| 摘要 |
The present invention relates to high-voltage and low-voltage distribution boards, a cabinet panel, and a motor control panel having a detection system for arc and corona discharges based on ultrasonic waves, the detection system which detects the arc and corona discharges in a housing including the high-voltage and low-voltage distribution boards, the cabinet panel, and the motor control panel inside thereof. The high-voltage and low-voltage distribution boards, the cabinet panel, and the motor control panel having the detection system for arc and corona discharges based on ultrasonic waves includes: a sensor unit including multiple ultrasonic sensors which are installed to be in contact with or closer to equipment provided in the housing and detects an ultrasonic wave generated by an arc or corona discharge; and a monitoring device including an abnormality determination unit which detects the arc or the corona discharge generated from the equipment based on the ultrasonic wave detected by the sensor unit and controls an internal state of the housing according to information on the detected arc or the corona discharge. The abnormality determination unit includes a noise elimination unit to eliminate noise from the ultrasonic wave through a finite impulse response (FIR) filter; and a discharge detection unit to detect the arc or the corona discharge based on the noise eliminated ultrasonic wave. According to the system described above, it is possible to perform more accurate and reliable detection by using the ultrasonic sensors and detecting the discharge after eliminating the noise included in the ultrasonic wave. |
