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Total cost of ownership analysis of 60 MVA 150/120 kV power transformer

机译：60 MVA 150/120 kV电力变压器的总产分析成本

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摘要

Power transformer (PT) is one of the most important parts in electrical power system. In some cases, many electric utilities do not consider to capitalize the power losses, resulting in uneconomical decision during the purchasing. In this study, to evaluate the best purchase choice of a 60 MVA 150/129 kV PT, we examine the total cost of ownership (TCO) as the basis for determining the total economic value of PT. When purchasing and designing the PT, the optimum parameters are not only solely determined by the design and the lowest cost, but also influenced by material cost, power losses and its typical operation. Hence, design optimization and calculation of TCO of PT is of importance to provide a reliable and economical product. Here it is realized by reviewing the existing design and fabrication as well as the cost structure, design optimization and total cost ownership calculation. The result shows that the PT design optimization employing losses capitalization exhibits the most economical value, reducing TCO up to 3%. We found that the losses capitalization and TCO of PT are sensitively affected by interest rate, economic life of PT, electricity cost, load factor and losses. Those factors are key components to determine the suitable specification, design evaluation and operation of the transformer. This practical study is beneficial both for the owner and manufacturer of PT, thus giving the right specification and design to support purchasing process of PT.
机译：电力变压器（PT）是电力系统中最重要的部分之一。在某些情况下，许多电力公用事业公司不考虑利用功率损失，从而在采购期间不经济决定。在本研究中，为了评估60 MVA 150/129 kV PT的最佳购买选择，我们将所有权总成本（TCO）视为确定PT总经济价值的基础。在购买和设计PT时，最佳参数不仅完全由设计和最低成本确定，而且通过材料成本，功率损耗及其典型操作的影响。因此，PT的DCO设计优化和计算是重视提供可靠和经济的产品。在这里，通过审查现有的设计和制造以及成本结构，设计优化和总成本所有权计算来实现。结果表明，采用损失资本化的PT设计优化表现出最经济的价值，将TCO减少到3 ％。我们发现，PT的损失资本化和TCO受到利率，经济寿命的PT，电力成本，负荷因子和损失影响的敏感性。这些因素是确定更合适的规格，设计评估和操作的关键组件。这项实际研​​究对于PT的所有者和制造商来说都有益，从而提供正确的规格和设计，以支持PT的采购过程。

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