赵莉华,徐舒蓉,谢荣斌,薛静,张霖,王仲.变压器可听声诊断技术中传声器的选择[J].电测与仪表,2018,55(1):102-108. ZHAO Lihua,XuShurong,XIE Rongbin,XUE Jin,ZHANG Lin,Wang Zhong.The Selection of Microphone in Power Transformer Diagnosis Technology Based on the Audible Sound[J].Electrical Measurement & Instrumentation,2018,55(1):102-108.
变压器可听声诊断技术中传声器的选择
The Selection of Microphone in Power Transformer Diagnosis Technology Based on the Audible Sound
Transformer fault detection technology research has always been a hot topic in the field of transformer research. The transformer diagnostic technology based on audible sound is a newer transformer fault diagnosis method, which audible data acquisition process is a very critical step. So the performance of the audible acoustic signal acquisition device directly affects the determination of the diagnosis result. This paper analyzes and compares the structure and performance parameters of commonly used moving coil microphones, capacitive microphones and electret condenser microphones. According to the characteristics of the audible signal of the transformer and the detection requirement, it is recommended to use the electret condenser microphone in the audible diagnosis of the transformer. Finally, an electret condenser CRY333 microphone is used to collect the data in a certain area. The results show that the performance of the microphone is suitable for transformer audible acquisition.
