基于声发射技术的绝缘子在线监测方法的研究

通过对绝缘子现行的污秽监测方法的研究分析,提出了基于声发射技术的绝缘子污秽放电在线监测方法,对电晕放电和污秽放电声发射信号进行了实验研究,并对两者放电声发射在波形相位与强度上的差别进行了分析比较,基本消除了电晕放电对污秽放电声发射信号的干扰,从而揭示了污秽放电的严重程度和声信号之间的关系,证明了声发射技术在绝缘子在线检测上的可行性。

Study on On-Line Inspection Method of Insulator Based on Acoustic Emission Technique

Study on current monitoring method for insulator contaminant is examined. The on-line detection method for monitoring insulator contaminant flashover is proposed based on the acoustic emission technique. The acoustic emission signals produced by corona discharge and contaminant flashover are experimented and studied. The distinguishing difference of the phase and amplitude between corona discharge and contaminant flashover is compared and analyzed, and disturbance caused by corona discharge is effectively eliminated. The relationship between the extent of contaminant flashover and acoustic signal is revealed, the feasibility of on-line inspection of insulator discharge based on the acoustic emission technique is put forward.