| 引用本文: | 王义凯,尹项根,乔健,谭力铭,卢庆辉,吴大立.串接小容量变压器预充磁技术参数设计[J].电力自动化设备,2022,42(9): |
| WANG Yikai,YIN Xianggen,QIAO Jian,TAN Liming,LU Qinghui,WU Dali.Parameter design of series small-capacity transformer pre-magnetizing technology[J].Electric Power Automation Equipment,2022,42(9): |
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| 串接小容量变压器预充磁技术参数设计 |
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王义凯1,2, 尹项根1,2, 乔健1,2, 谭力铭1,2, 卢庆辉1,2, 吴大立3
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1.华中科技大学 强电磁工程与新技术国家重点实验室，湖北 武汉 430074;2.华中科技大学 电力安全与高效湖北省重点实验室，湖北 武汉 430074;3.武汉第二船舶设计研究所，湖北 武汉 430064
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| 摘要: |
| 串接小容量变压器预充磁涌流抑制技术在船舶电力系统中应用广泛，但缺乏规范化的参数设计方法。推导了串接小容量变压器预充磁技术各次合闸最大励磁涌流峰值解析计算公式。基于此，以预充磁变压器合闸励磁涌流峰值小于系统额定电流，工作变压器合闸励磁涌流峰值小于差动保护启动值为原则确定可选预充磁变压器容量范围；从海洋核动力平台安全性、经济性角度出发规范预充磁电路结构；基于实际建立磁通与预期磁通相位一致原则规范预充磁变压器绕组接线方式；提出相邻周期涌流能量比方法计算变压器建立稳态磁通所需时间，规范预充磁最短合闸时间间隔。MATLAB/Simulink仿真结果表明，在不同合闸角、剩磁情况下，所设计的参数能够保证预充磁合闸过程中变压器差动保护可靠不误动。 |
| 关键词: 串接小容量变压器预充磁 海洋核动力平台 容量范围 合闸时间间隔 |
| DOI：10.16081/j.epae.202204053 |
| 分类号:TM402 |
| 基金项目:国家自然科学基金资助项目(51877089)；国家重点研发计划项目(2017YFC0307800) |
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| Parameter design of series small-capacity transformer pre-magnetizing technology |
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WANG Yikai1,2, YIN Xianggen1,2, QIAO Jian1,2, TAN Liming1,2, LU Qinghui1,2, WU Dali3
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1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;2.Hubei Electric Power Security and High Efficiency Key Laboratory, Huazhong University of Science and Technology, Wuhan 430074, China;3.Wuhan Second Ship Design and Research Institute, Wuhan 430064, China
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| Abstract: |
| Inrush current suppression technology based on the series small-capacity transformer pre-magnetizing technology is widely used in the shipboard power system, but it lacks a standardized parameter design method. The analytical formula of the maximum magnetizing inrush current peak value in each breaker-closing stage is given. On this basis, the optional capacity range of the Pre-T(Pre-magnetizing Transformer) is determined on the principle that the peak magnetizing inrush current of closing Pre-T is less than the rated current of the system, and the peak magnetizing inrush current of closing the working transformer is less than the starting value of the differential protection. The structure of the pre-magnetizing circuit is standardized from the aspects of security and economy of floating nuclear power plant. Based on the phase consistency principle of the established actual magnetic flux and the expected magnetic flux, the wiring mode of the Pre-T is disciplined. An adjacent inrush current energy ratio method is proposed to calculate the required time for the transformer to establish steady magnetic flux, and to regulate the minimum closing time interval of pre-magnetizing. MATLAB/Simulink simulative results show that under different closing angles and remanence, the design parameters can ensure that the transformer differential protection does not misoperate in the process of pre-magnetizing breaker-closing. |
| Key words: series small-capacity transformer pre-magnetizing floating nuclear power plant capacity range closing time interval |
