现代电力2016，Vol.33Issue(6)：56-63,8.
基于光纤超声传感器的油纸绝缘局部放电超声波信号特性试验研究
Test on Ultrasonic Characteristics of Partial Discharge in Oil-paper Insulation for Transformers Based on Fiber-optic Ultrasonic Sensor
摘要
Abstract
It is of great value to detect Partial Discharge (PD)in transformer insulation sensitively on-line,to discov-er insulation defect in time,and to ensure the safety of the whole power system.In this paper,the ultrasonic attenua-tion,propagation velocity and waveform changes of PD is tested in oil-paper insulation through oil,insulation paper, steel,paper-steel composite medium and copper wire by using fiber-optic ultrasonic sensor.The results show that sig-nal intensity of ultrasonic wave in oil,insulation paper,steel and composite medium can be attenuated,while the wave shape doesn’t change.It also can be seen from results that the influence of copper wire is the most serious,which can not only decrease the intensity and speed of ultrasonic wave, but also distort the ultrasonic wave.In the end,the actual measurement is carried out in the solid transformer,which obtains better detection effect.关键词
变压器/超声波/油纸绝缘/光纤超声传感器Key words
transformer/ultrasonic wave/oil-paper insula-tion/fiber-optic ultrasonic sensor分类
信息技术与安全科学引用本文复制引用
张春燕,张映月,滕俊,盛吉,商超,王伟..基于光纤超声传感器的油纸绝缘局部放电超声波信号特性试验研究[J].现代电力,2016,33(6):56-63,8.基金项目
国家自然科学基金项目(51577063) （51577063）
