一种新型便携式多功能局部放电在线检测仪器的设计

Design of a New Kind of Portable Multifunction Partial Discharge Online Detecting Instrument

针对传统小型局部放电检测设备功能单一、数据收集整理困难、大型局放检测装置操作复杂、不利于推广的缺点,在分析比对主流的局放信号检测方式后,设计开发了一种新型局部放电在线检测仪器,能够同时实现地电波(Transient Earth Voltage, TEV)、超声和高频电流三种检测方法。检测装置以ZYNQ7020嵌入式系统为核心,外围硬件电路部分实现信号采样、外设操作、通信和信息存储等功能,软件部分完成信号降噪、数据处理、交互界面设计和故障诊断等工作。该局放检测仪能够满足不同配电设备的在线监测需求,为用户提供全面、具体、多样化的数据参考。

The traditional small-sized partial discharge detection instrument has the disadvantages of single function and data collection,and the large one is difficult for practice and hard-promoted.After the comparison of mainstream partial discharge detection methods,this paper designed a novel partial discharge online detection instrument,which could accomplish transient earth voltage(TEV),ultrasonic and high-frequency current detection.The instrument was cored with embedded system ZYNQ7020.The hardware circuit part realized functions such as signal sampling,peripheral operation,communication and information storage,and the software part completes signal denoising,data processing,interactive interface design and fault diagnosis etc.The partial discharge detector can meet online monitoring requirements of different distribution equipments,which provides comprehensive,specific and diverse data references for users.