开关柜局部放电声电波检测技术的运用

随着供电可靠性要求的不断提高,周期性停电进行设备性能检测的时间间隔加长,开关柜内空间狭小,对柜内各元件绝缘性能要求较高,在线检测其绝缘性能尤为必要。笔者采用开关柜局部放电声电波检测技术,并通过不同放电声强变化规律的研究,给开关柜内的局部放电活动提供判断依据,从而实现不停电对开关柜绝缘性能的在线诊断,有效提高设备安全稳定运行水平。

Application of Acoustic Emission Technique to Detection of Partial Discharge in Switchgear

For higher reliability of power supply,the interval of periodic outage for detecting equipment performance gets longer.Due to confined interior space in a switchgear,higher insulation capability of its internal components is required,therefore online insulation detection of the components is necessary.In this paper,the acoustic emission technique is employed to detect partial discharge in switchgear,and provide criteria for judgment of partial discharge in switchgear by analyzing various acoustic emission intensities.Consequently,online detection of the insulation performance of switchgear without outage is realized to effectively enhance safety and reliability of the switchgear equipment.