110kV变电站主变压器并列运行环流分析

On the Paralleling Operation Circulation of the Main Transformer in 110kV Transformer Substation

变压器并列运行是扩大供电容量、提升供电可靠性以及降低损耗的重要途径之一,变电站主变压器并列运行方式主要采用主-从跟踪法,需要先确定好主变压器分解位置,再调整其他变压器分解位置。本研究分析了某地变电站两台主变压器运行情况,分析了两者之间的循环电流,结果显示,并列环运行环流产生的问题是由于变压器运行问题的影响,在环流因素的影响下,变压器无法科学对负荷进行分配,增加了系统的发热量,这就给变电运行带来了安全隐患。

The paralleling operation of the transformer is one of the important ways to expand the capacity of power supply, improve the reliability of power supply and reduce the loss. The main manner of the paralleling operation of transformer in transformer substation is master-slave tracking. It needs to determine the breakdown location of the main transformer and then adjust the breakdown location of other transformers. This study analyzes the operation situation of two main transformers in a transformer substation and analyzes their circulating current. The results show that the problems of paralleling operation circulation are caused by the influence of the transformer operation problems. By the influence of the circulation factor, the transformer cannot scientifically distribute load, which increases the calorific value of the system and brings hidden danger to the transformer substation.