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Study on Electromagnetic Interference of Electronic Transformer Under Operation of 330kV GIS Disconnector

机译：330kV GIS隔离开关运行时电子变压器的电磁干扰研究

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摘要

With the continuous increase of the voltage grade in the substation, the switch operating overvoltage, especially the very fast transient overvoltage (VFTO), and the electromagnetic interference of the transformer in the substation caused by VFTO has attracted more and more attention. Based on a new generation of intelligent 330kV substation demonstration project, which has the highest voltage level in China, this paper analyses the physical process of the generation and propagation of VFTO in the high voltage substation by combining the simulation calculation with the test detection. Taking the high frequency transient model of the acquisition unit based on Roche coil as an example, the signal waveforms of the Roche coil port under VFTO are obtained. By comparing the simulation data and the signal waveforms of the measured merging unit, the high frequency electromagnetic interference characteristics of substation equipment under VFTO are reflected.
机译：随着变电站中电压等级的不断提高，开关操作过电压，特别是非常快速的瞬态过电压（VFTO），以及由VFTO引起的变电站中变压器的电磁干扰已引起越来越多的关注。本文以我国电压等级最高的新一代智能330kV变电站示范工程为基础，结合仿真计算和试验检测，分析了高压变电站中VFTO的产生和传播的物理过程。以基于罗氏线圈的采集单元的高频暂态模型为例，得到了VFTO下罗氏线圈端口的信号波形。通过比较仿真数据和被测合并单元的信号波形，反映了变电站设备在VFTO下的高频电磁干扰特性。

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