| 引用本文: | 王巧媛,贾少锋,梁得亮,毕建刚,徐征宇,王秀丽,王锡凡.柔性输电用低频变压器电磁分析与多目标优化设计[J].电力自动化设备,2025,45(4):216-224 |
| WANG Qiaoyuan,JIA Shaofeng,LIANG Deliang,BI Jiangang,XU Zhengyu,WANG Xiuli,WANG Xifan.Electromagnetic analysis and multi-objective optimization design of low-frequency transformer for flexible power transmission[J].Electric Power Automation Equipment,2025,45(4):216-224 |
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| 摘要: |
| 针对柔性交流输电用变压器低频化改造时面临的质量和损耗大幅增长的问题，对低频变压器电磁结构进行了分析和优化设计。分析频率改变对铁心材料和变压器电磁性能的影响。进一步地，利用有限元软件建立低频变压器的参数化模型，将变压器的运行损耗和有效材料质量作为优化目标，基于敏感度分析对优化参数进行分类，分别采用基于遗传算法的多目标优化分析、响应面法、参数扫描法等多种优化方法对不同敏感度的参数进行优化，并结合温度场仿真对优化结果的热点温度进行约束。选取最优样本与未优化的低频变压器模型的各项参数进行对比，从而验证优化设计方案的有效性。 |
| 关键词: 柔性低频输电 低频变压器 漏磁场 有限元仿真 优化设计 |
| DOI：10.16081/j.epae.202412034 |
| 分类号:TM402 |
| 基金项目:国家重点研发计划项目(2021YFB2401100)；国家电网公司科技项目(柔性低频输电关键技术) |
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| Electromagnetic analysis and multi-objective optimization design of low-frequency transformer for flexible power transmission |
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WANG Qiaoyuan1, JIA Shaofeng1, LIANG Deliang1, BI Jiangang2, XU Zhengyu2, WANG Xiuli1, WANG Xifan1
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1.State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China;2.China Electric Power Research Institute, Beijing 100192, China
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| Abstract: |
| Aiming at the problem of significant increase in weight and loss faced when the transformers for flexible AC power transmission are remodeled at low frequency, the electromagnetic structure of low-frequency transformer is analyzed and optimally designed. The effect of frequency change on the electromagnetic properties of electrical steel and transformer is analyzed. A parameterized model of the low-frequency transformer is then established by using finite element software, with operating losses and effective material weight as the optimization objectives. The optimization parameters are classified through sensitivity analysis, and various methods such as multi-objective optimization using genetic algorithms, response surface me-thodology, and parameter scanning are applied to optimize parameters with different sensitivities. The hot spot temperature of the optimized results is constrained using temperature field simulation. The optimal samples are selected to compare with the parameters of the unoptimized low-frequency transformer model, so as to verify the effectiveness of the optimized design scheme. |
| Key words: flexible low-frequency transmission low-frequency transformer leakage flux field finite element simulation optimization design |
