摘要
为研究高压直流输电系统(HVDC)换流变压器中非导磁构件杂散损耗的分布,文中基于TEAMProblem 21基准族中的P21a-0的简化模型进行了详细的实验研究与仿真分析,详细考察了不同激励下变压器中非导磁结构件杂散损耗的分布。针对不同频率的单一正弦激励和谐波激励,分别进行了详细的实验研究和数据分析。提出采用瞬态场法求解谐波磁场作用下非导磁钢板杂散损耗的实用措施,不同谐波磁场作用下非导磁钢板杂散损耗计算值与实验值具有较好的一致性。研究结果表明,在激励电流有效值相等的条件下,谐波电流含量越高非导磁钢板中涡流损耗越大;但是,谐波电流相位的变化不会对非导磁钢板中杂散损耗产生影响,这与导磁钢板的谐波磁损耗特性有明显差异。所得结果、结论有助于通过优化设计提高变压器的性能。
To study the stray loss of non-magnetic part of the converter transformer in high voltage direct current （HVDC） transmission system, the effects of different excitation patterns on the stray loss were investigated in detail based on the simplified model of P21a-0. The stray losses of the non-magnetic steel part were obtained experimentally by changing the content and phase of the harmonic. Some practical engineering-oriented approaches were proposed to solve the eddy-current problem under harmonic magnetic field excitation. The calculated and measured stray loss values in different testing conditions are well in agreement. Conclusions are drawn that the phase of the harmonic current has no effect on the stray loss of the non-magnetic steel, which are different from ferromagnetic material. When the effective values of excitation current are equivalent, the stray loss of the non-magnetic steel increases with the increase of the harmonic content.
作者
赵志刚
史文军
刘慧敏
赵捷
ZHAO Zhigang;SHI Wenjun;LIU Huimin;ZHAO Jie(Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability,I-Iebei University of Technology,Tianjin 300130,China)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第9期111-116,共6页
High Voltage Apparatus
基金
国家自然科学基金资助项目(51107026)~~
关键词
杂散损耗
谐波磁场
非导磁钢
stray loss
harmonic magnetic field
non-magnetic steel
