110 kV同塔六回输电线路不平衡性分析  

Analysis on Unbalance of 110 kV Six-circuit Transmission Lines on the Same Tower

作　　者：颜天佑 黄业同 杨长辉[2] 

机构地区：[1]广州电力设计院,广东广州510660 [2]上海电力学院,上海200090

出　　处：《广东电力》2012年第2期67-71,共5页Guangdong Electric Power

摘　　要：针对同塔六回输电线路难以实现完全换位而产生三相不平衡问题,影响输电线路甚至整个电力系统的安全运行。利用MATLAB软件计算了110 kV同塔六回输电线路的序参数和不平衡系数,在线路自身属性确定的条件下,分析了不同相序布置对多回输电线路不平衡度的影响。经过综合比较分析发现,采用逆序配置方式时,同塔六回输电线路的各种不平衡系数总体相对较低,特别是直通型电磁不平衡系数很低,建议优先使用。This paper elaborates on three-phase unbalance caused by incomplete transposition of six-circuit transmission lines on the same tower and its influence on safe operation of lines or even the entire power system. By using MATLAB, order parameter and unbalance factor of 110 kV six-circuit transmission lines on the same tower are calculated. On the basis of de- termined line property, influence of different layouts of phase sequence on unbalance of multi-circuit transmission lines is an- alyzed. Through comprehensive comparison and analysis, it is concluded that all unbalance factors of six-circuit transmission lines on the same tower are comparatively small in reversed sequence mode and throughtype electromagnetic unbalance factor in particular, hence it is preferentially recommended.

关 键 词：同塔六回输电线路 序参数 不平衡度 MATLAB软件 相序布置 

分 类 号：TM751[电气工程—电力系统及自动化]