局部放电特高频信号的传播特性研究

Study on Propagation Characteristics of UHF Partial Discharge Signals

电力变压器是电力系统的关键设备,其稳定运行对整个电网的安全不言而喻。然而,随着近年来电力系统转向特高压、大容量的发展方向,给电力变压器带来了越来越高的工作场强,其绝缘劣化现象越来越普遍,严重影响了电网的健康安全运行。为此,研究讨论了目前检测电力变压器局部放电的新技术——特高频(UHF)局部放电检测技术,希望通过此技术及时发现有局部放电缺陷的变压器,从而避免由于局部放电导致的变压器故障,促进电网的良好健康运行。

The power transformer is the key equipment in the power system, the safe and stable operation of the power grid is self-evident. However, with the development of power system in recent years to the development direction of ultra high voltage, large capacity, has brought more and more to the field of power transformer, the insulation deterioration phenomenon more and more common and serious, serious impact on health and safety operation of the power grid. Therefore, the research discusses the current partial discharge detection of power transformer-new technology of ultra high frequency （UHF） PD detection technique, hope that through this technology to find transformer partial discharge defects, so as to avoid the partial discharge of transformer fault cause, promote electricity the healthy operation of the network.