摘要
现有变压器模型无法精确计算变压器谐波损耗,因此提出了考虑集肤效应与邻近效应的变压器谐波损耗模型。对变压器中绕组的电磁场进行了分析,利用坡印亭矢量法得出各层绕组的损耗计算公式,由此分析了集肤效应与邻近效应对绕组的影响,建立了变压器谐波损耗模型。仿真结果表明,和Simulink自带模型相比,利用所提模型计算谐波损耗时精度更高。
Since the harmonic loss of transformer cannot be accurately calculated according to the existing transformer models,a transformer harmonic loss model considering skin effect and proximity effect is proposed. The electromagnetic field of transformer winding is analyzed and the loss calculation formula is deduced with Poynting vector method for each winding,according to which ,the influences of skin effect and proximity effect on winding are analyzed and a transformer harmonic loss model is built. Simulative results show that,compared to the Simulink model,the proposed model has higher aecuracy.
出处
《电力自动化设备》
EI
CSCD
北大核心
2015年第3期133-139,共7页
Electric Power Automation Equipment
基金
国家电网公司科技项目(SG11113)~~
关键词
变压器
谐波分析
损耗
模型
仿真
试验
集肤效应
邻近效应
electric transformers
harmonic analysis
losses
models
computer simulation
testing
skin effect
proximity effect
