变压器差动保护负相序对差动保护的影响  

Effect of Negative Phase Sequence of Transformer Differential Protection on Differential Protection

作　　者：李兆阳 李翔 张全起 吴建琳 Li Zhaoyang;Li Xiang;Zhang Quanqi;Wu Jianlin(State Grid Shandong Electric Power Company Qingdao Huangdao District Power SupplyCompany,Qingdao Shandong,266000;State Grid Shandong Electric Power Company Zouping Power SupplyCompany,Binzhou Shandong,256200)

机构地区：[1]国网山东省电力公司青岛市黄岛区供电公司,山东青岛266000 [2]国网山东省电力公司邹平市供电公司,山东滨州256200

出　　处：《电子测试》2019年第12期103-104,121,共3页Electronic Test

摘　　要：在电力系统发展的过程中,变压器差动保护负相序下,电流相位关系也会发生一定的变化,差动保护效果会产生一定的负面变化,因此本文针对变压器差动保护负相序对差动保护的影响进行分析。首先根据实际案例具体分析变压器差动保护负相序时的接线组别向量的影响,然后从多个方面针对差动保护影响分析。In the process of power system development, Under the negative phase sequence of transformer differential protection, The phase relation of current will also change. The effect of differential protection will produce some negative changes. Therefore, this paper analyses the influence of negative phase sequence of transformer differential protection on differential protection. Firstly, according to the actual case, the influence of connection group vectors on the negative phase sequence of transformer differential protection is analyzed concretely. Then the influence of differential protection is analyzed from many aspects.

关 键 词：变压器 差动保护负相序 接线组别 相位差 

分 类 号：TM40[电气工程—电器] TM774