market, the aim of the manufacturers is to reduce the product price as much as possible, fulfill the high-quality standards, and improve the reliability and efficiency of the transformers. The capitalization of the costs enables to handle the different economic and technological parameters together in the same cost function. Large power autotransformers are usually designed for specific economic and technical conditions specified by the customer. At the tender design stage, the most economical solution has to be found in a limited time, and a great number of feasible transformer designs have to be compared to find the optimal solution. Nowadays, the solution of this design process is mainly based on the experience of the transformer designer, but mathematical programming models can facilitate the process. It is well known that the design of shell-type power transformers can be optimized by geometric programming. The constructed models of geometric programming can be solved accurately with the interior-point-method-based solvers. According to the results, this kind of modeling is not applicable for the core-form transformers. However, with branch-and-bound search, the geometric programming method can also be used for these cases. This paper introduces a new algorithm, which can also handle the autotransformer designs with different positions of the regulating winding by applying a more general metaheuristic routine to perform the calculation of the short-circuit impedance.
机译：由于设备市场的激烈竞争，制造商的目标是尽可能降低产品价格，满足高质量标准并提高变压器的可靠性和效率。成本的资本化使得可以在同一成本函数中一起处理不同的经济和技术参数。大功率自耦变压器通常是根据客户指定的特定经济和技术条件设计的。在招标设计阶段，必须在有限的时间内找到最经济的解决方案，并且必须对大量可行的变压器设计进行比较才能找到最佳解决方案。如今，该设计过程的解决方案主要基于变压器设计者的经验，但是数学编程模型可以简化该过程。众所周知，可以通过几何编程来优化壳型电力变压器的设计。可以使用基于内点法的求解器来精确地求解所构造的几何规划模型。根据结果​​，这种建模不适用于铁心形式的变压器。但是，在分支和边界搜索中，几何编程方法也可以用于这些情况。本文介绍了一种新算法，该算法还可以通过应用更通用的元启发式例程来执行短路阻抗的计算，从而在调节绕组的不同位置处处理自耦变压器的设计。

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