赵书涛,李沐峰,王亚潇,孙会伟.断路器操动状态声音辨识的优化算法的研究[J].电测与仪表,2017,54(10):. ZHAO Shutao,LI Mufeng,WANG Yaxiao,SUN Huiwei.Research of optimization algorithm for sound signal of circuit breaker operating state recognition[J].Electrical Measurement & Instrumentation,2017,54(10):.
断路器操动状态声音辨识的优化算法的研究
Research of optimization algorithm for sound signal of circuit breaker operating state recognition
To solve the ambient interference in high voltage circuit breaker online diagnostics which is based on acoustic signal analysis, a blind source separation method is proposed for sound disturbance signal recognition. A improved potential function is used to estimate sources, and then ensemble empirical mode decomposition (EEMD) is applied into calculating several intrinsic mode functions (IMF), multidimensional signals are reconstructed in line with the number of sources. The sound signal blind source separation is completed by Fast Independent Component Analysis (FastICA) which is optimized by a quasi-Newton Method. The sound signal component of breaker closing state identification is obtained according envelope features comparison. The results show that, the proposed method can make the useful acoustic signal generated by the circuit breakers’ action extracted effectively from mixed voice signal while the information of sources is unknown.
