デンリョク キキ セツビ ノ タメ ノ ジュシン アンテナ ノ コガタカ

Partial discharge (PD) is a symptom of insulation degradation of electric power apparatus and facilities. We have developed remote sensing system to receive the electromagnetic (EM) waves emitted from PD. In this project, we investigated the EM waves at the antenna of remote sensing system using the finite difference time domain (FDTD) method and the resonant frequency components of EM waves in a shielded metal room using a spectrum analyzer. These results are useful for downsizing the antennas

デンリョク キキ セツビ シンダン ノ タメ ノ コガタ デンジハ センシング システム ノ カイハツ

Partial discharge (PD) is a symptom of insulation degradation of electric power apparatus and facilities. This paper shows a new small receiver for detecting the electromagnetic waves emitted from PD. The receiver has an analog to digital converter (ADC) with 8 bits and a field programmable gate array (FPGA). It is confirmed that the receiver synchronously can obtain two signals generated by using a generator. The comparison of dynamic range of the receiver and spectrum analyzer (SA), which has been widely used, and the investigation of effect of pulse repetition frequency (PRF) are carried out