中压电力系统电力变压器连接组别差异化共用的技术可行性研究

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[摘 要]天津某35 kV变电站在设备安装过程中，发现两台主变除联接组别不同外，其它参数均符合订货要求，联接组别分别为D，yn11和YN，d11。考虑到变压器重新制造需增加成本、延长工期，对上述差异化在中压系统共用可行性问题的探讨和研究就显得十分必要。

[关键词]中压电力系统；电力变压器；联接组别；差异化；共网运行

[中图分类号]TM41 [文献标志码]A [文章编号]1001–523X（2022）07–0078–03

Technical Feasibility Study on Differential Sharing of Connection Groups of Power Transformers in Medium Voltage Power Systems

Zhang Liang

[Abstract]During the equipment installation process of a 35 kV substation in Tianjin， it was found that the parameters of the two main transformers were all in line with the ordering requirements except for the connection groups. The connection groups were D，yn11 and YN，d11. Considering that the remanufacturing of the transformer needs to increase the cost and prolong the construction period， it is very necessary to discuss and study the feasibility of the above-mentioned differentiation in the sharing of the medium voltage system.

[Keywords]medium voltage power system； power transformer； connection group； differentiation； common network operation

1 概述

联接组别是表征变压器一、二次绕组首末端以及绕组之间电气连接方式的重要参数，反映了变压器一、二次绕组间的相位以及电量变换关系等。（剩余4161字）