| 并网光伏发电系统励磁涌流抑制方法研究 |
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| 作者姓名： | 苏小玲 韩民晓 刘海军 |
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| 作者单位： | 华北电力大学 电气与电子工程学院，北京 102206;华北电力大学 电气与电子工程学院，北京 102206;华北电力大学 电气与电子工程学院，北京 102206 |
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| 摘 要： | 在探讨太阳能并网变压器励磁涌流产生的原因及其影响因素的基础上, 分析现有励磁涌流抑制方法的优缺点, 提出了一种抑制变压器励磁涌流的新方法. 该方法采用V-f-t控制, 考虑了励磁非线性和剩磁的影响, 通过设置不同的V-f-t曲线抑制励磁涌流并进行比较. 仿真实验表明, 选择合适的函数曲线可以有效地抑制光伏并网变压器空载合闸时的励磁涌流.
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| 关 键 词： | 光伏并网 励磁涌流 逆变器控制 |
Magnetizing Surge Current Mitigation of Grid-Connected Photovoltaic Generation System |
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| Authors: | SU Xiao-ling HAN Min-xiao and LIU Hai-jun |
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| Affiliation: | College of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;College of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;College of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China |
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| Abstract: | Based on the mechanism of the magnetic surge current of grid-connected photovoltaic transformer, this paper studied the advantages and disadvantages of the existing magnetic surge current mitigation method, and put forward a new method to restrain the transformer surge current. The new method adopts the V-f-t controlling with the influence of nonlinear magnetic excitement and remanence considered. Different V-f-t curves are chosen and the surge current mitigation results are compared. Simulation test results show that the magnetic surge current can be efficiently restrained by choosing proper function curves when the grid-connected photovoltaic transformer is switched on. |
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