Experimental results show, the selected center frequency should be in the frequency range that the UHF component of PD signals is rich and the noise is not very strong, the bandwidth of the filters should be as wide as possible unless the noise goes high.

• 实验结果表明,检测频率应选择局部放电特高频分量丰富且噪声小的频带,滤波器的带宽应在不引入干扰的前提下尽量选用较宽的带宽。