本文提出新型大型船舶变压器励磁涌流抑制方案。通过检测大型变压器空载合闸时的负荷电流和电网侧电流，并比较两者的差值，把偏差输入到变压器预充磁装置的控制模块，使控制信号跟踪给定的励磁电流信号，实时调整NPMOT补偿的电流，从而抑制励磁涌流对船舶电力系统的冲击。测试结果表明，新方案能有效抑制励磁涌流，具有实用价值。
This paper presents a scheme of new inrush current suppression for the transformer in large-scale ship power system. When the large transformer is switching on under no-load condition, by detecting and comparing the difference between the load current and the grid side current, the deviation is input to the control module of Novel Preliminary Magnetizing of Transformer (NPMOT). The signal tracks a practical excitation-current profile and then adjusts the NPMOT compensation quantity, thereby suppressing the impact of the magnetizing inrush current of the electric power system of the ship. The test results show that the new transformer inrush current suppression scheme can effectively suppress the inrush current.
2019,41(6): 100-105 收稿日期：2018-06-15
DOI：10.3404/j.issn.1672-7649.2019.06.021
分类号：U665
作者简介：黄彬(1983-),男,博士研究生,研究方向为电力系统及其自动化
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