Fans arrangement analysis in oil forced air natural cooling method of power transformer radiator

Abstract

The cooling of radiators in power transformers employing natural oil-air forced method is the purpose of this study. Two modes used for cooling fans, namely vertical and horizontal placement, will be compared as well. Four sets of radiators have been studied in this research, and in each set, 14 fins and three fans with a diameter of half a meter have been used. The fans will be arranged such that three of them will be placed under the radiator (in vertical position) in the first case, while in the second case, they will be located in one side of the radiator (in horizontal position). The results derived from the comparisons indicate the superiority of the horizontal mode in heat transfer against the vertical mode. Furthermore, it is notable that if the internal fan is disconnected, the cooling can be enhanced with the help of some existing points in the vertical mode. The improvement in heat transfer rate can be observed through locating the vertical fans optimally, once compared to the horizontal placement. The lower reliability of the vertical mode can be detected once the side fans are disconnected, while in any cases, the heat transfer superiority is achievable for horizontal mode. That is because, the disconnection of one of the fans, leads to the negligence of the radiators major parts in the vertical mode.

Health Assessment Method of Equipment in Distribution Court Based on Big Data Analysis in the Framework of Distribution Network of Things

“…With the continuous improvement of social living standards and the rapid development of social productivity, the demand for and the dependence on electricity are increasing and the requirements for power supply reliability are also increasing (Ai & Zhao, 2021). Due to the demand of intelligent power grid construction, the number and types of power grid equipment are increasing, and its shape and structure are becoming more and more complex; this increases the pressure for safe operation and maintenance, especially in the distribution network system that directly connects with customers in which many key technologies of intelligent operation, maintenance, and evaluation are facing serious challenges (Jg et al, 2022;Taghikhani & Afshar, 2021). Therefore, it is of great significance to evaluate the health status of the distribution network and equipment, not only to improve the efficiency of distribution network operation and maintenance, but also to build smart grids (Sun & Li, 2022).…”