Nelson Carlo Escarcha ME-1 Review on Studies about Distribution Transformer Efficiency March 31, 2022 Abstract Low voltage, dry type distribution transformers are commonly used in commercial and industrial applications to step down local utility distribution voltages and give power to facility panelboards or specified equipment. Approximately two-thirds of the energy consumed in the generation, transmission, and distribution of electricity reaches the point of use [1]. As a result, providing one unit of power to an end user necessitates the generation, transmission, and distribution of nearly two units of power. Saving one unit of electricity at the end user, on the other hand, avoids the loss of two units of power due to generation, transmission, and distribution, resulting in a three-fold reduction in energy consumption. As a result, an increase in transformer efficiency at the point of consumption will result in a three-fold increase in energy savings (Harden, 2011). As a result, various researches have been conducted in the past to improve the energy efficiency of distribution transformers. This review focuses on three pieces of related literature for the optimization of the energy efficiency of distribution transformers, Reduction of Power Grid Losses by Using Energy Efficient Distribution Transformers [1] by Themistoklis D. Kefalas and Antonios G. Kladas; Energy efficient distribution transformers [2] by Mariusz Najgebauer & Jan Szcyglowki; Energy efficiency of distribution transformers in Europe [3] by Roman Targosz and Frangiskos V. Topalis. Keywords: Distribution Transformer Efficiency Introduction Electric transformer power loss is one of the biggest contributors to overall transmission and distribution loss in a normal power distribution grid. As a result, energy-efficient transformers are a key way of minimizing transmission and distribution losses. Objective The purpose of this work is to study, analyze, and comprehend the published articles and studies in a methodical manner. • In this document [] indicates article number and () indicated ideas included in the that article Nelson Carlo Escarcha ME-1 Comparison and Contents of the Papers “Reduction of Power Grid Losses by Using Energy Efficient Distribution Transformers” [1] is the study of Themistoklis D. Kefalas and Antonios G. Kladas. It was published under “Trans Tech Publications” in Switzerland, a study in the year 2012. The authors of this study have two objectives: the first is to demonstrate the importance of distribution transformer no-load loss during periods of high electric energy costs, and the second is to present a novel numerical methodology for wound core transformer no-load loss analysis, allowing for the selection of the most economically and technically advantageous transformer for each application. They address the subject of evaluating wound core transformer no-load losses and developing novel approaches to reduce their manufacturing and operating costs in this study [1]. Wound core distribution transformers' production and operation expenses have been reduced as a result of the development of the proposed solutions. As a result, there were significant economic and environmental benefits, as well as an increase in transformer efficiency. “Energy efficient distribution transformers” [2] is an article by Mariusz Najgebauer & Jan Szcyglowki. It was published under ResearchGate, an article in the year 2011. The authors of this research discussed how novel soft magnetic materials, primarily amorphous alloys, can be used as transformer cores to improve the performance of electric distribution transformers. The characteristics of amorphous and traditional electrical steel sheets were compared. The economic and environmental benefits of using amorphous distribution transformers in electric power systems were explored. Energy efficiency of distribution transformers in Europe [3] is a conference paper by Roman Targosz and Frangiskos V. Topalis. It was published under ResearchGate, a paper in the year 2007. This paper presents findings of analysis of existing situation of a project named SEEDT, it is one of the projects developed under Intelligent Energy – Europe programme which converts EU energy policy for today’s energy challenges like energy efficiency. One the main goals is to update and scrutinize knowledge about energy efficiency in distribution transformers in Europe. The overall objective of SEEDT project is to promote the use of energy efficient distribution transformers, which can be profitable for investors, and by contribution to European Community energy saving potential, may help to fulfill EU energy policy targets. Strategies will include proposals for labeling, mandatory standards or voluntary agreements and development of different dissemination mechanisms. • In this document [] indicates article number and () indicated ideas included in the that article Nelson Carlo Escarcha ME-1 Both studies [1] and [2] analyze and assess the types of transformers that could potentially improve distribution transformer efficiency. Both studies [2][3] show and emphasize the economic and environmental advantages of their respective transformer types. The features of amorphous and typical electrical steel sheets were also compared in the study [2] titled "Energy efficient distribution transformers." The study [3], titled "Energy efficiency of distribution transformers in Europe," examines the current state of a project that focuses on energy efficiency of distribution transformers in Europe. Conclusion All of the above-mentioned literature on distribution transformer efficiency emphasizes the necessity for action to address the power loss experienced by distribution transformers. However, the two studies [1][2] discuss their preferred type of distribution transformer as a potential remedy to distribution transformer power loss. While Roman Targosz and Frangiskos V. Topalis' research [3] looks at the current condition of a project that focuses on distribution transformer energy efficiency. References 1. Hardern, K. D. (2011). Optimizing Energy Efficiency Standards For Low Voltage Distribution Transformers. https://www.pfw.edu/dotAsset/bea78c04-bbef-424f-9397- 45bac5641842.pdf 2. Reduction of Power Grid Losses by Using Energy Efficient Distribution Transformers [1] by Themistoklis D. Kefalas and Antonios G. Kladas 3. Energy efficient distribution transformers [2] by Mariusz Najgebauer & Jan Szcyglowki 4. Energy efficiency of distribution transformers in Europe [3] by Roman Targosz and Frangiskos V. Topalis. • In this document [] indicates article number and () indicated ideas included in the that article