CAJ | 학술논문

为了抑制GIS局部放电现场检测中的噪声干扰，本文在现有的小波阈值去噪的基础之上，提出了一种基于新的阈值函数的去噪算法。该去噪算法与传统的基于硬阈值或软阈值小波去噪算法相比，具有表达式简单，易于计算的优点，同时通过仿真试验表明该算法提高了信号的信噪比，具有较好的去噪性能。
위료억제GIS국부방전현장검측중적조성간우，본문재현유적소파역치거조적기출지상，제출료일충기우신적역치함수적거조산법。해거조산법여전통적기우경역치혹연역치소파거조산법상비，구유표체식간단，역우계산적우점，동시통과방진시험표명해산법제고료신호적신조비，구유교호적거조성능。
In order to decrease the noise signal contained in the partial discharge (PD)detection for gas insulated switchgear (GIS),we presented the method of wavelet threshold denoising , a new threshold function is posed to eliminate the noise signal. Simulation experimental results indicate that the new threshold function , compared with the traditional soft threshold and hard threshold, is simple to express and easy to calculate, also, it is more important that the new threshold function can achieve better denoising effect.