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高压电器  2015 

基于矩形超高频天线阵列的局放源方向定位的研究

, PP. 46-50

Keywords: 矩形天线阵列,变电站,局部放电,超高频,方向定位

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Abstract:

高压设备随着绝缘水平下降会发生局部放电现象(PD),放电信号由波长不等的电磁波构成,可能会传播到设备外面的空气中。文中采用由4个盘锥天线构成的矩形天线阵列来接收空气中辐射的超高频局部放电信号,因矩形天线阵列可在测量时移动,可通过移动实现局放的检测定位。文中重点研究了利用信号首峰确定各路信号其实时刻和基于各个天线接收信号的时间到达的不同(TDOA)的方向定位算法。通过实验验证了基于矩形天线阵列的方向定位算法的正确有效性。

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