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

Service Lifetime Loss Evaluation Method for Transformers Exclusively Serving Solar Power Plants

“…Lastly from (5), the annualized TLF can be described by the ratio of the average service load loss to the maximum load losses. The latter can be expressed as follows in (10).…”

“…The jurisdiction procedure by utility owners for purchasing a transformer should therefore not only be based on the initial purchase cost but also the operating and maintenance costs. The total ownership cost (TOC) method [5] take into consideration the purchase cost, operational cost and maintenance costs over the transformer designed service lifetime. It has become possible for utility owners to compute the most technical and economic choice between competing transformer designs over its designed service lifetime through the TOC method.…”