大容量升压分裂电力变压器的应用要点分析  

Analysis of Application Points of Large Capacity Step-up SplitWindings Power Transformer

作　　者：吕国芳 刘旸 胡广毅 王振科 LV Guo-fang;LIU Yang;HU Guang-yi(CMEC;Harbin Power System Engineering&Research Institute Co.,Ltd.)

机构地区：[1]中国机械设备工程股份有限公司,北京100073 [2]哈尔滨电站设备成套设计研究所有限公司

出　　处：《电站系统工程》2025年第2期81-82,共2页Power System Engineering

摘　　要：分裂型主变压器结构是一个连接电网的高压绕组和连接发电机组的两个低压绕组,两个低压侧绕组分别通过封闭母线与两个发电机组连接,两个发电机组均设置有发电机出口断路器。采用分裂电力变压器的两机一变出线的接线方案能够有效地限制发电机出线回路的短路电流,降低相关设备的选型参数。经过应用前方案要点分析,项目两台发电机组合用一台大容量升压分裂电力变压器的主接线方案的设备选型费用,相较于常规接线方案的设备费用将减少至少25%。且相较于单元机组布置可大大减小设备占地面积,降低配设备设施造价,节约工程建设的时间及成本。The main structure of the split winding transformer is a high-voltage winding connected to the power grid and two low-voltage windings connected to the generators.And both generators are equipped with generator circuit breakers.The split windings power transformer can effectively limit the short-circuit current of generator circuit and reduce the selection parameters of related equipment.Through the analysis of the key points of the pre-application scheme,the equipment selection cost of a large-capacity step-up split power transformer will be reduced by at least 25% compared with the equipment cost of the double-winding transformer.And it can greatly reduce the area occupied by the equipment,reduce the cost of equipment and facilities,and save the time and cost of engineering construction.

关 键 词：分裂型 变压器 限制 短路电流 

分 类 号：TM6[电气工程—电力系统及自动化]