基于矩量法的空心电抗器工频磁场仿真分析

Analysis of Power Frequency Magnetic Field Simulation of Air Core Reactor Based on the Method of Moments

为了研究变电站站内干式空心电抗器周围工频磁场的分布情况,笔者基于矩量法,首先推导了工频磁场矩量法的计算原理,然后以35 kV干式空心电抗器为例对单相电抗器、三相电抗器组进行模型建立与工频磁场分布的计算与分析。将计算结果与实测结果进行对比,两者结果吻合良好,说明了文中方法及模型的准确性与有效性。最后分析空心电抗器组在不同运行方式时对其周围工频磁场分布的影响情况,为研究变电站站内电抗器周围工频磁场的分布提供参考。

In order to study the distribution of power frequency magnetic field around the substation of dry-type air core reactor,this paper based on the method of moment, firstly the principle of power frequency magnetic field calculation method of moments is derived, then take the 35 kV dry air core reactor as an example, the model and the power frequency magnetic field distribution of the single-phase and three-phase reactor group is established, calculated and analyzed. Comparing the calculated results and the measured results, the results are in good consistency, the accuracy of this method and the model is effective. Finally, the effects of the air core reactor group operating in different ways on the surrounding power frequency magnetic field distribution are analyzed,a reference for the study of power frequency maznetic field distribution around the substation reactor is provided.