A test of parallel operating three-phase transformers with different transformation factrs

详细信息    查看全文

• 作者：A. V. Romodin ; M. I. Kuznetsov
• 关键词：three ; phase transformer ; transformation factor ; electric load ; power distribution ; phase voltage shift
• 刊名：Russian Electrical Engineering
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：87
• 期：11
• 页码：601-606
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Manufacturing, Machines, Tools;
• 出版者：Allerton Press
• ISSN：1934-8010
• 卷排序：87

文摘

This article presents the results of testing two parallel operating three-phase power transformers with different transformation factors. The practical operation of power engineering systems often makes it necessary to split up the substation transformer capacity, which usually requires installing two parallel transformers instead of one, though with the same total power. The problem arises from this replacement of how to ensure uniform load distribution between the transformers. In the case of similarly designed transformers of equal power uniform load distribution is ensured automatically due to symmetrical parallel circuits. However, if differently designed transformers with different transformation factors are enabled in parallel, the uniformity of load distribution between them will be violated. It has been proven by testing that, with increasing total load, parallel operating transformers with very different transformation factors decrease the consumption of current by windings of the transformer with a higher transformation factor.