计及变比影响的变压器损耗模型研究  

Transformation Ratio Impact-considered Transformer Power Loss Model

作　　者：范宇航 赵丹阳 李英楠 陈思旭 FAN Yuhang;ZHAO Danyang;LI Yingnan;CHEN Sixu(State Grid Tianjin Electric Power Company Jizhou Power Supply Branch,Tianjin 301900,China)

机构地区：[1]国网天津市电力公司蓟州供电分公司,天津301900

出　　处：《电工技术》2024年第18期189-191,共3页Electric Engineering

摘　　要：目前在变压器的研究中,对于变压器有功损耗的计算大都未考虑变压器变比的影响。为此,建立计及变比影响的变压器损耗模型,研究了变压器变比对其损耗参数的影响。从变压器自身损耗特性出发,根据变压器的电磁关系和工作原理,通过分析励磁损耗中主磁通与变压器一次侧绕组匝数、外加电源电压的关系,以及绕组损耗中绕组电阻与变比之间的联系,结合设备提供的技术参数,推导出计及变比影响的变压器损耗模型。算例分析结果表明,与传统计算模型相比,采用所提出的优化模型可有效指导变压器分接头合理配置,降低变压器有功功率损耗,指导变压器经济运行。Most of the published works on transformer power loss did not consider the influence of transformation ratio.In view of this the present work made an attempt to preliminarily analyze the impact of transformation ratio to transformer loss parameters and to incorporate this impact in modeling.According to the transformer′s electromagnetic characteristics,working principle,and loss characteristics,the relationship between main flux and transformer winding,and that between main flux and the given power supply voltage,as well as the connection between winding resistance and transformation ratio,were analyzed.Then the transformer power loss model was deduced by combining the aforementioned relationships and equipment technological parameters.The proposed model was indicated by case analysis to facilitate power loss reduction and economic operation of transformers,compared with currently prevailing models,by reasonable allocation of transformer taps.

关 键 词：变压器 损耗模型 变压器变比 变压器参数 降损 

分 类 号：TM41[电气工程—电器]