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首页> 外文期刊>Power Delivery, IEEE Transactions on >Experimental Research and Simulation on VFTO Mitigation by Ferrite Rings in UHV GIS
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Experimental Research and Simulation on VFTO Mitigation by Ferrite Rings in UHV GIS

机译：超高压GIS中铁氧体环抑制VFTO的实验研究与仿真。

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摘要

Experiments were performed on two different ultra-high voltage gas-insulated switchgear test circuits to evaluate the mitigation performance of ferrite R2KB rings with very fast transient overvoltages (VFTOs). Significant decreases in the overshoot factor and the VFTO level were observed, although the steepness was not much improved owing to saturation. It was found that ferrite rings are more effective for VFTO mitigation at the source side than at the load side. Simulations were carried out with a new circuit model of the ferrite ring, and the simulation results were consistent with the experimental results. The method of drawing the contour plot of VFTO and very fast transient current in the time-space domain was proposed to facilitate the analysis. With this method, the principle of determining the optimal installation location of ferrite rings for the best mitigation performance was clarified.
机译：在两个不同的超高压气体绝缘开关设备测试电路上进行了实验，以评估具有非常快速的瞬态过电压（VFTO）的铁氧体R2KB环的缓解性能。观察到过冲因数和VFTO水平显着降低，尽管由于饱和度，陡度并没有太大改善。已经发现，铁氧体环在源侧比在负载侧对缓解VFTO更有效。用新的铁氧体磁环电路模型进行了仿真，仿真结果与实验结果吻合。提出了在时空域中绘制VFTO轮廓图和非常快的瞬态电流的方法，以方便分析。通过这种方法，阐明了确定具有最佳缓解性能的铁氧体环的最佳安装位置的原理。

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