高压电器2025，Vol.61Issue(10)：39-44,54,7.DOI:10.13296/j.1001-1609.hva.2025.10.005
局部放电检测用柔性超声传感器灵敏度标定方法研究
Research on Sensitivity Calibration Method for Flexible Ultrasonic Sensors in Partial Discharge Detection
摘要
Abstract
This paper focuses on the calibration method for the sensitivity of flexible ultrasonic sensors for partial dis-charge detection of power cables.The traditional calibration platform,due to the mismatch between the acoustic im-pedance and the cables,causes the sensitivity of the calibrated flexible sensor not to accurately reflect its actual situa-tion in the partial discharge detection of cables.In this paper,by constructing a new type of sensitivity calibration platform based on polyethylene plates,the calibration deviation problem of traditional steel plate platforms is solved thanks to the high similarity of the acoustic impedance characteristics of polyethylene plates to those of cable materi-als.The sensitivity calibration results of the flexible film sensor on the steel plate calibration platform and the polyeth-ylene plate calibration platform are analyzed,finding that the peak sensitivity of the flexible sensor calibrated on the steel plate platform is only 53 dB,while the sensitivity calibrated on the polyethylene plate platform is increased up to 66 dB.The verification experiment of sensor sensitivity performed on the cables shows that the sensitivity calibrat-ed on the polyethylene plate platform can accurately reflect the detection ability of the flexible sensor for the weak ul-trasonic signal propagating on the cables.The new calibration platform set up in this paper can provide a basis and reference for the calibration of the sensitivity of flexible ultrasonic sensors.关键词
灵敏度标定平台/局部放电/超声波检测/柔性传感器/电力电缆Key words
sensitivity calibration platform/partial discharge/ultrasonic detection/flexible sensors/power cable引用本文复制引用
崔延凯,赵一明,张云飞,任宗强,钟力生,吴明,高景晖..局部放电检测用柔性超声传感器灵敏度标定方法研究[J].高压电器,2025,61(10):39-44,54,7.基金项目
国家自然科学基金青年科学基金项目(52407026).Project Supported by Young Scientists Fund of the National Natural Science Foundation of China(52407026). （52407026）
