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交直流混杂环境下变压器漏电感参数分析方法

更新时间:2020-10-30 04:36:57 大小:2M 上传用户:zhengdai查看TA发布的资源 标签:变压器漏电 下载积分:2分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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受直流扰动影响时,电力变压器的电感和电流变化不同于传统情况。基于变压器直流扰动模型研究动态漏电感参数的变化特性,并以变压器基本回路方程作为基础,建立考虑直流扰动的T形等效电路,得到动态电感参数矩阵,推导出漏电感辨识方法。将电磁耦合方法用于直流扰动下变压器的电磁特性的模拟分析,对直流扰动下变压器电流、电感以及磁通的变化规律进行归纳总结,从而结合T形等效电路分析变压器两侧动态漏感参数的变化特性,以反映不同的直流扰动水平。最后,通过动模试验验证了仿真分析结果进。

The variation of inductance and current are obviously different from the traditional condition when the power transformer is impacted by DC disturbance. The characteristics of dynamic leakage inductance were studied in AC-DC hybrid transformer. The T-shape equivalent circuit was established based on the basic circuit principle. Identification matrix of the dynamic inductance is obtained, and the identification method of inductance was deduced. Then the electromagnetic characteristics of DC-injected transformer were simulated and analyzed through the time-domain field-circuit coupled method, and the varying rule of the key parameters was summarized. Furthermore, the variation characteristics of dynamic leakage inductance on both sides of transformer were analyzed to reflect the different DC disturbance level combined with T equivalent circuit. Finally, the simulation results were verified by the dynamic model test.

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交直流混杂环境下变压器漏电感参数分析方法.pdf 2M

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